Nokia Solutions and Networks T5GX1 UBS CDMA XMI Transceiver at 800 MHz User Manual Exhibit 122c

Nokia Solutions and Networks UBS CDMA XMI Transceiver at 800 MHz Exhibit 122c

Exhibit 122c

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XMI (Transceiver Module Internal) Module
Chapter 7: XMI Replacement Procedures
Figure 7-3 Two People Properly Carrying an XMI (removable XMI handle attached)
ti-cdma-05891.eps
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1X UBS Macro BTS FRU
XMI (Transceiver Module Internal) Module
XMI Installation Procedure
Follow the steps in Procedure 7-2 to install the XMI.
Procedure 7-2
XMI Installation Procedure
AT THE BTS SITE
The XMI module is heavy. Two people are required to lift, carry, or handle the
XMI module.
•
Be sure the removable XMI handle is attached to the front of the XMI before
physically handling the module.
•
Be sure two people use both hands and wear protective footwear when
handling the XMI.
•
Be sure to use two people to support the module while sliding the module
out of or into the shelf slot.
An XMI module that is not in a shelf should always be set on its side and never on
its edge. This will prevent the XMI module from tipping over and causing damage
or injury.
The replacement XMI module should already have the removal handle attached.
If handle is not attached, go to step 2.
If handle is attached, go to step 3.
Attach the removable XMI handle to the front of the replacement XMI module (see Figure 1-9
800 MHz XMI Module Front Panel I/O Detail on page 1-38 or Figure 1-10 1.9 GHz XMI
Module Front Panel I/O Detail on page 1-39 for location of XMI handle mounting screw
holes) as follows:
•
Align handle screw holes with handle mounting screw holes on the XMI front panel.
(Note handle orientation; handle is not symmetrical.)
•
Insert two M5 screws.
•
Using a T25 TORX driver, tighten the screws to 3.2-3.6 N-m (28-32 in-lb).
Continued
68P09283A64-3
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XMI (Transceiver Module Internal) Module
Procedure 7-2
Chapter 7: XMI Replacement Procedures
XMI Installation Procedure (Continued)
This step requires two people. Perform the following:
•
(See Figure 7-3 Two People Properly Carrying an XMI (removable XMI handle attached)
on page 7-18.) One person grasp the XMI by the handle with both hands. The second
person grasp the XMI fan tray sides with both hands. Using safe lifting technique (i.e.
lift with your legs not your back), Use legs to lift (Do not use your back) pick up the XMI
and carry it over to the front of the frame.
•
(See Figure 7-2 Two People Properly Removing/Installing an XMI (removable XMI
handle attached) on page 7-17.) While one person holds the XMI by the handle with
both hands, the second person supports the bottom of the module with one hand and the
top of the module with the other hand. Lift the XMI into the appropriate slot rails and
gently slide it all of the way into the shelf slot.
Insert the four XMI mounting screws; two screws at each of the top and bottom mounting tabs
on the front of the module. Using a T25 TORX driver, tighten the screws to 4.77 N-m (42 in-lb).
If desired, remove the handle from the front of the replacement XMI module as follows:
•
Using a T25 TORX driver, remove the two screws that secure the handle to the XMI
front panel.
•
Retain the two screws with the XMI handle for future use.
For 800 MHz XMI only, install the TXD attenuator, previously removed from the failed XMI,
into the TXD connector on the front panel of the replacement XMI.
Reconnect all cables to the XMI front panel.
Restore power to the XMI by setting the corresponding XMI PDU DC circuit breaker to
ON (pushed in).
This completes the physical installation of the FRU. If optimization is to be performed at this
time, see Optimization Recommended following this table.
AT THE OMCR
10
Open a CLI window. Refer to Accessing OMCR CLI window on page 3-3.
11
Display the overall status of all devices at the BTS, including
the XMI, by entering the following command at the prompt:
omc-000000>DISPLAY BTS- STATUS
12
Determine the status of XMI 1 by observing the BTS STATUS report.
13
Unlock the replacement XMI by entering the following command at the prompt:
omc-000000>UNLOCK XMI-- UNC
14
Display the status of the XMI by entering the following command at the prompt:
omc-000000>DISPLAY BTS- STATUS
Verify that the replacement XMI is in an INS_ACTIVE state.
15
From the OMCR, monitor the Alarm Manager. Verify that old alarms are cleared and no
new alarms are reported.
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1X UBS Macro BTS FRU
XMI (Transceiver Module Internal) Module
Optimization Recommended
Perform the following BTS Optimization/ATP procedures:
•
BTS Device Database Audit
•
BTS Device Database Update
•
TX Path Calibration Audit
•
Spectral Purity TX Mask ATP (optional)
•
Waveform Quality (Rho) ATP (optional)
•
Code Domain Power ATP (optional)
•
RSSI Test (FER Test is optional)
Refer to the 1X UBS Macro BTS Optimization/ATP manual for the optimization procedures.
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XMI Fan Tray Assembly
Chapter 7: XMI Replacement Procedures
XMI Fan Tray Assembly
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XMI Fan Tray Assembly Description
The XMI fan tray assembly consists of ﬁve 27 V DC fans mounted in a housing. This housing is
the removable rear panel of the XMI. (See Figure 7-4 and Figure 7-5.)
The fan tray assembly mounted on the rear of the XMI draws cooling air in from air vents on the
XMI front panel through the XMI and exhausts air out the XMI rear panel.
The XMI fan housing contains ﬁve fan mounting locations. Each fan mounting location has the
following:
•
built-in fan grille/ﬁnger-guard
•
four vibration isolator fan mounting posts
•
fan connector bracket
Each individual fan has a electrical wiring and connector. The connector mounts in the
corresponding fan connector bracket.
The XMI fan tray assembly is attached to the rear of the XMI and secured with four screws.
When the XMI fan tray assembly is attached to the rear of the XMI, the ﬁve fan connectors mate
with connectors on the XMI Fan Interconnect Board (FIB).
The XMI FIB provides a DC voltage connection to each fan in the fan tray assembly and is a
conduit for fan speed information and control.
The XMI PA Controller (XPAC) provides central control of the three LPA sections. In addition,
the XPAC gathers LPA alarms and provides XMI fan speed control.
System Impact/Considerations
Typically the XMI fan tray assembly replacement requires that the affected XMI be physically
removed from the UBS Macro BTS frame. However, if the rear of the frame is accessible, the XMI
fan tray assembly can be replaced without physically removing the affected XMI from the frame.
Performing this replacement procedure on a frame with only one XMI will cause BTS
downtime and suspend call processing.
If the frame is equipped with only one XMI, BTS service will be interrupted during the XMI fan
tray assembly replacement. If the frame is equipped with more than one XMI, only the affected
XMI will be out-of-service and the BTS will remain in service.
Alarms will be reported during the replacement procedure.
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1X UBS Macro BTS FRU
XMI Fan Tray Assembly
Table 7-4 FRU Replacement Conditions
FRU
XMI fan tray assembly
What to Shut Down...
From the OMCR, lock the XMI being removed. Then shut
down XMI DC input power.
XMI Fan Tray Diagrams
Figure 7-4 shows how the fan tray assembly is attached to the rear of the XMI.
Figure 7-5 shows the fan tray assembly with ﬁve fans, built-in fan grille/ﬁnger-guards and ﬁve
fan connector brackets with individual fan connectors and wiring.
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XMI Fan Tray Assembly
Chapter 7: XMI Replacement Procedures
Figure 7-4 XMI Fan Tray Assembly (Removal & Installation)
XMI (Rear View)
XMI Fan Tray
Assembly
Mounting Screws
(T20 Head)
Mounting Screws
T20 Head)
ti-cdma-05918.eps
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1X UBS Macro BTS FRU
XMI Fan Tray Assembly
Figure 7-5 XMI Fan Tray Assembly (External & Internal Views)
Fan Connector
Bracket (5)
Fan Grille/Finger-Guard
Internal View
XMI Fan
Housing
Fan
Fan Connector
Bracket (5)
Fan Connector
Fan Wiring
XMI Fan
Housing
ti-cdma-05919.eps
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XMI Fan Tray Assembly
Chapter 7: XMI Replacement Procedures
Required Items
Manpower
•
Two people are required to lift, carry, or handle the XMI module.
Documents
•
None
•
T20 TORX Bit
•
T25 TORX Bit
•
Torque Driver
•
XMI removable handle with two M5 screws
•
Heat protective gloves for handling/touching a “HOT" XMI
Tools
Replacement Unit
•
XMI fan tray assembly with ﬁve 27 V DC fans (Motorola model STLN6404)
Prerequisites
Do not touch the XMI with unprotected hands when the “HOT" label is fully visible. If
the “HOT" label is fully visible, wear heat protective gloves when touching the metal
case of the XMI. The “HOT" label becomes fully visible when the temperature of the
metal case of the XMI reaches 50 degrees C. However, the label may be partially
visible at lower case temperatures.
XMI fans must be completely stopped before removing the XMI fan tray assembly.
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1X UBS Macro BTS FRU
XMI Fan Tray Assembly
The XMI should be locked by the OMCR operator just prior to removing the XMI or the
XMI fan tray assembly.
Coordinate this repair task with the OMCR operator.
Before You Begin
Before you begin, record the pertinent information in the following table (see Table 7-5):
Table 7-5
Item Number Replacement List
Item
Number
BTS number
XMI number
XMI Fan Tray Assembly Replacement
Follow the steps in Procedure 7-3 to replace an XMI fan tray assembly.
Procedure 7-3 XMI Fan Tray Assembly Replacement Procedure
AT THE BTS SITE
Notify the OMC-R operator that you are replacing the XMI fan tray assembly.
Do not touch the XMI with unprotected hands when the “HOT" label is fully visible.
If the “HOT" label is fully visible, wear heat protective gloves when touching the
metal case of the XMI. The “HOT" label becomes fully visible when the temperature
of the metal case of the XMI reaches 50 degrees C. However, the label may be
partially visible at lower case temperatures.
If the affected XMI is going to be removed from the frame in order to replace the
XMI fan tray assembly, go to Procedure 7-1 XMI Removal Procedure on page 7-14
and perform the steps starting at step 2. Then return to step 3 of this procedure.
If the affected XMI is going to be accessed from the rear of the frame in order to replace
Continued
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XMI Fan Tray Assembly
Chapter 7: XMI Replacement Procedures
Procedure 7-3 XMI Fan Tray Assembly Replacement Procedure (Continued)
the XMI fan tray assembly, go to Procedure 7-1 XMI Removal Procedure on page 7-14 and
perform the steps starting at step 2, but stop after step step 8. Then return to step step 3 of
this procedure.
XMI fans must be completely stopped before removing the XMI fan tray assembly.
Working at the rear of the affected XMI, make sure that all ﬁve of the XMI fans have
completely stopped.
Using a T20 TORX driver, remove the four XMI fan tray assembly mounting screws (see
Figure 7-4 for screw locations.)
Grasp the XMI fan tray assembly and ﬁrmly pull it away from the rear of the XMI.
Properly position the replacement XMI fan tray assembly at the rear of the XMI. Make sure
that all ﬁve fan connectors are properly aligned with the mating connectors on the XMI.
Firmly push the XMI fan tray assembly onto the rear of the XMI. Make sure that all ﬁve fan
connectors are fully seated.
Insert the four XMI fan tray assembly mounting screws. Using a T20 TORX driver, tighten
the screws to 1.6 - 1.8 N-m (14 - 16 in-lb).
If the affected XMI is removed from the frame, go toProcedure 7-2 XMI
Installation Procedure on page 7-19 and perform the steps starting at step 3.
If the affected XMI is being accessed from the rear of the frame, go toProcedure 7-2 XMI
Installation Procedure on page 7-19 and perform the steps starting at step 8.
There is no optimization required for XMI fan tray assembly replacement.
7-28
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Chapter
DMI Replacement Procedures
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68P09283A64-3
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8-1
FOA
DMI Replacement Procedures
Chapter 8: DMI Replacement Procedures
DMI Replacement Procedures
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Introduction
This chapter includes FRU replacement procedures for the following:
•
DMI (Digital Module Internal) Assembly – This section covers the following:
Preparing the replacement DMI assembly in the Field.
Replacing the DMI.
Dismantling the failed DMI assembly in the Field.
and more
•
Modem Boards – This section covers the replacement of a failed 1X CDMA or EV-DO
modem board in a UBS Macro BTS DMI.
8-2
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1X UBS Macro BTS FRU
DMI (Digital Module Internal) Assembly
DMI (Digital Module Internal) Assembly
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The R20 UBS Macro BTS only supports frame conﬁgurations with up to two DMIs
and up to two XMIs.
DMI Description
The UBS Macro BTS frame must be equipped with at least one instance of the DMI. A second
DMI is optional. The DMIs are located in the right side of the XMI shelf in the UBS Macro BTS
frame (see Figure 1-1 UBS Macro BTS low-tier/low-capacity frame (1000 mm rack) on page
1-27, Figure 1-2 Low capacity UBS Macro BTS starter frame (1800 mm rack) on page 1-28 and
Figure 1-3 UBS Macro BTS mid-capacity frame (1800 mm rack) on page 1-30). The DMIs are
stacked vertically in an XMI shelf slot. DMI 1 is on the top and DMI 2 is on bottom. If the
optional second DMI is not equipped, an empty DMI outer housing is in the DMI 2 position.
The DMI includes a DMI assembly that slides into a DMI outer housing. The DMI assembly
consists of a chassis with a controller board, two rear mounted cooling fans and a front panel.
The DMI assembly may also be equipped with up to two modem boards. When the UBS Macro
BTS frame equipment is shipped from the factory the DMI assembly is equipped with at least one
modem board. A second modem board is optional and may be either factory or ﬁeld installed.
The DMI can be equipped with either 1X CDMA modem boards, EV-DO modem boards, or a
combination of one 1X CDMA modem board and one EV-DO modem board.
Each modem board mounts on opposite sides of the controller board. Modem board-to-controller
board electrical connection is via a printed circuit board mounted High Density Mezzanine
(HDMEZZ) type connector. Each modem board is secured to the DMI assembly chassis with
seven screws that are captivated to the modem board.
Figure 8-1 Removing and installing Modem 1 on page 8-13 and Figure 8-2 Removing and
installing Modem 2 on page 8-14 show the locations of Modem 1 and Modem 2 within the
DMI assembly.
The following rules apply to modem board location within the DMI:
•
For a DMI equipped with one 1X CDMA modem board, the 1X CDMA modem
board is always Modem 1 location
•
For a DMI equipped with one EV-DO modem board, the EV-DO modem board
is always Modem 2 location
•
For a DMI equipped with a combination of one 1X CDMA modem board and one
EV-DO modem board, the 1X CDMA modem board is always Modem 1 location
and the EV-DO modem board is always Modem 2 location
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DMI (Digital Module Internal) Assembly
Chapter 8: DMI Replacement Procedures
The DMI assembly is the FRU (i.e., spare) that is used for DMI replacement. This assembly
includes a chassis with a controller board, fans, front panel and two modem boards. This
assembly does not include an outer housing. The DMI outer housing in the UBS Macro BTS
frame is reused.
