Philips PRP73 - Transceiver Servicing

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Contents3
List of Illustrations5
Product Support Policy7
Product Technology7
Survey of Service Levels7
Service Bulletins8
General Information9
Introduction9
Summary of Data10
Associated Equipment11
Ancillary Items12
Equipment Variations12
CTCSS Tone Frequencies13
Selcall Tone Frequencies13
Commissioning14
Unpacking14
Battery Warning Label14
Charging the Battery15
Fitting the Antenna15
Fitting the Wrist Lanyard/'D' Ring16
Fitting the Belt Clip/Stud17
Fitting a Battery17
LCD Display18
Technical Description21
Transceiver Top Level Block Diagram21
Radio PCB Description21
Radio PCB Top Level Diagram21
Analogue Power Supplies22
Radio PCB Power Supplies22
Frequency Generation23
Synthesiser Block Diagram23
Transmitter Block Diagram24
Receiver Block Diagram25
Noise Squelch26
Calibration Memory26
IC401-Radio Support ASIC26
ASIC3 (IC401) Diagram28
Control PCB Description29
Overall Top Level Control Block Diagram29
Power Supply and On/Off Control29
On/Off Circuit30
Turning on30
Turning off31
Processor Control System31
IC2 Overall Block Diagram32
Memory Map33
Serial Bus Structure34
Display and Keypads35
Audio Processing35
Receiver Audio Path35
Transmitter Audio Path35
Signaling Options36
Selcall36
Encode36
Decode36
Tx/Rx Audio Path Block Diagram38
Ctcss39
Toneburst39
Facility Socket Interface39
Ic340
IC2 Pin Functions40
IC3 Block Diagram42
IC3 Pin Functions44
IC401 Pin Functions45
Servicing48
Dis-Assembly48
Removal of the Radio PCB48
Removal of the Control PCB49
E0 Band Control Pcbs49
Re-Assembly49
Test Information, Equipment and Data49
Transceiver Dis-Assembly50
Test Equipment51
Radio Test Interface Unit 9525 701 54008 (TIU)52
Circuit Description53
TIU Circuit Diagram53
Power Supplies53
Components53
Dummy Battery Circuit54
Initialization55
Test Equipment Connections55
Receiver Tests55
Sesitivity55
Receiver Desensitization Frequencies56
Supply Input Power57
Distortion at Rated Audio Power57
Squelch Function57
Transmitter Tests57
Selcall and DTMF Checks58
CTCSS Option Tes58
Aligning a Transceiver Using a Programmer59
Equipment and Set-Up59
Alignment Test Connections59
Starting the Alignment Option59
Transmitter Alignment60
Receiver Alignment60
Analogue Measure Calibration60
Print Alignment Params60
Screen Layout and Keys61
Programming Lead62
Test Procedure62
Parts List63
Notation63
Ordering of Spare Parts63
Abbreviations63
Antennae65
Pcb Rf65
Semiconductors and IC's65
Resistors66
Capacitors70
Inductors75
Miscellaneous77
PCB Assembly Control+Ctcss78
Accessories82
Programming Lead Assembly82
Control PCB Layout Diagram84
Tp320/585
Control PCB Display and Control System Circuit Diagram87
Control PCB Keypad and Audio Circuit Diagram90
Control PCB Signalling Options Circuit Diagram91
Control PCB Connectors Circuit Diagram94
Radio PCB, UHF Layout Diagram96
Radio PCB, VHF Layout Diagram99
Radio PCB, UHF Receiver Circuit Diagram102
Radio PCB, UHF Transmitter Circuit Diagram105
Radio PCB, UHF Frequency Generation Circuit Diagram108
Radio PCB, UHF IC1 and Supplies Circuit Diagram111
Radio PCB, VHF Receiver Circuit Diagram114
Radio PCB, VHF Transmitter Circuit Diagram117
Radio PCB, VHF Frequency Generation Circuit Diagram120
Radio PCD, VHF IC1 and Supplies123
Radio PCB Interconnection Circuit Diagram125
Battery Chargers126
PRX7001-Desk-Top Charger126
PRX7005-Multi-Unit Charger126
Multi-Unit Charger127
Specification127
Installation127
Multi-Unit Charger Wall Mounting Diagram128
Desk-Top Charger AC Wiring129
Multi-Unit Charger AC Wiring129
Transformer Primary Tappings130
Operation130
Transceiver with Battery130
Service130
Power Supply131
Fast Charge Current Source131
Sensing Circuits131
Charging132
Warning Lights132
Alignment Method132
Fast Charge Currents133
Special Tools Required134
Test Battery Circuit135
Test Battery Components135
Desk-Top Charger PCB Layout Diagram142
App A/2143
Desk-Top Charger PCB Main Pocket Circuit Diagram145
Desk-Top Charger PCB Secondary Pocket Circuit Diagram148
Desk-Top Charger PCB Power Supply and References Circuit Diagram149
Multi-Unit Charger PCB Power Supply and First Pocket Layout Diagram151
App A/1152
Multi-Unit Charger PCB Second and Third Pockets Layout Diagram153
Multi-Unit Charger PCB Fourth and Fifth Pockets Layout Diagram156
Multi-Unit Charger PCB Main Pocket Circuit Diagram160
Multi-Unit Charger PCB Secondary Pocket Circuit Diagram163
Loudspeaker/Microphone166
Circuit Diagram of Keypad Version166
Keypad Version Exploded View167
PRZ7002 Vehicle Charging Unit (VCU) for Standard and High Capacity Battery Packs169
Basic Fault Diagnosis170
VCU Circuit Diagram170
Use with Lightweight Battery Packs171
VCU Component Layout172
Factory Mutual Variants174
Factory Mutual Label174
Battery Pack174
Operating Precautions174
Transceiver Servicing177

Philips PRP73 - Transceiver Servicing

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