Sony HCD-GRX3 User Manual

HCD-GRX3/RX55/R300
US Model
Canadian Model
HCD-RX55
E Model
HCD-GRX3/R300
Australian Model
HCD-GRX3
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
HCD-GRX3/RX55/R300 are the tuner, deck,
CD and amplifier section in MHC-GRX3/
RX55/R300.
SPECIFICATIONS
Model Name Using Similar Mechanism HCD-G101
CD Mechanism Type CX3
Base Unit Type KSM-213BCM
Optical Pick-up Type KSS-213B/S-N
Model Name Using Similar Mechanism NEW
CWB44RR10
CD
SECTION
TAPE DECK
SECTION
Tape Transpor Mechanism Type
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-922-804-12
2001K1600-1
© 2001.11
AUDIO POWER SPECIFICATIONS:
(U.S.A. model only)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
with 6 Ω loads both channels driven, from 70 – 20,000 Hz; rated 35 W per
channel minimum RMS power, with no more than 0.9% total harmonic
distortion from 250 mW to rated output.
Amplifier section
North American model
Continuous RMS power output
50 W + 50 W (6 Ω at 1 kHz, 10% THD)
Other models
The following measured at AC 110, 220 V 60 Hz;
DIN power output (Rated) 35 W + 35 W (6 Ω at 1 kHz, DIN)
Continuous RMS power output (Reference)
45 W + 45W (6 Ω at 1 kHz, 10% THD)
The following measured at AC 120, 240 V 60 Hz;
DIN power output (Rated) 40 W + 40 W (6 Ω at 1 kHz, DIN)
Continuous RMS power output (Reference)
50 W + 50W (6 Ω at 1 kHz, 10% THD)
Peak music power output (Reference)
600 W
Inputs
MD IN (phone jacks) : voltage 450 mV, impedance 47 kΩ
Outputs
MD OUT (phone jacks) : voltage 250 mV, impedance 1 kΩ
PHONES (stereo phone jack) :
accepts headphones of 8 Ω or more
SPEAKER : accepts impedance of 6 to 16 Ω
CD player section
System Compact disc and digital audio system
Laser Semiconductor laser (λ = 780 nm)
Emission duration: continuous
Laser output Max. 44.6 µW*
*This output is the value measured at a
distance of 200 mm from the objective
lens surface on the Optical Pick-up Block
with 7 mm aperture.
Frequency response 20 Hz – 20 kHz (± 0.5 dB)
Wavelength 780 – 790 nm
DIGITAL OUT (OPTICAL)
(Square optical connector jack, rear panel)
Wavelength 600 nm
Output Level –18 dBm
Tape deck section
Recording system 4 -track 2 -channel stereo
Frequency response 40 – 13,000 Hz (± 3dB), using Sony
TYPE Ι cassette
photo : HCD-GRX3
— Continued on next page —
Ver 1.1 2001. 11

Sony HCD-GRX3 Specifications

General

Brand	Sony
Model	HCD-GRX3
Category	Stereo System
Language	English

Summary

Specifications

Audio Power Specifications

Details on power output, total harmonic distortion, and speaker impedance.

Servicing Notes

Notes on Handling the Optical Pick-up Block or Base Unit

Precautions for handling optical pick-up blocks and flexible boards during repair.

Notes on Laser Diode Emission Check

Guidelines for safely checking laser diode emission on the optical pick-up block.

Safety-Related Component Warning!!

Warning about critical safety components and replacement procedures.

Safety Check-out

Leakage

Procedure for checking AC leakage from exposed metal parts to ground.

Section 1 General

Location of Parts and Controls

Identification and layout of all buttons, knobs, and indicators on the front panel.

Section 2 Disassembly

2-1. Upper Cover and CD Door

Step-by-step guide for removing the upper cover and CD door.

2-2. Front Panel

Procedure for detaching and removing the front panel assembly.

2-3. Main Board

Steps to remove the main circuit board from the unit.

2-4. Amp Board

Instructions for accessing and removing the amplifier board.

2-5. CD Tray

Guide for disassembling the CD tray mechanism.

2-6. CD Decoder Board

Steps to remove the CD decoder circuit board.

2-7. Base Unit

Procedure for disassembling the base unit components.

2-8. Cassette Door

Instructions for removing the cassette door assembly.

Section 3 Mechanical Adjustments

Precaution

Safety and procedural precautions before performing mechanical adjustments.

Torque Measurement

Specifications and methods for measuring torque on various mechanical parts.

Section 4 Electrical Adjustments

Deck Section Adjustments

Adjustments related to the tape deck section, including azimuth and speed.

Tuner Section Adjustments

Procedures for tuning voltage and tracking adjustments for AM and FM reception.

CD Section Adjustments

Adjustments for CD playback, including RF level and focus bias.

Section 5 Diagrams

5-1. Circuit Boards Location

Visual guide showing the location of all circuit boards within the unit.

5-2. Block Diagrams

Functional block diagrams illustrating signal flow and system architecture.

Printed Wiring Board - CD Section

Printed wiring layout for the CD section of the unit.

5-5. Schematic Diagram - CD Section

Detailed schematic diagram of the CD section circuitry.

5-6. Schematic Diagram - Panel Section

Detailed schematic diagram of the panel section circuitry.

5-7. Printed Wiring Board - Panel Section

Printed wiring layout for the panel section of the unit.

Printed Wiring Board - Deck Section

Printed wiring layout for the deck section of the unit.

5-9. Schematic Diagram - Deck Section

Detailed schematic diagram of the deck section circuitry.

5-10. Schematic Diagram - Main Section

Detailed schematic diagram of the main section circuitry.

5-11. Printed Wiring Board - Main Section

Printed wiring layout for the main section of the unit.

5-12. Printed Wiring Board - Amp Section

Printed wiring layout for the amplifier section of the unit.

5-13. IC Pin Function

Pin assignments and descriptions for integrated circuits used in the unit.

Section 6 Exploded Views

6-1. Cabinet Section

Exploded view of the outer cabinet and main structural components.

6-2. Front Panel Section

Exploded view of the front panel assembly and its controls.

6-3. Cassette Mechanism Deck Section

Exploded view of the cassette mechanism deck and its parts.

6-4. CD Mechanism Deck Section 1

Exploded view of the CD mechanism deck section 1.

6-5. CD Mechanism Deck Section 2

Exploded view of the CD mechanism deck section 2.

6-6. Base Unit Section (KSM-213BCM)

Exploded view of the base unit section, including the KSM-213BCM.

Section 7 Electrical Parts List

Supplement-1

Addition of AR Model and Correction of HCD-R300 (Black Model)

Updates and corrections for specific models and parts lists.

Revision History