Sony HCD-GPX6 User Manual

SERVICE MANUAL
COMPACT DISC DECK RECEIVER
US Model
Australian Model
HCD-GPX6
AEP Model
HCD-GPX7
E Model
HCD-GPX6/GPX7
HCD-GPX6/GPX7
Ver 1.0 2004.04
9-877-742-01 Sony Corporation
2004D05-1 Home Audio Company
© 2004.04 Published by Sony Engineering Corporation
SPECIFICATIONS
HCD-GPX6/GPX7 are the amplifier, CD player,
tape deck and tuner section in CMT-GPX6/GPX7.
Model Name Using Similar Mechanism NEW
CD
CD Mechanism Type CDM80B-F1BD81
Section
Base Unit Name BU-F1BD81A
Optical Pick-up Block Name KSM-215DCP
Tape deck
Model Name Using Similar Mechanism NEW
Section
Tape Transport Mechanism Type CMAL1Z234A
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
(The United States model only)
With 6 ohm loads, both channels driven, from
120-10,000 Hz; rated 35 watts per channel minimum
RMS power, with no more than 10% total harmonic
dist ortion from 250 milliwatts to rated output.
Amplifier section
HCD-GPX7
DIN power output (rated): 40 + 40 W (6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference): 60 + 60 W
(6 ohms at 1 kHz, 10% THD)
Music power output (reference): 100 + 100 W
HCD-GPX6
North American model:
Continuous RMS power output (reference): 40 + 40 W
(6 ohms at 1 kHz, 10% THD)
Other models:
The following measured at AC 240 V, AC 220 V or AC 120 V
DIN power output (rated): 30 + 30 W (6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference): 35 + 35 W
(6 ohms at 1 kHz, 10% THD)
Inputs
MD/VIDEO: Sensitivity 450/250 mV, impedance
47 kilohms
Outputs
PHONES: Accepts headphones with an
impedance of 8 ohms or more
SPEAKER: Accepts impedance of 6 to 16 ohms.
CD player section
Laser Semiconductor laser (λ=780 nm)
Emission duration: continuous
Frequency response 20 Hz − 20 kHz
Wavelength 780 − 790 nm
Tape deck section
Recording system 4-track 2-channel, stereo
Frequency response 50 − 13,000 Hz (±3 dB), using
Sony TYPE I cassettes
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 − 108.0 MHz
Antenna FM lead antenna
Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
Pan-American model: 530 − 1,710 kHz
(with the tuning interval set at 10 kHz)
531 − 1,710 kHz
(with the tuning interval set at 9 kHz)
European model: 531 − 1,602 kHz
(with the tuning interval set at 9 kHz)
Other models: 530 − 1,710 kHz
(with the tuning interval set at 10 kHz)
531 − 1,602 kHz
(with the tuning interval set at 9 kHz)
Antenna AM loop antenna, external
antenna terminal
Intermediate frequency 450 kHz
General
Power requirements
North American model: 120 V AC, 60 Hz
European model: 230 V AC, 50/60 Hz
Korean model: 220 V AC, 60 Hz
Australian model: 230 − 240 V AC, 50/60 Hz
Other models: 110 − 120 V or 220 − 240 V
AC, 50/60 Hz
Adjustable with voltage
Power consumption
HCD-GPX7: 105 W
0.25 W (in Power Saving Mode)
HCD-GPX6: 80 W
Dimensions (w/h/d) Approx. 181.5 × 261.5 × 357.5 mm
incl. projecting parts and controls
Mass
HCD-GPX7: Approx. 6.3 kg
HCD-GPX6: Approx. 5.8 kg
Design and specifications are subject to change without notice.
Argentina model: 220 V AC, 50 Hz
Photo: HCD-GPX7

Sony HCD-GPX6 Specifications

General

Brand	Sony
Model	HCD-GPX6
Category	Stereo System
Language	English

Summary

Specifications

Audio Power Output

Details amplifier power output and total harmonic distortion specifications for various models.

Safety Precautions

Safety Check-Out Procedures

Details procedures for checking AC leakage and safety of exposed metal parts after service.

Component Handling and Repair Notes

Provides notes on handling chip components, flexible boards, and repair precautions.

Servicing Notes

Handling Optical Pick-Up and Base Unit

Advises on handling the optical pick-up block and base unit to prevent damage from static electricity.

Laser Diode Emission and Focus Check

Describes methods for checking laser diode emission and focus search operation using an S-curve.

Disassembly

Disassembly Flow

Presents a flowchart detailing the sequence of disassembly procedures for the unit.

Side Plate and Top Block Removal

Details the removal process for the side plates (L/R) and the top block assembly.

Tape Mechanism and Front Panel Removal

Details the removal process for the tape mechanism deck and the front panel section.

Main Board and CD Mechanism Removal

Details the removal process for the main board and the CD mechanism deck block.

Base Unit and Motor Gear Assy Removal

Optical Pick-up and Chassis Removal

Test Modes

MC Cold Reset Procedure

Details the procedure to perform an MC cold reset, clearing all stored data and returning to initial conditions.

Common Test Mode Operations

Explains how to enter and operate the common test mode for AMP and tape section tests.

Panel Test Mode and Version Check

Describes how to enter panel test mode and perform version checks on system modules.

Panel Test Mode Key Check

CD Specific Test Modes

Electrical Adjustments

Deck Section Adjustments

Details the procedure for REC BIAS adjustment for the deck section, including measurement points.

CD Section Checks

Describes checks for CD section, including S-curve symmetry and RFAC level verification.

Diagrams

CD Servo Block Diagram

Illustrates the block diagram for the CD servo section, showing signal flow and components.

Main Section Block Diagram

Illustrates the block diagram for the main section, covering audio, tuner, and tape paths.

Panel and Power Supply Block Diagram

Illustrates the block diagram for the panel and power supply sections, including control and power distribution.

CD Board Printed Wiring Diagram

CD Board Schematic Diagram

Driver Board Printed Wiring Diagram

Driver Board Schematic and Waveforms

Main Board Printed Wiring Diagram

Main Board Schematic Diagram (1/3)

Main Board Schematic Diagram (2/3)

Main Board Schematic Diagram (3/3)

AMP Board Printed Wiring Diagram

AMP Board Schematic Diagram

Panel (1) Board Printed Wiring Diagram

Panel (1) Board Schematic Diagram

Panel (2) Board Printed Wiring Diagram

Panel (2) Board Schematic Diagram

Power Board Printed Wiring Diagram

Power Board Schematic Diagram

Exploded Views

Side Plates Section

Presents an exploded view of the unit's side plates and related components.

Front Panel Section

Presents an exploded view of the unit's front panel and associated controls.

Top Block Section

Presents an exploded view of the unit's top block assembly, including the cassette holder.

Main Section

Presents an exploded view of the main section of the unit, including the CD mechanism.

Chassis Section

Presents an exploded view of the unit's chassis and power components like transformers and fuses.

CD Mechanism Deck Section-1

CD Mechanism Deck Section-2

CD Mechanism Deck Section-3

CD Mechanism Deck Section-4

Base Unit Section

Electrical Parts List

AMP Board Parts

Lists all components and their part numbers for the AMP board.