The DMI FRU that is used for DMI replacement can be either of the following:
•
Factory built DMI assembly – consisting of a DMI chassis, controller board, fans, front
panel and two modem boards (i.e., 1X CDMA, EV-DO, or a combination of both).
•
Field prepared DMI assembly – consisting of a DMI chassis, controller board, fans, front
panel and up to two modem boards (i.e., 1X CDMA, EV-DO, or a combination of both)
that are added to the assembly in the ﬁeld.
This chapter provides a procedure describing how to ﬁeld prepare a DMI assembly, by
installing up to two modems, so that it matches the conﬁguration of the failed DMI.
The DMI assemblies do not include an outer housing. The DMI outer housing in the UBS Macro
BTS frame is reused.
The typical DMI replacement scenario is as follows:
1.
Remove the failed DMI assembly from its outer housing in the UBS Macro BTS frame.
2.
Remove the replacement DMI assembly from its packaging and install it into the outer
housing in the UBS Macro BTS frame.
3.
Place the failed DMI assembly into the packaging that the replacement DMI came in.
The DMI assembly FRU is used as a replacement for a DMI with an internal DMI
component failure (including controller board, modem board, fan, or front panel
failure). Although, a DMI with a modem board failure can just have the failed modem
board replaced. This is covered in the Modem Board section of this chapter.
This chapter also provides a procedure describing how to dismantle a failed DMI
assembly in the ﬁeld. This procedure is used if it is desired to reclaim known good
FRUs from the failed DMI assembly. After dismantling the DMI assembly, the failed
portion may be returned to Motorola for repair and the reclaimed known good FRUs
may be restocked.
8-4
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1X UBS Macro BTS FRU
DMI (Digital Module Internal) Assembly
System impact/considerations
If the UBS Macro BTS frame is equipped with one DMI, then performing this
replacement procedure will cause BTS downtime and suspend all call processing .
If the UBS Macro BTS frame is equipped with two DMIs, then performing this
replacement procedure for the Site Master DMI will temporarily cause BTS downtime.
This is due to soft reset of the non-Site Master DMI during the DMI swap procedure.
As soon as the DMI swap procedure is ﬁnished, the non-Site Master DMI becomes
the Site Master DMI and call processing resources are available, but temporarily
reduced until the failed DMI is replaced.
Performing this replacement procedure for a non-Site Master DMI will not cause
BTS downtime, but call processing resources will be temporarily reduced until the
failed DMI is replaced.
Call trafﬁc processing through the site will be temporarily interrupted by the DMI replacement
procedure.
Alarms will be generated during the DMI replacement procedure.
The DMI is not hot swappable.
DMI removal requires shutting down DC power to the DMI as well as disconnection of all
DMI cables.
Table 8-1 DMI Replacement Conditions
FRU
Digital Module
Internal
Ref Designator
DMI
What to Shutdown...
From the OMCR, lock the DMI being removed.
Then shut down the DMI DC input power.
Required items
Documents
•
1X UBS Macro BTS Optimization/ATP manual.
68P09283A64-3
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SEP 2007
DMI (Digital Module Internal) Assembly
Chapter 8: DMI Replacement Procedures
Tools
•
T20 TORX bit.
•
Torque driver.
•
ESD wrist straps.
•
ESD ﬂoor and bench top mats.
•
ESD containers.
Replacement Units
All models of DMI assemblies include: DMI chassis with controller board, fans and
front panel.
Factory built DMI assemblies:
•
DMI assembly with one 1X CDMA modem board (Motorola model STLN6681).
•
DMI assembly with one EV-DO modem board (Motorola model STLN6682).
•
DMI assembly with two 1X CDMA modem boards (Motorola model STLN6683).
•
DMI assembly with one 1X CDMA modem board and one EV-DO modem board (Motorola
model STLN6684).
•
DMI assembly with two EV-DO modem boards (Motorola model STLN6679).
— OR —
Field prepared DMI assembly consisting of:
•
DMI assembly without modem boards (Motorola model STLN6325). Up to two modem
boards are added to the assembly in the ﬁeld. Add the appropriate quantities of the
following:
CDMA 1X Modem Board (Motorola model SGLN6336).
— AND/OR —
EV-DO Modem Board (Motorola model SGLN6494).
8-6
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1X UBS Macro BTS FRU
DMI (Digital Module Internal) Assembly
DMI I/O Panel Connectors/Ports & LEDs
DMI I/O Panel
Figure 1-11 DMI Module Front Panel Detail on page 1-41 shows I/O connectors on the front
panel of the UBS Macro BTS DMI. The top-to-bottom positioning of the DMI shown in the ﬁgure
is the same as when it is installed in the rack. This ﬁgure shows connector/port locations,
connector types and brief cabling details.
DMI Connectors/Ports
The following text describes each connector/port on the DMI front panel.
•
+27VDC - DMI DC input power connections. Connects to corresponding DMI DC power
connector on the PDU of the UBS Macro BTS frame. The PDU DMI DC power connector
supplies protected +27 V via a 20 A circuit breaker.
•
IDI/SSI 1 and SSI 2 - Serial backhaul trafﬁc and control data connectors provide serial
data links between the DMI and the corresponding SSIs. The SSI 2 port is currently not
used.
The R20 UBS Macro BTS does not support frame conﬁgurations with an IDI
(Interworking DMI Interconnect) application.
•
XMI 1/BSI and XMI 2 - High-speed Serial data Link (HSL) port connectors that each
provide a 1.2288 Gbps high-speed serial data links between the DMI and the respective
XMI. The high-speed serial data links support the transfer of baseband I & Q data as well
as control data between the DMI and XMI. These connectors are cabled to the appropriate
HSL 1 or HSL 2 high-speed serial data link connector on the XMI front I/O panel.
The R20 UBS Macro BTS does not support frame conﬁgurations with a BSI
(Baseband Switch Interface) application.
The MMI and LMT ports are intended to be used primarily for testing or debugging
purposes by Motorola. These ports may be used in the eld for maintenance purposes
by customers. Carefully follow written procedures when using these ports in the eld.
Failure to do so could result in an inoperable FRU.
68P09283A64-3
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DMI (Digital Module Internal) Assembly
Chapter 8: DMI Replacement Procedures
•
RS232-1 and RS232-2 - Debug RS-232 ports allow MMI access to the DMI controller
board via a computer terminal through either a modem or a null modem cable. These MMI
ports are 8-pin RJ-45 connectors.
•
LMT and TEST - These ports are intended for development use only. These debug ports
are conﬁgured for full-duplex fast Ethernet 10/100BaseT and allows local MMI access
to the DMI controller board via a Local Maintenance Terminal (LMT) with an Ethernet
interface. The LMT and TEST ports are 8-pin RJ-45 connectors.
DMI LEDs
Table 8-2 shows the possible states for the DMI front panel LEDs and the corresponding
indications. These LED indicators are located on the DMI front panel next to the DMI +27 V
DC connector (see Figure 1-11 DMI Module Front Panel Detail on page 1-41) and are labeled
as follows:
Table 8-2
•
ALM (ALARM)
•
INST (INSTANCE)
•
ST (STATUS)
DMI LEDs States and Indications
ALM (Red) LED State
INST LED State
STA (Green) LED
State
Indication
Off
Off
Off
No DC Power to FRU
On
Orange
On
LED Indicator Test (temporary; 0.5 sec
to 1 sec)
On
N/A
Off
FRU Failure
Off
N/A
N/A
No FRU Failure
Flashing
(1.5 sec-On/1
sec-Off)
N/A
N/A
Partial (soft) FRU Failure
N/A
N/A
Flashing
(250 ms-On/250
ms-Off)
FRU Booting up (not active)
N/A
N/A
On
FRU Active
N/A
Green Flashing
(0.5 sec-On/0.5
sec-Off cycle count)
followed by 3
sec-Off
N/A
Instance Indicator and No FRU
Cabling Connection Errors Detected.
Cycle count equals FRU type instance;
where: 1 ﬂash = 1st instance, 2 ﬂashes
= 2nd instance, 3 ﬂashes = 3rd instance,
so on and so forth.
N/A
Red
N/A
FRU Cabling Connection Error Detected
N/A = LED state is Not Applicable to indication
8-8
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
DMI (Digital Module Internal) Assembly
Prerequisites
ESD handling precautions must be adhered to when handling and working on the DMI
assembly or the modem boards. Wear a conductive, high impedance wrist strap
during handling. All work performed on the DMI assembly and modem boards must
be done in an ESD protected work area.
The procedures in this chapter requires working on or around circuitry that is extremely
sensitive to ESD.
Coordinate the DMI replacement task with the OMCR operator.
Before You Begin
Before you begin, record the pertinent information in the following table (see Table 8-3):
Table 8-3
Item Number Replacement List
Item
Number
BTS number
DMI number
If the failed DMI is to be replaced with a “ﬁeld prepared DMI assembly”, it will be necessary
to have a work area that meets the criteria described in DMI Preparation Area on page 8-10.
Then it will be necessary to prepare the complete DMI assembly by performing Procedure 8-1
Preparing the replacement DMI assembly in the Field on page 8-11 prior to performing the
Procedure 8-2 Replacing the DMI on page 8-15.
68P09283A64-3
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FOA
SEP 2007
DMI (Digital Module Internal) Assembly
Chapter 8: DMI Replacement Procedures
DMI Preparation Area
The DMI preparation area should provide the following ESD protection and the proper
environmental conditions.
•
ESD Protection:
Always wear a ground strap which must be connected to the electrostatic point on
the equipment.
Leave any conductive foam pieces on connectors or leads until the last moment.
Remove these pieces just before installing the device.
Do not wear outer clothing made of nylon or similar man made material. A cotton
overall is preferable.
If possible work on an grounded metal surface or anti-static mat. Wipe insulated
plastic work surfaces with an anti-static cloth before starting the operation.
All metal tools should be used and when not in use they should be placed on an
grounded surface.
Take care when removing components connected to electrostatic sensitive devices.
These components may be providing protection to the device.
When mounted onto printed circuit boards (PCBs), MOS devices are normally less
susceptible to electrostatic damage. However PCBs should be handled with care,
preferably by their edges and not by their tracks and pins, they should be transferred
directly from their packing to the equipment (or the other way around) and never
left exposed on the workbench.
•
Proper Environmental Conditions:
Preparation surface should be clean and dry.
Preparation environment should be clean and dry and provide protection such that
contaminates will not enter the equipment.
Work environment should allow enough space and adequate lighting to accurately
align components during assembly.
DMI Field Preparation Procedure
Perform Procedure 8-1 Preparing the replacement DMI assembly in the Field on page 8-11 in
the DMI preparation area. This procedure describes how to prepare a complete DMI assembly
from spares inventory that matches the failed DMI assembly. Up to two modems may be
installed into the DMI assembly. The following spares are required:
•
DMI assembly without modem boards (Motorola model STLN6325) includes DMI chassis
with controller board, fans and front panel.
•
CDMA 1X Modem Board (Motorola model SGLN6336); up to two modem boards as
required.
— AND/OR —
•
EV-DO Modem Board (Motorola model SGLN6494); up to two modem boards as required.
8-10
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Procedure 8-1
DMI (Digital Module Internal) Assembly
Preparing the replacement DMI assembly in the Field
AT THE OMCR
Ask the OMCR operator to get the EID information for the
failed DMI by entering the following command at the prompt:
omc-000000>DISPLAY BTS-- EID
Observe the displayed response. Record the model number of
the failed DMI and its modem board quantity and model numbers. Modem boards are
designated as HDMODEM. Check values for both HDMODEM numbers (i.e., 1, 2 for
DMI 1 and 21, 22 for DMI 2) on the affected DMI. If an HDMODEM number has a
blank value, then it does not exist.
IN THE DMI PREPARATION AREA
Based on the failed DMI EID information, determine the quantity and type of modem boards
needed to match that of the failed DMI.
Obtain the needed replacement units.
ESD handling precautions must be adhered to when handling and working on
the DMI assembly or the modem boards. Wear a conductive, high impedance
wrist strap during handling. All work performed on the DMI assembly and modem
boards must be done in an ESD protected work area.
Remove the DMI assembly, without modems, from its shipping packaging. Set the DMI
assembly handle side up (see Figure 8-1 Removing and installing Modem 1 on page 8-13)
onto a clean, ESD protected surface. Retain the packaging for later reuse.
Remove the modem board(s) from its shipping packaging. Retain the packaging for later
reuse.
Install Modem 1 into the DMI assembly by performing the following:
1.
Carefully place the front edge of Modem 1 under the lip of the DMI front panel.
2.
Align the modem-to-controller connector halves so that they will mate together. In
order to ensure proper connector alignment prior to connector insertion, verify that
the modem screws are aligned with chassis mounted standoffs and that screws are
not at an angle.
3.
Press down ﬁrmly on the black plastic modem connector handle until the connector
halves are fully seated. Approximately 70 N (15 lbs) of force is required to fully seat the
connector halves.
4.
Using a T20 TORX bit and torque driver, tighten the seven captive screws that retain
Modem 1 to the replacement DMI assembly. Tighten the screws to 1.6 - 1.8 N-m (14 16 in-lb).
5.
After tightening the screws, ﬁrmly squeeze the modem connectors together to make
sure that it is well seated. This may help prevent problems/errors that may not be
visible from the OMCR.
Continued
68P09283A64-3
8-11
FOA
SEP 2007
DMI (Digital Module Internal) Assembly
Chapter 8: DMI Replacement Procedures
Procedure 8-1 Preparing the replacement DMI assembly in the Field (Continued)
If the failed DMI assembly to be replace is equipped with Modem 2, go to step 8 otherwise
go to step 11.
Position the DMI assembly on its side with the front panel handle at the bottom (see
Figure 8-2 Removing and installing Modem 2 on page 8-14).
Remove the modem board from its shipping packaging. Retain the packaging for later reuse.
10
Install Modem 2 from the failed DMI assembly into the replacement DMI assembly by
performing the following:
11
1.
Carefully place the Modem 2 in the rear half of the DMI assembly.
2.
Align the modem-to-controller connector halves so that they will mate together. In
order to ensure proper connector alignment prior to connector insertion, verify that
the modem screws are aligned with chassis mounted standoffs and that screws are
not at an angle.
3.
Press down ﬁrmly on the black plastic modem connector handle until the connector
halves are fully seated. Approximately 70 N (15 lbs) of force is required to fully seat the
connector halves.
4.
Using a T20 TORX bit and torque driver, tighten the seven captive screws that retain
Modem 2 to the replacement DMI assembly. Tighten the screws to 1.6 - 1.8 N-m (14 16 in-lb).
