Motorola 89FT4828 User Manual

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 VHF Radios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv

Specifications for UHF Radios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Specifications for 800 MHz Radios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

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

A

, Motorola, ASTRO, XTS 3500, 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. 9/98

Basic Service Manual

68P81089C80-O

i

ii

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

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

VOCON 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 3500 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 3500 Model I User Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68P81089C77

ASTRO Digital XTS 3500 Model II User Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68P81089C78

ASTRO Digital XTS 3500 Model III User Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68P81089C79

ASTRO Digital XTS 3500 Detailed Service Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . .68P81089C81

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, but not limited to,
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, reproduced, modified, reverse-engineered, or distributed 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 license to use
that arises by operation of law in the sale of a product.

iii

iv vi

C

or

or

C

or

or

SPECIFICATIONS FOR VHF RADIOS

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

GENERAL

FCC Designation: AZ489FT3790
Temperature Range:

Operating:
Storage:

Power Supply: Nickel-Cadmium Battery (NiCd)

Nickel-Metal-Hydride Battery (NiMH)

Lithium-Ion Battery (Li-Ion)

Battery Voltage:

Nominal:
Range:

Transmit Current Drain (Typical): 2300mA
Receive Current Drain (Rated Audio): 290mA
Standby Current Drain:

Recommended Battery:

Ultra-HIgh-Capacity NiCd:

Ultra–High-Capacity NiCd FM: NTN8295*
Ultra–High-Capacity NiMH FM: NTN8299A*

Optional FM (Factory Mutual) Battery:

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

Groups C, D,E, F, and G. FM Non-incendive:
Class 1, Division 2, Groups A, B, C, and D.

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 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)

–30
–40

°

°

C to +60
C to +85

7.5 Volts

6 to 9 Volts

90mA

NTN8294A

°

°

RECEIVER TRANSMITTER

Frequency Range:

Bandwidth:

Quieting Sensitivity (20dBQ): 0.35
Usable Sensitivity

(12dB SINAD):

Intermodulation:

Selectivity (typical)

(25/30kHz Channel):

Spurious Rejection:

Frequency Stability

°

C; 25

°

(–30+60

Rated Audio:

Distortion (At Rated Audio):

Channel Spacing:

C reference):

0.25

–78dB (typical)

12.5/20/25/30kHz

136-178MHz

42MHz

m

V (typical)

m

V (typical)

–78dB

–70dB

±

.0002%

500mW

2% Typical

RF Power:

136-174MHz:
174-178MHz:

Frequency Range:

Frequency Stability (typical)

(–30 to +60

Emission (Conducted and Radiated): –70dBc

FM Hum and Noise (typical)

(Companion Receiver): 25/30kHz –48dB

Distortion:

Modulation Limiting: 25/30kHz chnls

Emissions Designators:

20K0F1E, 16K0F3E, 11K0F3E,

8K10F1D, and 8K10F1E

°

C; 25

°

C ref.):

20kHz chnls

12.5kHz chnls

1 Watt/5 Watts
1 Watt/4 Watts

136-178MHz

±

.0002%

12.5kHz –42dB

2% Typical

±

5.0kHz

±

4.0kHz

±

2.5kHz

Weight: (w/Helical Antenna)

Less Battery:
With Ultra-High Cap. NiCd: 25.19oz. (693gm)
With Ultra-High Cap. NiMH: 23.45oz. (644gm)

14.10oz. (383gm)

Specifications subject to change without notice

C

or

or

C

or

or

SPECIFICATIONS FOR UHF RADIOS

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

GENERAL

FCC Designation: AZ489FT4828
Temperature Range:

Operating:
Storage:

Power Supply: Nickel-Cadmium Battery (NiCd)

Nickel-Metal-Hydride Battery (NiMH)

Lithium-Ion Battery (Li-Ion)

Battery Voltage:

Nominal:
Range:

Transmit Current Drain (Typical): 1700mA
Receive Current Drain (Rated Audio): 290mA
Standby Current Drain:

Recommended Battery:

Ultra-HIgh-Capacity NiCd:

Ultra–High-Capacity NiCd FM: NTN8295*
Ultra–High-Capacity NiMH FM: NTN8299A*

Optional FM (Factory Mutual) Battery:

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

Groups C, D,E, F, and G. FM Non-incendive:
Class 1, Division 2, Groups A, B, C, and D.

