Sony HCD-GTR8 Service Manual

1
HCD-GTR6/GTR6B/GTR7/GTR8/GTR8B
Ver. 1.0 2009. 05
SERVICE MANUAL
E Model
HCD-GTR6/GTR6B/GTR7/GTR8/GTR8B
Australian Model
HCD-GTR6B/GTR8B
AUDIO POWER SPECIFICATION
Amplifi er section
MHC-GTR8 (HCD-GTR8/HCD-GTR8B)
The following are measured at
Mexican model: AC 127 V, 60 Hz
Other models: AC 120, 220, 240 V, 50/60 Hz
Front/Surround speaker
Power Output (rated): 210 W + 210 W (at 6 Ω, 1 kHz, 1% THD,
at LINK MODE)
Front speaker
RMS output power (reference):
280 W + 280 W (per channel at 8 Ω,
1 kHz, 10% THD)
Surround speaker
RMS output power (reference):
110 W + 110 W (per channel at 24 Ω,
1 kHz, 10% THD)
Subwoofer
RMS output power (reference):
160 W + 160 W (per channel at 6 Ω,
100 Hz, 10% THD)
SPECIFICATIONS
MHC-GTR7 (HCD-GTR7)
The following are measured at
Mexican model: AC 127 V, 60 Hz
Other models: AC 120, 220, 240 V, 50/60 Hz
Front/Surround speaker
Power Output (rated): 215 W + 215 W (at 6 Ω, 1 kHz, 1% THD, at LINK MODE)
Front speaker
RMS output power (reference):
285 W + 285 W (per channel at 8 Ω, 1 kHz, 10% THD)
Surround speaker
RMS output power (reference): 110 W + 110 W (per channel at 24 Ω,
1 kHz, 10% THD)
Subwoofer
RMS output power (reference): 210 W (at 8 Ω, 100 Hz, 10% THD)
Sony Corporation
Audio & Video Business Group
Published by Sony EMCS (Malaysia) PG Tec
9-890-515-01
2009E08-1
© 2009. 05
– Continued on next page –
COMPACT DISC DECK RECEIVER
• HCD-GTR6/GTR7/GTR8
are the tuner, CD and
amplifi er section in
MHC-GTR6/GTR7/GTR8
• HCD-GTR6B/GTR8B
are the tuner, deck, CD and
amplifi er section in
MHC-GTR6/GTR7/GTR8
Photo : HCD-GTR8B (E Model)
HCD-GTR6/GTR6B/GTR7/GTR8/GTR8B
CD
Section
Model Name Using Similar Mechanism NEW
CD Mechanism Type CDM74HF-DVBU101//M
Optical Pick-up Name KHM-313CAB/C2NP
Tape Deck Section
only for HCD-GTR6B/GTR8B
Model Name Using Similar Mechanism HCD-GTX777/GTX787/GTX888
Tape Mechanism Type CFP42608

Sony HCD-GTR8 Specifications

General

Brand	Sony
Model	HCD-GTR8
Category	Stereo System
Language	English

Summary

SPECIFICATIONS

AUDIO POWER SPECIFICATION

Details amplifier output power for different models and configurations.

SECTION 1 DISASSEMBLY

1-1. CASE (TOP)

Procedure for removing the top case assembly.

1-2. TAPE MECHANISM DECK

Procedure for removing the tape mechanism deck.

1-3. LOADING PANEL

Procedure for removing the loading panel.

1-4. FRONT PANEL SECTION

Procedure for removing the front panel section.

1-5. MIC BOARD, USB BOARD, MICRV BOARD, HEADPHONE BOARD

Procedure for removing interface boards.

1-6. DISPLAY BOARD, STR BOARD, CD SW BOARD

Procedure for removing display and control boards.

1-13. CD BLOCK SECTION

Procedure for removing the CD mechanism block.

1-16. OPTICAL PICK-UP

Procedure for removing the optical pick-up unit.

SECTION 2 TEST MODE

GC TEST MODE

Checks indicator tubes, LEDs, keys, and model/software versions.

MC TEST MODE

Checks amplifier and tape operations, including volume and tape functions.

COLD RESET

Clears all RAM data, including preset data, to initial conditions.

SECTION 3 MECHANICAL ADJUSTMENTS

Precaution

Important precautions and cleaning procedures before mechanical adjustments.

Torque Measurement

Specifies torque values for tape mechanism adjustments.

SECTION 4 ELECTRICAL ADJUSTMENTS

TUNER SECTION

Procedures for checking FM tune level and signal reception.

DECK SECTION

Procedures for demagnetizing heads and adjusting azimuth.

SECTION 5 DIAGRAMS

BLOCK DIAGRAM — RF/SERVO SECTION

Overview of the RF and servo systems block.

BLOCK DIAGRAM — MAIN SECTION

Overview of the main system control block.

BLOCK DIAGRAM — AMP/SUBWOOFER SECTION

Overview of the amplifier and subwoofer blocks.

CIRCUIT BOARDS LOCATION

Diagram showing the physical location of various circuit boards within the unit.

PRINTED WIRING BOARD — DISPLAY BOARD

Layout of the display board's printed wiring.

SCHEMATIC DIAGRAM — MAIN BOARD (1/5)

Detailed circuit schematic for the main board (part 1/5).

SECTION 6 EXPLODED VIEWS

MAIN SECTION

Exploded view of the main internal chassis and components.

BACK PANEL SECTION

Exploded view of the rear panel and associated parts.

FRONT PANEL SECTION (1)

Exploded view of the front panel assembly (part 1).

CD MECHANISM SECTION (1)

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

SECTION 7 ELECTRICAL PARTS LIST

CD SW BOARD PARTS

List of electrical parts for the CD SW board.

DISPLAY BOARD PARTS

List of electrical parts for the display board.

CAPACITORS

List of various capacitor types and their specifications.

RESISTORS

List of various resistor types and their specifications.

REVISION HISTORY