Sony HCD-GR7 User Manual

SERVICE MANUAL
COMPACT DISC DECK RECEIVER
Ver 1.1 2002.11
9-960-853-12 Sony Corporation
2002K0500-1 Home Audio Company
C 2002.11 Published by Sony Engineering Corporation
US Model
HCD-D60/RX70
Canadian Model
AEP Model
UK Model
HCD-RX70
E Model
HCD-GR7/GR7J
Australian Model
HCD-GR7
HCD-D60/GR7/GR7J/RX70
— Continued on next page
—
HCD-D60/ GR7/GR7J/RX70 is the
tuner, deck, CD and amplifier section in
MHC-D60/ GR7/GR7J/RX70.
Model Name Using Similar Mechanism NEW
CD Mechanism Type CDM38-5BD29AL
Base Unit Name BU-5BD29AL
Optical Pick-up Name KSS-213D/Q-NP
Model Name Using Similar Mechanism HCD-H881
Tape Transport Mechanism Type TCM-220WR2
CD
Section
Tape deck
Section
SPECIFICATIONS
* Dolby noise reduction manufacrured
under license from Dolby Laboratories
Licensing corporation.
"DOLBY" and the double-D symbol a
are trademarks of Dolby Laboratories
Licensing Corporation.
CD player section
System Compact disc and digital audio
system
Laser Semiconductor laser
(λ=780nm)
Emission duration: continuous
Laser output Max. 44.6 µW*
*This output is the value mea-
sured at a distance of 200 mm
from the objective lens surface
on the Optical Pick-up Block
with 7 mm aperture.
Frequency response 2 Hz - 20 kHz (±0.5 dB)
Wavelength 780-790 nm
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
CD OPTICAL DIGITAL OUT
(Square optical connector jack, rear panel)
(Except US model)
Wavelength 600 nm
Output Level –18 dBm
For the US model
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
With 8 ohm loads, both channels driven, from
70-20,000 Hz; rated 100 watts per channel
minimum RMS power, with no more than
0.9% total harmonic distortion from 250
milliwatts to rated output.
Amplifier section
Continuous RMS power output
Canadian model
100+100 watts
(8 ohms at 1 kHz, 5% THD)
AEP, German, East European, UK and CIS models
55+55 watts
(6 ohms at 1 kHz, 10% THD)
Other models 70+70 watts
(6 ohm sat 1 kHz, 10% THD)
Peak music power output (GR7/GR7J) :
1000 watts
Music power output
(AEP, German, East European, UK and CIS model):
95+95 watts
(6 ohms at 1kHz, 10% THD)
Inputs VIDEO/MD IN (phono jacks) :
voltage 250 mV,impedance 47
kilo ohms
MIX MIC (phone jack):
sensitivity 1 mV,
impedance 10 kilo ohms
Outputs VIDEO/MD OUT (phono jacks)
: voltage 250 mV impedance
1 kilo ohms
PHONES (stereo phone jack) :
accepts headphones of 8 ohms or
more.
SPEAKER : accepts impedance of
8 to 16 ohms (D60/RX70)
accepts impedance of 6 to 16 ohms
(GR7/GR7J)
SURROUND SPEAKER
(US and Canadian models):
accepts impedance of 16 ohms.
SUPER WOOFER (GR7/GR7J/
RX70 : US and Canadian models):
Voltage 1 V, impedance 1 kilo ohm
Photo: HCD-RX70

Sony HCD-GR7 Specifications

General

Type	Stereo System
Power Output	100 W
CD Player	Yes
Cassette Deck	Yes
Bluetooth	No
USB Port	No
CD Player Type	Single Disc
Audio Output	Stereo
Total Power Output	100 W
Remote Control	Yes
Tuner	AM/FM
Functions	CD, Tuner, Cassette
Tuner Bands	AM/FM
Speakers	2

Summary

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS

Details audio output power and harmonic distortion for various loads.

CD player section

Provides technical specifications for the CD player, including laser details.

Inputs

Lists input types, voltage, and impedance for audio and microphone inputs.

SAFETY CHECK-OUT

LEAKAGE TEST

Describes procedures and limits for checking AC leakage current from metal parts.

SECTION 2 DISASSEMBLY

Unit Components Disassembly

Details disassembly of major sections like Case, Front Panel, CD/Tape mechanisms, Base Unit.

SECTION 3 TEST MODE

[MC Cold Reset]

Clears all preset data to initial conditions for customer return.

[Aging Mode]

Checks operation of CD and tape deck sections by running automated sequences.

SECTION 4 MECHANISM ADJUSTMENTS

Torque Measurement

Provides values for torque measurements in forward, reverse, and rewind modes.

Tape Tension Measurement

Lists required meter readings for tape tension measurements in forward and reverse.

SECTION 5 ELECTRICAL ADJUSTMENTS

Record/Playback Head Azimuth Adjustment

Details the procedure for adjusting head azimuth for proper playback.

Tape Speed Adjustment DECK A

Explains how to adjust tape speed using a frequency counter and test tape.

TUNER SECTION

AM Section Adjustment

Describes the adjustment of the AM tuned level and subcarrier parameters.

FM Section Adjustment

Details the process for adjusting FM tuned level and polar adjustment.

SECTION 6 DIAGRAMS

Tuner Section Diagrams

Includes printed wiring and schematic diagrams for the tuner.

CD Section Diagrams

Includes printed wiring and schematic diagrams for the CD section.

IC Pin Function Description

Lists pin functions for key integrated circuits used in the system.

SECTION 7 EXPLODED VIEWS

Main Unit Exploded Views

Exploded views of Case, Front Panel, Chassis, Base Unit, and Tape Mechanism.

SECTION 8 ELECTRICAL PARTS LIST

Audio & BD Components

Lists electrical components for audio and BD boards.

TCB Board Components

Lists electrical components for the TCB board.

SUPPLEMENT-1

1. CORRECTION

Details corrections to the main service manual, specifically for the front panel.

2. ELECTRICAL ADJUSTMENT

Provides specific FM polar adjustment procedures for Eastern European and CIS models.

Repair Procedure(1)

1) CD

Provides a flowchart for diagnosing CD playback issues and recommended part replacements.

DISASSEMBLY ( Tree )

Unit Disassembly Flow

Shows a hierarchical breakdown of the unit's disassembly steps.

REVISION HISTORY