E F Johnson 2425770 Vantage 700/800 MHz Portable Radio User Manual

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Document ID	1634247
Application ID	gxZ6NOHipHBe1cAaglZ7VA==
Document Description	battery information
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	417.36kB (5217048 bits)
Date Submitted	2012-02-09 00:00:00
Date Available	2012-02-10 00:00:00
Creation Date	1994-02-15 13:58:56
Producing Software	Acrobat Distiller 7.0.5 (Windows)
Document Lastmod	2012-02-08 17:44:06
Document Title	Users Manual
Document Creator	FrameMaker 7.0
Document Author:	Joan Taylor

E C T I O N
Battery, Accessory and Disassembly
Information
Section2
2.1
Battery Information
2.1.1
Battery Removal / Installation
To remove the battery from the radio for recharging or replacement, first turn the radio off.
Then press the release button (see Figure 2.1) and rotate the battery upward to the
approximate point shown and remove it from the radio.
Figure 2.1
Battery Removal
Battery Release
Button
NEEDS TO BE REPLACED
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Battery, Accessory and Disassembly Information
2.1.2
Preventing Loss of Encryption Keys during Battery Change
If Infinite Key Retention is not programmed, the radio must be connected to a constant
power source to preserve the encryption keys in memory. Storage capacitors maintain the
supply voltage (and these keys) for approximately 3.5 minutes to allow the battery to be
changed. Therefore, when changing the battery of a radio containing keys, make sure to
reattach another battery within 3.5 minutes.
2.1.3
Battery Specifications
Table 2.1 contains specifications for batteries. For current advertised specifications, refer
to the specification sheet available from your sales representative. Values are typical and
are subject to change without notice.
Table 2.1 Viking Portable Portable Radio Battery Specifications
Battery Type
Dimensions (HxWxD)
Weight
Approximate Life (5/5/90)
Ultra-High Capacity Lithium
Ion
6.5 x 2.3 x .78 inches
(165.1 x 58.42 x 19.8 mm)
8.1 oz. (60.66213 kg)
12 hours
2.1.4
Battery Charging
The following considerations apply to all rechargeable batteries:
• Be sure to carefully read the instructions for operation of the battery charger, and follow
all of them carefully.
• Do not charge the battery with radio power on.
• If batteries are not in service (i.e., in storage) be sure to recharge them at least every 12
months.
• Be sure, especially when using Nickel Metal-Hydride (NiMH) batteries, to put new
batteries (or batteries that have been inactive for a significant time) through at least
three full charge/discharge cycles initially. Otherwise the batteries may not provide the
full number of operating hours for which they are rated.
! CAUTION
2-2
Do not transmit in close proximity to the charger base. Do not expose the charger base to
high level RF signals while a battery is being charged because this may cause a charger
fuse to blow (especially in the UHF range). Radios programmed for SMARTNET/
SmartZone operation, for example, may affiliate while in the charger which causes them to
key automatically. Therefore, do not leave radio power on while charging.
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Battery, Accessory and Disassembly Information
2.1.4.1
Charging Li-Ion Batteries
The Li-Ion (Lithium-Ion) battery can be charged separately or while attached to the radio.
When it is charged while attached to the radio, radio power should be turned off.
Note
The Li-P battery can only be charged in an approved battery charger. Charging lithium
batteries in nickel only chargers can result in overcharging the batteries and can damage
the cells through swelling.
With radio power off, charge current begins at a set level and gradually decreases as the
battery is charged. When the charge current decreases to 100Ma, all charge current is
automatically turned off and the charger switches to Ready mode. This is indicated by a
green Ready indication. No trickle charge current is applied.
If radio power is left on, the initial charging process is as described above. However,
because the radio standby current is in excess of 100mA, the charge current never
decreases to the 100 mA charge cutoff threshold. The charger continues to charge until the
four-hour timeout is reached, then automatically switches to Ready mode. If the radio is
left with power on, the battery will slowly discharge. If the battery discharges to a set
voltage level (7.8V to 8.0V, depending upon battery type) the charger will automatically
enter recharge mode, and repeat the previously described recharge process.
In summary, if the Li-Ion battery is left in the radio and charged while the radio power is
left on, the following cycle s repeated: the radio charges (approximately four hours), then
switches to Ready mode (approximately two to three hours), then switches back to
charging to begin a new cycle.
2.1.5
! WARNING
Battery Care
Do not incinerate a battery pack because of the risk of explosion. Also, do not short circuit
the terminals because the battery pack and the object causing the short may become very
hot. Do not disassemble or modify a battery pack.
Proper battery care enhances the useful life of the battery. The battery should be recharged
as soon a practical after the low battery indication appears. Follow the charging
instructions in the manual included with the charger. When the battery fails to hold a
charge or provides only a very short operating time, it must be replaced with a new unit.
Specified battery life is approximately 10-to-12 hours of service before recharging is
required. This time assumes that 5% of the time is spent transmitting, 5% in the receive
unsquelched mode, and 90% in the receive squelched mode. The operating time may be
less if more time is spent in the transmit or unsquelched modes, or if the battery is not fully
charged or its capacity has deteriorated. Be sure to dispose of the nickel metal-hydride
(NiMH) battery pack in accordance with local waste regulations.
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Battery, Accessory and Disassembly Information
2.2
Belt Clip Installation
Remove the battery and slide the beltclip into the slot on the battery until it locks into place
(see Figure 2.2). To remove the beltclip, squeeze the tab on the end of the beltclip and
slide the beltclip out.
Figure 2.2
Belt Clip Installation