5.
After tightening the screws, ﬁrmly squeeze the modem connectors together to make
sure that it is well seated. This may help prevent problems/errors that may not be
visible from the OMCR.
Place the ﬁeld prepared DMI assembly, with modems, into the original packaging that the
DMI assembly was received in.
To speed up code and data synchronization when this replacement DMI is placed
into the BTS (especially if it is the only DMI in the BTS), it is recommended to set
up a staging area for upgrading the code and base ﬁle for this replacement DMI to
the same version that is used at the site. Afterwards, the DMI may be packaged
and taken to the site.
12
Take the ﬁeld prepared DMI assembly, in it’s packaging, to the BTS site having the failed
DMI. Perform Procedure 8-2 Replacing the DMI on page 8-15.
Reference Diagrams
The following diagrams are used to aid the DMI replacement procedures.
8-12
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
DMI (Digital Module Internal) Assembly
Figure 8-1 shows the DMI assembly with its bottom side up for access to Modem 1.
Figure 8-1
Removing and installing Modem 1
Modem 1
7X
Captive Screws
Modem Connector Handle
HD MEZZ Connector
Controller Board
Handle
HD MEZZ Connector
Front Panel
ti-cdma-06168.eps
68P09283A64-3
8-13
FOA
SEP 2007
DMI (Digital Module Internal) Assembly
Chapter 8: DMI Replacement Procedures
Figure 8-2 shows the DMI assembly with its top side up for access to Modem 2.
Figure 8-2 Removing and installing Modem 2
Modem 2
7X
Captive Screws
Modem Connector Handle
HD MEZZ Connector
Controller Board
Front Panel
HD MEZZ Connector
Handle
ti-cdma-06169.eps
DMI Replacement Procedure
Procedure 8-2 Replacing the DMI on page 8-15 includes:
1.
Removing the failed DMI assembly from the UBS Macro BTS frame.
2.
Removing the replacement DMI assembly from its packaging.
3.
Installing the replacement DMI assembly, equipped with modems, into the UBS Macro
BTS frame.
8-14
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
DMI (Digital Module Internal) Assembly
Procedure 8-2 Replacing the DMI
AT THE OMCR
If you have not already asked the OMCR operator to get
the EID information for the failed DMI, then have the
OMCR operator enter the following command at the prompt:
omc-000000>DISPLAY BTS-- EID
Observe the displayed response. Record the model number of
the failed DMI and its modem board quantity and model numbers. Modem boards are
designated as HDMODEM. Check values for both HDMODEM numbers (i.e., 1, 2 for
DMI 1 and 21, 22 for DMI 2) on the affected DMI. If an HDMODEM number has a
blank value, then it does not exist.
For a UBS Macro BTS equipped with one DMI, go to step 3.
For a UBS Macro BTS equipped with more than one DMI, go to step 4.
Shut down site signaling functions according to Procedure 3-2 Shutdown
site signaling functions procedure for a packet BTS on page 3-5.
After this step is completed, go to step 8.
Determine if the failed DMI is the Site Master or not
by entering the following command at the prompt:
omc-000000>STATUS DMI--- PHY
Observe the displayed response. SITECTRL=YES means the DMI is Site Master.
SITECTRL=NO means the DMI is not Site Master.
For a failed DMI that is the Site Master, go to step 6.
For a failed DMI that is not the Site Master, go to step 7.
Reset the failed DMI Site Master and force the other DMI to become
the Site Master by entering the following command at the prompt:
omc-000000>RESET DMI--- UNC
Lock the failed DMI by entering the following command at the prompt:
omc-000000>LOCK DMI--- UNC
AT THE BTS SITE
Based on the failed DMI EID information, determine the type of DMI that matches the
failed DMI.
Obtain the needed replacement DMI.
10
Set the replacement DMI assembly, in its packaging, near the UBS Macro BTS frame.
Continued
68P09283A64-3
8-15
FOA
SEP 2007
DMI (Digital Module Internal) Assembly
Chapter 8: DMI Replacement Procedures
Procedure 8-2 Replacing the DMI (Continued)
11
Power down the failed DMI by setting the corresponding PDU DMI 20A circuit breaker to
the off position (pulled out).
Make sure the PDU DMI circuit breaker is set to OFF.
You will be disconnecting multiple cables from connectors. If necessary, use
masking tape and a marker and temporarily tag each cable as to the proper
connector before disconnection.
12
ESD handling precautions must be adhered to during this procedure. Wear a
conductive, high impedance wrist strap.
Plug the end of the ESD wrist strap into the UBS Macro BTS frame ESD jack This jack is
located in the middle of the upper XMI shelf bracket. Attach the wrist strap to your wrist.
13
Disconnect all of the cables connected to the front panel connectors on the failed DMI.
14
Turn the retaining fastener, located in the upper right corner of the failed DMI front panel,
CCW (Counter Clockwise) until resistance is felt. This indicates that the retaining fastener
is disengaged.
15
Grasp the failed DMI by the handle with one hand and pull outward. While supporting the
bottom of the DMI assembly with the other hand, slide the failed DMI assembly completely
out of its housing.
16
ESD handling precautions must be adhered to when handling the DMI assembly.
Set the failed DMI assembly onto a clean, ESD protected surface.
17
Remove the replacement DMI assembly from its packaging.
Continued
8-16
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
DMI (Digital Module Internal) Assembly
Procedure 8-2 Replacing the DMI (Continued)
18
Install the replacement DMI assembly, with modems, into the appropriate empty DMI
housing in the UBS Macro BTS frame by performing the following:
1.
Position the replacement DMI assembly on its bottom edge so that the front panel
handle is on the right and the retaining fastener is at the top.
2.
Pick up the replacement DMI assembly with two hands.
3.
Insert the rear of the replacement DMI assembly into the empty housing.
4.
Slide the replacement DMI assembly completely into the housing.
5.
Turn the retaining fastener CW (Clockwise) until ﬁnger tight to secure the DMI
assembly in the housing.
19
Place the failed DMI assembly, with modems, into the packaging that the replacement DMI
assembly came in.
20
Reconnect all of the cables to the corresponding connectors on the DMI front panel.
21
Power up the DMI by setting the corresponding PDU DMI 20A circuit breaker to the on
position (pushed in).
AT THE OMCR
22
For a UBS Macro BTS equipped with one DMI, go to step 23.
For a UBS Macro BTS equipped with more than one DMI, go to step 24.
23
Restore site signaling operations according to Procedure 3-3 Restore
site signaling operations procedure for a packet BTS on page 3-10.
After this step is completed, go to step 25.
24
Unlock the replacement DMI by entering the following command at the prompt:
omc-000000>UNLOCK DMI--- UNC.
AT THE BTS SITE
25
Perform the recommended optimization and testing on the UBS Macro BTS frame (see
Optimization Recommended on page 8-17).
26
Remove the failed DMI assembly, in its packaging, from the BTS site and do either of the
following:
•
Transport it to the DMI Preparation Area for dismantling (see Dismantling the failed
DMI assembly in the Field on page 8-18).
•
Return it to Motorola for repair.
Optimization Recommended
Perform the following BTS Optimization/ATP procedures:
68P09283A64-3
8-17
FOA
SEP 2007
DMI (Digital Module Internal) Assembly
Chapter 8: DMI Replacement Procedures
•
BTS Device Database Audit
•
BTS Device Database Update
•
Timing Initialization/Veriﬁcation
•
TX Path Calibration Audit
•
Spectral Purity TX Mask ATP (optional)
•
Waveform Quality (Rho) ATP (optional)
•
Code Domain Power ATP (optional)
•
FER Test
•
Alarm Veriﬁcation
Refer to the 1X UBS Macro BTS Optimization/ATP manual for the optimization procedures.
Dismantling the failed DMI assembly in the Field
Perform Procedure 8-3Dismantling the failed DMI assembly in the Field on page 8-18 only if
it is desired to reclaim known good FRUs from the failed DMI assembly. This procedure must
be performed in a work area that meets the criteria described in DMI Preparation Area on
page 8-10.
Procedure 8-3 Dismantling the failed DMI assembly in the Field
IN THE DMI PREPARATION AREA
ESD handling precautions must be adhered to when handling and working on
the DMI assembly or the modem boards. Wear a conductive, high impedance
wrist strap during handling. All work performed on the DMI assembly and modem
boards must be done in an ESD protected work area.
Remove the failed DMI assembly, with modems, from its packaging. Set the DMI assembly
handle side up (see Figure 8-1 Removing and installing Modem 1 on page 8-13) onto a
clean, ESD protected surface.
Continued
8-18
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
DMI (Digital Module Internal) Assembly
Procedure 8-3 Dismantling the failed DMI assembly in the Field (Continued)
Remove Modem 1 from the failed DMI assembly by performing the following:
1.
Use a T20 TORX bit/driver to completely loosen the seven captive screws that retain
Modem 1 to the failed DMI assembly.
2.
Grasp the modem connector handle with one hand and hold the assembly down with
the other hand.
3.
Pull up on the modem connector handle until the modem-to-controller connector
disengages.
4.
Carefully lift Modem 1 out of the failed DMI assembly.
5.
Place Modem 1 in the packaging that the replacement modem came in.
6.
If this modem is the failed module, return it to Motorola for repair, otherwise return it
to stock.
If the failed DMI assembly is equipped with Modem 2, go to step 4 otherwise go to step 6.
With the failed DMI assembly sitting on the clean ESD protected surface, turn the assembly
over so that the front panel handle is at the bottom (see Figure 8-2 Removing and installing
Modem 2 on page 8-14).
Remove Modem 2 from the failed DMI assembly by performing the following:
1.
Use a T20 TORX bit/driver to completely loosen the seven captive screws that retain
Modem 2 to the failed DMI assembly.
2.
Grasp the modem connector handle with one hand and hold the assembly down with
the other hand.
3.
Pull up on the modem connector handle until the modem-to-controller connector
disengages.
4.
Carefully lift Modem 2 out of the DMI assembly.
5.
Place Modem 2 in the packaging that the replacement modem came in.
6.
If this modem is the failed module, return it to Motorola for repair, otherwise return it
to stock.
Place the dismantled DMI assembly, without modems, into the packaging that the
replacement DMI assembly came in.
If the dismantled DMI assembly is the failed module, return it to Motorola for repair,
otherwise return it to stock.
68P09283A64-3
8-19
FOA
SEP 2007
Modem Boards
Chapter 8: DMI Replacement Procedures
Modem Boards
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The R20 UBS Macro BTS supports frame conﬁgurations with DMIs having up to two
modem boards that can be either 1X CDMA modem, EV-DO modem, or one of each.
1X Modem Board Description
The UBS Macro BTS frame DMIs may be equipped with up to two modem boards maximum.
These modem boards can be either 1X CDMA modem, EV-DO modem, or one of each.
The DMIs are located in the right side of the XMI shelf in the UBS Macro BTS frame (see
Figure 1-1 UBS Macro BTS low-tier/low-capacity frame (1000 mm rack) on page 1-27, Figure 1-2
Low capacity UBS Macro BTS starter frame (1800 mm rack) on page 1-28 and Figure 1-3 UBS
Macro BTS mid-capacity frame (1800 mm rack) on page 1-30).
Each frame DMI includes a DMI assembly that slides into a DMI outer housing. The frame
version DMI assembly consists of a chassis with a controller board, two rear mounted cooling
fans, a front panel and up to two modem boards that can be either 1X CDMA modem, EV-DO
modem, or one of each.
Each modem board mounts on opposite sides of the controller board. Modem board-to-controller
board electrical connection is via a printed circuit board mounted High Density Mezzanine
(HDMEZZ) type connector. Each modem board is secured to the DMI assembly chassis with
seven screws that are captivated to the modem board.
Figure 8-3 Removing and installing Modem 1 on page 8-28 and Figure 8-4 Removing and
installing Modem 2 on page 8-29 show the locations of Modem 1 and Modem 2 within the
DMI assembly.
The following rules apply to modem board location within the DMI:
•
For a DMI equipped with one 1X CDMA modem board, the 1X CDMA modem
board is always Modem 1 location
•
For a DMI equipped with one EV-DO modem board, the EV-DO modem board
is always Modem 2 location
•
For a DMI equipped with a combination of one 1X CDMA modem board and one
EV-DO modem board, the 1X CDMA modem board is always Modem 1 location
and the EV-DO modem board is always Modem 2 location
8-20
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Modem Boards
The modem replacement scenario is as follows:
1.
Remove the affected DMI assembly from the DMI outer housing located in the UBS
Macro BTS frame.
2.
Replace Modem 1 or Modem 2, whichever is applicable, in the affected DMI assembly.
3.
Install the affected DMI assembly equipped with the replacement modem into the DMI
outer housing located in the UBS Macro BTS frame.
System impact/considerations
If the UBS Macro BTS frame is equipped with one DMI, then performing this
replacement procedure will cause BTS downtime and suspend all call processing .
If the UBS Macro BTS frame is equipped with two DMIs, then performing this
replacement procedure for the Site Master DMI will temporarily cause BTS downtime.
This is due to soft reset of the non-Site Master DMI during the DMI swap procedure.
As soon as the DMI swap procedure is ﬁnished, the non-Site Master DMI becomes
the Site Master DMI and call processing resources are available, but temporarily
reduced until the failed DMI is replaced.
Performing this replacement procedure for a non-Site Master DMI will not cause
BTS downtime, but call processing resources will be temporarily reduced until the
failed DMI is replaced.
The affected DMI assembly must be removed from the UBS Macro BTS frame.
Call trafﬁc processing through the site will be temporarily interrupted by the modem board
replacement procedure.
Alarms will be generated during the modem board replacement procedure.
The DMI is not hot swappable.
DMI removal requires shutting down DC power to the DMI as well as disconnection of all
DMI cables.
All call trafﬁc processing through the site will be interrupted by the DMI removal.
Table 8-4 Modem Board Replacement Conditions
FRU
1X Modem Board
Ref Designator
Modem 1 or Modem
68P09283A64-3
What to Shutdown...
From the OMCR, lock the affected DMI being
removed. Then shut down the DMI DC input
power.
8-21
FOA
SEP 2007
Modem Boards
Chapter 8: DMI Replacement Procedures
Required items
Documents
•
1X UBS Macro BTS Optimization/ATP manual.
•
T20 TORX bit.
•
Torque driver.
•
ESD wrist straps.
•
ESD ﬂoor and bench top mats.
•
ESD containers.
Tools
Replacement Units
•
CDMA 1X Modem Board (Motorola model SGLN6336).
— OR —
•
EV-DO Modem Board (Motorola model SGLN6494).
Prerequisites
ESD handling precautions must be adhered to when handling and working on the DMI
assembly or the modem boards. Wear a conductive, high impedance wrist strap
during handling. All work performed on the DMI assembly and modem boards must
be done in an ESD protected work area.
