Name: Motorola Pro3100
Brand: Motorola
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Section 5: 4-40 UHF Band 1 (403–470 MHz) 1–25 W PCB 8471224L04, Schematics, and Parts Lists

6881091C63-F

†

Replacement boards must be ordered from

RPSO (formerly CCSD and/or AAD) using the

number shown in the model charts in Section 1.

Boards are not orderable using the 84-prefixed

number.

VR4471 4813977M11 DIODE,ZEN,MBZ5232,SM,SOT-

23,5.6V,10MA,.225W,ZEN,PB-

FREE

Y3101 4802245J84 XTAL 44.395MHZ, 3RD OT, SMD

Y3102 9186145B02 CER.DISCR. CDBCA455CX36-TC

Y4262 4816142H01 REFERENCE OSCILLATOR

Circuit

Ref

Motorola

Part No.

Description

Product Safety and RF Exposure Compliance2
Foreword2
Manual Revisions2
Computer Software Copyrights2
Document Copyrights2
Disclaimer2
Trademarks2
Document History3
Section 1: Service Maintainability7
- Introduction9
- Maintenance13
- Service Aids23
  - 1.0 Recommended Service Tools23
  - 2.0 Recommended Test Equipment25
Section 2: Control Head Service Information27
- Overview29
- Theory of Operation31
- Troubleshooting Charts39
  - 1.0 Control Head CDM750 / PRO3100 Troubleshooting Flow Charts39
  - 2.0 Control Head CDM1250 / PRO5100 / CDM1550 Series / PRO7100 Troubleshooting Flow Charts41
- Control Head PCBs, Schematics, and Parts Lists45
Section 3: Controller Service Maintainability57
- Theory of Operation59
  - 1.0 Controller Circuits59
  - 2.0 Controller Board Audio and Signaling Circuits68
- Troubleshooting Charts79
  - 1.0 Troubleshooting Flow Chart for Controller79
- Controller Schematics and Parts Lists81
Section 4: VHF (136–174 MHz) 1–25 W Service Information147
- Model Charts and Technical Specifications149
  - 1.0 VHF (136–174 MHz) 1–25W Model Charts149
  - 2.0 Technical Specifications150
- Theory of Operation153
- Troubleshooting Charts161
- VHF (136–174 MHz) 1–25 W PCBs, Schematics, and Parts Lists169
Section 5: UHF Band 1 (403–470 MHz) 1–25 W Service Information227
- Model Charts and Technical Specifications229
  - 1.0 UHF Band 1 (403–470 MHz) 1–25 W Model Charts229
  - 2.0 Technical Specifications230
- Theory of Operation233
- Troubleshooting Charts243
- UHF Band 1 (403–470 MHz) 1–25 W PCBs, Schematics, and Parts Lists251
Section 6: UHF Band 2 (450–512/527 MHz) 1–25W Service Information291
- Model Charts and Technical Specifications293
  - 1.0 UHF Band 2 (450–512/527 MHz) 1–25 W Model Charts293
  - 2.0 Technical Specifications294
- Theory of Operation297
- Troubleshooting Charts307
- UHF Band 2 (450–512/527 MHz) 1–25 W PCBs, Schematics, and Parts Lists315
  - 1.0 Allocation of Schematics and Circuit Boards315
  - 2.0 UHF Band 2 (450–512/527 MHz) 1–25 W PCB 8485671Z03, Schematics, and Parts Lists317
    - UHF B2 1–25 W PCB 8485671Z03 Parts List†324
Section 7: Low Band Service Information329
- Model Charts and Technical Specifications331
- Theory of Operation337
- Troubleshooting Charts347
- Low Band PCBs, Schematics, and Parts Lists353
Section 8: VHF (136–174 MHz) 25–45 W Bipolar Service Information453
- Model Charts and Technical Specifications455
  - 1.0 VHF (136–174 MHz) 25–45 W Bipolar Model Charts455
  - 2.0 Technical Specifications456
- Theory of Operation459
- Troubleshooting Charts467
- VHF (136–174 MHz) 25–45 W Bipolar PCBs, Schematics, and Parts Lists473
Section 9: UHF Band 1 (403–470 MHz) 25–40 W Bipolar Service Information491
- Model Charts and Technical Specifications493
  - 1.0 UHF Band 1 (403–470 MHz) 25–40 W Bipolar Model Charts493
  - 2.0 Technical Specifications494
- Theory of Operation497
- Troubleshooting Charts505
- UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCBs, Schematics, and Parts Lists511
  - 1.0 Allocation of Schematics and Circuit Boards511
  - 2.0 UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCB 8480643Z06, Schematics, and Parts Lists513
    - UHF B1 25–40 W PCB 8480643Z06 Parts List†520
Section 10: UHF Band 2 (450–512/520 MHz) 25–40W Bipolar Service Information525
- Model Charts and Technical Specifications527
  - 1.0 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar Model Charts527
  - 2.0 Technical Specifications528
- Theory of Operation531
- Troubleshooting Charts539
- UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCBs, Schematics, and Parts Lists545
  - 1.0 Allocation of Schematics and Circuit Boards545
  - 2.0 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCB 8480645Z04, Schematics, and Parts Lists547
    - UHF B2 25–40 W PCB 8480645Z04 Parts List†554
Section 11: VHF (136–174 MHz) 25–45 W LDMOS Service Information559
- Model Charts and Technical Specifications561
  - 1.0 VHF (136–174 MHz) 25–45 W LDMOS Model Charts561
  - 2.0 Technical Specifications562
- Theory of Operation565
- Troubleshooting Charts573
- VHF (136–174 MHz) 25–45 W LDMOS PCBs, Schematics, and Parts Lists581
Section 12: UHF Band 1 (403–470 MHz) 25–40 W LDMOS Service Information603
- Model Charts and Technical Specifications605
  - 1.0 UHF Band 1 (403–470 MHz) 25–40 W LDMOS Model Charts605
  - 2.0 Technical Specifications606
- Theory of Operation609
- Troubleshooting Charts617
- UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCBs, Schematics, and Parts Lists625
Section 13: UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS Service Information649
- Model Charts and Technical Specifications651
  - 1.0 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS Model Charts651
  - 2.0 Technical Specifications652
- Theory of Operation655
- Troubleshooting Charts665
- UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS PCBs, Schematics, and Parts Lists671

Motorola Pro3100 Detailed Service Manual

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Brand	Motorola
Model	Pro3100
Category	Two-Way Radio
Language	English