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Shure PG4 Service Manual

Name: Shure PG4
Brand: Shure
Rating: 4 (1 reviews)

35 pages

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25A1104 (Rev.1)

PCB LAYOUT

DGND

+3.3V

TPR

VREF

TP RSSI - A2D

TP5V

TP9V

TP600

TP750

TPI

5VPLU

TP3

TP2

TPN

Product Description1
Features1
Detailed Description2
Product View2
Circuit Description3
General Block Diagram Description3
RF Strip3
The First, the Second Vco's and PLL4
DC Power Supply Section4
Audio Section4
RF and Audio Block Diagram5
Digital Section6
Display Circuitry6
Normal Mode6
ATE Mode6
RF Band Resistors7
Variant Resistor Installation Options for each Band - Table7
Reference Designators and How the Voltages at the Test Points Reflect the Operating RF Band - Table7
Microcontroller Netnames and Programming Testpoint List8
PG4 RSSI Curve9
Functional Test11
General Information Lookup Table11
Required Test Equipment (or Approved Equivalent or Superior Models)11
Listening Test11
Tone Key Indicator12
Audio Output Level and Distortion12
Frequency Response Using an RF Generator12
RF Power and Squelch Level12
Assembly and Disassembly13
Assembly Instructions (Reverse for Disassembly)13
Service Procedures15
Measurement Reference15
Required Test Equipment15
Alignment and Measurement Procedure16
Voltage Regulation Check16
ATE Mode Setup and Use16
Initial Setup16
Power Test Section17
1St, 2Nd Local Oscillator17
Front End RF Filters17
Predictive Diversity Threshold Setting17
Tonekey Level Detection18
Noise Squelch Alignment18
Audio Alignment18
Audio Peak Light Reference Setting Procedure18
Additional Product Performance Characteristics (Not Tested in Production)20
Frequency Tables21
Product Specifications22
Troubleshooting23
Replacement Parts28
Parts Designations28
PG4 Model Variation - Table28
Antenna Parts Numbers28
PG4 Hardware Replacement Part29
PG4 PCB Replacement Components29
PG4 Frequency Dependent Parts30
Unplaced Component List31
PCB Layout32
Schematic Diagram34

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Shure PG4 Specifications

General

Brand	Shure
Model	PG4
Category	Receiver
Language	English

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