Sony HCD-RG20 Service Manual

HCD-DX10/RG4SR/RG20/RG30T
US Model
HCD-RG4SR/RG20/RG30T
Canadian Model
HCD-RG20/RG30T
AEP Model
UK Model
HCD-RG20
E Model
Australian Model
HCD-DX10
SERVICE MANUAL
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-873-225-03
2003K16-1
© 2003.11
SPECIFICATIONS
Ver 1.2 2003. 11
Photo : HCD-DX10
• HCD-DX10/RG4SR/RG20/RG30T is the
tuner, deck, CD and amplifier section in
MHC-DX10/RG4SR/RG20/RG30T.
Model Name Using Similar Mechanism NEW
CD
CD Mechanism Type CDM58F-K6
Section
Optical Pick-up Name KSM-213D
Tape deck Model Name Using Similar Mechanism NEW
Section Tape Transport Mechanism Type CWL44FF29
Amplifier section
Canadian models:
HCD-RG30T
Continuous RMS power output (reference)
75 + 75 watts (6 ohms at 1
kHz, 10% THD)
Total harmonic distortion less than 0.07%
(6 ohms at 1 kHz, 50 W)
HCD-RG20
Continuous RMS power output (reference)
60 + 60 watts (6 ohms at 1
kHz, 10% THD)
Total harmonic distortion less than 0.07%
(6 ohms at 1 kHz, 30 W)
European model:
HCD-RG20
DIN power output (rated) 40 + 40 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
50 + 50 watts (6 ohms at 1
kHz, 10% THD)
Music power output (reference)
95 + 95 watts (6 ohms
at 1 kHz, 10% THD)
Other model:
HCD-DX10
The following measured at AC 120, 220, 240 V
50/60 Hz
DIN power output (rated) 40 + 40 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
50 + 50 watts (6 ohms at 1
kHz, 10% THD)
Inputs
GAME (AUDIO) IN (phono jack):
voltage 450 mV,
impedance 47 kilohms
Outputs
PHONES (stereo mini jack):
accepts headphones of
8 ohms or more
Front speaker: accepts impedance of 6 to
16 ohms
Surround speaker (HCD-RG4SR only):
accepts impedance of 6 to
16 ohms
CD player section
System Compact disc and digital
audio system
Laser Semiconductor laser
(λ=780 nm)
Emission duration:
continuous
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
Tape deck section
Recording system 4-track 2-channel stereo
Frequency response 40 – 13,000 Hz (±3 dB),
using Sony TYPE I
cassette
AUDIO POWER SPECIFICATIONS:
(HCD-RG4SR USA model only)
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
with 6 ohm loads both channels driven, from
120 – 10,000 Hz; rates 100 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
Total harmonic distortion less than 0.07%
(6 ohms at 1 kHz, 50 W)
(HCD-RG30T USA model only)
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
with 6 ohm loads both channels driven, from
120 – 10,000 Hz; rates 75 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
Total harmonic distortion less than 0.07%
(6 ohms at 1 kHz, 30 W)
(HCD-RG20 USA model only)
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
with 6 ohm loads both channels driven, from
120 – 10,000 Hz; rates 60 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
Total harmonic distortion less than 0.07%
(6 ohms at 1 kHz, 30 W)
MINI HIFI COMPONENT SYSTEM
— Continued on next page —

Sony HCD-RG20 Specifications

General

Brand	Sony
Model	HCD-RG20
Category	Stereo System
Language	English

Summary

SERVICE MANUAL

AUDIO POWER SPECIFICATIONS

Power output and total harmonic distortion for USA models.

SPECIFICATIONS

Technical specifications for amplifier, CD player, and tape deck sections.

SAFETY CHECK-OUT

LEAKAGE

AC leakage limits and measurement methods for safety.

SAFETY-RELATED COMPONENT WARNING!!

Critical components warning for safe operation.

SECTION 1 GENERAL

BUTTON DESCRIPTIONS

Explains the function of various buttons on the main unit.

Remote Control

Details the functions and operation of the remote control unit.

Setting the time

Step-by-step guide to setting the system's clock time.

SECTION 2 DISASSEMBLY

2-1. CASE (TOP)

Details the steps and parts for disassembling the top case.

2-2. CD DOOR

Procedure for removing the CD door mechanism.

2-3. FRONT PANEL SECTION AND CD MECHANISM DECK

Steps for disassembling the front panel and CD mechanism.

2-4. TAPE MECHANISM DECK AND PANEL BOARD

Instructions for disassembling the tape deck and panel board.