The procedures in this chapter requires working on or around circuitry that is extremely
sensitive to ESD.
Coordinate this repair task with the OMCR operator.
8-22
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Modem Boards
Before You Begin
Before you begin, record the pertinent information in the following table (see Table 8-5):
Table 8-5
Item Number Replacement List
Item
Number
BTS number
DMI number
Modem number
Much of the modem board replacement procedure must be performed in a work area that meets
the criteria described in DMI Preparation Area on page 8-10.
Modem Board Replacement Procedure
Procedure 8-4 Replacing a Modem Board on page 8-23 includes:
1.
Removing the affected DMI assembly from the UBS Macro BTS frame.
2.
Replacing Modem 1 or Modem 2, whichever is applicable, in the affected DMI assembly.
3.
Installing the affected DMI assembly equipped with the replacement modem into the
UBS Macro BTS frame.
Procedure 8-4
Replacing a Modem Board
AT THE OMCR
Ask the OMCR operator to get the EID information for the
affected DMI by entering the following command at the prompt:
omc-000000>DISPLAY BTS-- EID
Observe the displayed response. Record the model number of
the failed DMI and its modem board quantity and model numbers. Modem boards are
designated as HDMODEM. Check values for both HDMODEM numbers (i.e., 1, 2 for
DMI 1 and 21, 22 for DMI 2) on the affected DMI. If an HDMODEM number has a
blank value, then it does not exist.
For a UBS Macro BTS equipped with one DMI, go to step 3.
For a UBS Macro BTS equipped with more than one DMI, go to step 4.
Shut down site signaling functions according to Procedure 3-2 Shutdown
site signaling functions procedure for a packet BTS on page 3-5.
After this step is completed, go to step 8.
Determine if the affected DMI is the Site Master or
not by entering the following command at the prompt:
omc-000000>STATUS DMI--- PHY
Observe the displayed response. SITECTRL=YES means the DMI is Site Master.
SITECTRL=NO means the DMI is not Site Master.
Continued
68P09283A64-3
8-23
FOA
SEP 2007
Modem Boards
Chapter 8: DMI Replacement Procedures
Procedure 8-4 Replacing a Modem Board (Continued)
For an affected DMI that is the Site Master, go to step 6
For an affected DMI that is not the Site Master, go to step 7.
Reset the affected DMI Site Master and force the other DMI to become
the Site Master by entering the following command at the prompt:
omc-000000>RESET DMI--- UNC
Lock the affected DMI by entering the following command at the prompt:
omc-000000>LOCK DMI--- UNC
AT THE BTS SITE
Based on the affected DMI EID information, determine the type (i.e., 1X CDMA or EV-DO) of
failed modem board in the affected DMI.
Obtain the needed replacement modem board and keep it in an ESD container. Also obtain
an ESD container to put the DMI assembly in.
10
Power down the affected DMI by setting the corresponding PDU DMI 20A circuit breaker to
the off position (pulled out).
Make sure the PDU DMI circuit breaker is set to OFF.
You will be disconnecting multiple cables from connectors. If necessary, use
masking tape and a marker and temporarily tag each cable as to the proper
connector before disconnection.
11
ESD handling precautions must be adhered to during this procedure. Wear a
conductive, high impedance wrist strap.
Plug the end of the ESD wrist strap into the UBS Macro BTS frame ESD jack This jack is
located in the middle of the upper XMI shelf bracket. Attach the wrist strap to your wrist.
12
Disconnect all of the cables connected to the affected DMI front panel connectors.
13
Turn the retaining fastener, located in the upper right corner of the affected DMI front
panel, CCW (Counter Clockwise) until resistance is felt. This indicates that the retaining
fastener is disengaged.
14
Grasp the affected DMI by the handle with one hand and pull outward. While supporting the
bottom of the DMI assembly with the other hand, slide the DMI assembly completely out
of its housing.
Continued
8-24
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Modem Boards
Procedure 8-4 Replacing a Modem Board (Continued)
15
ESD handling precautions must be adhered to when handling the DMI assembly.
Place the affected DMI assembly into an ESD container.
16
Transport the affected DMI assembly in its ESD container and the needed replacement
modem board in its ESD container to the DMI preparation area.
IN THE DMI PREPARATION AREA
17
ESD handling precautions must be adhered to when handling and working on the
DMI assembly or the modem boards. All work performed on the DMI assembly and
modem boards must be done in an ESD protected work area.
Set the affected DMI assembly in its ESD container and the replacement modem board in its
ESD container onto a clean, ESD protected surface.
18
Remove the DMI assembly and the replacement modem board from the ESD containers.
Retain the ESD containers for later reuse.
19
If replacing Modem 1, go to step 20.
If replacing Modem 2, go to step 24.
20
Position the DMI assembly on its side with the front panel handle at the top (see Figure 8-3).
21
Remove Modem 1 from the DMI assembly by performing the following:
1.
Use a T20 TORX bit/driver to completely loosen the seven captive screws that retain
Modem 1 to the DMI assembly.
2.
Grasp the modem extraction handle with one hand and hold the assembly down with
the other hand.
3.
Pull up on the modem extraction handle until the modem-to-controller connector
disengages.
4.
Carefully lift Modem 1 out of the DMI assembly.
Continued
68P09283A64-3
8-25
FOA
SEP 2007
Modem Boards
Chapter 8: DMI Replacement Procedures
Procedure 8-4 Replacing a Modem Board (Continued)
22
Install the replacement modem board into Modem 1 position of the DMI assembly by
performing the following:
1.
Carefully place the front edge of Modem 1 under the lip of the DMI front panel.
2.
Align the modem-to-controller connector halves so that they will mate together.
3.
Press down ﬁrmly on the modem just above the modem-to-controller connector until
the connector halves are fully seated.
4.
Using a T20 TORX bit and torque driver, tighten the seven captive screws that retain
Modem 1 to the DMI assembly. Tighten the screws to 1.6 - 1.8 N-m (14 - 16 in-lb).
5.
After tightening the screws, ﬁrmly squeeze the modem connectors together to make
sure that it is well seated. This may help prevent problems/errors that may not be
visible from the OMCR.
23
After Modem 1 is replaced, go to step 30.
24
Position the DMI assembly on its side with the front panel handle at the bottom (see
Figure 8-4).
25
Remove Modem 2 from the DMI assembly by performing the following:
26
27
1.
Use a T20 TORX bit/driver to completely loosen the seven captive screws that retain
Modem 2 to the DMI assembly.
2.
Grasp the modem extraction handle with one hand and hold the assembly down with
the other hand.
3.
Pull up on the modem extraction handle until the modem-to-controller connector
disengages.
4.
Carefully lift Modem 2 out of the DMI assembly.
Install the replacement modem board into Modem 2 position of the DMI assembly by
performing the following:
1.
Carefully place the Modem 2 in the rear half of the DMI assembly.
2.
Align the modem-to-controller connector halves so that they will mate together.
3.
Press down ﬁrmly on the modem just above the modem-to-controller connector until
the connector halves are fully seated.
4.
Using a T20 TORX bit and torque driver, tighten the seven captive screws that retain
Modem 2 to the DMI assembly. Tighten the screws to 1.6 - 1.8 N-m (14 - 16 in-lb).
5.
After tightening the screws, ﬁrmly squeeze the modem connectors together to make
sure that it is well seated. This may help prevent problems/errors that may not be
visible from the OMCR.
Insert the DMI assembly and the failed modem board into ESD containers. Transport both of
these items to the BTS site.
Continued
8-26
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Modem Boards
Procedure 8-4 Replacing a Modem Board (Continued)
AT THE BTS SITE
28
ESD handling precautions must be adhered to when handling the DMI assembly.
Plug the end of the ESD wrist strap into the UBS Macro BTS frame ESD jack This jack is
located in the middle of the upper XMI shelf bracket. Attach the wrist strap to your wrist.
29
Remove the DMI assembly from the ESD container.
30
Install the DMI assembly with replacement modem into its housing in the UBS Macro BTS
frame by performing the following:
1.
Position the DMI assembly on bottom edge so that the front panel handle is on the right
and the 1/4-turn retaining fastener is at the top.
2.
Pick up the DMI assembly with two hands.
3.
Insert the rear of the DMI assembly into its housing.
4.
Slide the DMI assembly completely into the housing.
5.
Turn the 1/4-turn retaining fastener one-quarter turn CW (Clockwise) to secure the
DMI assembly in the housing.
31
Reconnect all of the cables to the corresponding connectors on the DMI front panel.
32
Power up the DMI by setting the corresponding PDU DMI 20A circuit breaker to the on
position (pushed in).
AT THE OMCR
33
For a UBS Macro BTS equipped with one DMI, go to step 34.
For a UBS Macro BTS equipped with more than one DMI, go to step 35.
34
Restore site signaling operations according to Procedure 3-3 Restore
site signaling operations procedure for a packet BTS on page 3-10.
After this step is completed, go to step 25.
35
Unlock the affected DMI by entering the following command at the prompt:
omc-000000>UNLOCK DMI--- UNC
AT THE BTS SITE
36
Perform the recommended optimization and testing on the UBS Macro BTS frame (see
Optimization Recommended on page 8-29).
37
Return the failed modem board in its ESD container to Motorola for repair.
Reference Diagrams
The following diagrams are used to aid the modem board replacement procedure.
68P09283A64-3
8-27
FOA
SEP 2007
Modem Boards
Chapter 8: DMI Replacement Procedures
Figure 8-3 shows the DMI assembly with its bottom side up for access to Modem 1.
Figure 8-3 Removing and installing Modem 1
Modem 1
7X
Captive Screws
Modem Connector Handle
HD MEZZ Connector
Controller Board
Handle
HD MEZZ Connector
Front Panel
ti-cdma-06168.eps
8-28
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Modem Boards
Figure 8-4 shows the DMI assembly with its top side up for access to Modem 2.
Figure 8-4
Removing and installing Modem 2
Modem 2
7X
Captive Screws
Modem Connector Handle
HD MEZZ Connector
Controller Board
Front Panel
HD MEZZ Connector
Handle
ti-cdma-06169.eps
Optimization Recommended
Perform the following BTS Optimization/ATP procedures:
68P09283A64-3
8-29
FOA
SEP 2007
Modem Boards
Chapter 8: DMI Replacement Procedures
•
BTS Device Database Audit
•
BTS Device Database Update
•
Timing Initialization/Veriﬁcation
•
TX Path Calibration Audit
•
Spectral Purity TX Mask ATP (optional)
•
Waveform Quality (Rho) ATP (optional)
•
Code Domain Power ATP (optional)
•
FER Test
•
Alarm Veriﬁcation
Refer to the 1X UBS Macro BTS Optimization/ATP manual for the optimization procedures.
8-30
68P09283A64-3
FOA
SEP 2007
Chapter
PDU Replacement Procedures
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68P09283A64-3
SEP 2007
9-1
FOA
Power Distribution Unit (PDU)
Chapter 9: PDU Replacement Procedures
Power Distribution Unit (PDU)
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PDU Description
The PDU distributes +27 V DC output operating power to the UBS Macro BTS frame electronics.
The PDU is located near the bottom of the UBS Macro BTS frame. Figure 1-1 UBS Macro BTS
low-tier/low-capacity frame (1000 mm rack) on page 1-27, Figure 1-2 Low capacity UBS Macro
BTS starter frame (1800 mm rack) on page 1-28 and Figure 1-3 UBS Macro BTS mid-capacity
frame (1800 mm rack) on page 1-30 show the location of the PDU within the UBS Macro BTS
frame.
Figure 1-12 PDU front panel detail on page 1-42 shows the location of +27 V DC output power
connectors and circuit breakers on the front of the PDU.
Figure 1-13 PDU rear panel detail on page 1-43 shows the location of +27 V DC input power
cable/connector and +27 V DC input ﬁlter capacitor on the rear of the PDU.
The PDU ﬁlters the +27 V DC input power and then splits the ﬁltered +27 V DC input power
into +27 V DC branch circuits. Each branch circuit may be equipped with an integrated
circuit breaker and +27 V DC output power connector. Distribution is via output power cables
connected between the PDU +27 V DC output power connectors and the corresponding
equipment +27 V DC input power connector.
The circuit breakers provide current overload protection for the +27 V DC branch circuits
distributed to the corresponding UBS Macro BTS equipment. The circuit breakers also provide
ON/OFF switching of the +27 V DC output operating power to the corresponding equipment.
The PDU is shipped with the 1st +27 V DC input power cable/connector and ﬁlter
capacitor installed. The 2nd +27 V DC input power cable/connector and ﬁlter
capacitor are installed, on site, when a 3rd XMI is added to the frame.
The PDU is shipped with a circuit breaker and +27 V DC output power connector
installed for: XMI 1, DMI 1, DMI 2 and SSI 1. When other equipment is added to the
frame, the corresponding circuit breaker and +27 V DC output power connector
is installed on site.
9-2
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Power Distribution Unit (PDU)
The PDU contains the following:
•
Internal DC input reverse polarity/over-voltage/surge protection, ﬁltering, input/output
bus bars.
•
Up to two DC input power cables/connectors for +27 V DC input to the rear of the PDU.
•
PDU front panel with cutouts for integrated circuit breaker and +27 V DC output power
connectors. There are cutouts for the following circuit breakers/power connectors:
Four 90A circuit breakers/power connectors for XMI 1 through XMI 4.
Five 20A circuit breakers/power connectors for DMI 1 through DMI 5.
Two 20A circuit breakers/power connectors for SSI 1 and SSI 2.
Two 10A circuit breakers/power connectors for ACC 1 and ACC 2. Each ACC branch
circuit has three DC power connectors. Up to three accessories can share the 10A
branch circuit.
System impact/considerations
Performing this replacement procedure will cause BTS downtime and interrupt all
call processing.
Prior to replacing the PDU, the UBS Macro BTS site signaling is shutdown (i.e., disable the BTS
site) then the UBS Macro BTS frame is powered down.
Table 9-1 PDU Replacement Conditions
FRU
Power Distribution
Unit (PDU)
Ref Designator
PDU
What to Shutdown...
Shutdown site signaling functions and then power
down the frame.
Required items
Documents
•
1X UBS Macro BTS Optimization/ATP manual.
68P09283A64-3
9-3
FOA
SEP 2007
Power Distribution Unit (PDU)
Chapter 9: PDU Replacement Procedures
Tools
•
10 mm socket and ratchet
•
Torque driver
•
T25 TORX driver
Torque requirements
•
PDU mounting screws; 4.77 N-m (42 in-lb)
Replacement unit
•
PDU (Motorola model STPN4038)
Prerequisites
Coordinate this repair task with the OMCR operator.
Before you begin
Before you begin, record the pertinent information in Table 9-2.
