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Sony HCD-EC68 Service Manual

Sony HCD-EC68
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49
HCD-EC68/EC78
251 1-797-193-12 MECHANICAL, CD (DLM3A)
252 2-632-062-11 BELT (DLM3A)
253 4-227-045-31 SPRING (INSULATOR), COIL
254 4-227-549-31 INSULATOR
255 4-985-672-01 SCREW (+PTPWHM2.6), FLOATING
0 256 A-4735-357-A BASE ASSY, OP (KSM-213D)
257 1-832-404-21 CABLE, FLEXIBLE FLAT (16 CORE)
258 A-1217-914-A CD BOARD, COMPLETE
S201 1-771-853-11 SWITCH, DETECTION (LIMIT)
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
8-6. CD MECHANISM SECTION
(CDM88A-K6BD90-WOD)
256
(including sled motor (M402),
spindle motor (M401))
257
258
S201
sled motor (M402)
spindle motor (M401)
253
253
254
254
254
254
252
252
255
255
251
not supplied
not supplied
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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Sony HCD-EC68 Specifications

General IconGeneral
TypeMini Hi-Fi System
CD PlayerYes
CD ChangerNo
Tuner BandsFM/AM
USB PlaybackYes
Remote ControlYes
Speakers2
Weight (Main Unit)3.5 kg
BluetoothNo
Speaker Size10 cm
Weight (Speaker)2.5 kg

Summary

Service Manual Overview and Specifications

General System Specifications

Technical specifications for the HCD-EC68/EC78 audio system.

Amplifier Power Output

Details on power output ratings for various models and regions.

CD Player and Tuner Specifications

Specifications for the CD player and tuner sections.

Tape Deck Specifications

Details for the tape deck recording system.

Servicing, Disassembly, and Test Modes

Servicing Notes and Precautions

Important notes and precautions for servicing the unit.

Unit Disassembly Procedures

Detailed steps and flow for disassembling the unit.

Test Modes Overview

Various test modes for checking unit functions and performance.

Component Handling and Precautions

Optical Pickup and Laser Diode Handling

Precautions for handling the optical pickup block and laser diode safely.

Unleaded Solder Information

Information and characteristics of unleaded solder.

Disc Tray Lock Release

Procedure to release the disc tray lock mechanism.

Unit Maintenance Procedures

Opening the Disc Tray (Power Off)

Procedure to open the CD tray when the unit is off.

Removing the Volume Knob

Procedure for removing the volume knob.

Safety and Component Identification

Capacitor Discharge for Safety

Procedure to discharge capacitors on the main board for safety.

Tape Mechanism Deck Identification

Guide to differentiate between two types of tape mechanism decks.

Basic Unit Operations

Source Selection, Sound, and Playback

How to select sources, adjust sound, and play CDs/MP3s.

Initial Setup and Clock Setting

Initial setup instructions, including remote and clock settings.

Radio and Tape Playback

Guides for listening to radio and playing cassette tapes.

Display Information

How to change the information displayed on the system.

Advanced Operations and Timers

CD Programming and Tape Recording

How to create custom CD playback and record audio to tape.

Timer Functions

Explanation of the Sleep Timer and Play Timer functions.

Radio Station Presets

How to store and recall favorite radio stations.

Adjustments and Diagrams

Mechanical Adjustments

Procedures for adjusting mechanical parts like torque and tension.

Electrical Adjustments

Procedures for adjusting electrical components and heads.

Tuner Section Adjustments

Procedures for adjusting the tuner section's frequency and tracking.

Circuit Diagrams and Component Information

Diagram Interpretation Notes

Notes on interpreting printed wiring board and schematic diagrams.

Circuit Diagrams and Layouts

Circuit diagrams and printed wiring board layouts for all sections.

Integrated Circuit (IC) Details

IC Block Diagrams

Block diagrams illustrating the function of key ICs.

IC Pin Function Descriptions

CD Board IC Pin Descriptions

Detailed pin functions for ICs on the CD board.

Panel Board IC Pin Descriptions

Panel Board IC301 Pinout

Pin description for IC301 on the Panel Board.

Other IC Pin Descriptions

IC601 Pin Description

Pin description for IC601.

Component Identification and Assembly

Exploded Views of Unit Sections

Visual breakdown of unit parts for identification and replacement.

Panel Section Exploded View

Exploded view of the panel section and its components.

Tape Deck Section Exploded View

Exploded view of the tape deck section.

Front Panel Section Exploded View

Exploded view of the front panel section.

Chassis and Main Section Exploded Views

Exploded views of the chassis and main sections.

CD Mechanism Section Exploded View

Exploded view of the CD mechanism section.

Electrical Parts List

Component Lists

Lists of capacitors, resistors, semiconductors, connectors, and ICs.

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