2-5. SUB TRANS BOARD, VIDEO OUT BOARD AND TRANS BOARD

Steps for disassembling the sub trans, video out, and trans boards.

2-6. MAIN BOARD AND POWER BOARD

Procedure for removing the main and power boards.

2-7. BASE UNIT

Details the disassembly of the CD base unit components.

2-8. CD BOARD, DRIVER BOARD, MOTOR BOARD AND ADDRESS SENSOR BOARD

Steps for disassembling CD, driver, motor, and address sensor boards.

SECTION 3 TEST MODE

[Change-over of AM Tuner Step between 9 kHz and 10 kHz]

Procedure to switch AM tuner steps between 9 kHz and 10 kHz.

[Cold Reset]

How to perform a cold reset to clear all data.

[Aging Mode]

Mode for checking CD and tape deck operation.

[FL Tube Test Mode]

Tests all fluorescent segments and LEDs.

[VACS ON/OFF Mode]

Mode to switch the VACS (Variable Attenuation Control System) ON/OFF.

[Version and Destination Display Mode]

Displays the system's version and destination information.

[Key Check Mode]

Checks the functionality of each button on the unit.

[CD Service Mode]

Allows free movement of the CD sled motor for cleaning.

[Equalizer Test Mode]

Tests the functionality of the equalizer settings.

[CD Ship Mode (No Memory Clear)]

Moves pickup for vibration durability, used before returning to customer.

SECTION 4 ELECTRICAL ADJUSTMENTS

FM Tuned Level Adjustment

Adjusts the FM tuned level for optimal reception.

Null Adjustment

Performs a null adjustment for the tuner section.

AM IF Adjustment

Adjusts the AM Intermediate Frequency for proper operation.

RF Level Check

Checks the RF signal level output from the CD board.

SECTION 5 DIAGRAMS

5-1. CIRCUIT BOARD LOCATION

Shows the physical location of all circuit boards within the unit.

• WAVEFORMS

Displays typical waveforms measured at various points on the boards.

5-2. BLOCK DIAGRAMS

Illustrates the overall system block diagram for the Tuner/CD section.

MAIN SECTION

Shows the block diagram for the main audio processing and control sections.

5-3. PRINTED WIRING BOARD CD SECTION

Shows the printed wiring board layout for the CD section.

5-4. SCHEMATIC DIAGRAM CD SECTION

Provides the schematic diagram for the CD section circuitry.

5-5. PRINTED WIRING BOARD MAIN SECTION

Shows the printed wiring board layout for the main control and audio sections.

5-6. SCHEMATIC DIAGRAM MAIN SECTION (1/4)

Part 1 of the schematic diagram for the main section.

5-7. SCHEMATIC DIAGRAM MAIN SECTION (2/4)

Part 2 of the schematic diagram for the main section.

5-8. SCHEMATIC DIAGRAM MAIN SECTION (3/4)

Part 3 of the schematic diagram for the main section.

5-9. SCHEMATIC DIAGRAM MAIN SECTION (4/4)

Part 4 of the schematic diagram for the main section.

5-10. PRINTED WIRING BOARD ADDRESS SENSOR, DRIVER MOTOR SECTION

Shows the printed wiring board layout for address sensor, driver, and motor sections.

5-11. PRINTED WIRING BOARD PANEL SECTION

Shows the printed wiring board layout for the front panel section.

5-12. SCHEMATIC DIAGRAM PANEL SECTION

Provides the schematic diagram for the panel section.

5-13. PRINTED WIRING BOARD POWER SECTION

Shows the printed wiring board layout for the power supply section.

5-14. PRINTED WIRING BOARD TRANS SECTION

Shows the printed wiring board layout for the transformer and sub-trans sections.

5-15. SCHEMATIC DIAGRAM TRANS SECTION

Provides the schematic diagram for transformer and sub-trans sections.

5-16. IC BLOCK DIAGRAMS

Illustrates the block diagrams for key ICs in the CD section.

5-17. IC PIN FUNCTION DESCRIPTION

Details the pin functions for IC601 (Master Control).

SECTION 6 EXPLODED VIEWS

6-1. MAIN SECTION

Exploded view of the main internal components and their part numbers.

6-2. FRONT PANEL SECTION

Exploded view of the front panel components and their part numbers.

6-3. MAIN BOARD SECTION

Exploded view of the main board mounting and associated parts.

6-4. CD MECHANISM DECK SECTION

Exploded view of the CD mechanism deck assembly and parts.

SECTION 7 ELECTRICAL PARTS LIST

ADDRESS SENSOR CD

List of electrical parts for the address sensor and CD sections.