Table 9-2
Item number replacement list
Item
Number
BTS number
Failed PDU
PDU replacement procedure
This procedure requires working on or around circuitry which is extremely sensitive
to ESD. Wear a conductive, high impedance wrist strap during the procedure. Use
appropriate safety measures.
9-4
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Power Distribution Unit (PDU)
To replace the PDU perform Procedure 9-1 and then Procedure 9-2.
Procedure 9-1 Removing the failed PDU
AT THE OMCR
Shut down site signaling functions according to Procedure 3-2 Shutdown site signaling
functions procedure for a packet BTS on page 3-5.
AT THE BTS SITE
Power down the UBS Macro BTS frame according to the section: Powering Down the
Frame on page 2-3.
Make sure the facility circuit breaker controlling external AC or DC power, whichever
is applicable, to the UBS Macro BTS frame is set to the OFF position.
You will be disconnecting multiple cables from connectors. If necessary, use
masking tape and a marker and temporarily tag each cable as to the proper
connector before disconnection.
Disconnect the +27 V DC output power cable from the +27 V DC input power cable on the
rear of the PDU by separating the orange connectors.
Disconnect all of the cables connected to the PDU front panel connectors.
If UBS Macro BTS frame is equipped with carrier strips go to step 6.
If UBS Macro BTS frame is not equipped with carrier strips go to step 7.
Remove the carrier strips from the frame as follows:
•
Using a 10 mm socket and ratchet, loosen and remove the 8 nuts that secure each
carrier strip to the frame.
•
Remove the carrier strip.
Loosen the two rack mounting screws in the keyhole slots of the PDU rack mounting ﬂanges.
Do not remove these two screws. Leave the screw heads extending 8 mm out from the rack
surface. These two screws will serve as hanger screws.
Completely loosen and remove the remaining two rack mounting screws in the PDU rack
mounting ﬂanges.
Grasp the PDU and lift it up and off of the hanger screws. Pull the PDU out of the rack
and set it out of the way.
68P09283A64-3
9-5
FOA
SEP 2007
Power Distribution Unit (PDU)
Procedure 9-2
Chapter 9: PDU Replacement Procedures
Installing the replacement PDU
AT THE BTS SITE
Properly position the replacement PDU in the rack location.
Align the keyhole slots of the PDU mounting ﬂanges with the two hanger screws and
hang the replacement PDU on the rack.
Insert screws in the two open slots of the PDU rack mounting ﬂanges.
Tighten all four PDU rack mounting screws to 4.77 N-m (42 in-lb).
Reconnect all applicable cables to the PDU front panel connectors.
Connect the +27 V DC output power cable to the +27 V DC input power cable on the rear of
the PDU by mating the orange connectors.
Power up the UBS Macro BTS frame according to the section: Power-up the Frame on
page 2-3.
There is no optimization required for the PDU replacement.
AT THE OMCR
Restore site signaling operations according to Procedure 3-3 Restore site signaling
operations procedure for a packet BTS on page 3-10.
9-6
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Breaker Module Assembly (BMA)
Breaker Module Assembly (BMA)
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BMA Description
The BMA is an integrated circuit breaker and output power connector. The circuit breaker
provides current overload protection for the output power connector.
The BMAs are located on the PDU front panel (see Figure 1-12 PDU front panel detail on page
1-42.)
The BMAs provide current overload protection for the +27 V DC branch circuits distributed
to the corresponding UBS Macro BTS equipment. The circuit breakers also provide ON/OFF
switching of the +27 V DC output operating power to the corresponding equipment.
The PDU in the UBS Macro BTS may be equipped with the following BMAs:
•
up to four 90A for XMI 1 – XMI 4.
•
up to ﬁve 20A for DMI 1 – DMI 5.
•
up to two 20A for SSI 1 – SSI 2.
•
up to two 10A for ACC 1 – ACC 2. This BMA has three output power connectors for
accessories.
The actual BMA equipage in the PDU is customer dependent.
Each BMA is arranged so that the circuit breaker is just below the corresponding DC output
power connector.
The PDU front panel cover must be removed to gain access to the BMAs (see Figure 9-1 PDU
Front Panel Removal/Installation Detail on page 9-12.)
Each BMA is screw mounted to the PDU output bus bars (i.e., +27 V DC and –0 V DC). This
physical mounting provides electrical contact between the bus bars and the BMA. Refer to
Figure 9-2 PDU Front Panel (cover removed) on page 9-12 for BMA screw mounting details.
System impact/considerations
Performing this replacement procedure will cause BTS downtime and interrupt all
call processing.
68P09283A64-3
9-7
FOA
SEP 2007
Breaker Module Assembly (BMA)
Chapter 9: PDU Replacement Procedures
Prior to replacing a BMA, the UBS Macro BTS site signaling is shutdown (i.e., disable the BTS
site) then the UBS Macro BTS frame is powered down.
Table 9-3
PDU Replacement Conditions
FRU
Breaker Module
Assembly (BMA)
Ref Designator
What to Shutdown...
XMI 1 – XMI 4, DMI
1 – DMI 5, SSI 1 –
SSI 2, ACC 1 – ACC
Shutdown site signaling functions and then power
down the frame.
Required items
Documents
•
1X UBS Macro BTS Optimization/ATP manual.
•
Torque driver
•
T25 TORX driver
Tools
Torque requirements
•
BMA mounting screws; 4.8 N-m (42.25 in-lb) ±10%
Replacement unit
•
90A BMA (Motorola model STLN4093), for XMIs
•
20A BMA (Motorola model STLN6472), for DMIs and SSIs
•
10A BMA (Motorola model STLN6475), for ACCs
Mounting screws are provided with each BMA; four screws with the 90A BMA,
two screws with the 20A BMA and two screws with the 10A BMA.
9-8
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Breaker Module Assembly (BMA)
Prerequisites
Coordinate this repair task with the OMCR operator.
Before you begin
Before you begin, record the pertinent information in Table 9-4.
Table 9-4 Item number replacement list
Item
Number
BTS number
Failed BMA
BMA replacement procedure
BMA mounting screws must be tightened to the specied torque to prevent arcing
and possible re hazard.
To replace a BMA perform Procedure 9-3 and then Procedure 9-4.
Procedure 9-3 Removing the failed BMA
AT THE OMCR
Shut down site signaling functions according to Procedure 3-2 Shutdown site signaling
functions procedure for a packet BTS on page 3-5.
AT THE BTS SITE
Power down the UBS Macro BTS frame according to the section: Powering Down the
Frame on page 2-3.
Continued
68P09283A64-3
9-9
FOA
SEP 2007
Breaker Module Assembly (BMA)
Chapter 9: PDU Replacement Procedures
Procedure 9-3 Removing the failed BMA (Continued)
Make sure the facility circuit breaker controlling external AC or DC power, whichever
is applicable, to the UBS Macro BTS frame is set to the OFF position.
You will be disconnecting multiple cables from connectors. If necessary, use
masking tape and a marker and temporarily tag each cable as to the proper
connector before disconnection.
Set all PDU front panel circuit breakers to the off (pulled out) position.
Disconnect all DC power cables from the PDU front panel. Dress these cables away from
the PDU front panel.
Remove the PDU front panel as follows:
•
See Figure 9-1 PDU Front Panel Removal/Installation Detail on page 9-12.
•
While depressing the front panel cover latch tab on the left and right front ends of the
PDU, slide the PDU front panel forward and off of the PDU.
Remove the BMA as follows:
•
See Figure 9-2 PDU Front Panel (cover removed) on page 9-12.
•
Locate the BMA to be removed.
•
Using a TORX T25 driver, remove the BMA mounting screws.
•
Remove the BMA from the PDU.
Procedure 9-4 Installing the replacement BMA
AT THE BTS SITE
BMA mounting screws must be tightened to the specied torque to prevent arcing
and possible re hazard.
Install the replacement BMA as follows:
•
See Figure 9-2 PDU Front Panel (cover removed) on page 9-12.
Continued
9-10
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Breaker Module Assembly (BMA)
Procedure 9-4 Installing the replacement BMA (Continued)
•
Properly position the replacement BMA on the PDU output bus bars.
•
Align the BMA screw holes with the appropriate screw holes on the PDU output bus
bars.
•
•
Insert the mounting screws.
Using a TORX T25 driver, tighten all BMA mounting screws to 4.8 N-m (42.25 in-lb).
Reattach the PDU front panel cover to the PDU as follows:
•
See Figure 9-1 PDU Front Panel Removal/Installation Detail on page 9-12.
•
Align the PDU front panel cover with the PDU circuit breaker actuators and power
connectors while inserting the PDU front panel cover latch tabs into the retainer on
the left and right front ends of the PDU.
•
Slide the PDU front panel cover onto the front of the PDU.
•
Firmly press on the ends of the PDU front panel until each end tab snaps into place.
Set all PDU front panel circuit breakers to the off (pulled out) position.
Reconnect all applicable cables to the PDU front panel connectors. Make sure that each
cable is connected to the proper PDU front panel power connector.
Power up the UBS Macro BTS frame according to the section: Power-up the Frame on
page 2-3.
There is no optimization required for the BMA replacement.
AT THE OMCR
Restore site signaling operations according to Procedure 3-3 Restore site signaling
operations procedure for a packet BTS on page 3-10.
Reference diagrams
Figure 9-1 shows details for removing and installing the PDU front cover. Figure 9-2 shows
BMA mounting details.
68P09283A64-3
9-11
FOA
SEP 2007
Breaker Module Assembly (BMA)
Chapter 9: PDU Replacement Procedures
Figure 9-1 PDU Front Panel Removal/Installation Detail
PDU
Front Panel
Cover Latch Tab
ti-cdma-06382.eps
Figure 9-2
PDU Front Panel (cover removed)
2X
4X
Mounting Screws
2X
Mounting Screws
Mounting Screws
2X
Mounting Screws
-0 V DC Bus Bar
+27 V DC Bus Bar
XMI 90A BMA
DMI 20A BMA
NOTE:
1. This diagram shows mounting details for each kind of BMA.
It does not to show the exact BMA equipage.
9-12
SSI 20A BMA
ACC 10A BMA
ti-cdma-06383.eps
68P09283A64-3
FOA
SEP 2007
Chapter
10
PSM Shelf Replacement Procedures
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68P09283A64-3
SEP 2007
10-1
FOA
–48 V DC Power Supply Module (PSM) Shelf
Chapter 10: PSM Shelf Replacement Procedures
–48 V DC Power Supply Module (PSM) Shelf
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–48 V DC PSM Shelf Description
The –48 V DC Power Supply Module (PSM) shelf is optional. It is used to convert –48 V DC
input power to +27V DC output operating power for distribution to the UBS Macro BTS frame
electronics.
The –48 V DC PSM shelf is located at the bottom of the UBS Macro BTS frame. Figure 1-1 UBS
Macro BTS low-tier/low-capacity frame (1000 mm rack) on page 1-27, Figure 1-2 Low capacity
UBS Macro BTS starter frame (1800 mm rack) on page 1-28 and Figure 1-3 UBS Macro BTS
mid-capacity frame (1800 mm rack) on page 1-30 show the location of the –48 V DC PSM shelf
within the UBS Macro BTS frame.
Figure 1-15 –48 V DC and 220 V AC PSM shelves front panel detail on page 1-46 shows the
location of I/O port connectors and PSM slots on the front of the –48 V DC PSM shelf.
Figure 1-16 –48 V DC PSM shelf rear panel detail on page 1-47 shows the location of input
connector and output cable on the rear of the –48 V DC PSM shelf.
The –48 V DC PSM shelf provides interconnection between the PSM slots DC I/O and the PSM
shelf DC I/O as well as interconnection between the PSM slots alarm/status I/O and the PSM
shelf alarm & control I/O.
The plug-in PSMs provide DC-DC conversion and +27V DC power output capabilities.
Up to three PSMs can be housed in the PSM shelf. A minimum of two PSMs are equipped for
redundancy. An empty PSM 3 slot is covered with a ﬁller panel.
PSM shelf plug-in modules
The –48 V DC PSM is a DC–DC converter. It operates from a nominal –48 V DC (–39 to –72 V)
input and provides a 2700 W, +27 V DC (+/– 0.1 V) output. The output is designed to support
load current sharing when conﬁgured for parallel output operation with other –48 V DC PSMs.
Three PSMs can provide a maximum of 8100 W, +27 V DC (+/– 0.1 V) output from the –48 V
DC PSM shelf.
Each PSM has internal fans that circulate cooling air from the front to the rear of the module.
Each PSM slides into a slot in the shelf. Blade type contacts, on the rear of the PSM, mate with
the DC I/O bus bar contacts in the PSM slot.
10-2
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
–48 V DC Power Supply Module (PSM) Shelf
PSM shelf DC I/O interconnection
Each PSM slot in the –48 V DC PSM shelf has two contacts (– feed and + return) for 48 V DC
input and two contacts (+ feed and – return) for +27 V DC output.
The –48 V DC PSM shelf has DC I/O bus bars at the rear of the shelf. The 48 V DC input contacts
of the three PSM slots are parallel connected to the DC input bus bars. The +27 V DC output
contacts of the three PSM slots are parallel connected to DC input bus bars.
The DC input bus bars are interconnected to the –48 V DC input power connector on the rear of
the PSM shelf.
The DC output bus bars are interconnected to the +27 V DC output power cable on the rear
of the PSM shelf. This cable connects to the +27 V DC input power cable on the rear of the
UBS Macro PDU. The PDU distributes the +27V DC operating power to the UBS Macro frame
electronics.
PSM shelf alarm and control I/O interconnection
Each PSM slot has a bulkhead connector. The I/O signals of each of these slot connectors are
interconnected to the ALARM & CONTROL connector on the front of the –48 V DC PSM shelf.
Each –48 V DC PSM has a rear panel status/alarm drawer connector that mates with the
bulkhead connector in the PSM slot of the PSM shelf. The I/O signals of this connector are
interconnected to the ALARM & CONTROL connector on the front of the –48 V DC PSM shelf.
This connector is cabled to the SSI front panel PSM connector. This allows the PSM alarm &
status to be monitored by the SSI. It also allows the front panel LEDs and module enable to
be controlled by the SSI.
PSM alarm & status signal inputs are current share, temp alarm, converter fail, fan fail, high
temp, low bus voltage, input voltage loss, presence, and EID.
The current share signal goes directly from one PSM to the others via PSM shelf backplane
looping without going to the SSI. Based on PSM alarm & status, the SSI outputs signals to
control the state of the LEDs.
The PSM shelf ALARM & CONTROL cable also contains the PSM enable line which
must be grounded at the SSI in order for the PSM to operate.
System impact/considerations
Performing this replacement procedure will cause BTS downtime and interrupt all
call processing.
68P09283A64-3
10-3
FOA
SEP 2007
–48 V DC Power Supply Module (PSM) Shelf
Chapter 10: PSM Shelf Replacement Procedures
Prior to replacing the –48 V DC PSM shelf, the UBS Macro BTS site signaling is shutdown (i.e.,
disable the BTS site) then the UBS Macro BTS frame is powered down.
