T L Parker RDX-U2 Mobile Transmitter User Manual Portable manual

T L Parker Ltd Mobile Transmitter Portable manual

Portable manual

Digital XTS 3000

Portable Radios

Basic Service Manual

Motorola

8000 West Sunrise Boulevard

Fort Lauderdale, Florida 33322

68P81083C85-O

TM TM

Foreword

This manual covers all models of ASTRO™ Digital XTS 3000™ portable radios, unless otherwise speciﬁed. It includes all the

information necessary to maintain peak product performance and maximum working-time using the pass/fail service

approach. This basic level of service is typical of some local service centers, self-maintained customers, and some distributors.

Included in this manual are: radio speciﬁcations for the 800MHz frequency band; a general description of ASTRO Digital XTS

3000 models; recommended test equipment, service aids, and tools; radio alignment procedures; fundamental disassembly/

reassembly procedures; and general maintenance recommendations.

For details on the operation of the radio, or board- or component-level troubleshooting, refer to the applicable manuals

available separately. To help you with your selection, a list is provided in this manual, titled “Related Publications.”

Safety Information

In 1991 the Institute of Electrical and Electronics Engineers (IEEE), and in 1992 the American National Standards Institute

(ANSI), updated the 1982 ANSI Standard for safety levels with respect to human exposure to RF energy. Over 120 scientists,

engineers, and physicians from universities, government health agencies, and industry, after reviewing the available body of

research, developed this updated Standard. In March, 1993, the Federal Communications Commission (FCC) proposed the

adoption of this updated Standard.

Motorola subscribes to the same safety standard for the use of its products. Proper operation of this radio will result in user

exposure substantially below FCC recommended limits:

•

DO NOT

hold the radio with the antenna very close to, or touching, exposed parts of the body, especially

the face, ears, or eyes, while transmitting. Hold the radio in a vertical position with the microphone

two to three inches

away from the lips.

•

DO NOT

hold the transmit switch (PTT) on when not actually desiring to transmit.

•

DO NOT

allow children to play with any radio equipment containing a transmitter.

•

DO NOT

operate this equipment near electrical blasting caps or in an explosive atmosphere. Under certain conditions,

radios can interfere with blasting operations. When you are in the vicinity of construction work, look for, and observe,

signs cautioning against radio transmissions. If radio transmission is prohibited, you must not transmit until out of the

area. Furthermore, you must turn off your radio to prevent any accidental transmission.

•

DO NOT

replace or charge batteries in a hazardous atmosphere. Contact sparking may occur while installing or removing

batteries and cause an explosion.

•

Turn the radio off when removing or installing a battery.

Anyone intending to use a radio in a hazardous area is advised to become familiar with the subject of intrinsic safety and with

Section 70 of the National Fire Code, which is commonly referred to as Article 500 of the National Electric Code. Use of

anything but factory supplied components may affect the approval and safety of the radio. Likewise, it is advised that servicing

should be performed only by qualiﬁed personnel who adhere to the following Factory Mutual (FM) required warning:

Modiﬁcation of FM approved intrinsically safe radios will negate Factory Mutual Research

Corporation (FMRC) approval.

Airbag Warning Statement

VEHICLES EQUIPPED WITH AIR BAGS

An air bag inﬂates with great force. DO NOT place objects, including communication equipment, in the area over

the air bag or in the air bag deployment area. If the communication equipment is improperly installed and the air

bag inﬂates, this could cause serious injury.

•

Installation of vehicle communication equipment should be performed by a professional installer/technician qualiﬁed in

the requirements for such installations. An air bag’s size, shape and deployment area can vary by vehicle make, model and

front compartment conﬁguration (for example, bench seat vs. bucket seats).

•

Contact the vehicle manufacturer’s corporate headquarters, if necessary, for speciﬁc air bag information for the vehicle

make, model and front compartment conﬁguration involved in your communication equipment installation.

Manual Revisions

Changes which occur after this manual is printed are described in “FMRs.” These FMRs provide complete information on

changes including pertinent parts listing data.

W A R N I N G

Table of Contents

Foreword

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .inside front cover

List of Figures

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

List of Tables

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

Related Publications

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

Portable Radio Model Numbering System

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii

SPECIFICATIONS FOR 800MHz RADIOS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv

Glossary

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

1 - Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Notations Used in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Radio Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

FLASHport. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2 - Basic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Introduction to This Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Preventive Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Handling Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 - Recommended Test Equipment and Service Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Service Aids. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Field Programming Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4 - Performance Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Introduction to This Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5 - Radio Alignment Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Introduction to This Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Reference Oscillator Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Transmit Power Alignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Transmit Deviation Balance (Compensation) Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Transmit Deviation Limit Alignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6 - Basic Removal/Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Introduction to This Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Belt Clip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Universal Connector Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Frequency Knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Volume Knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

, Motorola, ASTRO, XTS 3000, Private-Line, and Digital Private-Line are trademarks of Motorola, Inc.

® by Motorola Inc., Radio Products Group

8000 W. Sunrise Blvd., Ft. Lauderdale, FL 33322

Printed in U.S.A. 6/96

Basic Service Manual

68P81083C85-O

7 - Basic Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

General Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Analog Mode of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

ASTRO Mode of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

RF Board Basic Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Controller Board Basic Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Vocoder Board Basic Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

8 - Radio-Level Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Introduction to This Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Power-Up Error Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Operational Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Replacement Parts Ordering

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . inside back cover

List of Figures

Figure 1. Radio Alignment Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 2. RSS Service Menu Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 3. Softpot Concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 4. Reference Oscillator Alignment Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 5. Transmit Power Alignment Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 6. Transmit Deviation Balance (Compensation) Alignment Screen . . . . . . . . . . . . . . . . . 17

Figure 7. Transmit Deviation Limit Alignment Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 8. Partial Exploded View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

List of Tables

Table 1. ASTRO XTS 3000 Basic Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Table 2. Recommended Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Table 3. Service Aids. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 4. Initial Equipment Control Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 5. Test Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 6. Test Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 7. Receiver Performance Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 8. Transmitter Performance Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 9. Reference Oscillator Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 10. Transmit Power Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 11. Transmit Deviation Limit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table 12. Partial Exploded View Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 13. Local Oscillator and First IF Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Table 14. Power-Up Error Code Displays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Table 15. Operational Error Code Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Table 16. Receiver Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Table 17. Transmitter Troubleshooting Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Table 18. Encryption Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Related Publications

ASTRO Digital XTS 3000 Basic Model User’s Guide . . . . . . . . . . . . . . . . . . . . . . . . . .68P81083C70

ASTRO Digital XTS 3000 Full-Featured Model User’s Guide . . . . . . . . . . . . . . . . . . . .68P81083C75

ASTRO Digital XTS 3000 Detailed Service Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . .68P81083C90

Computer Software Copyrights

The Motorola products described in this manual may include copyrighted Motorola computer programs stored in

semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola certain

exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form

the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the

Motorola products described in this manual may not be copied or reproduced in any manner without the express

written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant either

directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of

Motorola, except for the normal non-exclusive royalty free license to use that arises by operation of law in the sale of

a product.

iii

Portable Radio

Model Numbering

System

Position 1 - Type of Unit

D = Dash-Mounted Mobile Radio

M = Motorcycle Mobile Radio

T =Trunk-Mounted Mobile Radio

Positions 2 & 3 - Model Series

Position 4 - Frequency Band

Less than 29.7MHz

29.7 to 35.99MHz

36 to 41.99MHz

42 to 50MHz

66 to 80MHz

74 to 90MHz

Product Specific

136 to 162MHz

146 to 178MHz

174 to 210MHz

190 to 235MHz

336 to 410MHz

403 to 437MHz

438 to 482MHz

470 to 520MHz

Product Specific

806 to 870MHz

825 to 870MHz

896 to 941MHz

1.0 to 1.6GHz

1.5 to 2.0GHz

Values given represent range only; they are

not absolute.

