Sony HCD-RXD7 Service Manual

MICROFILM
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
HCD-GRX50/R770/RXD7
Photo: HCD-GRX50
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.
Canadian Model
HCD-RXD7
AEP Model
HCD-R770/RXD7
UK Model
HCD-R770
E Model
Australian Model
HCD-GRX50
HCD-GRX50/R770/RXD7 are the Ampli-
fier, CD player, Tape Deck and Tuner
section in HMC-GRX50/R770/RXD7.
SPECIFICATIONS
Amplifier section
Canadian model:
Continuous RMS power output (reference)
70 + 70 watts
(6 ohms at 1 kHz, 10% THD)
Total harmonic distortion less than 0.07%
(6 ohms at 1 kHz, 45 W)
European and Russian models:
DIN power output (rated) 80 + 80 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
100 + 100 watts
(8 ohms at 1 kHz, 10% THD)
Music power output (reference)
170 + 170 watts
(6 ohms at 1 kHz, 10% THD)
Other models:
The following measured at AC 120, 220, 240 V 50/60 Hz
DIN power output (rated) 110 + 110 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
140 + 140 watts
(8 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 HCD-RXD7 Specifications

General

Type	Mini Hi-Fi System
Power Output	100 W
CD Player	Yes
Radio Tuner	Yes
Bluetooth	No
USB Playback	No
Speaker Configuration	2.0
CD Player Type	Single Disc
Functions	CD, Radio
Tuner Bands	FM, AM

Summary

SERVICING NOTES

Optical Pick-Up and Laser Safety Precautions

Precautions for handling optical pick-up, laser diode emission check, and chip components.

Flexible Circuit Board Repairing Guidelines

Guidelines for repairing flexible circuit boards, including soldering temperatures.

GENERAL UNIT INFORMATION

Location of Controls

Identifies the location of controls on the front and rear panels of the unit.

Setting the Clock Time

Step-by-step guide on how to set the clock time on the unit.

TEST MODES

System Reset and Tuning Interval Modes

Details on Cold Reset, Hot Reset, and AM Tuning Interval change-over modes.

CD Specific Test Modes

Explains CD Service Mode, CD Delivery Mode, and Key Check Mode.

Aging Mode Operation

Procedures for checking CD and Tape Deck sections in Aging Mode.

ADJUSTMENTS

Mechanical Adjustments and Torque Measurement

Procedures for mechanical adjustments and torque measurements of tape deck parts.

Deck Section Electrical Adjustments

Electrical adjustment procedures for the tape deck section, including azimuth and speed.

CD Section Electrical Checks

Electrical checks for the CD section, including S-curve, E-F balance, and RF level.

DIAGRAMS AND CIRCUIT ANALYSIS

Block Diagrams

Overall block diagrams illustrating CD Servo, Tape Deck, Main, and Power Supply sections.

Printed Wiring Board Layouts

Layouts for BD, CD Motor, AUDIO, LEAF SW, MAIN, PANEL, CD SW, and Transformer boards.

Schematic Diagrams

Detailed schematics for BD, CD Motor, AUDIO, LEAF SW, MAIN, Panel, CD SW, and Transformer boards.

IC Block Diagrams and Pin Functions

Detailed IC pin functions and block diagrams for key integrated circuits.

EXPLODED VIEWS

Unit Section Exploded Views

Visual breakdown of unit sections: Case, Front Panel, Chassis, CD Mechanism, Base Unit, Tape Mechanism.

Mechanism Exploded Views

Exploded views of CD and Tape Mechanism Deck Sections.

ELECTRICAL PARTS LIST

MISCELLANEOUS INFORMATION

Hardware List

List of miscellaneous parts and hardware used in the unit assembly.