Table 10-1 –48 V DC PSM Shelf Replacement Conditions
FRU
–48 V DC Power
Supply Module
(PSM) shelf
Ref Designator
What to Shutdown...
–48 V DC PSM shelf
Shutdown site signaling functions and then power
down the frame.
Required items
Documents
•
1X UBS Macro BTS Optimization/ATP manual.
•
Torque driver
•
T25 TORX driver
Tools
Torque requirements
•
PSM shelf mounting screws; 4.77 N-m (42 in-lb)
•
PSM captive M4 retaining thumbscrew, 2.37 N-m (21 in-lb)
Replacement unit
•
–48 V DC PSM shelf assembly (Motorola model STHN4089)
Prerequisites
Coordinate this repair task with the OMCR operator.
10-4
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
–48 V DC Power Supply Module (PSM) Shelf
Before you begin
Before you begin, record the pertinent information in Table 10-2.
Table 10-2 Item number replacement list
Item
Number
BTS number
Failed –48 V DC PSM shelf
number
–48 V DC PSM shelf replacement procedure
This procedure requires working on or around circuitry which is extremely sensitive
to ESD. Wear a conductive, high impedance wrist strap during the procedure. Use
appropriate safety measures.
To replace the –48 V DC PSM shelf perform Procedure 10-1 and then Procedure 10-2.
Procedure 10-1
Removing the failed –48 V DC PSM shelf
AT THE OMCR
Shut down site signaling functions according to Procedure 3-2 Shutdown site signaling
functions procedure for a packet BTS on page 3-5.
AT THE BTS SITE
Power down the –48 V DC UBS Macro BTS frame according to the section: Powering Down
the Frame on page 2-3.
Make sure the facility circuit breaker controlling external 48 V DC power to the –48
V DC PSM shelf is set to the OFF position.
Using a T25 TORX bit and driver, loosen the captive retaining thumbscrews on all of the PSM
modules until the thumbscrews are disengaged from the shelf.
Continued
68P09283A64-3
10-5
FOA
SEP 2007
–48 V DC Power Supply Module (PSM) Shelf
Procedure 10-1
Chapter 10: PSM Shelf Replacement Procedures
Removing the failed –48 V DC PSM shelf (Continued)
PSM weighs approximately 5 kg. Be careful when handling the PSM to prevent
damage to the equipment and personal injury.
Remove all the PSMs from the slots of the –48 V DC PSM shelf.
Grasp the handle on the front panel of the PSM with one hand. Slowly pull the PSM out of
the shelf slot while carefully supporting the bottom of the module with the other hand.
Remove the ﬁller panels (if used) from the slots of the –48 V DC PSM shelf. Using a T25
TORX bit and driver, loosen the captive retaining thumbscrew on the ﬁller panel until it is
disengaged from the shelf.
You will be disconnecting multiple cables from connectors. If necessary, use
masking tape and a marker and temporarily tag each cable as to the proper
connector before disconnection.
Disconnect the +27 V DC output power cable on the rear of the PSM shelf from the +27 V
DC input power cable on the rear of the PDU by separating the orange connectors.
Disconnect the –48 V DC input power cable from the rear of the –48 V DC PSM shelf by
separating the blue connectors.
Disconnect all of the cables connected to the –48 V DC PSM shelf front panel connectors.
Loosen the two rack mounting screws in the keyhole slots of the –48 V DC PSM shelf rack
mounting ﬂanges. Do not remove these two screws. Leave the screw heads extending 8 mm
out from the rack surface. These two screws will serve as hanger screws.
10
Completely loosen and remove the remaining rack mounting screws in the –48 V DC PSM
shelf rack mounting ﬂanges.
11
Grasp the –48 V DC PSM shelf and lift it up and off of the hanger screws. Pull the –48 V DC
PSM shelf out of the rack and set it out of the way.
Procedure 10-2 Installing the replacement –48 V DC PSM shelf
AT THE BTS SITE
Properly position the replacement –48 V DC PSM shelf in the rack location.
Align the keyhole slots of the PSM shelf rack mounting ﬂanges with the two hanger screws
and hang the shelf on the rack.
Insert screws in the 6 open slots of the PSM shelf rack mounting ﬂanges.
Tighten all 8 PSM shelf rack mounting screws to 4.77 N-m (42 in-lb).
Continued
10-6
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
–48 V DC Power Supply Module (PSM) Shelf
Procedure 10-2 Installing the replacement –48 V DC PSM shelf (Continued)
Reinstall all of the PSMs.
Properly orient each PSM and insert it into the appropriate PSM shelf slot.
Slowly slide the module into the shelf until the rear connectors are fully seated.
Make sure that the PSM is fully engaged with the shelf backplane slot connectors.
Using a T25 TORX bit and torque driver, tighten the captive retaining thumbscrews of
each PSM to 2.37 N-m (21 in-lb).
Reinstall ﬁller panels over any empty PSM slots of the –48 V DC PSM shelf.
Using a T25 TORX bit and driver, tighten the captive retaining thumbscrew on the ﬁller
panel to 2.37 N-m (21 in-lb).
Reconnect all applicable cables to the –48 V DC PSM shelf front panel connectors.
Connect the –48 V DC input power cable to the rear of the –48 V DC PSM shelf by mating
the blue connectors.
Connect the +27 V DC output power cable on the rear of the PSM shelf to the +27 V DC
input power cable on the rear of the PDU by mating the orange connectors.
Power up the –48 V DC UBS Macro BTS frame according to the section: Power-up the
Frame on page 2-3.
10
Observe the LEDs on the front of the PSMs.
The green LED should be on and the red LED should be off. This indicates normal operation.
There is no optimization required for the PSM shelf replacement.
AT THE OMCR
11
Restore site signaling operations according to Procedure 3-3 Restore site signaling
operations procedure for a packet BTS on page 3-10.
68P09283A64-3
10-7
FOA
SEP 2007
220 V AC Power Supply Module (PSM) Shelf
Chapter 10: PSM Shelf Replacement Procedures
220 V AC Power Supply Module (PSM) Shelf
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220 V AC PSM Shelf Description
The 220 V AC Power Supply Module (PSM) shelf is optional. It is used to convert 220 V AC
input power to +27V DC output operating power for distribution to the UBS Macro BTS frame
electronics.
The 220 V AC PSM shelf is located at the bottom of the UBS Macro BTS frame. Figure 1-1 UBS
Macro BTS low-tier/low-capacity frame (1000 mm rack) on page 1-27, Figure 1-2 Low capacity
UBS Macro BTS starter frame (1800 mm rack) on page 1-28 and Figure 1-3 UBS Macro BTS
mid-capacity frame (1800 mm rack) on page 1-30 show the location of the 220 V AC PSM shelf
within the UBS Macro BTS frame.
Figure 1-15 –48 V DC and 220 V AC PSM shelves front panel detail on page 1-46 shows the
location of I/O port connectors and PSM slots on the front of the 220 V AC PSM shelf.
Figure 1-17 220 V AC PSM shelf rear panel detail on page 1-48 shows the location of input
connector and output cable/connector on the rear of the 220 V AC PSM shelf.
The 220 V AC PSM shelf provides interconnection between the PSM slots AC input/DC output
and the PSM shelf AC input/DC output as well as interconnection between the PSM slots
alarm/status I/O and the PSM shelf alarm & control I/O.
The plug-in PSMs provide AC-DC conversion and +27V DC power output capabilities.
Up to three PSMs can be housed in the PSM shelf. A minimum of two PSMs are equipped for
redundancy. An empty PSM 3 slot is covered with a ﬁller panel.
PSM shelf plug-in modules
The 220 V AC PSM is an AC–DC power supply. It contains AC line input ﬁltering and AC–DC
rectiﬁcation. The rectiﬁer output is applied to a DC–DC converter.
The 220 V AC PSM operates from a nominal 220 V AC (154 to 300 V) input and provides a 2700
W, +27 V DC (+/– 0.1 V) output. The output is designed to support load current sharing when
conﬁgured for parallel output operation with other 220 V AC PSMs.
Three PSMs can provide a maximum of 8100 W, +27 V DC (+/– 0.1 V) output from the 220 V
AC PSM shelf.
Each PSM has internal fans that circulate cooling air from the front to the rear of the module.
Each PSM slides into a slot in the PSM shelf. The AC input & status/alarm drawer connector, on
the rear of the PSM, mates with a bulkhead connector in the PSM slot. Also blade type contacts,
on the rear of the PSM, mate with the DC output bus bar contacts in the PSM slot.
10-8
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
220 V AC Power Supply Module (PSM) Shelf
PSM shelf AC input interconnection
Each PSM slot in the 220 V AC PSM shelf has a bulkhead connector. The 220 V AC line input pins
from the bulkhead connector of the three PSM slots are parallel connected to the AC input buses.
Each 220 V AC PSM has a rear panel AC input & status/alarm drawer connector that mates with
a bulkhead connector in the PSM slot of the 220 V AC PSM shelf.
The AC line input buses in the 220 V AC PSM shelf are connected to the AC input terminal block
on the rear of the 220 V AC PSM shelf. This terminal block is wired to the AC input lines.
The 220 V AC PSM shelf and 220 V AC PSMs can operate with any one of the following AC
power inputs:
•
Single-Phase
•
3-Phase STAR
•
3-Phase DELTA
PSM shelf DC output interconnection
Each PSM slot in the 220 V AC PSM shelf has two contacts (+ feed and – return) for +27 V
DC output.
The 220 V AC PSM shelf has DC output bus bars at the rear of the shelf. The +27 V DC output
contacts of the three PSM slots are parallel connected to DC input bus bars.
The DC input bus bars are interconnected to the 220 V AC input power connector on the rear of
the PSM shelf.
The DC output bus bars are interconnected to the +27 V DC output power cable on the rear
of the PSM shelf. This cable connects to the +27 V DC input power cable on the rear of the
UBS Macro PDU. The PDU distributes the +27V DC operating power to the UBS Macro frame
electronics.
In addition, the DC output bus bars are interconnected to the +27 V DC output power connector
on the rear of the 220 V AC PSM shelf. Usage of this connector is optional. It can be cabled to
back-up batteries for battery charging purposes.
68P09283A64-3
10-9
FOA
SEP 2007
220 V AC Power Supply Module (PSM) Shelf
Chapter 10: PSM Shelf Replacement Procedures
PSM shelf alarm and control I/O interconnection
Each PSM slot has a bulkhead connector. The status/alarm I/O signals of each of these slot
connectors are interconnected to the ALARM & CONTROL connector on the front of the 220 V
AC PSM shelf.
Each 220 V AC PSM has a rear panel status/alarm drawer connector that mates with the
bulkhead connector in the PSM slot of the PSM shelf. The I/O signals of this connector are
interconnected to the ALARM & CONTROL connector on the front of the 220 V AC PSM shelf.
This connector is cabled to the SSI front panel PSM connector. This allows the PSM alarm &
status to be monitored by the SSI. It also allows the front panel LEDs and module enable to
be controlled by the SSI.
PSM alarm & status signal inputs are current share, temp alarm, converter fail, fan fail, high
temp, low bus voltage, input voltage loss, presence, and EID.
The current share signal goes directly from one PSM to the others via PSM shelf backplane
looping without going to the SSI. Based on PSM alarm & status, the SSI outputs signals to
control the state of the LEDs.
The PSM shelf ALARM & CONTROL cable also contains the PSM enable line which
must be grounded at the SSI in order for the PSM to operate.
System impact/considerations
Performing this replacement procedure will cause BTS downtime and interrupt all
call processing.
Prior to replacing the 220 V AC PSM shelf, the UBS Macro BTS site signaling is shutdown (i.e.,
disable the BTS site) then the UBS Macro BTS frame is powered down.
Table 10-3
220 V AC PSM Shelf Replacement Conditions
FRU
220 V AC Power
Supply Module
(PSM) shelf
Ref Designator
What to Shutdown...
220 V AC PSM shelf
Shutdown site signaling functions and then power
down the frame.
10-10
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
220 V AC Power Supply Module (PSM) Shelf
Required items
Documents
•
1X UBS Macro BTS Optimization/ATP manual.
•
Torque driver
•
T25 TORX driver
•
T20 TORX bit with 12-inch extension
•
Flat blade screwdriver
Tools
Torque requirements
•
PSM shelf mounting screws; 4.77 N-m (42 in-lb)
•
PSM captive M4 retaining thumbscrew, 2.37 N-m (21 in-lb)
•
Terminal block cover box screws, 1.6 - 1.8 N-m (14 - 16 in-lb)
Replacement unit
•
220 V AC PSM shelf assembly (Motorola model STHN4092)
Prerequisites
Coordinate this repair task with the OMCR operator.
68P09283A64-3
10-11
FOA
SEP 2007
220 V AC Power Supply Module (PSM) Shelf
Chapter 10: PSM Shelf Replacement Procedures
Before you begin
Before you begin, record the pertinent information in Table 10-4.
Table 10-4 Item number replacement list
Item
Number
BTS number
Failed 220 V AC PSM shelf
number
220 V AC PSM shelf replacement procedure
This procedure requires working on or around circuitry which is extremely sensitive
to ESD. Wear a conductive, high impedance wrist strap during the procedure. Use
appropriate safety measures.
To replace the 220 V AC PSM shelf perform Procedure 10-3 and then Procedure 10-4.
Procedure 10-3
Removing the failed 220 V AC PSM shelf
AT THE OMCR
Shut down site signaling functions according to Procedure 3-2 Shutdown site signaling
functions procedure for a packet BTS on page 3-5.
AT THE BTS SITE
Power down the 220 V AC UBS Macro BTS frame according to the section: Powering Down
the Frame on page 2-3.
Make sure the facility circuit breaker controlling external 220 V AC power to the
220 V AC PSM shelf is set to the OFF position.
Using a T25 TORX bit and driver, loosen the captive retaining thumbscrews on all of the PSM
modules until the thumbscrews are disengaged from the shelf.
Continued
10-12
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
220 V AC Power Supply Module (PSM) Shelf
Procedure 10-3 Removing the failed 220 V AC PSM shelf (Continued)
PSM weighs approximately 5 kg. Be careful when handling the PSM to prevent
damage to the equipment and personal injury.
Remove all the PSMs from the slots of the 220 V AC PSM shelf.
Grasp the handle on the front panel of the PSM with one hand. Slowly pull the
PSM out of the shelf slot while carefully supporting the bottom of the module with the
other hand.
Remove the ﬁller panels (if used) from the slots of the 220 V AC PSM shelf. Using a T25
TORX bit and driver, loosen the captive retaining thumbscrew on the ﬁller panel until it is
disengaged from the shelf.