Position 5 - Power Level

0 to 0.7 Watts

0.7 to 0.9 Watts

1.0 to 3.9 Watts

4.0 to 5.0 Watts

5.1 to 6.0 Watts

6.1 to 10 Watts

Position 6 - Physical Packages

RF Modem Operation

Receiver Only

Standard Control; No Display

Standard Control; With Display

Limited Keypad; No Display

Limited Keypad; With Display

Full Keypad; No Display

Full Keypad; With Display

Limited Controls; No Display

Limited Controls; Basic Display

Limited Controls; Limited Display

Rotary Controls; Standard Display

Enhanced Controls; Enhanced Display

Low Profile; No Display

Low Profile; Basic Display

Low Profile; Basic Display, Full Keypad

Position 7 - Channel Spacing

1 = 5kHz

2 = 6.25kHz

3 = 10kHz

4 = 12.5kHz

5 = 15kHz

6 = 20/25kHz

7 = 30kHz

9 = Variable/Programmable

Typical Model Number:

Position:

Position 8 - Primary Operation

Conventinal/Simplex

Conventional/Duplex

Trunked Twin Type

Dual Mode Trunked

Dual Mode Trunked/Duplex

Trunked Type I

Trunked Type II

FDMA* Digital Dual Mode

TDMA** Digital Dual Mode

Single Sideband

Global Positioning Satellite Capable

Amplitude Companded Sideband (ACSB)

Programmable

* FDMA = Frequency Division Multiple Access

** TDMA = Time Division Multiple Access

Position 9 - Primary System Type

Conventional

Privacy Plus®

Clear SMARTNET™

Advanced Conventional Stat-Alert™

Enhanced Privacy Plus®

Nauganet 888 Series

Japan Specialized Mobile Radio (JSMR)

Multi-Channel Access (MCA)

CoveragePLUS™

MPT1327* - Public

MPT1327* - Private

Radiocom

Tone Signalling

Binary Signalling

Phonenet®

Programmable

Secure Conventional

Secure SMARTNET™

* MPT = Ministry of Posts and Telecommunications

Position 10 - Feature Level

1 = Basic

2 = Limited Package

3 = Limited Plus

4 = Intermediate

5 = Standard Package

6 = Standard Plus

7 = Expanded Package

8 = Expanded Plus

9 = Full Feature/

Programmable

Position 11 - Version

Version Letter (Alpha) - Major Change

Position 12 - 

Unique Model Variations

C = Cenelec

N = Standard Package

Positions 13 - 16

“SP” Model Suffix

1 23 4 5 6 7 8 9 10 11 1213141516

T04S LF 9 P W 7 A N S P 0 1

04 = ASTRO

10.1 to 15 Watts

16 to 25 Watts

26 to 35 Watts

36 to 60 Watts

= 61 to 110 Watts

H = Hand-Held Portable

H 0 9 U C F 9 P W 7 A N S P 0 1

09 = XTS 3000

SPECIFICATIONS FOR 800 MHz RADIOS

All speciﬁcations are per Electronic Industries Association (EIA) 316B unless otherwise noted

GENERAL RECEIVER TRANSMITTER

FCC Designation:

AZ489FT5774

Temperature Range:

Operating:

–30

C to +60

Storage:

–40

C to +85

Power Supply:

Nickel-Cadmium Battery (NiCd)

Nickel-Metal-Hydride Battery (NiMH)

Battery Voltage:

Nominal:

7.5 Volts

Range:

6 to 9 Volts

Recommended Battery:

Ultra-HIgh Capacity NiMH:

H335AC

Ultra–High Capacity NiCd FM:

H223AX*

NiMH FM IS:

Q393AB

Optional FM (Factory Mutual) Battery:

* FM Intrinsically Safe: Class I, II, III, Division 1,

Groups D, F, and G

Dimensions (H x W x D)

Note: 2.44" = width at PTT; 2.34" = width at

bottom; 1.83" = depth at speaker; 0.97" = depth

at keypad

Less Battery:

6.58" x 2.44" x 1.83"/6.58" x 2.34" x 0.97"

(167.13mm x 61.90mm x 46.42mm/

167.13mm x 59.49mm x 24.56mm)

With Ultra-High Capacity NiMH Battery:

6.58" x 2.44" x 1.83"/6.58" x 2.34" x1.65"

(167.13mm x 61.90mm x 46.42mm/

167.13mm x 59.49mm x 41.97mm)

With Ultra-High Capacity NiCd Battery:

6.58" x 2.44" x 1.83"/6.58" x 2.34" x1.65"

(167.13mm x 61.90mm x 46.42mm/

167.13mm x 59.49mm x 41.97mm)

With NiMH FM IS Battery:

6.58" x 2.44" x 1.83"/6.58" x 2.34" x1.65"

(167.13mm x 61.90mm x 46.42mm/

167.13mm x 59.49mm x 41.97mm)

Weight: (w/Helical Antenna)

Less Battery:

14.10oz. (383gm)

With Ultra-High Cap. NiMH:

23.45oz. (644gm)

With Ultra-High Cap. NiCd:

25.19oz. (693gm)

With NiMH FM IS:

23.45oz. (644gm)

Frequency Range:

851–870MHz

Bandwidth:

19MHz

Quieting Sensitivity (20dBQ):

0.5

V Max.

Usable Sensitivity

(12dB SINAD):

0.35

V Max.

Intermodulation:

–70dB

Selectivity

(25kHz Adjacent Channel):

–70dB

Spurious Rejection:

–70dB

Frequency Stability

(–30+60

C; 25

C reference):

.00015%

Rated Audio:

500mW

Distortion (At Rated Audio):

3% Typical

Channel Spacing:

25kHz

RF Power:

3 Watts

Frequency Range:

806–825MHz

851–870MHz

Frequency Stability

(–30 to +60

C; 25

C ref.):

.00015%

Emission (Conducted and Radiated):

–46dBw

FM Hum and Noise

(Companion Receiver):

–40dB

Distortion:

3% Typical

Modulation Limiting:

5kHz

(821-824MHz):

4kHz

Emissions Designators:

20K0F1E, 16K0F3E, 15K0F2D,

15K0F1D, and 8K10F1E

Specifications subject to change without notice

GLOSSARY

A/D

nalog to

igital converter; converts an instantaneous dc voltage level to a

corresponding digital value.

ABACUS IC

Custom integrated circuit providing a digital receiver IF backend.

ADSIC ABACUS/DSP Support IC; custom integrated circuit providing peripheral

functions for the DSP.

ALC Automatic Level Control; a circuit in the transmit RF path that controls RF

power ampliﬁer output, provides leveling over frequency and voltage, and

protects against high VSWR.

D/A Digital to Analog converter; converts a digital value to a corresponding dc

voltage value.

DTMF Dual Tone Multi-Frequency

DPL Digital Private-Line™

DSP Digital Signal Processor; microcontroller speciﬁcally tailored for signal

processing computations. In this case refers speciﬁcally to Motorola

DSP56001.

Firmware Software or a software/hardware combination of computer programs and data,

with a ﬁxed logic conﬁguration stored in a read-only memory; information

can not be altered or reprogrammed.

FGU Frequency Generation Unit

FLASHport™ A Motorola term that describes the ability of a radio to change memory. Every

FLASHport radio contains a FLASHport EEPROM memory chip that can be

software written and rewritten to, again and again.

Host Motorola HC11F1 microcontrol unit U204 (see MCU).

Host Port Parallel memory mapped interface consisting of eight registers in the

DSP56001.

IC Integrated Circuit

IMBE A sub-band, voice encoding algorithm used in ASTRO digital voice.

ISW Inbound Signalling Word; data transmitted on the control channel from a

subscriber unit to the central control unit.

LSH Low Speed Handshake; 150 baud digital data sent to the radio during trunked

operation while receiving audio.

MCU MicroControl Unit

MDC Motorola Digital Communications

MISO Master In Slave Out; used by the slave device to send data to the master device.

MOSI Master Out Slave In; used by the master device to send data to the slave device.

OMPAC Over-Molded Pad-Array Carrier; a Motorola custom IC package, distinguished

by the presence of solder balls on the bottom pads.

Open Architecture A controller conﬁguration that utilizes a microprocessor with extended ROM,

RAM, and EEPROM.

OSW Outbound Signalling Word; data transmitted on the control channel from the

central controller to the subscriber unit.

PC Board Printed Circuit board

PL Private-Line® tone squelch; a continuous sub-audible tone that is transmitted

along with the carrier.

PLL Phase-Locked Loop; a circuit in which an oscillator is kept in phase with a

reference, usually after passing through a frequency divider.

PTT Push-To-Talk; the switch located on the left side of the radio which, when

pressed, causes the radio to transmit.

Registers Short-term data-storage circuits within the microcontrol unit or

programmable logic IC.

Repeater Remote transmit/receive facility that re-transmits received signals in order to

improve communications coverage.

RESET Reset line; an input to the microcontroller that restarts execution.

RF PA Radio Frequency Power Ampliﬁer

RSS Radio Service Software

RPT/TA RePeaTer/Talk-Around

RX DATA Recovered digital data line.

Signal Qualiﬁer

Mode An operating mode whereby the radio is muted but still continues to analyze

receive data to determine RX signal type.

SCI IN Serial Communication Interface INput line

SLIC Support-Logic IC; a custom gate array used to provide I/O and memory

expansion for the microcontroller.

Softpot Software potentiometer; a computer-adjustable electronic attenuator.

Software Computer programs, procedures, rules, documentation, and data pertaining

to the operation of a system.

SPI Serial Peripheral Interface; how the microcontroller communicates to

modules and ICs through the CLOCK and DATA lines.

vii

Squelch Muting of audio circuits when received signal levels fall below a pre-

determined value.

SRAM Static-RAM chip used for volatile, program/data memory.

SSI Synchronous Serial Interface on the DSP56001 consisting of six signals and

used for an RX and TX modulated data interface to the ADSIC.

Standby Mode An operating mode whereby the radio is muted but still continues to monitor

data.

System Central

Controllers Main control unit of the trunked dispatch system; handles ISW and OSW

messages to and from subscriber units (see ISW and OSW).

System Select The act of selecting the desired operating system with the system-select switch

(also, the name given to this switch).

TOT Time-Out Timer; a timer that limits the length of a transmission.

TSOP Thin Small-Outline Package

UART Universal Asynchronous Receiver Transmitter.