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 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)

–30
–40

°

°

C to +60

°

C to +85

°

7.5 Volts

6 to 9 Volts

90mA

NTN8294A

RECEIVER TRANSMITTER

Frequency Range:

Bandwidth:

Quieting Sensitivity (20dBQ): 0.316

Usable Sensitivity

(12dB SINAD):

Intermodulation:

Selectivity (typical)

(25/30kHz Channel):
(12.5kHz Channel):

Spurious Rejection:

Frequency Stability

(–30+60

°

C; 25

°

C reference):

Rated Audio:

Distortion (At Rated Audio):

Channel Spacing:

403-520MHz

0.25

–78dB (typical)

1.5% Typical

12.5/20/25/30kHz

70MHz

m

V (typical)

m

V (typical)

–78dB
–68dB

–75dB

±

.0002%

500mW

RF Power:

403-470MHz:
450-520MHz:

Frequency Range:

Frequency Stability (typical)

(–30 to +60

Emission (Conducted and Radiated): –70dBc

FM Hum and Noise (typical)

(Companion Receiver): 25/30kHz –48dB

Distortion:

Modulation Limiting: 25/30kHz chnls

Emissions Designators:

20K0F1E, 16K0F3E, 11K0F3E,

8K10F1D, and 8K10F1E

°

C; 25

°

C ref.):

20kHz chnls

12.5kHz chnls

1 Watt/5 Watts
1 Watt/5 Watts

403-520MHz

±

.0002%

12.5kHz –42dB

1.5% Typical

±

5.0kHz

±

4.0kHz

±

2.5kHz

Weight: (w/Helical Antenna)

Less Battery:
With Ultra-High Cap. NiCd: 25.19oz. (693gm)
With Ultra-High Cap. NiMH: 23.45oz. (644gm)

14.10oz. (383gm)

Specifications subject to change without notice

vii

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°C
Storage: –40°C to +85°C

Power Supply: Nickel-Cadmium Battery (NiCd)

or Nickel-Metal-Hydride Battery (NiMH)

or Lithium-Ion Battery (Li-Ion)

Battery Voltage:

Nominal: 7.5 Volts
Range: 6 to 9 Volts

Transmit Current Drain (Typical): 1700mA
Receive Current Drain (Rated Audio): 280mA
Standby Current Drain: 90mA

Recommended Battery:

Ultra-HIgh Capacity NiMH: H335AC

or Ultra–High Capacity NiCd FM: H223AX*
or 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)

Frequency Range: 851–870MHz

Bandwidth: 19MHz

Quieting Sensitivity (20dBQ): 0.5mV Max.

Usable Sensitivity

(12dB SINAD): 0.35mV 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

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)

viii

Specifications subject to change without notice

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

!

Introduction

1

General

Notations Used
in This Manual

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 VHF, UHF, and
800MHz frequency bands, a general description of XTS 3500 models,
recommended test equipment, service aids, radio alignment procedures,
general maintenance recommendations, and procedures for basic assembly
and disassembly.

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.

1

Radio
Description

Feature Model I Model II Model III

Display None LCD

Keypad None 3 x 2 button 3 x 6 button

The ASTRO Digital XTS 3500 radios are among the most sophisticated two­way radios available. The radio is presently available in the UHF R2 band;
radios in the UHF R1, VHF, and 800MHz bands will be available by the end of

1999.

One of the newest in a long line of quality Motorola products, the ASTRO
Digital XTS 3500 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 3500 radios are available in two basic models. Table 1
provides a description of their basic features.

Table 1 ASTRO XTS 3500 Basic Features

LCD

4 lines/

12 characters per line

4 lines/

12 characters per line

Channel Capability 48 255 255
Dialing from Prestored List No Yes Yes
Programmable Softkeys No Yes Yes

FLASHport

The ASTRO Digital XTS 3500 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.

2

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

Basic Maintenance

2

Introduction
to This Section

Preventive
Maintenance

Inspection

Cleaning

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.

The ASTRO Digital XTS 3500 radios do not require a scheduled preventive
maintenance program; however, periodic visual inspection and cleaning is
recommended.

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.

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, non­metallic, 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.

3

Handling
Precautions

Complementary metal-oxide semiconductor (CMOS) devices, and other high­technology 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.

4