You will be disconnecting multiple cables/wires from connectors. If necessary,
use masking tape and a marker and temporarily tag each cable as to the proper
connector before disconnection.
Disconnect the +27 V DC output power cable on the rear of the PSM shelf from the +27 V
DC input power cable on the rear of the PDU by separating the orange connectors.
Disconnect the back-up battery cable (if used) from the +27 V DC output power connector
on the rear of the 220 V AC PSM shelf by separating the orange connectors.
Using a TORX T20 bit and driver, remove the 4 screws securing the terminal block cover box
to the 220 V AC PSM shelf. Remove the terminal block cover box from the PSM shelf.
The terminal block cover box may have conduit attached to it. It may be necessary
to free the conduit so that the box can be moved out of the way.
Using a ﬂat blade screwdriver, turn the ground terminal
screw counter clockwise (CCW) to open the terminal.
Disconnect the ground wire from the terminal.
10
Using a ﬂat blade screwdriver, turn each AC supply line wire
terminal screw counter clockwise (CCW) to open the terminals.
Disconnect the AC supply line wires from the terminals.
11
Disconnect all of the cables connected to the 220 V AC PSM shelf front panel connectors.
12
Using TORX T25 driver, loosen the two rack mounting screws in the keyhole slots of the
220 V AC PSM shelf rack mounting ﬂanges. Do not remove these two screws. Leave the
screw heads extending 8 mm out from the rack surface. These two screws will serve as
hanger screws.
Continued
68P09283A64-3
10-13
FOA
SEP 2007
220 V AC Power Supply Module (PSM) Shelf
Chapter 10: PSM Shelf Replacement Procedures
Procedure 10-3 Removing the failed 220 V AC PSM shelf (Continued)
13
Using TORX T25 driver, completely loosen and remove the remaining rack mounting screws
in the 220 V AC PSM shelf rack mounting ﬂanges.
14
Grasp the 220 V AC PSM shelf and lift it up and off of the hanger screws. Pull the 220 V AC
PSM shelf out of the rack and set it out of the way.
Procedure 10-4 Installing the replacement 220 V AC PSM shelf
AT THE BTS SITE
Using a TORX T20 bit and driver, remove the 4 screws securing the terminal block cover
box to the rear of the replacement 220 V AC PSM shelf. Remove the terminal block cover
box from the PSM shelf.
Make sure that the AC line terminal block on the replacement 220 V AC PSM shelf is properly
conﬁgured with insertion bridging. It should match that of the failed 220 V AC PSM shelf.
If necessary, use a ﬂat blade screwdriver to open terminals (turn screws CCW) for insertion
bridge placement. Place an insertion bridge into the proper terminals. While holding
the bridge with one hand, turn the corresponding terminal screws CW until the bridge
is securely clamped.
Properly position the replacement 220 V AC PSM shelf in the rack location.
Align the keyhole slots of the PSM shelf rack mounting ﬂanges with the two hanger screws
and hang the shelf on the rack.
Insert screws in the 6 open slots of the PSM shelf rack mounting ﬂanges.
Using TORX T25 driver, tighten all 8 PSM shelf screws to 4.77 N-m (42 in-lb).
Reinstall all of the PSMs.
Properly orient each PSM and insert it into the appropriate PSM shelf slot.
Slowly slide the module into the shelf until the rear connectors are fully seated.
Make sure that the PSM is fully engaged with the shelf backplane slot connectors.
Using a T25 TORX bit and torque driver, tighten the captive retaining thumbscrews of
each PSM to 2.37 N-m (21 in-lb).
Reinstall ﬁller panels over any empty PSM slots of the 220 V AC PSM shelf.
Using a T25 TORX bit and driver, tighten the captive retaining thumbscrew on the ﬁller
panel to 2.37 N-m (21 in-lb).
Reconnect all applicable cables to the 220 V AC PSM shelf front panel connectors.
Connect the 220 V AC input lines to the proper terminals on the
rear of the 220 V AC PSM shelf by performing the following:
•
Use a ﬂat blade screwdriver to open the terminals (turn screws CCW)
•
Insert the appropriate wire into the terminal.
•
While holding the wire with one hand, turn the corresponding terminal screw CW until
the wire is securely clamped. Tighten the terminal screw to 4.0 - 4.5 N-m (35 - 40 in-lb).
Continued
10-14
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
220 V AC Power Supply Module (PSM) Shelf
Procedure 10-4 Installing the replacement 220 V AC PSM shelf (Continued)
10
Using a ﬂat blade screwdriver, turn the ground terminal screw counter clockwise (CCW)
until the terminal is fully open. Insert the earth ground wire into the ground terminal.
Turn the ground terminal screw clockwise (CW) to close the terminal and secure the wire.
Tighten the terminal screw to 4.0 - 4.5 N-m (35 - 40 in-lb).
11
Place the cover box, with conduit attached, in position over the AC input terminal block.
12
Insert the 4 screws to secure the cover box to the PSM shelf. Ensure that the wires are not
pinched.
13
Using a TORX T20 bit and driver, tighten the 4 screws to 1.6 - 1.8 N-m (14 - 16 in-lb).
14
Connect the back-up battery cable (if used) the +27 V DC output power connector on the
rear of the 220 V AC PSM shelf by mating the orange connectors.
15
Connect the +27 V DC output power cable on the rear of the PSM shelf to the +27 V DC
input power cable on the rear of the PDU by mating the orange connectors.
16
Power up the 220 V AC UBS Macro BTS frame according to the section: Power-up the
Frame on page 2-3.
17
Observe the LEDs on the front of the PSMs.
The green LED should be on and the red LED should be off. This indicates normal operation.
There is no optimization required for the PSM shelf replacement.
AT THE OMCR
18
Restore site signaling operations according to Procedure 3-3 Restore site signaling
operations procedure for a packet BTS on page 3-10.
68P09283A64-3
10-15
FOA
SEP 2007
Power Supply Modules (PSMs)
Chapter 10: PSM Shelf Replacement Procedures
Power Supply Modules (PSMs)
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PSM Descriptions
Up to three PSMs can be housed in the PSM shelf. A minimum of two PSMs are equipped for
redundancy. An empty PSM 3 slot is covered with a ﬁller panel. Refer to Figure 1-15 –48 V DC
and 220 V AC PSM shelves front panel detail on page 1-46.
There are two types of PSMs that can be used with the UBS Macro BTS PSM shelf. These
are as follows:
•
–48 V DC PSM
•
220 V AC PSM
The –48 V DC PSMs are only used in a –48 V DC PSM shelf.
The 220 V AC PSMs are only used in a 220 V AC PSM shelf.
Never plug a –48 V DC PSM into a 220 V AC PSM shelf.
Never plug a 220 V AC PSM into a -–48 V DC PSM shelf.
10-16
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Power Supply Modules (PSMs)
–48 V DC PSM Description
The –48 V DC PSM is a DC–DC converter. It operates from a nominal –48 V DC (–39 to –72 V)
input and provides a 2700 W, +27 V DC (+/– 0.1 V) output. The output is designed to support
load current sharing when conﬁgured for parallel output operation with other –48 V DC PSMs.
The PSM has internal fans that circulate cooling air from the front to the rear of the module.
Each –48 V DC PSM slides into a slot in the –48 V DC PSM shelf. Blade type contacts, on the
rear of the –48 V DC PSM, mate with the DC input/output bus bars at the rear of the –48 V
DC PSM shelf.
Each –48 V DC PSM has a rear panel status/alarm drawer connector that mates with a bulkhead
connector in the PSM slot of the PSM shelf. The I/O signals of this connector are interconnected
to the ALARM & CONTROL connector on the front of the –48 V DC PSM shelf. This connector
is cabled to the SSI front panel PSM connector. This allows the PSM alarm & status to be
monitored by the SSI. It also allows the front panel LEDs and module enable to be controlled
by the SSI.
PSM alarm & status signal inputs are current share, temp alarm, converter fail, fan fail, high
temp, low bus voltage, input voltage loss, presence, and EID.
The current share signal goes directly from one PSM to the others via PSM shelf backplane
looping without going to the SSI. Based on PSM alarm & status, the SSI outputs signals to
control the state of the LEDs.
The PSM shelf ALARM & CONTROL cable also contains the PSM enable line which
must be grounded at the SSI in order for the PSM to operate.
68P09283A64-3
10-17
FOA
SEP 2007
Power Supply Modules (PSMs)
Chapter 10: PSM Shelf Replacement Procedures
220 V AC PSM Description
The 220 V AC PSM is an AC–DC power supply. It contains AC line input ﬁltering and AC–DC
rectiﬁcation. The rectiﬁer output is applied to a DC–DC converter.
The 220 V AC PSM operates from a nominal 220 V AC (154 to 300 V) input and provides a 2700
W, +27 V DC (+/– 0.1 V) output. The output is designed to support load current sharing when
conﬁgured for parallel output operation with other 220 V AC PSMs. The PSM has internal fans
that circulate cooling air from the front to the rear of the module.
Each 220 V AC PSM slides into a slot in the 220 V AC PSM shelf. Blade type contacts, on the rear
of the 220 V AC PSM, mate with the DC output bus bars at the rear of the 220 V AC PSM shelf.
Each 220 V AC PSM has a rear panel AC input & status/alarm drawer connector that mates with
a bulkhead connector in the PSM slot of the 220 V AC PSM shelf. The AC line input buses in
the 220 V AC PSM shelf connect to the AC input lines of the AC input & status/alarm drawer
connector. The status/alarm I/O signals of this connector are interconnected to the ALARM &
CONTROL connector on the front of the PSM shelf. This connector is cabled to the SSI front
panel PSM connector. This allows the PSM alarm & status to be monitored by the SSI. It also
allows the front panel LEDs and module enable to be controlled by the SSI.
PSM alarm & status signal inputs are current share, temp alarm, converter fail, fan fail, high
temp, low bus voltage, input voltage loss, presence, and EID.
The current share signal goes directly from one PSM to the others via PSM shelf backplane
looping without going to the SSI. Based on PSM alarm & status, the SSI outputs signals to
control the state of the LEDs.
The PSM shelf ALARM & CONTROL cable also contains the PSM enable line which
must be grounded at the SSI in order for the PSM to operate.
System impact/considerations
This replacement procedure does not require system downtime. However, alarms may be
generated.
Two PSMs provide N + 1 redundancy and load sharing for its respective PSM shelf. In the event
of a PSM failure, one PSM is capable of providing operating power for its respective PSM shelf.
However, a failed PSM should be replaced as soon as possible to maintain redundancy.
The PSM is hot–swappable.
Table 10-5 FRU replacement conditions
FRU
Ref Designator
What to Shutdown...
–48 V DC Power
Supply Module
–48 V DC PSM
Nothing; FRU is hot swappable and redundant.
220 V AC Power
Supply Module
220 V AC PSM
Nothing; FRU is hot swappable and redundant.
10-18
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Power Supply Modules (PSMs)
PSM Front and Rear Panel Details
–48 V DC PSM Front & Rear Panels
Figure 10-1shows the –48 V DC PSM front and rear panel details.
The ﬁgure below shows the PSM front and rear panels rotated 90 degrees Counter
Clockwise (CCW) from when it is installed in the PSM shelf.
68P09283A64-3
10-19
FOA
SEP 2007
Power Supply Modules (PSMs)
Chapter 10: PSM Shelf Replacement Procedures
Figure 10-1 –48 V DC PSM Front & Rear Details
Front
Test
Test Port (+)
Red
Port (-)
LED
Green
LED
Handle
Captive M4 Retaining
Thumbscrew
Air Inlet
Rear
48V DC
Input
27V DC
Output
(+)
Return
(-)
Feed
(+)
Feed
(-)
Return
Status/Alarm
Drawer Connector
Air Outlet
ti-cdma-05920.eps
220 V AC PSM Front & Rear Panels
Figure 3-6 shows the 220 V AC PSM front and rear panel details.
10-20
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Power Supply Modules (PSMs)
The ﬁgure below shows the PSM front and rear panels rotated 90 degrees Counter
Clockwise (CCW) from when it is installed in the PSM shelf.
68P09283A64-3
10-21
FOA
SEP 2007
Power Supply Modules (PSMs)
Figure 10-2
Chapter 10: PSM Shelf Replacement Procedures
220 V AC PSM Front & Rear Details
Front
Test
Test Port (+) Red
Port (-)
LED
Green
LED
Handle
Captive M4 Retaining
Thumbscrew
Air Inlet
Rear
27V DC
Output
(+)
Feed
(-)
Return
Air Outlet
AC Input and
Status/Alarm
Drawer Connector
ti-cdma-05921.eps
10-22
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Power Supply Modules (PSMs)
Front Panel LEDs
Two LEDs are on the front panel of each PSM with the following functionality:
•
A GREEN LED is displayed when the PSM is enabled and the output voltage is present.
This LED remains on during a minor alarm condition.
•
A RED LED is displayed when a hard failure occurs (for example; a Fan failure or Converter
failure).
Front Panel Test Ports
A high impedance DC voltmeter can be connected between the two test ports on the front panel
to monitor the DC output voltage.
Rear Panel Connectors
Blade type contacts, on the rear of the PSM, mate with the DC input/output bus bars at the
rear of the PSM shelf.
The status/alarm drawer connector on the rear of the PSM mates with a bulkhead connector
at the rear of the PSM shelf. This connector is cabled to the PSM alarm connector on the
front of the PSM shelf.
Required items
Documents
•
None
•
Torque driver
•
T25 TORX driver
Tools
Torque requirements
•
PSM captive M4 retaining thumbscrew, 2.37 N-m (21 in-lb)
Replacement unit
•
–48 V DC Power Supply Module (–48 V DC PSM) — Motorola model STPN4037
•
220 V AC Power Supply Module (220 V AC PSM) — Motorola model STPN4036
68P09283A64-3
10-23
FOA
SEP 2007
Power Supply Modules (PSMs)
Chapter 10: PSM Shelf Replacement Procedures
Prerequisites
Before you begin
Before you begin, record the pertinent information in Table 10-6.
Table 10-6 Item number replacement list
Item
Number
BTS number
Failed –48 V DC PSM number
Failed 220 V AC PSM number
PSM replacement procedure
The PSM weighs approximately 5 kg. Be careful when handling the PSM to prevent
damage to the equipment and personal injury.
Wearing anti–static wrist straps during this procedure is not recommended.
Occasionally during this procedure, touch the frame ground to dissipate static
electricity.
Perform the steps described in Procedure 10-5 to replace either a –48 V DC PSM or a 220 V
AC PSM.
Procedure 10-5
Replacing a PSM
Notify the OMC–R operator that you are replacing the -48 V DC/220 V AC PSM.
It will be helpful if the OMC–R operator executes “ENABLE EVENTS” command at the CLI
session of the OMC–R to monitor alarms. This command is optional and may not be useful if
executed during a high CPU utilization time.
Using a T25 TORX bit and driver, loosen the captive retaining thumbscrew until it is
disengaged from the shelf.