µCMicrocontrol unit (see MCU).

VCO Voltage-Controlled Oscillator; an oscillator whereby the frequency of

oscillation can be varied by changing a control voltage.

VCOB IC Voltage-Controlled Oscillator Buffer IC

Vocoder VOice enCODER; the DSP-based system for digitally processing the analog

signals, includes the capabilities of performing voice compression algorithms

or voice encoding.

VOCON VOcoder/CONtroller board

VSELP Vector Sum Excited Linear Predictive coding; a voice encoding technique

used in ASTRO digital voice.

VSWR Voltage Standing Wave Ratio

viii

Notes

Introduction 1

General This manual covers information needed for level one troubleshooting. Level

one troubleshooting consists of radio programming, radio alignment, knobs

replacement, and installation and removal of antenna, belt clip, battery, and

universal connector cover. This will be the only level of service allowed for the

service centers, self-maintained customers, and distributors for the ﬁrst six

months of the life of this product.

Included in this manual are radio speciﬁcations for the 800MHz frequency

band, a general description of XTS 3000 models, recommended test

equipment, service aids, radio alignment procedures, general maintenance

recommendations, and procedures for basic assembly and disassembly.

Notations Used

in This Manual Throughout the text in this publication, you will notice the use of warnings,

cautions, and notes. These notations are used to emphasize that safety hazards

exist, and care must be taken and observed.

NOTE: An operational procedure, practice, or

condition, etc., which is essential to

emphasize.

CAUTION indicates a potentially hazardous

situation which, if not avoided, may result in

equipment damage.

C a u t i o n

WARNING indicates a potentially hazardous

situation which, if not avoided, could result

in death or injury.

W A R N I N G

DANGER indicates an imminently

hazardous situation which, if not

avoided, will result in death or injury.

D A N G E R

Radio

Description The ASTRO Digital XTS 3000 radios are among the most sophisticated two-

way radios available. The radio is presently available in the 800MHz band;

radios in the UHF and VHF bands will be available by the end of 1996.

One of the newest in a long line of quality Motorola products, the ASTRO

Digital XTS 3000 radio provides improved voice quality across more coverage

area. The digital process called “embedded signalling” intermixes system

signalling information with digital voice, resulting in improved system

reliability and the capability of supporting a multitude of advanced features.

Such features add up to better, more cost-effective two-way radio

communications.

ASTRO Digital XTS 3000 radios are available in two basic models. Table 1

provides a description of their basic features.

FLASHport The ASTRO Digital XTS 3000 radio utilizes Motorola’s revolutionary

FLASHport technology. FLASHport makes it possible to add software that

drives the radio’s capabilities both at the time of purchase and later on.

Previously, changing a radio’s features and capabilities meant signiﬁcant

modiﬁcations, or buying a new radio. But now, similar to how a computer can

be loaded with different software, the radio’s features and capabilities can be

upgraded with FLASHport software.

Table 1 ASTRO XTS 3000 Basic Features

Feature Basic Model Full-Featured Model

Display None LCD

4 lines/

12 characters per line

Keypad None 3 x 6 button

Channel Capability 48 255

Dialing from Prestored List No Yes

Programmable Softkeys No Yes

Basic Maintenance 2

Introduction

to This Section This section of the manual describes preventive maintenance and handling

precautions. Each of these topics provides information vital to the successful

operation and maintenance of your radio.

Preventive

Maintenance The ASTRO Digital XTS 3000 radios do not require a scheduled preventive

maintenance program; however, periodic visual inspection and cleaning is

recommended.

Inspection Check that the external surfaces of the radio are clean, and that all external

controls and switches are functional. A detailed inspection of the interior

electronic circuitry is not needed.

Cleaning The following procedures describe the recommended cleaning agents and the

methods to be used when cleaning the external surfaces of the radio. External

surfaces include the housing assembly and battery case. These surfaces should

be cleaned whenever a periodic visual inspection reveals the presence of

smudges, grease, and/or grime.

The only recommended agent for cleaning the external radio surfaces is a 0.5%

solution of a mild dishwashing detergent, such as JOY®, in water.

Cleaning External

Plastic Surfaces (The detergent-water solution should be applied sparingly with a stiff, non-

metallic, short-bristled brush to work all loose dirt away from the radio. A soft,

absorbent, lintless cloth or tissue should be used to remove the solution and

dry the radio. Make sure that no water remains entrapped near the connectors,

cracks, or crevices.

The effects of certain chemicals and their vapors can

have harmful results on certain plastics. Aerosol

sprays, tuner cleaners, and other chemicals should

be avoided.

C a u t i o n

Handling

Precautions Complementary metal-oxide semiconductor (CMOS) devices, and other high-

technology devices, are used in this family of radios. While the attributes of

these devices are many, their characteristics make them susceptible to damage

by electrostatic discharge (ESD) or high-voltage charges. Damage can be latent,

resulting in failures occurring weeks or months later. Therefore, special

precautions must be taken to prevent device damage during disassembly,

troubleshooting, and repair. Handling precautions are mandatory for this

radio, and are especially important in low-humidity conditions.

At this time, troubleshooting and repair of the radio will not be supported by

the ﬁeld or self-maintained customer. DO NOT attempt to disassemble the

radio.

Recommended Test

Equipment and 3

Service Aids

Recommended

Test

Equipment

The list of equipment contained in Table 2 includes all of the standard test

equipment required for servicing two-way portable radios, as well as several

unique items designed speciﬁcally for servicing this family of radios. The

“Characteristics” column is included so that equivalent equipment may be

substituted; however, when no information is provided in this column, the

speciﬁc Motorola model listed is either a unique item or no substitution is

recommended.

Service Aids Refer to Table 3, “Service Aids,” for a listing and description of the service aids

designed speciﬁcally for servicing this family of radios. These kits and/or parts

are available from the Motorola Parts Division ofﬁces listed in the

“Replacement Parts Ordering” section located on the inside back cover of this

manual. While all of these items are available from Motorola, most are

standard shop equipment items, and any equivalent item capable of the same

performance may be substituted for the item listed.

Table 2 Recommended Test Equipment

Motorola

Model Number Description Characteristics Application

R2670 or R2600 System Analyzer This monitor will substitute

for items with an asterisk (*). Frequency/deviation meter and

signal generator for wide-range

troubleshooting and alignment.

R1049A* Digital Multimeter Recommended for ac/dc voltage

and current measurements

R1150C* Code Synthesizer Injection of audio and digital

signalling codes

S1053D*

SKN6008A*

SKN6001A*

AC Voltmeter

Power Cable for Meter

Test Leads for Meter

1mV to 300V, 10-Megohm

input impedance Audio voltage measurements

R1094A Dual-Trace Oscillo-

scope 20MHz bandwidth 5mV to

5V/division Waveform measurements

S1350C*

ST1213B (VHF)*

ST1223B (UHF)*

Wattmeter

Plug-In Element

RF Dummy Load

50-ohm, ±5% accuracy

10 watts, maximum

0-1000MHz, 300W

Transmitter power output

measurements

R1065 Load Resistor 10-watt Broadband For use with wattmeter

S1339A RF Millivolt Meter 100µV to 3V RF RF-level measurements

R1013A* SINAD Meter Receiver sensitivity measurements

S1347D or S1348D

(programmable) DC Power Supply 0-20Vdc, 0-5 Amps

current limited Bench supply for 7.5Vdc

Field

Programming

Equipment

This family of radios can be aligned and programmed in the ﬁeld. This requires

speciﬁc equipment and special instructions. Refer to the applicable “Radio

Service Software User's Guide” for complete ﬁeld programming information.

Table 3 Service Aids

Motorola Part

Number Description Application

RKN-4035D RIB/Radio/Test Set Cable Connects radio to RTX-4005B Test Box and RIB.

REX-4424 Battery Eliminator Interconnects radio to power supply.

RLN-4460A, or

RTX-4005B, or both

RTX-4005A and

RPX-4665A

Portable Test Set Enables connection to the universal connector.

Allows switching for radio testing.

Field Modiﬁcation Kit

RLN-1015A or

RLN-4008B

Radio Interface Box Enables communications between the radio and the

computer's serial communications adapter.

01-80357A57 Wall-Mounted Power Supply Used to supply power to the RIB (120 Vac).

01-80358A56 Wall-Mounted Power Supply Used to supply power to the RIB (220 Vac).

30-80369B71 or

30-80369B72 Computer Interface Cable Use B72 for the IBM PC AT. All other IBM models use

B71. Connects the computer's serial communications

adaptor to the RIB.

RVN-4100F Radio Service Software Software on 3-1/2 in. and 5-1/4 in. ﬂoppy disks.

58-80348B33 SMA to BNC Adaptor Adapts radio’s antenna port to BNC cabling of test

equipment.

Performance Checks 4

Introduction

to This Section This section covers performance checks used to verify the radio meets

published speciﬁcations. The recommended test equipment listed in the

previous section approaches the accuracy of the manufacturing equipment,

with a few exceptions. Accuracy of the equipment must be maintained in

compliance with the manufacturer’s recommended calibration schedule.