NEEDS TO BE REPLACED
Beltclip
Beltclip
Locking Tab
2.3
Accessory Installation
To connect an accessory such as a speaker-microphone to the radio, refer to Figure 2.3 and
proceed as follows:
1 Remove the dust cover over the accessory connector on the side of the radio. The most
effective way to do this is to insert a flat-blade screwdriver into the slot at the top of the
dust cover, and apply a gradual lift-and-twist motion.until the cover separates.
2 Insert the hook of the accessory connector into the slot on the side of the radio.
3 Hold the latch open, press the connector against the radio, and then release the latch to
lock the connector in place.
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Battery, Accessory and Disassembly Information
4 Install the included locking screw in the latch tab in the location shown.
Figure 2.3
Accessory Installation
Install Lock
Screw Here
Accessory Connector
Latch
NEEDS TO BE REPLACED
Hook
2.3.1
Option Select Lines
Opt Sel 1 (pin 3) and Opt Sel 2 (pin 7) of the UDC (accessory) connector indicate to the
control logic when an accessory is connected and what accessory is installed. These lines
function as follows:
Opt Sel 1 and 2 High (3.3V) - This is the normal operating condition in which no
accessory is connected. Both lines are pulled high (3.3V) by internal pull-up resistors.
Opt Sel 1 Low - A speaker-microphone or some other accessory is connected. Opt Sel 2
then functions as an external PTT line (low = PTT), and the radio PTT switch is also
functional. The internal speaker and microphone are disabled.
Opt Sel 1 High, Opt Sel 2 Low - The encryption keyloader is connected.
2.4
Radio Disassembly
Always perform disassembly in a static-free environment, while using ESD Grounding
! CAUTION
straps.
Viking Portable Radio Service Manual
Draft 2/8/12
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Battery, Accessory and Disassembly Information
2.4.1
Separating Front Cover and Chassis
1 Remove the antenna.
2 Insert a small flat-blade screwdriver or similar tool between the plastic front cover and
metal chassis as shown below. Carefully lift the chassis out of the cover with the
screwdriver blade. Raise it to approximately the point shown in the next illustration.
Front Cover
NEEDS TO BE REPLACED
Metal Chassis
3 Slide the chassis out of the top part of the front cover.
NEEDS TO BE REPLACED
Note
Before reassembling the front cover and chassis, make sure the UDC (accessory)
connector flex circuit is flat against the side of the front cover. If it is not, the RF Board
shield clip may catch and damage it.
4 When reassembling, examine the perimeter gasket. If it is damaged, replace with a new
gasket. Make sure the perimeter gasket is in place, and then use the screwdriver blade
again as a guide to prevent damage to the bottom part of the gasket as the chassis slides
back in place. Firmly press the chassis and the cover together until they snap in place.
2-6
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Battery, Accessory and Disassembly Information
2.4.2
Removing RF and Logic Boards From Chassis
Remove the Rf and Logic Boards as follows:
1 Separate the front cover and chassis as described in the preceding section. The RF and
Logic Boards are located inside the metal chassis as shown below.
NEEDS TO BE REPLACED
2 Remove the shields over the RF and Logic Boards. These shields insert in slots on one
side of the chassis and then clip to the other side of the chassis. These shields also hold
the boards in place.
3 Unplug the antenna cable from the RF Board using pliers or a similar tool at the
location shown below. Unlock the Logic Board flex circuit by sliding the tab on the
connector outward. The RF and Logic Boards can now be removed.
Unplug Ant
Jack Cable
Unlock Flex
Circuit of
Logic Board
RF Module
NEEDS TO BE REPLACED
! CAUTION When handling these boards, minimize bending of the flex circuit to prevent it from being
damaged.
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Draft 2/8/12
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Battery, Accessory and Disassembly Information
2.4.3
Removing UI (User Interface) Board
1 Separate the front cover and chassis as described in Section 2.4.1. The UI Board is
located inside the front cover as shown below.
MICROPHONE
UI Board
Unsolder
Wires
Remove
Screws
Unlock
Flex Circuits
NEEDS TO BE REPLACED
2 Unlock the three flex circuits shown above by sliding the tab on each connector
outward. Carefully slide the flex circuits out of the connectors, taking care to minimize
bending which could crack the traces.
3 Remove the two screws shown above. If required, also unsolder the two speaker wires.
4 Carefully lift the bottom end of the UI Board upward (guide the microphone out of its
cavity). Then slide the UI Board out of the radio.
5 When reinstalling the UI Board, the display assembly on the bottom of the board must
slide into the area above the keypad (see following illustration). If the UI Board does
not lie flat against the keypad after it is installed, the display is probably hanging up on
the keypad. Do not force it in place. Reorient the keypad and UI Board as required until
the display slides into place. Also make sure that the optic fiber bundle slides under the
boss on the switch assembly, and the microphone is properly positioned back in its
cavity.
NEEDS TO BE REPLACED
Keypad
Display Area
2.4.4
Removing Switch Assembly
6 Separate the front cover and chassis as described in Section 2.4.1. Then remove the UI
Board as described in the preceding section.
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Battery, Accessory and Disassembly Information
7 Pull the rubber knobs and plastic channel number ring off the shafts.
8 To remove the position indicator ring under the channel knob, turn the channel switch
so that the flat part of the shaft is toward one of the tangs (see below). Then insert
tweezers or similar tool under both tangs and push it inward to release the tangs from
the groove in the shaft.
NEEDS TO BE REPLACED
9 Remove the spanner nut on each shaft and slide the switch assembly out of the cover.
Viking Portable Radio Service Manual
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Battery, Accessory and Disassembly Information
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Viking Portable Radio Service Manual

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