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Panasonic RX-ED77 Service Manual

Panasonic RX-ED77
44 pages
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Panasonic RX-ED77 Specifications

General IconGeneral
TunerFM/AM
BluetoothNo
TypeStereo System
Speaker Type2-Way Speakers
CD PlayerYes
Cassette DeckDual
InputsAUX
OutputsHeadphone
Power Output40W Total Power (20W x 2)

Summary

Handling Precautions for Traverse Deck

Handling of Traverse Deck (Optical Pickup)

Precautions for safely handling the optical pickup to prevent static discharge damage.

Grounding for Electrostatic Breakdown Prevention

Procedures for grounding human body and work surfaces to prevent static discharge.

Precaution of Laser Diode

Use of Caution Labels

Identifies and explains the caution labels related to laser product safety.

Caution for AC Mains Lead

How to Replace the Fuse

Step-by-step guide for replacing the fuse in the AC mains plug.

Self Diagnostic Function

Display Procedure

Outlines the display sequence and methods for entering the self-diagnostic mode.

Symptom or Condition and Correction

Lists diagnostic codes, symptoms, and corresponding causes/corrections.

Operation Checks and Main Component Replacement Procedures

Checking Procedures for Major P.C.B.s

Step-by-step guides for checking the operation of different printed circuit boards.

Main Component Replacement Procedures

Instructions for replacing key components like the motor assembly and traverse deck.

Schematic Diagram

Servo Circuit

LCD Circuit

Main Circuit

Mechanism Circuits

Control and Motor Circuits

Additional Circuit Diagrams

Power Supply and Tuner

Wiring Connection Diagram

Troubleshooting Guide

No CD Playback Troubleshooting

Flowchart for diagnosing and resolving issues related to CD playback.

General Troubleshooting Flow

A diagnostic flowchart to identify and resolve various operational faults.

Measurements And Adjustments

Tuner Section Alignments

Procedures for aligning the LW-RF and MW-RF tuning circuits for optimal reception.

Cassette Deck Alignments

Procedures for aligning head azimuth and tape speed for cassette playback.

Alignment Points and Component Guides

IC Terminal Functions

IC702 Terminal Functions

Detailed pin functions and descriptions for the IC702 servo processor.

More IC Terminal Functions

IC801 Terminal Functions

Pinout details and functions for the IC801 system microprocessor.

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