Setup Supply voltage can be connected from the battery eliminator. The equipment

required for alignment procedures is connected as shown in the “Radio

Alignment Test Setup” diagram (page 13, Figure 1).

Initial equipment control settings should be as indicated in the following

table, and should hold for all alignment procedures except as noted in Table 4.

Test Mode

RF Test Mode When the ASTRO Digital XTS 3000 radio is operating in its normal

environment, the radio's microcomputer controls the RF channel selection,

transmitter key-up, and receiver muting. However, when the unit is on the

bench for testing, alignment, or repair, it is removed from its normal

environment. It cannot receive commands from its system and, therefore, the

internal microcomputer will not key the transmitter nor unmute the receiver.

This prevents the use of normal tune-up procedures. To solve this problem a

special routine, called TEST MODE or “air test,” has been incorporated in the

radio.

Table 4 Initial Equipment Control Settings

System Analyzer Test Set Power Supply

Monitor Mode: Pwr Mon Spkr Set: A Voltage: 7.5Vdc

RF Attn: –70dB Spkr/Load: Speaker DC On/Standby: Standby

AM, CW, FM: FM PTT: OFF (center) Volt Range: 10Vdc

O'scope Source: Mod

O'scope Horiz: 10mSec/Div

O'scope Vert: 2.5kHz/Div

O'scope Trig: Auto

Monitor Image: Hi

Monitor BW: Nar

Monitor Squelch: Mid CW

Monitor Vol: 1/4 CW

Current: 2.5Amps

To enter the test mode:

1. Turn the radio on and adjust the volume for a comfortable listening level.

The volume level remains constant once in the test mode.

2. Within 10 seconds after the “ ” is complete, press Side Button 3

ﬁve times in succession.

3. After “ ” appears, press the Top Programmable Button (normally

programmed as the emergency button) once. “ ” appears, indicating:

test frequency 1, carrier squelch mode.

4. Each additional press of Side Button 3 will advance to the next test

channel. (Refer to Table 5.)

5. Pressing Side Button 2 will scroll through and access test environments as

shown in Table 6.

NOTE: Transmit into a load when keying a radio

under test.

* All deviation values are based on deviation tuning of this mode.

Table 5 Test Frequencies

Test Channel 800MHz

TX #1 806.0125

RX #1 851.0625

TX #2 815.0125

RX #2 860.0625

TX #3 824.9875

RX #3 869.9375

TX #4 851.0125

RX #4 851.0625

TX #5 860.0125

RX #5 860.0625

TX #6 869.9875

RX #6 869.9375

TX #7 None

RX #7 None

Table 6 Test Environments

Display Description Function

CSQ Carrier Squelch RX: unsquelch if carrier detected

TX: mic audio

TPL Tone Private-

Line RX: unsquelch if carrier and tone (192.8 Hz) detected

TX: mic audio + tone (192.8 Hz)

AST ASTRO RX: none

TX: 1200Hz tone *

Control Top

and Keypad

Test Mode

To check the display, buttons, and switches, perform the following tests:

1. Turn the radio on and adjust the volume for a comfortable listening level.

The volume level remains constant once in the test mode.

2. Within 10 seconds after the “ ” is complete, press Side Button 3

ﬁve times in succession.

3. After “ ” appears on the display, press Side Button 1 once, “

” appears on the display.

4. Next, press and hold the Top Programmable Button; all segments on the

display will light, and the LED on the control top will illuminate a red

color.

5. Release the Top Programmable Button; “ ” appears, which indicates

that the Top Programmable Button is in the open condition.

6. Press the Top Programmable Button again; “ ” appears, which

indicates that the Top Programmable Button is in the closed condition.

7. Rotate the Mode/Zone Selector Switch; “ ” through “ ” appears,

which indicates that the selector switch is in mode/zone position 1

through 15.

8. Rotate the Two-Position (A/B) Switch; “ ” and “ ” appear.

9. Rotate the Three-Position Programmable Switch; “ ,”

“,” and “ ” appear.

10.Rotate the Volume Control; “ ” through “ ” appear.

11.Press Side Button 1; “ ” appears; release, “ ” appears.

12.Press Side Button 2; “ ”appears; release, “ ” appears.

13.Press Side Button 3; “ ”appears; release, “ ” appears.

14.Press the PTT Switch; “ ” appears; release, “ ” appears.

15.Keypad Checks:

-Press 0, “ ” appears; release, “ ” appears.

-Press 1, “ ” appears; release, “ ” appears.

-Press 2, “ ” appears; release, “ ” appears.

-Press 3, “ ” appears; release, “ ” appears.

-Press 4, “ ” appears; release, “ ” appears.

-Press 5, “ ” appears; release, “ ” appears.

-Press 6, “ ” appears; release, “ ” appears.

-Press 7, “ ” appears; release, “ ” appears.

-Press 8, “ ” appears; release, “ ” appears.

-Press 9, “ ” appears; release, “ ” appears.

-Press *, “ ” appears; release, “ ” appears.

-Press #, “ ” appears; release, “ ” appears.

-Press <, “ ” appears; release, “ ” appears.

-Press O, “ ” appears; release, “ ” appears.

-Press >, “ ” appears; release, “ ” appears.

-Press the left-hand M key on the top row of keys, “ ” appears;

release, “ ” appears.

-Press the center N key, “ ” appears; release, “ ” appears.

-Press the right-hand M key, “ ” appears; release,

“ ” appears.

Table 7 Receiver Performance Checks

Test Name System Analyzer Radio Test Set Comments

Reference

Frequency Mode: PWR MON 4th

channel test frequency❖

Monitor: Frequency error.

Input at RF In/Out

TEST MODE,

4 CSQ output

at antenna

PTT to continuous

(during the

performance check)

Frequency error to

be ≤ ±1.2kHz

Rated Audio Mode: GEN

Output level: 1.0mV RF 4th

channel test frequency❖

Mod: 1kHz tone at 3kHz

deviation

Monitor: DVM: ac Volts

TEST MODE,

4 CSQ PTT to OFF (center);

meter selector to Audio

Set volume control

to 3.74Vrms

Distortion As above, except to

distortion As above As above Distortion < 3.0%

Sensitivity

(SINAD) As above, except SINAD;

lower the RF level for 12dB

SINAD

As above PTT to OFF (center) RF input to be <

0.35µV

Noise Squelch

Threshold (only

radios with

conventional

system need to

be tested)

RF level set to 1mV RF As above PTT to OFF (center);

meter selection to

Audio PA; spkr/load to

speaker

Set volume control

to 3.74Vrms

As above, except change

frequency to a

conventional system. Raise

RF level from zero until

radio unsquelches.

Out of TEST

MODE; select

a conventional

system

As above Unsquelch to

occur at < 0.25µV.

Preferred SINAD =

8-10dB

❖ See Table 6

Table 8 Transmitter Performance Checks

Test Name System Analyzer Radio Test Set Comments

Reference

Frequency Mode: PWR MON 4th

channel test frequency❖

Monitor: Frequency

error. Input at RF In/Out

TEST MODE,

4 CSQ PTT to continuous

(during the

performance check).

Frequency error to be ≤

±1.2kHz.

Power RF As above As above,

4 CSQ As above Refer to Maintenance

Speciﬁcations page in

front of manual.

Voice

Modulation Mode: PWR MON 4th

channel test frequency❖

atten to –70, input to RF

In/Out.

Monitor: DVM, ac Volts.

Set 1kHz Mod Out level

for 0.025Vrms at test set,

80mVrms at ac/dc test

set jack

As above,

4 CSQ As above, meter

selector to mic Deviation: 800MHz: ≥

3.6kHz but ≤ 5.0kHz

Voice

Modulation

(internal)

Mode: PWR MON 4th

channel test frequency❖

atten to –70, input to RF

In/Out

TEST MODE,

4 CSQ, output

at antenna

Remove modulation

input Press PTT switch on radio.

Say “four” loudly into the

radio mic. Measure

deviation: 800MHz: ≥

3.8kHz but ≤ 5.0kHz

PL Modu-

lation (radios

with conven-

tional, clear

mode, coded

squelch oper-

ation only)

Change frequency to a

conventional transmit

frequency; BW to narrow

Conventional

coded

squelch

personality

(clear mode

operation) 4

TPL

As above Deviation: 800MHz: ≥

500Hz but ≤ 1000Hz

Talkaround

Modulation

(radios with

conventional,

clear mode,

talk-around

operation

only)

Change frequency to

conventional talk-

around frequency.

Mode: PWR MON

deviation, attenuation to

–70, input to RF In/Out.

Monitor: DVM, ac volts

Set 1kHz Mod Out level

for 25mVrms at test set.

Conventional

talkaround

personality

(clear mode

operation)

1 CSQ

As above Deviation: 800MHz: ≥

3.8kHz but ≤ 5.0kHz

Talkaround

Modulation

(radios with

conventional,

secure mode,

talkaround

operation

only) (**)

Change frequency to

conventional talk-

around frequency.

Mode: PWR MON

deviation, attenuation to

–70, input to RF In/Out.

Monitor: DVM, ac volts

Mod: 1kHz out level

for25mVrms at test set.

