Sony MHC-GRX990 User Manual

MICROFILM
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
ARGENTINE Model
SPECIFICATIONS
MHC-GRX9900
Photo: HCD-RXD9 (US model)
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol a are trade-
marks of Dolby Laboratories Licensing Corporation.
Amplifier section
US model:
AEP and UK models:
DIN power output (rated) 120 + 120 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
150 + 150 watts
(8 ohms at 1 kHz, 10% THD)
Music power output (reference)
275 + 275 watts
(8 ohms at 1 kHz, 10% THD)
E models:
The following measured at AC 120, 220, 240 V 50/60 Hz
DIN power output (rated) 200 + 200 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
250 + 250 watts
(6 ohms at 1 kHz, 10% THD)
– Continued on next page –
Model Name Using Similar Mechanism NEW
CD Mechanism Type CDM38LH-5BD32L
Base Unit Name BU-5BD32L
Optical Pick-up Name KSS-213D/Q-NP
Model Name Using Similar Mechanism NEW
Tape Transport Mechanism Type TCM-230AWR2
CD
Section
Tape deck
Section

Sony MHC-GRX990 Specifications

General

Radio Tuner	Yes
Weight	Main Unit: Approx. 8.2 kg; Speaker: Approx. 4.1 kg (each)
Tuner Bands	FM/AM
CD Changer	No
Remote Control	Yes
CD Player	Yes
USB Playback	Yes
FM Radio	Yes
LED Display	Yes
Karaoke Function	Yes
Type	Mini Hi-Fi System
Speaker Type	3-Way
Connectivity	USB, AUX
Functions	CD, Radio, USB Playback

Summary

Amplifier Section

Audio Power Specifications

Details power output and harmonic distortion specifications.

System Specifications

CD Section

Details specifications for the CD player section.

Tape Deck Section

Details specifications for the tape deck section.

Tuner Section

Details specifications for the FM/AM tuner section.

Servicing Notes

Safety Check-Out

Procedures for ensuring safety after repairs.

Leakage Test

Method for testing AC leakage current.

Diagrams

Block Diagrams

System block diagrams for various sections.

Printed Wiring Board Layouts

Printed wiring board layouts for different system sections.

Schematic Diagrams

Detailed circuit schematic diagrams for system components.

IC Pin Function Descriptions

Pin function details for key ICs.

Notes for Diagrams and PCBs

Explains notes for reading diagrams and printed wiring boards.

Exploded Views

Electrical Parts List