Continued
10-24
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
Power Supply Modules (PSMs)
Procedure 10-5 Replacing a PSM (Continued)
PSM weighs approximately 5 kg. Be careful when handling the PSM to prevent
damage to the equipment and personal injury.
Grasp the handle on the front panel of the PSM with one hand. Slowly pull the PSM out of
the shelf slot while carefully supporting the bottom of the module with the other hand.
Properly orient the replacement PSM and insert it into the slot. Slowly
slide the module into the shelf until the rear connectors are fully seated.
Make sure that the PSM is fully engaged with the shelf backplane slot connectors.
Using a T25 TORX bit and torque driver, tighten the captive retaining thumbscrew to 2.37
N-m (21 in-lb).
Observe the LEDs on the PSM.
The green LED should be on and the red LED should be off. This indicates normal operation.
There is no optimization required for the PSM replacement.
Notify the OMC–R operator that the procedure is complete and that alarms should be cleared.
OMC–R operator execute “DISABLE EVENTS” command to discontinue monitoring of alarms.
68P09283A64-3
SEP 2007
10-25
FOA
Power Supply Modules (PSMs)
Chapter 10: PSM Shelf Replacement Procedures
10-26
68P09283A64-3
FOA
SEP 2007
Chapter
11
RX Splitter Replacement Procedure
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68P09283A64-3
SEP 2007
11-1
FOA
RX Splitter
Chapter 11: RX Splitter Replacement Procedure
RX Splitter
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RX Splitter Description
The RX splitter is only used in UBS Macro BTS frames equipped with more than one XMI.
The RX splitter used in the UBS Macro BTS frame is wide band and handles either 1.9 GHz or
800 MHz RX signals.
The RX splitter is a passive device requiring no DC input operating power.
For the RX splitter location in the UBS Macro frame, refer to Figure 1-3 UBS Macro BTS
mid-capacity frame (1800 mm rack) on page 1-30.
Figure 1-14 RX splitter front panel detail on page 1-44 shows the location of the RX splitter RF
I/O port connectors.
The XMI RX expansion ports (EXP OUT and EXP IN) are connected to the RX splitter.
Currently, UBS Macro BTS frames do not support XMI 3 and XMI 4. These will be
supported in the future.
In frames equipped with an RX splitter, XMI 1 provides RX main RF antenna signal outputs for
each sector to the RX splitter and XMI 2 provides RX diversity RF antenna signal outputs
for each sector to the RX splitter. The RX splitter splits the RX main RF antenna signals into
outputs to XMI 2, XMI 3 and XMI 4. The RX splitter splits the RX diversity RF antenna signals
into outputs to XMI 1, XMI 3 and XMI 4.
The RX splitter XMI 3 and XMI 4 EXP OUT and EXP IN connectors are not currently used.
System impact/considerations
Performing this replacement procedure will not cause BTS downtime or suspend
any call processing.
Receive diversity on all sectors will be interrupted during the procedure.
TX RF output power on each sector is not affected.
Because the RX splitter is completely passive, the likelihood of its failure is minimal.
11-2
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
RX Splitter
The RX splitter is not redundant.
The following strategy is used during replacement of the RX splitter. When the RX splitter
is disconnected/removed:
•
XMI 1 remains connected to the RX main RF antenna signal outputs for each sector, but
has no connection to the RX diversity RF antenna signal outputs for each sector.
•
XMI 2 remains connected to the RX diversity RF antenna signal outputs for each sector,
but has no connection to the RX main RF antenna signal outputs for each sector.
Alarms will be reported during the replacement procedure.
After the RX splitter is replaced, all affected RX paths must be tested, and if necessary
reoptimized to ensure accurate RF power levels. Refer to the 1X UBS Macro BTS
Optimization/ATP manual for test and optimization procedures.
A thorough troubleshooting of the RX antenna paths and all associated XMIs and cables is
required to pinpoint a failure to the RX splitter.
Table 11-1
FRU Replacement Conditions
FRU
RX Splitter
Ref Designator
Not Applicable
What to Shut Down...
Nothing
Required Items
Documents
•
1X UBS Macro BTS Optimization/ATP manual.
•
T25 TORX bit
•
Torque driver
Tools
Torque Requirements
•
M5 mounting screws - 4.77 N-m (42 in-lb)
Replacement Unit
•
Wide band (800 MHz through 2.1 GHz RF bands) RX splitter (Motorola model STRG4029)
68P09283A64-3
11-3
FOA
SEP 2007
RX Splitter
Chapter 11: RX Splitter Replacement Procedure
Prerequisite
Coordinate this repair task with the OMCR operator.
Before you begin
Before you begin, enter the information into the following replacement list table.
Table 11-2
Item Number Replacement List
Item
Number
BTS number
Failed RX splitter number
RX Splitter Replacement Procedure
This procedure requires working on or around circuitry which is extremely sensitive to
ESD. Wear a conductive, high impedance wrist strap during the procedure.
Use appropriate safety measures.
11-4
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
RX Splitter
Perform the steps in Procedure 11-1 to replace an RX splitter.
Procedure 11-1 Replacing an RX Splitter
AT THE BTS SITE
Wear a conductive, high impedance wrist strap.
Disconnect all cables from the front panel of the RX splitter and move them out of the way.
Using a T25 TORX driver, remove the two RX splitter mounting screws; one screw at each of
the end mounting tabs on the front of the module.
Carefully remove the RX splitter from the bottom of the XMI shelf.
Mount the replacement RX splitter to the bottom of the XMI shelf. Use the two RX splitter
mounting screws; one screw at each of the end mounting tabs on the front of the module.
Using a T25 TORX driver, tighten the two RX splitter mounting screws to 4.77 N-m (42 in-lb).
Reconnect all cables to the front panel of the RX splitter.
This completes the physical installation of the FRU. If optimization is to be performed at this
time, see Optimization Required following this table.
Optimization Required
Perform the following BTS Optimization/ATP procedures:
•
RSSI Test (FER Test is optional)
Refer to the 1X UBS Macro BTS Optimization/ATP manual for the optimization procedures.
68P09283A64-3
SEP 2007
11-5
FOA
RX Splitter
Chapter 11: RX Splitter Replacement Procedure
11-6
68P09283A64-3
FOA
SEP 2007
Chapter
12
RGPS Head Replacement Procedure
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68P09283A64-3
SEP 2007
12-1
FOA
RGPS (Remote GPS) Head
Chapter 12: RGPS Head Replacement Procedure
RGPS (Remote GPS) Head
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RGPS Head Description
The optional RGPS head is remotely located from the UBS Macro BTS frame. The RGPS head
is typically mounted outside on a mast/pole. (See Figure 1-18 RGPS Head Mounting Details
on page 1-50.)
The RGPS head contains a GPS Receiver (GPSR) and built-in GPS RF antenna.
The RGPS head 12–pin Deutsch type MMP connector is cabled to the SSI RGPS connector. This
connection allows the SSI to supply DC power to the RGPS head. In addition, control/data
signals are exchanged between the UBS Macro BTS frame and RGPS head via this connection.
The RGPS head successfully tracks and acquires GPS satellites. The RGPS head detects GPS
RF signals and extracts a 1 Pulse Per Second (1PPS) timing signal. This 1PPS signal is applied
to the DMI controller via the SSI connector. The DMI controller contains an internal Medium
Stability Oscillator (MSO) that is synchronized to the 1PPS timing signal and locked to the GPS
time base. If satellite tracking is lost or if the RGPS head fails, the MSO can maintain system
timing for up to 8 hours.
If the UBS Macro BTS frame is equipped with an optional Quartz High Stability Oscillator
(QHSO) that is mounted to the rear of the SSI, the DMI controller selects the QHSO as the
backup synchronization source instead of the MSO. The QHSO can maintain system timing
for up to 24 hours.
Motorola RGPS Heads
Currently there are two Motorola RGPS heads that may be used with UBS Macro BTS equipment
(see Figure 1-19 RGPS Head Equipment on page 1-51). These are as follows:
•
A later version Motorola RGPS head is typically installed at a new UBS Macro BTS site.
•
An earlier version Motorola RGPS head already installed at and existing Motorola equipped
BTS site that is being upgraded with UBS Macro BTS equipment.
The installed RGPS cabling supports operation of either version RGPS head. However, the later
version RGPS head requires that the cabling to the head be routed outside the RGPS mounting
mast/pole while the earlier version RGPS head requires that the cabling to the head be routed
through the RGPS mounting mast/pole.
12-2
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
RGPS (Remote GPS) Head
System Impact/Considerations
Performing this replacement procedure should not require BTS downtime or impact
call processing because of MSO or QHSO backup. However RGPS head downtime
will occur. And alarms will be reported.
A failed RGPS head should be replaced immediately after failure detection and
within the applicable MSO/QHSO backup time period (i.e., up to 8 hours MSO and
up to 24 hours QHSO).
After the replacement RGPS head is re-connected and powered up, it may take up to
30 minutes for the replacement RGPS head to successfully track and acquire satellites.
Table 12-1
FRU Replacement Conditions
FRU
RGPS head
Ref Designator
RGPS
What to Shut Down...
Nothing; FRU is hot swappable and BTS
system timing is backed up by either MSO
(for up to 8 hours) or QHSO (for up to 24
hours).
Required Items
Documents
•
1X UBS Macro BTS Optimization/ATP manual.
•
Adjustable wrench
Tools
68P09283A64-3
12-3
FOA
SEP 2007
RGPS (Remote GPS) Head
Chapter 12: RGPS Head Replacement Procedure
Replacement Unit
•
RGPS Head (Motorola model SLN6594), later version
•
RGPS Head (Motorola part number 0186012H04), earlier version
If you need to replace the mounting hardware and/or the cable assembly with the RGPS head,
contact your Motorola sales representative for the appropriate kits.
Prerequisite
Coordinate this repair task with the OMCR operator.
Before You Begin
Before you begin, record the pertinent information in the following table (see Table 12-2):
Table 12-2
Item Number Replacement List
Item
Number
BTS number
Failed RGPS Head number
Replacement RGPS Head
number
RGPS head Replacement Procedure
Perform the steps in Procedure 12-1to replace the RGPS Head.
Procedure 12-1 RGPS Head Replacement Procedure
AT THE BTS SITE
Notify the OMCR operator that you are starting the replacement procedure and that
associated alarm reports can be expected.
•
For removal of the earlier RGPS head (Motorola part number 0186012H04), go to step
step 3.
•
For removal of the later RGPS head (Motorola model SLN6594), go to step step 12.
Continued
12-4
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
RGPS (Remote GPS) Head
Procedure 12-1 RGPS Head Replacement Procedure (Continued)
Create slack in the RGPS cable so that 2 feet of cable can be extended out of the RGPS head
end of the mounting pipe/conduit.
Loosen the pipe/conduit mounting hardware until the pipe/conduit is free to be unscrewed
from the RGPS head.
To prevent twisting of cables, do not turn the RGPS head while holding the
pipe/conduit.
Grasp the RGPS head with one hand and the pipe/conduit with the other hand.
While holding the head still, unscrew the pipe/conduit from
the head and separate the head from the pipe/conduit.
Grasp the cable just below the head and pull about 16 inches of cable out of the pipe/conduit
until the mating cable connectors are exposed.
Separate the mating cable connectors to disconnect the RGPS head from the RGPS cable.
The UBS Macro BTS frame automatically switches over to the backup reference
source, QHSO/MSO, after disconnecting a working RGPS head. Alarm/event
messages are also triggered.
Connect the cable connector of the replacement RGPS head to the RGPS cable connector.
Secure the connection by tightening the spinning connector ﬂange.
After connecting the replacement head, the UBS Macro BTS frame automatically
switches over to the primary reference source, Remote GPS.
Feed the cable slack into the RGPS head end of the mounting pipe/conduit.
To prevent twisting of cables, do not turn the RGPS head while holding the
pipe/conduit.
Grasp the RGPS head with one hand and the pipe/conduit with the other hand.
Being careful not cross-thread the ﬁtting on the RGPS head, screw the pipe/conduit into the
head. Hand tighten only!
10
Tighten the pipe/conduit mounting hardware until the pipe/conduit is securely mounted.
Continued
68P09283A64-3
12-5
FOA
SEP 2007
RGPS (Remote GPS) Head
Chapter 12: RGPS Head Replacement Procedure
Procedure 12-1
RGPS Head Replacement Procedure (Continued)
11
Go to step step 16
12
Disconnect the RGPS cable from the RGPS head connector. It may be helpful to create some
slack in the RGPS cable.
The UBS Macro BTS frame automatically switches over to the backup reference
source, QHSO/MSO, after disconnecting a working RGPS head. Alarm/event
messages are also triggered.
13
Remove the RGPS head by grasping the head and unscrewing it from the mounting
pipe/conduit.
Turn the RGPS head Counter-Clockwise (CCW), as viewed from the top of the
head, to loosen/unscrew.
14
Screw the replacement RGPS head onto the mounting pipe/conduit. Securely tighten the
head.
15
Connect the RGPS cable connector to the replacement RGPS head connector. Secure the
connection by tightening the spinning connector ﬂange.
After connecting the replacement head, the UBS Macro BTS frame automatically
switches over to the primary reference source, Remote GPS.
16
After the replacement RGPS head is re-connected and powered up, it may take up
to 30 minutes for the replacement RGPS head to successfully track and acquire
satellites.
Notify the OMCR operator that you have completed the replacement procedure.
AT THE OMCR
17
Verify that old alarms are cleared and no new alarms are reported.
18
If optimization is to be performed at this time, see Optimization Required
following this table.
12-6
68P09283A64-3
FOA
SEP 2007
1X UBS Macro BTS FRU
RGPS (Remote GPS) Head
Optimization Required
Consult the 1X UBS Macro BTS Optimization/ATP manual for the following optimization/test
instructions:
•
Timing Initialization/Veriﬁcation
68P09283A64-3
12-7
FOA
SEP 2007
Standard Printing Instructions
Part Number
68P09283A64-3
Manual Title
1X UBS Macro BTS FRU
Date
SEP 2007
CSD/CND (US)
Binder
- 3 Slant D-ring binder - letter size 11.75in x 11.5in) white PVC.
- Capacity depends on size of document. (no larger than 3 in)
- Clear pockets on front and spine
Printing
- Cover / spine text overprinted onto Motorola cover stock.
- Body printed double sided onto white letter size (8.5in x 11in) 70lb.
Finishing
- Shrink wrap contents.
FOA
SEP 2007
Barcode
68P09283A64-3
-3
68P09283A64
SEP 2007
FOA

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Nokia Solutions and Networks T5GX1 UBS CDMA XMI Transceiver at 800 MHz User Manual Exhibit 122c

Nokia Solutions and Networks UBS CDMA XMI Transceiver at 800 MHz Exhibit 122c

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