Conventional

talkaround

personality

(secure mode

operation).

Load key into

radio 1 sec.

As above Deviation: 800MHz: ≥

3.6kHz but ≤ 4.4kHz

* 800MHz radios only

** The secure mode, talkaround modulation test is only required for trac mode radios which do not have clear mode

talkaround capability.

❖See Table 6

Notes

Radio Alignment

Procedures 5

Introduction

to This Section This section describes both receiver and transmitter radio alignment

procedures.

General An IBM personal computer (PC) and radio service software (RSS) are required

to align the radio. Refer to the applicable RSS manual for installation and setup

procedures for the software. To perform the alignment procedures, the radio

must be connected to the PC, radio interface box (RIB), and a universal test set

as shown in Figure 1.

Figure 1 Radio Alignment Test Setup

All service and tuning procedures are performed from the SERVICE menu,

which is selected by pressing B from the MAIN MENU. Figure 2 illustrates

how the RSS alignment SERVICE screens are organized.

BNC

RIB

RLN-4008B

RIB POWER SUPPLY

01-80357A57 (120V)

COMPUTER INTERFACE

CABLE

30-80369B71

30-80369B72 (IBM "AT" ONLY)

DATA

BUSY

GND

COMPUTER

AUDIO GENERATOR

SINAD METER

AC VOLTMETER

30 dB PAD

RF GENERATOR

SYSTEM ANALYZER

OR COUNTER

WATTMETER

BATTERY

ELIMINATOR

RTL-4224A

TRANSMIT

RECEIVE

TEST SET

RTX-4005B



RADIO

PROGRAM/TEST CABLE

RKN-4046A

AUDIO IN

SET TO APPROX. 450mV FOR Tx

MEASURE 80mV FOR Tx

SMA-BNC

58-80348B33

REX-4424

RKN-4035D

RIB

RLN-4008B

RLN-1015A or

TEST SET

RLN-4460A or

RTX-4005B

Figure 2 RSS Service Menu Layout

All SERVICE screens read and program the radio codeplug directly; you do

NOT have to use the RSS GET/SAVE functions to use the SERVICE menus.

The SERVICE screens introduce the concept of the “softpot,” an analog

SOFTware-controlled POTentiometer used for adjusting all transceiver

alignment controls.

Each SERVICE screen provides the capability to increase or decrease the

‘softpot’ value with the keyboard UP/DOWN arrow keys respectively. A

graphical scale is displayed indicating the minimum, maximum, and

proposed value of the softpot, as shown in Figure 3.

Figure 3 Softpot Concept

REFERENCE OSCILLATOR ALIGNMENT

TRANSMIT POWER ALIGNMENT

TRANSMITTER ALIGNMENT MENU

TRANSMIT DEVIATION BALANCE 

(COMPENSATION) ALIGNMENT

TRANSMIT DEVIATION LIMIT ALIGNMENT

F2 -

F3 -

F4 -

F5 -

RECEIVER ALIGNMENT MENU

F3 -

FRONT END BANDPASS FILTER ALIGNMENTF2 -

SERVICE

HELPF1 -

EXIT, RETURN TO SERVICE MENUF10 -

Do NOT switch radios in the middle of any SERVICE

procedure. Always use the EXIT key to return to the

MAIN menu screen before disconnecting the radio.

Improper exits from the SERVICE screens may leave

the radio in an improperly conﬁgured state and

result in seriously degraded radio or system

performance.

C a u t i o n

Min.

Value Max.

Value

0

15

Adjusting the softpot value sends information to the radio to increase

(or decrease) a dc voltage in the corresponding circuit. For example,

pressing the UP arrow key at the Reference Oscillator screen instructs

the radio’s microcomputer to increase the voltage across a varactor in

the reference oscillator, which increases the frequency.

In ALL cases, the softpot value is just a relative number corresponding

to a digital-to-analog (D/A) generated voltage in the radio.

Perform the following procedures in the sequence indicated.

NOTE: Some of the following screens may

vary depending upon the radio under

test and the version of radio service

software you are using. Refer to your

radio service software user’s guide.

Reference

Oscillator

Alignment

Adjustment of the reference oscillator is critical for proper radio

operation. Improper adjustment will result not only in poor operation,

but also in a misaligned radio that will interfere with other users

operating on adjacent channels. For this reason, the reference

oscillator should be checked every time the radio is serviced. The

frequency counter used for this procedure must have a stability of 0.1

ppm (or better).

1. From the SERVICE MENU, press B to select the TRANSMITTER

ALIGNMENT MENU.

2. Press B again to select the REFERENCE OSCILLATOR alignment

screen. See Figure 4.

Figure 4 Reference Oscillator Alignment Screen

3. Press P (or Z or [RETURN]) to select a frequency ﬁeld

(starting with the highest frequency shown). Then, press F to

key the radio. The screen will indicate that the radio is

transmitting.

MOTOROLA Radio Service Software Use UP/DOWN Arrows To Adjust Softpot.

ASTRO Model: H09UCH9PW7AN

MAIN:SERVICE:TX ALIGN:REF OSC

REFERENCE OSCILLATOR

--------------------

Frequency Current Value

--------- -------------

869.9875 150 New Softpot Value.....150

Transmitter..On

0 255

MIN |----+----+----+----+----+----+----+----+----+----+----+----| MAX

F1 F2 F3 F4 F5 F6 F7 F8 F9 F10

HELP TOGGLE PROGRAM EXIT

PTT VALUE

4. Measure the transmit frequency on your service monitor.

5. Use the É/Ç arrow keys to adjust the reference oscillator softpot value.

See Table 9.

6. Press F again to dekey the radio.

7. Press H to program the new softpot value.

8. Press J once to return to the TRANSMITTER ALIGNMENT MENU, or

press J twice to return to the SERVICE MENU.

Transmit

Power

Alignment

NOTES:

•All power measurements are to be made at the antenna port.

•The transmitter power setting keeps the radiated power at or below

the level speciﬁed in the exclusionary clause for low power devices

of IEEE Standard C95.1-1991.

1. From the SERVICE MENU, press B to select the TRANSMITTER

ALIGNMENT MENU.

2. Press C to select the TRANSMIT POWER alignment screen. The screen

will indicate the transmit frequencies to be used. See Figure 5.

Figure 5 Transmit Power Alignment Screen

3. Press P (or Z or [RETURN]) to select a frequency ﬁeld (starting with

the highest frequency shown). Then, press F to key the radio. The

screen will indicate that the radio is transmitting.

4. Use the É/Ç arrow keys to adjust the transmit power per the values

shown in Table 10.

Table 9 Reference Oscillator Alignment

Band Target

800 MHz ±150 Hz

MOTOROLA Radio Service Software Use UP/DOWN Arrows To Adjust Softpot.

ASTRO Model: H09UCH9PW7AN

MAIN:SERVICE:TX ALIGN:TX POWER

TRANSMIT POWER

--------------

Current Value New Softpot Value

Frequency High Pwr Low Pwr High Pwr Low Pwr

--------- -------- ------- -------- -------

806.00000 35 35 10 23

815.00000 42 42 11 28

824.00000 50 50 20 33

851.00000 60 60 33 40

860.00000 70 70 43 45

869.00000 80 80 58 58

Transmitter..On

0 127

MIN |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| MAX

F1 F2 F3 F4 F5 F6 F7 F8 F9 F10

HELP TOGGLE PROGRAM EXIT

PTT VALUE

5. Press F to dekey the radio.

6. Press H to program the value.

7. Repeat steps 3-6 for the remaining frequencies.

8. Press J once to return to the TRANSMITTER ALIGNMENT MENU, or

press J twice to return to the SERVICE MENU.

Transmit

Deviation

Balance

(Compensation)

Alignment

Compensation alignment balances the modulation sensitivity of the VCO and

reference modulation (synthesizer low-frequency port) lines. The

compensation algorithm is critical to the operation of signalling schemes that

have very-low-frequency components (for example, DPL) and could result in

distorted waveforms if improperly adjusted.

1. From the SERVICE MENU, press B to select the TRANSMITTER

ALIGNMENT MENU.

2. Press D to select the TRANSMIT DEVIATION BALANCE

(COMPENSATION) alignment screen. The screen will indicate the

transmit frequencies to be used. See Figure 6.

Figure 6 Transmit Deviation Balance (Compensation) Alignment Screen

3. Press P (or Z or [RETURN]) to select a frequency ﬁeld (starting with

the lowest frequency shown).

4. Press D. This will cause the radio to key and the radio’s DSP IC to inject

an 80Hz tone into the RF board.

5. Measure the deviation and record this value.

6. Press D to dekey the radio.

Table 10 Transmit Power Setting

800MHz Power Level All Test Frequencies

3 Watts 3.2 - 3.4

MOTOROLA Radio Service Software Use UP/DOWN Arrows To Adjust Softpot.

