Table Of Contents - Realistic TRC-449 Service Manual

Table of Contents

Table Of Contents2
Specifications3
General3
Measurement Condition3
Disassembly Instructions6
To Remove Top & Bottom Cover6
To Remove Front Panel6
Block Diagram7
Alignment Instructions8
Chassis Layout8
Alignment Points8
Alignment Of Pll And Carrier Oscillator9
Test Equipment Required9
Pll And Carrier Oscillator Test Equipment Setup9
Pll Circuit Description10
Wave Form Of Ic710
Pll Local Oscillator11
Channel Selection Program11
Transmitting Frequency Calculation11
Frequency Chart12
Audio Limiter And Automatic Modulation Control13
Audio Limiter13
Automatic Modulation Control13
Automatic Limiter Circuit13
N.b. Agc Circuit14
Noise Blanker Circuit14
Noise Amplifier Circuit14
Alignment Of Transmitter Section15
Transmitter Test Equipments Setup15
Receiver Test Equipment Setup16
Troubleshooting Hints17
Unit Will Not Turn On17
No Receive Sound17
No Noise17
No Transmission18
No Am Modulation18
No Noise Blanker Operates18
No Led Channel Indicator Lights18
Pll Ci Rcuit Troubleshooting Hints19
Ic Transistor & Diode Lead Identifications20
Ic & Compound Parts Internal Diagrams21
Channel Switch P.c. Board (Flexible)22
Noise Blanker P.c. Board22
Speaker Jack P.c. Board (Top & Bottom)22
Main P.c. Board (Top View)23
Main P.c. Board (Bottom View)24
Additional Parts On The Bottom25
Wiring Diagram26
Electrical Parts List29
Mechanical Parts List43