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Sony HCD-VR70 User Manual

Sony HCD-VR70
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HCD-VR50/VR70
E Model
SPECIFICATIONS
COMPACT DISC DECK RECEIVER
— Continued on next page —
Model Name Using Similar Mechanism HCD-DR7AV/XB800AV
CD Mechanism Type CDM37L-5BD34L
Base Unit Type BU-5BD34L
Optical Pick-up Type KSS-213D/Q-NP
Model Name Using Similar Mechanism HCD-DR7AV/XB800AV
Tape Transport Mechanism Type TCM-230AWR2/230PWR2
CD
SECTION
TAPE DECK
SECTION
MICROFILM
SERVICE MANUAL
HCD-VR50/VR70 is the tuner, deck, CD and
amplifier section in LBT-VR50/VR70.
Photo: HCD-VR50
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

Table of Contents

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Sony HCD-VR70 Specifications

General IconGeneral
Audio Channels2.0
CD PlayerYes
BluetoothNo
USB PortNo
USB PlaybackNo
Remote ControlYes
Speaker Type2-way bass reflex
Tuner BandsFM/AM
Cassette DeckYes
Speaker Size12 cm

Summary

Servicing Notes

Service Procedures

Covers CD-TEXT display, resets, modes, AM tuner steps, and key check.

Test Modes

Details AMS test mode and self-diagnosis function for decoder sections.

General Information

System Specifications

Covers tape, tuner, general specs, model ID, and safety warnings.

Part Identification

Shows back panel layout and identifies critical safety components.

Location of Parts and Controls

Front Panel Control Guide

Instructions for setting the clock and timer functions via front controls.

Disassembly Procedures

Component Disassembly Procedures

Steps for disassembling the front panel and main board.

Mechanism and Board Removal

Procedures for removing sub panel, CD boards, tape mechanism, and base unit.

Disc Table Installation

Procedure for installing and adjusting the disc table.

Test Mode Operations

Video CD Signal Testing

Mode for checking color-bars and sound signals for video CD playback.

Adjustments

Mechanical Adjustments

Precautions, torque measurement, head azimuth, tape speed, bias, record level adjustments.

Electrical Adjustments

Deck section adjustments, including playback and record level calibration.

Diagrams and Schematics

Circuit Board Locations

Diagram showing the location of various circuit boards within the unit.

Block Diagrams

Block diagram of the BD section illustrating signal flow.

Section Schematics

Schematics for Deck, Main, Video, Power, and Display sections.

Component Schematics

Schematics for Panel VR, TC Panel, and CD Panel sections.

IC Pin Functions and Diagrams

Block diagrams and pin functions for key ICs like CXD3008Q and M30622MA.

Exploded Views

Chassis and Panel Assemblies

Exploded views of the unit's case, back panel, front panel, and chassis.

Mechanism Assemblies

Exploded views of the TC mechanism (sections 1 & 2) and CD mechanism.

Base Unit Assembly

Exploded view of the base unit assembly (BU-5BD34L).

Electrical Parts List

Component Listings

Comprehensive list of electrical components categorized by board and type.

Accessories and Packing Materials

Hardware List

List of hardware components, screws, and manual part numbers.

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