ASTRO Model: H09UCH9PW7AN

MAIN:SERVICE:TX ALIGN:BAL ATTN

TRANSMIT DEVIATION BALANCE (COMPENSATION)

-----------------------------------------

Current

Frequency Value New Softpot Value

--------- ------- -----------------

806.000 30 30

815.000 30 30

824.000 30 30

851.000 45 45

860.000 45 45

869.000 45 45

Transmitter..Off

0 63

MIN |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| MAX

F1 F2 F3 F4 F5 F6 F7 F8 F9 F10

HELP TOGGLE LOW TOGGLE HIGH PROGRAM EXIT

TONE PTT TONE PTT VALUE

7. Press F. This will cause the radio’s DSP IC to change the injection tone

to 3kHz, 100mVrms. Use the É/Ç arrow keys to adjust the deviation to

within ±2% of the value recorded in step 5.

8. Repeat steps 4-7 until the 3kHz tone deviation is within ±2% of the 80Hz

tone deviation.

9. Press F again to dekey the radio.

10.Press H to program the new softpot value.

11.Repeat steps 3-10 for the remaining frequencies.

12.Press J once to return to the TRANSMITTER ALIGNMENT MENU, or

press J twice to return to the SERVICE MENU.

Transmit

Deviation

Limit

Alignment

IMPORTANT NOTE:

Put the radio in the RF test mode and scroll to

the ASTRO test environment, indicated by

“AST” on the display (refer to the

“Performance Checks” section for details). All

other deviation values are derived from the

ASTRO test environment mode transmit

deviation limit.

1. From the SERVICE MENU, press B to select the TRANSMITTER

ALIGNMENT MENU.

2. Press E to select the TRANSMIT DEVIATION LIMIT alignment screen.

The screen will indicate the transmit frequencies to be used. See Figure 7.

Figure 7 Transmit Deviation Limit Alignment Screen

3. Press P (or Z or [RETURN]) to select a frequency ﬁeld (starting with

the lowest frequency shown).

4. Press F to key the radio. Then use the É/Ç arrow keys to adjust for a

deviation per the values shown in Table 11.

MOTOROLA Radio Service Software Use UP/DOWN Arrows To Adjust Softpot.

ASTRO Model: H09UCH9PW7AN

MAIN:SERVICE:TX ALIGN:VCO ATTN

TRANSMIT DEVIATION LIMIT

------------------------

Current

Frequency Value New Softpot Value

--------- ------- -----------------

806.000 175 175

815.000 175 175

824.000 180 180

851.000 180 180

860.000 180 180

869.000 180 180

Transmitter..Off

0 255

MIN |----+----+----+----+----+----+----+----+X---+----+----+----| MAX

F1 F2 F3 F4 F5 F6 F7 F8 F9 F10

HELP TOGGLE PROGRAM EXIT

PTT VALUE

5. Press F again to dekey the radio.

6. Press H to program the softpot value.

7. Repeat steps 3-6 for the remaining frequencies.

8. Press J once to return to the TRANSMITTER ALIGNMENT MENU, or

press J twice to return to the SERVICE MENU.

Table 11 Transmit Deviation Limit

Band Deviation (Hz)

800 MHz 2785 - 2885

Notes

Basic Removal/Installation

Procedures 6

Introduction

to This Section This section gives basic procedures for removing and installing the XTS 3000

radio’s:

•Antenna,

•Battery,

•Belt Clip,

•Universal Connector Cover,

•Volume Knob, and

•Frequency Knob.

Antenna

Installing the

Antenna Screw the threaded end of the antenna into the antenna receptacle on the top

of the radio. Rotate the antenna clockwise until it seats ﬁrmly against the

bushing.

Removing the

Antenna Rotate the antenna counterclockwise until its threaded end unscrews from the

radio’s antenna receptacle.

Battery NOTE: The battery is shipped uncharged, and must be

charged before use.

To avoid a possible explosion:

• DO NOT replace the battery in an area labeled

“hazardous atmosphere.”

• DO NOT discard batteries in a ﬁre.

W A R N I N G

If your radio is programmed with volatile-key retention

(consult your service technician), encryption keys will be

retained for approximately 30 seconds after battery removal.

C a u t i o n

Installing the

Battery 1. Turn off the radio and hold it with the back of

the radio facing upward

2. Insert the top edge of the battery into the area

at the top of the radio between the radio’s

case and chassis. Make sure the three tabs on

the radio chassis align with the three slots

under the top edge of the battery.

3. Rotate the battery toward the radio, and

squeeze the battery and radio together until

the battery “clicks” in place.

Removing the

Battery 1. Turn off the radio and hold it so that the release

button on the bottom of the battery is facing

upward.

2. Press downward on the release button so the

battery disengages from the radio.

3. Remove the battery completely away from the

radio

Belt Clip NOTE: The battery must be removed from the radio

before the belt clip can be installed or removed.

Installing the

Belt Clip 1. Hold the battery in one hand so that the top of

the battery faces upward, and the back of the

battery faces you.

2. Holding the belt clip in the other hand with its

top facing upward, align the slide assembly on

the front of the belt clip with the slots on the

back of the battery.

3. Slide the belt clip downward toward the bottom

of the battery until the belt clip “clicks” in place.

Removing the

Belt Clip 1. Hold the battery (with belt clip installed) in one

hand so that the top of the battery faces upward,

and the front (radio side) of the battery faces

you.

2. At the top of the battery, press down on the belt

clip’s metal tab and slide the belt clip upward

until it disengages from the battery.

3. Continue to slide the belt clip upward until it is

free from the battery.

Slide

Assembly

Slots

Belt Clip

Battery

Metal

Tab

Press

Down

Universal

Connector

Cover

Installing the

Universal

Connector Cover

1. Looking at the antenna side of the radio,

insert the top (ﬂat) hooked end of the cover

into the slot on the top of the radio, above

the universal connector. Press downward on

the cover’s top to seat it in the slot.

2. While holding the cover seated in the top

slot, insert the cover’s bottom (rounded)

hooked end into the slot below the universal

connector. Press ﬁrmly inward on the cover’s

bottom until it snaps in place.

Removing the

Universal

Connector Cover

1. Looking at the antenna side of the radio,

insert a ﬂat-bladed screwdriver into the area

between the lower end of the universal

connector cover and the slot below the

universal connector.

2. Pry upward on the cover’s lower end until it

disengages from the radio.

Frequency

Knob NOTES:

•Refer to Figure 8, the Partial Exploded View, and Table 12, the

Partial Exploded View Parts List. Numbers in parentheses ( ) refer to

item numbers in Figure 8 and Table 12.

•The battery (7) should be removed from the radio before installing

or removing the frequency knob (1).

Removing the

Frequency Knob 1. Hold the radio in one hand so that the top of the radio faces upward, and

the front of the radio faces you.

2. With the other hand, grasp the frequency knob (1) and pull it upward,

while pushing it toward the back of the radio, until it is free from the

frequency insert (3).

3. While pressing the insert’s (3) two snap tabs away from the frequency

control shaft so that the insert disengages from the shaft, use needle-nosed

pliers to lift the insert up and off of the frequency control shaft.

4. Remove the secure lever (4) and the lightpipe (5).

Installing the

Frequency Knob 1. Hold the radio so that the top of the radio faces upward, and the front of

the radio faces you.

When the universal connector is not in use, keep it covered

with the universal connector cover.

C a u t i o n

Top

Slot

Bottom

Slot

Top

Hooked End

Bottom

Hooked End

2. Align the lightpipe (5) so that its straight tab is over the slot for the

illuminated pointer. Push the tab down into the slot so that it is securely

seated.

3. Place the secure lever (4) on the frequency control shaft, aligning it so that

its pointer is at the front of the radio and its two inner slots line up with

the two keys on the shaft. Slide the secure lever down to the bottom of the

shaft.

4. If you are replacing the escutcheon (2), remove the backing paper from

the escutcheon, align its alignment marker with the alignment notch

(between numbers 4 and 5) on the insert, and adhere it to the insert.

5. Place the frequency insert (3) and escutcheon (2) on the frequency control

shaft, aligning the insert’s D-shaped hole with the D-shaped shaft. Press

downward ﬁrmly on the insert until it “snaps” in place on the shaft.

6. Place the frequency knob (1) on the frequency insert (3), aligning it’s

pointer with the number “1” on the escutcheon (2). Press ﬁrmly

downward on the knob until it seats securely in place.

Volume Knob NOTES:

•Refer to Figure 8, the Partial Exploded View, and Table 12, the

Partial Exploded View Parts List. Numbers in parentheses ( ) refer to

item numbers in Figure 8 and Table 12.

•The battery (7) should be removed from the radio before installing

or removing the volume knob (8).

Removing the

Volume Knob 1. Hold the radio in one hand so that the top of the radio faces upward, and

the front of the radio faces you.

2. With the other hand, grasp the volume knob (8) and pull it upward, while

pushing it toward the back of the radio, until it is free from the volume

insert (9).

3. While pressing the volume insert’s (9) two snap tabs away from the

volume control shaft so that the insert disengages from the shaft, use

needle-nosed pliers to pull the insert up and off of the volume control

shaft.

4. Using needle-nosed pliers or some other pointed instrument, remove the

o-ring (21).

Installing the

Volume Knob 1. Place the o-ring (21) inside the volume insert (9), and press it downward

until it seats securely at the bottom of the insert.

