Sony HCD-GRX20 User Manual

HCD-GRX20/RXD3
AEP Model
UK Model
HCD-RXD3
E Model
Australian Model
HCD-GRX20
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
— Continued on next page —
SPECIFICATIONS
Model Name Using Similar Mechanism NEW
CD Mechanism Type CX3
Base Unit Type KSM-213ECM
Optical Pick-up Type KSS-213ECM/C2NP
Model Name Using Similar Mechanism NEW
Tape Transport Mechanism Type CWL-44-FR
CD
SECTION
TAPE
DECK
SECTION
HCD-GRX20/RXD3 are the tuner, deck, CD
and amplifier section in MHC-GRX20/RXD3.
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-928-949-13
2003E16-1
© 2003.05
PHOTO : HCD-RXD3
Amplifier section
European model
DIN power output (Rated) 40 W + 40 W
(6 Ω at 1 kHz, DIN)
Continuous RMS power output (Reference)
50 W + 50 W
(6 Ω at 1 kHz, 10%
THD)
Music power output (Reference)
100 W + 100 W
(6 Ω at 1 kHz, 10%
THD)
Other models
The following measured at AC 110, 220 V 60 Hz;
DIN power output (Rated) 45 W + 45 W
(6 Ω at 1 kHz, DIN)
Continuous RMS power output (Reference)
50 W + 50 W
(6 Ω at 1 kHz, 10%
THD)
The following measured at AC 120, 240 V 60 Hz;
DIN power output (Rated) 50 W + 50 W
(6 Ω at 1 kHz, DIN)
Continuous RMS power output (Reference)
60 W + 60 W
(6 Ω at 1 kHz, 10%
THD)
Inputs
MD IN (phono jack): voltage 450 mV,
impedance 47 kΩ
Outputs
MD OUT (phono 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. 44.6µW*
*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 20Hz – 20kHz (±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 (±3 dB),
using Sony TYPE I
cassette
Wow and flutter ±0.15% W. Peak(IEC)
0.1% W. RMS(NAB)
±0.2% W. Peak(DIN)
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tunr section
Tuning range 87.5 – 108.0 MHz
Antenna FM lead antenna
Antenna terminals 75 Ω unbalanced
Intermediate frequency 10.7 MHz
Ver 1.2 2003. 05

Sony HCD-GRX20 Specifications

General

Type	Mini Hi-Fi Component System
CD Player	Yes
Cassette Deck	Yes
Remote Control	Yes
Power Output	100 W (RMS)
Tuner	AM/FM
Speakers	2-way speaker system
Inputs	Audio In
Outputs	Headphone Out

Summary

SECTION 1 GENERAL

SECTION 2 DISASSEMBLY

2-1. CD DOOR

Procedure for removing the CD door.

2-2. FRONT PANEL

Procedure for removing the front panel assembly.

2-3. MAIN BOARD

Procedure for removing the main board.

2-4. AMPLIFIER BOARD

Procedure for removing the amplifier board.

2-5. CD TRAY

Procedure for removing the CD tray.

2-6. DECORD BOARD

Procedure for removing the CD decode board.

2-7. BASE UNIT

Procedure for removing the base unit.

2-8. CASSETTE LID

Procedure for removing the cassette lid.

SECTION 3 TEST MODE

SECTION 4 MECHANICAL ADJUSTMENTS

Torque Measurement

Procedures and specifications for measuring torque.

SECTION 5 ELECTRICAL ADJUSTMENTS

Record/Playback Head Azimuth Adjustment

Procedure for adjusting the record/playback head azimuth.

Tape Speed Adjustment

Procedure for adjusting the tape speed on the deck.

SECTION 6 DIAGRAMS

CIRCUIT BOARDS LOCATION

Diagram showing the location of all circuit boards.

BLOCK DIAGRAMS

Block diagram of the main section and its components.

SCHEMATIC DIAGRAM (MAIN)

Schematic diagram of the main section (part 1/3).

IC PIN FUNCTION

Pin functions for key ICs used in the system.

SECTION 7 EXPLODED VIEWS

7-1. CABINET SECTION

Exploded view of the cabinet and main chassis parts.

7-2. FRONT PANEL SECTION

Exploded view of the front panel assembly and its parts.

7-3. CD MECHANISM DECK SECTION-1

Exploded view of the CD mechanism deck (part 1).

7-4. CD MECHANISM DECK SECTION-2

Exploded view of the CD mechanism deck (part 2).

7-5. BASE UNIT SECTION (KSM-213ECM)

Exploded view of the base unit mechanism.

SECTION 8 ELECTRICAL PARTS LIST