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Section 12: 3-1
Chapter 3
TROUBLESHOOTING CHARTS
1.0
Troubleshooting Flow Chart for Receiver (Sheet 1 of 2)
Bad SINAD
Bad 20dB Quieting
No Recovered Audio
START
Audio at
pin 8 of
U3101?
Check Controller
(in the case of no audio)
OR ELSE go to “B”
Yes
No
Spray or inject 44.85MHz
into XTAL Filter FL3101
Audio heard?
B
Yes
No
Check 2nd LO
(44.395MHz) at C3135
LO present?
B
Yes
Check voltages on
U3101
Biasing OK?
No
No
A
Yes
Check Q3102 bias
for faults
Replace Q3102
Go to B
Yes
No
Check circuitry
around U3101.
Replace
U3101 if defect
Check circuitry around Y3101.
Replace Y3101 if defect
Voltages
OK?
Содержание PRO Series
Страница 1: ...CDM Series and PRO Series Two Way Mobile Radios Detailed Service Manual 6881091C63 F ...
Страница 4: ...Notes ...
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Страница 8: ...Section 1 ii 6881091C63 F Notes ...
Страница 12: ...Section 1 1 4 Radio Model Information 6881091C63 F Notes ...
Страница 22: ...Section 1 2 10 Notes For All Schematics and Circuit Boards 6881091C63 F Notes ...
Страница 46: ...Section 2 4 2 Allocation of Schematics and Circuit Boards 6881091C63 F Notes ...
Страница 78: ...Section 3 1 20 Controller Board Audio and Signaling Circuits Section 6881091C63 F Notes ...
Страница 80: ...Section 3 2 2 Troubleshooting Flow Chart for Controller 6881091C63 F Notes ...
Страница 84: ...Section 3 3 4 Allocation of Schematics and Circuit Boards 6881091C63 F Notes ...
Страница 146: ...Section 3 3 66 Controller T6 T7 Schematics and Parts Lists 8471235L06 Notes 6881091C63 F ...
Страница 152: ...Section 4 1 4 Technical Specifications 6881091C63 F Notes ...
Страница 168: ...Section 4 3 8 Troubleshooting Flow Chart for VCO 6881091C63 F Notes ...
Страница 172: ...Section 4 4 4 Allocation of Schematics and Circuit Boards 6881091C63 F Notes ...
Страница 214: ...Section 4 4 46 VHF 136 174 MHz 1 25 W PCB 8486172B08 Schematics and Parts Lists Notes 6881091C63 F ...
Страница 232: ...Section 5 1 4 Technical Specifications 6881091C63 F Notes ...
Страница 242: ...Section 5 2 10 UHF Band 1 403 470 MHz 1 25 W Frequency Synthesis 6881091C63 F Notes ...
Страница 296: ...Section 6 1 4 Technical Specifications 6881091C63 F Notes ...
Страница 306: ...Section 6 2 10 UHF Band 2 450 512 527 MHz 1 25 W Frequency Synthesis 6881091C63 F Notes ...
Страница 316: ...Section 6 4 2 Allocation of Schematics and Circuit Boards 6881091C63 F Notes ...
Страница 328: ...Section 6 4 14 UHF Band 2 450 512 527 MHz 1 25 W PCB 8485671Z03 Schematics and Parts Lists Notes 6881091C63 F ...
Страница 352: ...Section 7 3 6 Troubleshooting Flow Chart for VCO 6881091C63 F Notes ...
Страница 356: ...Section 7 4 4 Allocation of Schematics and Circuit Boards 6881091C63 F Notes ...
Страница 458: ...Section 8 1 4 Technical Specifications Section 6881091C63 F Notes ...
Страница 474: ...Section 8 4 2 Allocation of Schematics and Circuit Boards 6881091C63 F Notes ...
Страница 496: ...Section 9 1 4 Technical Specifications Section 6881091C63 F Notes ...
Страница 512: ...Section 9 4 2 Allocation of Schematics and Circuit Boards 6881091C63 F Notes ...
Страница 524: ...Section 9 4 14 UHF Band 1 403 470 MHz 25 40 W Bipolar PCB 8480643Z06 Schematics and Parts Lists Notes 6881091C63 F ...
Страница 530: ...Section 10 1 4 Technical Specifications Section 6881091C63 F Notes ...
Страница 546: ...Section 10 4 2 Allocation of Schematics and Circuit Boards 6881091C63 F Notes ...
Страница 558: ...Section 10 4 14 UHF Band 2 450 512 520 MHz 25 40 W Bipolar PCB 8480645Z04 Schematics and Parts Lists Notes 6881091C63 F ...
Страница 564: ...Section 11 1 4 Technical Specifications 6881091C63 F Notes ...
Страница 580: ...Section 11 3 8 Troubleshooting Flow Chart for VCO 6881091C63 F Notes ...
Страница 582: ...Section 11 4 2 Allocation of Schematics and Circuit Boards 6881091C63 F Notes ...
Страница 608: ...Section 12 1 4 Technical Specifications 6881091C63 F Notes ...
Страница 624: ...Section 12 3 8 Troubleshooting Flow Chart for PassPort 6881091C63 F Notes ...
Страница 626: ...Section 12 4 2 Allocation of Schematics and Circuit Boards 6881091C63 F Notes ...
Страница 648: ...Section 12 4 24 UHF Band 1 403 470 MHz 25 40 W LDMOS PCB 8471223L02 Schematics and Parts Lists Notes 6881091C63 F ...
Страница 654: ...Section 13 1 4 Technical Specifications 6881091C63 F Notes ...
Страница 664: ...Section 13 2 10 UHF Band 2 450 512 520 MHz 25 40 W LDMOS Frequency Synthesis 6881091C63 F Notes ...
Страница 672: ...Section 13 4 2 Allocation of Schematics and Circuit Boards 6881091C63 F Notes ...
Страница 684: ...Section 13 4 14 UHF Band 2 450 512 520 MHz 25 40 W LDMOS PCB 8486250Z02 Schematics and Parts Lists Notes 6881091C63 F ...