2. Hold the radio so that the top of the radio faces upward, and the front of

the radio faces you.

3. Place the volume insert (9) on the volume control shaft, aligning its D-

shaped hole with the D-shaped shaft. Press downward ﬁrmly on the insert

until it “snaps” in place on the shaft.

4. Place the volume knob (8) on the volume insert (9), aligning the two lugs

on the inside of the knob with the insert’s two snap tabs. Press ﬁrmly

downward on the knob until it seats securely in place.

Figure 8 Partial Exploded View

123

456

ABC

DEF

GHI

JKL

MNO

PRS

TUV

WXY

HOME

XTS 3000

Alignment Notch

Alignment Marker

Table 12 Partial Exploded View Parts List

ITEM

NO. MOTOROLA

PART NO. DESCRIPTION

1 3605370Z01 KNOB, Frequency

2 1305374Z01 ESCUTCHEON, Frequency

3 4305373Z01 INSERT RETAINER, Frequency Knob

4 4305375Z01 LEVER, Secure Frequency

5 6105376Z01 LIGHTPIPE INDICATOR/STOP, Frequency

6 NTN8266A CLIP, Belt

7 NTN8298A Battery, NiCd

8 3605371Z01 KNOB, Volume

9 4305372Z01 INSERT RETAINER, Volume Knob

10 3305574Z01 LABEL, Motorola, Back

11 - - - - - - - - - - LABEL, Flashport

12 - - - - - - - - - - LABEL, Radio Serial Number

13 - - - - - - - - - - LABEL, Approval Agency

14 3305630Z02 LABEL, Bottom

15 NAF5037A

or NAF5039A

or NAF5042A

ANTENNA, 800MHz Whip (806-870 MHz)

ANTENNA, 800MHz Dipole (806-870 MHz)

ANTENNA, 800MHz Stubby Quarterwave

(806-870 MHz)

16 - - - - - - - - - - ESCUTCHEON, Concentric Switch (optional)

17 - - - - - - - - - - ESCUTCHEON, Toggle (optional)

18 1505579Z01 COVER, Dust, Universal Connector

19 3305573Z01 LABEL, Motorola, Front

20 3505586Z01 Gortex

21 3205379W01 O-Ring

Basic Theory of

Operation 7

General

Overview The ASTRO Digital XTS 3000 radio is a wideband, synthesized, ﬁxed-tuned

radio available in the 800MHz band. All ASTRO Digital XTS 3000 radios are

capable of both analog operation and ASTRO mode (digital) operation in

12.5kHz or 25kHz bandwidths.

The ASTRO Digital XTS 3000 radio includes the following major assemblies:

•Controller Board - contains the microcontrol unit (MCU) and its

associated memory and memory management integrated circuit (IC), the

audio power ampliﬁer, and a switching regulator.

•RF Board - contains all transmit, receive, and frequency generation

circuitry including the digital receiver back-end IC and the reference

oscillator.

•Vocoder Board - contains the digital signal processor (DSP) and its support

IC and associated memories.

•Controls/Universal Flex - contains volume/on/off switch, frequency

selector switch, push-to-talk (PTT) switch, monitor button, several

function-selectable switches, universal connector, speaker, and

microphone.

•Display (Full-Featured Model Only) - a four-line, 12-character liquid

crystal display (LCD).

•Keypad (Full-Featured Model Only) - a 3 x 6 keypad.

Analog Mode

of Operation When the radio is receiving, the signal comes from the antenna connector to

the RF board, passes through the RX/TX switch and the receiver front end. The

signal is then ﬁltered, ampliﬁed, and mixed with the ﬁrst local-oscillator signal

generated by the voltage-controlled oscillator (VCO).

The resulting intermediate frequency (IF) signal is fed to the IF circuitry, where

it is again ﬁltered and ampliﬁed. This ampliﬁed signal is passed to the digital

back-end IC, where it is mixed with the second local oscillator to create the

second IF at 450kHz. It is then converted to a digital bit stream and mixed a

third time to produce a baseband signal. This signal is passed to the vocoder

board through a current-driven differential output.

On the vocoder board, the digital- signal-processor-support IC digitally ﬁlters

and discriminates the signal, and passes it to the digital-signal processor (DSP).

The DSP decodes the information in the signal and identiﬁes the appropriate

destination for it. For a voice signal, the DSP will route the digital voice data

to the DSP-support IC for conversion to an analog signal. The DSP-support IC

will then present the signal to the audio power ampliﬁer, which drives the

speaker. For signalling information, the DSP will decode the message and pass

it to the microcontrol unit.

When the radio is transmitting, microphone audio is passed from the audio

power ampliﬁer (PA) to the DSP-support IC, where the signal is digitized. The

DSP-support IC passes digital data to the DSP, where pre-emphasis and low-

pass (splatter) ﬁltering are done. The DSP returns this signal to the DSP-

support IC, where it is reconverted into an analog signal and scaled for

application to the voltage-controlled oscillator as a modulation signal.

Transmitted signalling information is accepted by the DSP from the

microcontrol unit, coded appropriately, and passed to the DSP-support IC,

which handles it the same as a voice signal. Modulation information is passed

to the synthesizer along the modulation line. A modulated carrier is provided

to the RF PA, which transmits the signal under dynamic power control.

ASTRO Mode

of Operation In the ASTRO mode (digital mode) of operation, the transmitted or received

signal is limited to a discrete set of deviation levels, instead of continuously

varying. The receiver handles an ASTRO-mode signal identically to an analog-

mode signal up to the point where the DSP decodes the received data. In the

ASTRO receive mode, the DSP uses a speciﬁcally deﬁned algorithm to recover

information.

In the ASTRO transmit mode, microphone audio is processed identically to an

analog mode with the exception of the algorithm the DSP uses to encode the

information. This algorithm will result in deviation levels that are limited to

discrete levels.

RF Board Basic

Theory of

Operation

The receiver front end consists of a preselector, an RF ampliﬁer, a second

preselector, and a mixer. On the 800MHz receiver front end, both preselectors

are varactor-tuned, two-pole, ﬁxed-tuned ﬁlters. The RF ampliﬁer is a dual-

gate, gallium- arsenide based IC. The mixer is a double-balanced, active mixer

coupled by transformers. Injection is provided by the VCO through an

injection ﬁlter. See Table 13 for local oscillator (LO) and ﬁrst IF information.

The frequency generation function is performed by three ICs and associated

circuitry. The reference oscillator provides a frequency standard to the

synthesizer/prescaler IC, which controls the VCO IC. The VCO IC actually

generates the ﬁrst LO and transmit-injection signals and buffers them to the

required power level. The synthesizer/prescaler circuit module incorporates

frequency-division and comparison circuitry to keep the VCO signals stable.

The synthesizer/prescaler IC is controlled by the microcontrol unit through a

serial bus. Most of the synthesizer circuitry is enclosed in rigid metal cans on

the RF board to reduce microphonic effects.

The receiver back end consists of a two-pole crystal ﬁlter, an IF ampliﬁer, a

second two-pole crystal ﬁlter, and the digital back-end IC. The two-pole ﬁlters

are wide enough to accommodate 5kHz modulation. Final IF ﬁltering is done

digitally in the DSP-support IC.

Table 13 Local Oscillator and First IF Frequencies

800MHz

LO Frequency Range 732.65-796.65MHz

First IF Frequency 73.35MHz

The digital back-end IC consists of an ampliﬁer, the second mixer, an

IF analog-to-digital converter, a baseband down-converter, and a

2.4MHz synthesis circuit to provide a clock to the DSP-support IC on

the vocoder board. The second LO is generated by discrete

components external to the IC. The output of the digital back-end IC

is a digital bit stream that is current driven on a differential pair for a

reduction in noise generation.

The transmitter consists of an RF PA IC that gets an injection signal

from the VCO. Transmit power is controlled by two custom ICs that

monitor the output of a directional coupler and adjust PA control

voltages correspondingly. The signal passes through a RX/TX switch

that uses PIN diodes to automatically provide an appropriate interface

to transmit or receive signals. Antenna selection is done mechanically

in the control top.

Controller Board

Basic Theory of

Operation

The controller board contains the radio’s microcontrol unit with its

memory and support circuits, voltage regulators, audio, and power

control circuits. Connected to the controller board are the display

board, RF board, vocoder board, keypad board, controls/universal ﬂex,

and (optional) encryption module.

The microcontrol unit controls receive/transmit frequencies, power

levels, display, and other radio functions, using either direct logic

control or serial communications paths to the devices.The

microcontrol unit executes a stored program located in the FLASH

ROM. Data is transferred to and from memory by the microcontrol

unit data bus. The memory location from which data is read, or to

which data is written, is selected by the address lines.

The support-logic IC acts as an extension of the microcontrol unit by

providing logic functions such as lower address latch, reset, memory

address decoding, and additional control lines for the radio. The

microcontrol unit controls the crystal-pull circuit to adjust the crystal

oscillator’s frequency on the microcontrol unit, so that the E-clock’ s

harmonics do not cause interference with the radio’s receive channel.

