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Sanyo GCD 2700 User Manual

Sanyo GCD 2700
54 pages
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Service Manual
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I FILE NO.
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CD Changer stereo
Music System
GCD 2700 (AU)
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CONTENTS
SPECIFICATIONS . . . . . . . ..’...... ..’ . . . . . 1
LASER BEAM INFORMATION . . . . . . . . . . . . . 1
OPERATING THE RESET SWITCH . . . . . . . . . 2
COOPERATION . . . . . . . . . . . . . . . . . . . . . . . 2
REMOVAL AND INSTALLATION . . . . . . . . . . . 5
TUNER ADJUSTMENTS . . . . . . . . . . . . . . . . . 7
TAPE DECK ADJUSTMENTS . . . . . . . . . . . . . 9
ILLUSTRATION OF CD CHANGER MOVEMENT 12
CD PLAYER’S SERVICE MODE . . . . . . . . . . . . 15
ADJUSTMENTS . . . . . . . . . . . . . 19
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PRODUCT CODE No.
129 390 02
EXPLODEDVIEW . . . . . . . . . . . . . . . . ...’... 23
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . 26
INTERCONNECT DIAGRAM . . . . . . . . . . . . . . 37
IC BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . 38
LCD DESCRIPTION . . . . . . . . . . . . . . . . . . . . 41
SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . 42
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . 44
IC DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . 52
lC& TRANSISTOR VOLTAGES . . . . . . . . . . . . 70
REFERENCE No. SM 580050
I
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Sanyo GCD 2700 Specifications

General IconGeneral
CD PlayerYes
Tape PlayerYes
Cassette DeckDouble Cassette Deck
Remote ControlYes
Tuner BandsFM
Speakers2 Speakers
TypeMini Hi-Fi System

Summary

SPECIFICATIONS

LASER BEAM INFORMATION

Details about laser safety and output for CD player.

OPERATING THE RESET SWITCH

CD OPERATION

PROGRAMMED PLAY

How to program up to 32 selections from multiple discs for playback.

EDIT RECORDING

Operations for selecting and recording CD tracks onto tape.

Fade-out Edit Recording

How to fade out sound automatically at the end of tape sides.

Backward Skip Edit Recording

How to record tracks with backward skip function.

MANUAL RECORDING

Basic procedure for recording CD material to tape.

REMOVAL AND INSTALLATION

FRONT PANEL ASSEMBLY REMOVAL

Procedures for removing the front panel assembly and its buttons.

TAPE MECHANISM & P.C.BOARD REMOVAL

Steps to remove the tape deck mechanism and its associated P.C. board.

COMPONENT INSTALLATION AND WIRING

Guidance on installing power cord, amp PCB, and power transformer.

TUNER ADJUSTMENTS

FM ADJUSTMENT

Procedures for adjusting FM band reception and tuning.

AM BAND ADJUSTMENT

Procedures for checking and adjusting the AM band reception.

TAPE DECK ADJUSTMENTS

MECHANISM TORQUE CHECK

Procedures for checking mechanism torques in the tape deck.

MOTOR SPEED ADJUSTMENT

Steps for motor replacement and speed adjustments for tape decks.

AMPLIFIER ADJUSTMENTS

Playback Output Adjustment

Adjusting playback output levels for TAPE A and TAPE B.

Recording/Playback Gain Adjustment

Adjusting recording and playback gain levels.

Frequency Response Adjustment

Adjusting frequency response for recording and playback.

CD CHANGER MOVEMENT ILLUSTRATION

CD Changer Operation

Describes the sequence of operations for the CD changer mechanism.

Major Parts Identification

Identifies and explains the function of key parts of the CD changer.

CD PLAYER SERVICE MODE

LCD Display Indicators

Explains LCD indicators when service mode keys are pressed.

LCD PCB Mounting Check

Verifies LCD PCB mounting by checking segment activation.

Operation Check via LCD Display

Checks CD player operations using LCD number display for error codes.

Tracking Balance Adjustment (Service Mode)

Adjusts tracking balance using the service mode.

CD PLAYER ADJUSTMENTS

Pickup Replacement and Lubrication

Procedures for replacing the pickup and lubricating the CD mechanism.

CD Changer Lubrication and Adjustment

Details lubrication and replacement steps for the CD changer mechanism.

Tracking Balance Adjustment

Adjusts tracking balance using test disc and oscilloscope.

Focus Gain Check

Checks the focus gain using test signals and oscilloscope.

Tracking Gain Check

Checks the tracking gain using test signals and oscilloscope.

Eye Pattern Check

Checks the eye pattern waveform for optimal CD playback.

EXPLODED VIEWS AND PARTS LIST

Exploded Views

Visual breakdowns of the unit's mechanical components.

Parts List

Comprehensive list of all parts with reference numbers and descriptions.

CIRCUIT DIAGRAMS AND DESCRIPTIONS

IC Block Diagrams

Illustrates the functional blocks of key integrated circuits.

Schematic Diagrams

Detailed circuit diagrams for different sections (Tuner, Amp, Tape, CD).

Wiring Diagrams

Shows interconnections between PCBs and components.

IC and Transistor Voltages

Lists voltage measurements for ICs and transistors for diagnostics.

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