The regulator and power-control circuits include an unswitched +5V

discrete circuit and the regulator/power-control IC. Switched +5V is

used for all circuits on the controller board except the audio PA, which

is sourced from 7.5V. The regulator automatically provides 5V when

the radio is turned on. The regulator’s power-down mode is controlled

by the microcontrol unit, which senses the position of the on/off

switch.

Vocoder Board

Basic Theory of

Operation

The vocoder board contains the digital-signal processor (DSP), its

memory devices, and the DSP-support IC.

The DSP performs signalling and voice encoding and decoding as well

as audio ﬁltering and volume control. This IC performs Private-Line®/

Digital Private Line™ (PL/DPL) encode and alert-tone generation. The

IC transmits pre-emphasis on analog signals and applies a low-pass

(splatter) ﬁlter to all transmitted signals. It requires a 33MHz crystal to

function. An 8kHz interrupt signal generated by the DSP-support IC is

also required for functionality. It is programmed using parallel

programming from the microcontrol unit and the DSP-support IC.

The DSP-support IC performs analog-to-digital and digital-to-analog

conversions on audio signals. It contains attenuators for volume,

squelch, deviation, and compensation, and it executes receiver

ﬁltering and discrimination. The IC requires a 2.4MHz clock to

function (generated by the digital back-end IC) and is programmed by

the microcontrol unit SPI bus.

Radio-Level

Troubleshooting 8

Introduction

to This Section This section of the manual contains troubleshooting charts and error codes

that will help you to isolate a problem. Level one troubleshooting will support

only radio alignment, programming, battery replacement, and knob

replacement. If the radio needs further troubleshooting, it must be sent to the

depot.

Board- and component-level and service information can be found in the

“ASTRO Digital XTS 3000 Portable Radios Detailed Service Manual,” Motorola

publication number 68P81083C90.

Power-Up

Error Codes When the radio is turned on (power-up), the radio performs cursory tests to

determine if its basic electronics and software are in working order. Problems

detected during these tests are presented as error codes on the radio’s display.

The presence of an error should prompt the user that a problem exists and that

a service technician should be contacted.

Self-test errors are classiﬁed as either fatal or non-fatal. Fatal errors will inhibit

user operation; non-fatal errors will not. Use Table 14 to aid in understanding

particular power-up error code displays.

Table 14 Power-Up Error Code Displays

Error

Code Description Corrective Action

01/02 External EEPROM Checksum Non-Fatal Error Reprogram codeplug.

01/81 ROM Checksum Failure Send radio to depot.

01/82 External EEPROM Checksum Failure Reprogram the codeplug.

01/84 SLIC Initialization Failure Turn the radio off, then on.

01/88 RAM Failure - Note: not a checksum failure Turn the radio off, then on.

01/90 General Hardware Failure Turn the radio off, then on.

01/92 Internal EEPROM Checksum Failure Reprogram the codeplug.

02/10 DSP support IC checksum Non-Fatal Error Turn the radio off, then on.

02/81 DSP ROM Checksum Failure Send radio to depot.

02/88 DSP RAM Failure - Note: not a checksum failure Turn the radio off, then on.

02/90 General DSP Hardware Failure (DSP startup message not received correctly) Turn the radio off, then on.

02/A0 ADSIC Checksum Failure - Non-Fatal Error Turn the radio off, then on.

09/10 Secure Hardware Failure Send radio to depot.

09/90 Secure Hardware Failure Send radio to depot.

Note: If the corrective action does not fix the failure, send the radio to the depot.

Operational Error

Codes During radio operation, the radio performs dynamic tests to determine

if the radio is working properly. Problems detected during these tests

are presented as error codes on the radio’s display. The presence of an

error code should prompt a user that a problem exists and that a

service technician should be contacted. Use Table 15 to aid in

understanding particular operational error codes.

Table 15 Operational Error Code Displays

Error Code Description Corrective Action

FAIL 001 Synthesizer Out-of-Lock a. Reprogram codeplug

b. Send radio to depot

FAIL 002 Selected Mode/Zone Codeplug Checksum Error Reprogram codeplug

Table 16 Receiver Troubleshooting Chart

Symptom Possible Cause Correction or Test (Measurements

Taken at Room Temperature)

Radio Dead; Display Does

Not Light Up 1. Dead Battery Replace with charged battery.

2. Blown Fuse Send radio to depot.

3. On/Off Switch

4. Regulators

Radio Dead; Display

Lights Up 1. Controller Board Send radio to depot.

2. RF Board

No Receiver Audio or

Receiver Does Not Unmute Programming a. Does the transmitted signal match the receiver

conﬁguration (PL, DPL, etc.)?

b. With the monitor function enabled, can the radio

be unmuted?

Audio Distorted or Not Loud

Enough Synthesizer Not On

Frequency Check synthesizer frequency by measuring the transmitter

frequency; if off by more than ±250Hz, realign.

RF Sensitivity Poor 1. Synthesizer Not

On Frequency Check synthesizer frequency by measuring the transmitter

frequency; if off by more than ≤ ±600Hz, realign.

2. Antenna Switch Send radio to depot.

3. Receiver Front-

End Tuning

(VHF/ UHF only)

Check RF front-end tuning for optimum sensitivity using

the RSS.

Radio Will Not Turn Off Controller Board Send radio to depot.

Table 17 Transmitter Troubleshooting Chart

Symptom Possible Cause Correction or Test

(Measurements Taken at Room

Temperature)

No RF Power Out 1. TX Power Level or Frequency Check TX power level and frequency

programming (from RSS).

2. No PTT From Control Top Send radio to depot.

3. No Injection To Power Ampliﬁer

No Modulation;

Distorted Modulation 1. Programming Check deviation and compensation

settings using the RSS.

2. Controller Board Send radio to depot.

Bad Microphone Sensitivity 1. Check Deviation and Compensation Realign if necessary.

2. Microphone Send radio to depot.

No/Low Signalling

(PL, DPL, MDC) 1. Programming Check Programming

2. Controller Board Send radio to depot.

Can’t Set Compensation RF Board Send radio to depot.

Table 18 Encryption Troubleshooting Chart

Symptom Possible Cause Corrective Action

No “ ” on Radio Display When Keyloading

Cable is Attached to the Radio Side Connector 1. Defective Keyload Cable Send radio to depot.

2. Defective Radio

Keyloader Displays “ .” 1. Wrong Keyloader Make Sure the Keyloader

is a “T----CX” or

“T----DX” Keyloader.

2. Bad Keyloader Try Another Keyloader

3. Defective Radio Send radio to depot.

Note: Keyloaders “T----AX” and “T----BX” must be upgraded to “T----CX” and “T----DX” in order to

keyload an XTS 3000 radio.

Notes

Complete

Incomplete

Correct

Incorrect

Clear

Confusing

Size

Adequate

Size

Too Small

Not Covered

in This Manual

Performance

Checks

Radio Alignment

Procedures

Disassembly/Reassembly

Procedures

Basic 

Theory of Operation

Board-Level

Troubleshooting

Schematic 

Diagrams

Exploded View

Parts List

In reference to Manual Number: 68P81083C85-O

TM Digital XTS 3000TM Portable Radios

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REPLACEMENT PARTS ORDERING

When ordering replacement parts or equipment

information, the complete identification number

should be included. This applies to all

components, kits, and chassis. If the component

part number is not known, the order should include

the number of the chassis or kit of which it is a

part, and sufficient description of the desired

component to identify it.

Crystal and channel element orders should

specify the crystal or channel element type

number,

Americas Parts Division:

Call: 1-800-422-4210

Parts Identification:

Call: 708-538-0021

Customer Response Center

(Sales and Service Assistance):

Call: 1-800-247-2346

FAX: 1-800-232-9272

crystal and carrier frequency, and the model

number in which the part is used.

Orders for active filters, Vibrasender and

Vibrasponder resonant reeds should specify type

number and frequency, should identify the

owner/operator of the communications system in

which these items are to be used, and should

include any serial numbers stamped on the

components being replaced.

Americas Parts Division: Field Assist Service Training

Call: 1-800-422-4210 (FAST VHS Video Tapes):

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1-708-538-8023 (International Orders)

Americas Parts Division: Federal Government Orders:

FAX: 708-538-8198 (Domestic) FAX: 410-712-4991

708-576-3023 (International)

Parts ID: 708-538-8194

Telex: 280127 (Domestic)

403305 (International)

Send written orders to the following addresses:

Federal Government Orders:

Motorola Inc.

Americas Parts Division

Attention: Order Processing

7230 Parkway Drive

Landover, MD 21076

International Orders:

Motorola Inc.

Americas Parts Division

Attention: International Order Processing

1313 E. Algonquin Road

Schaumburg, IL 60196

Replacement Parts/

Test Equipment/Manuals

Crystal Service Items:

Motorola Inc.

Americas Parts Division

Attention: Order Processing

1313 E. Algonquin Road

Schaumburg, IL 60196

ORDERING INFORMATION

TEPF-9679-S

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Digital XTS 3000

Portable Radios

Basic Service Manual

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8000 West Sunrise Boulevard

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68P81083C85-O

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