Sony HCD-GTR77 - User Manual

SERVICE MANUAL
Sony Corporation
Audio & Video Business Group
Published by Sony EMCS (Malaysia) PG Tec
HCD-GTR33/GTR55/GTR77
SPECIFICATIONS
9-890-541-01
2010C08-1
©
2010.03
E Model
Ver. 1.0 2010.03
• HCD-GTR33 is the amplifi er, USB, CD player, tuner and
tape deck (only E4 model) section in MHC-GTR33.
• HCD-GTR55 is the amplifi er, USB, CD player, tuner and
tape deck (only E4 model) section in MHC-GTR55.
• HCD-GTR77 is the amplifi er, USB, CD player, tuner and
tape deck (only E4 model) section in MHC-GTR77. Photo: HCD-GTR77 (E4 Model)
“WALKMAN” and “WALKMAN” logo are registered
trademarks of Sony Corporation.
MICROVAULT is a trademark of Sony Corporation.
MPEG Layer-3 audio coding technology and patents licensed
from Fraunhofer IIS and Thomson.
Windows Media is a registered trademark of Microsoft
Corporation in the United States and/or other countries.
“Memory Stick” is a trademark of Sony Corporation.
CD Section
Model Name Using Similar Mechanism HCD-GTZ4/GTZ4i/GTZ5
CD Mechanism Type CDM88BL-DVBU101
Optical Pick-up Name KHM-313CAB/C2NP
Tape Section
(Only for E4 model)
Model Name Using Similar Mechanism HCD-GT111/GT222/GT444/GT555
Tape mechanism Type CS-21SC-900TP
• Abbreviation
E4 : African model
COMPACT DISC DECK RECEIVER
Amplifi er section
MHC-GTR77
The following are measured at
Mexican model:
AC 127 V, 60 Hz
Other models:
AC 120 V, 220 V, 240 V, 50/60 Hz
Front/Satellite Speaker
Power Output (rated):
120 W + 120 W (at 6 Ω, 1 kHz, 1% THD)
Front Speaker
RMS output power (reference):
225 W + 225 W (per channel at 8 Ω, 1 kHz)
Satellite Speaker
RMS output power (reference):
100 W + 100 W (per channel at 24 Ω,
1 kHz)
Subwoofer
RMS output power (reference):
130 W + 130 W (12 Ω, 100 Hz)
MHC-GTR55
The following are measured at
Mexican model:
AC 127 V, 60 Hz
Other models:
AC 120 V, 220 V, 240 V, 50/60 Hz
Front Speaker
Power Output (rated):
110 W + 110 W (at 6 Ω, 1 kHz, 1% THD)
RMS output power (reference):
240 W + 240 W (per channel at 6 Ω, 1 kHz)
Subwoofer
RMS output power (reference):
240 W (6 Ω, 100 Hz)
MHC-GTR33
The following are measured at
Mexican model:
AC 127 V, 60 Hz
Other models:
AC 120 V, 220 V, 240 V, 50/60 Hz
Front Speaker
Power Output (rated):
75 W + 75 W (at 6 Ω, 1 kHz, 1% THD)
RMS output power (reference):
165 W + 165 W (per channel at 6 Ω, 1 kHz)
Subwoofer
RMS output power (reference):
160 W (6 Ω, 100 Hz)
Inputs
PC (AUDIO IN) L/R
Voltage 700 mV, impedance 47 kilohms
MIC
Sensitivity 1 mV, impedance 10 kilohms
(USB) port: Type A
Outputs
PHONES
Accepts headphones of 8 Ω or more
USB section
Supported bit rate
MP3 (MPEG 1 Audio Layer-3):
32 kbps – 320 kbps, VBR
WMA: 48 kbps – 192 kbps
AAC: 48 kbps – 320 kbps
Sampling frequencies
MP3 (MPEG 1 Audio Layer-3):
32 kHz/44.1 kHz/48 kHz
WMA: 44.1 kHz
AAC: 44.1 kHz
Transfer speed
Full-Speed
Supported USB device
Mass Storage Class
Maximum current
500 mA
Disc player section
System
Compact disc and digital audio system
Laser Diode Properties
Emission Duration: Continuous
Laser Output*: Less than 44.6 μW
* This output is the value measurement at
a distance of 200 mm from the objective
lens surface on the Optical Pick-up Block
with 7 mm aperture.
Frequency response
20 Hz – 20 kHz
Signal-to-noise ratio
More than 90 dB
Dynamic range
More than 88 dB
Tape deck section
(For African model only)
Recording system
4-track 2 channel, stereo
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
North American models:
87.5 MHz – 108.0 MHz (100 kHz step)
Other models:
87.5 MHz – 108.0 MHz (50 kHz step)
Antenna
FM lead antenna
Antenna terminals
75 ohms unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
Pan American and Oceanian models:
530 kHz – 1,710 kHz (with 10 kHz tuning
interval)
531 kHz – 1,710 kHz (with 9 kHz tuning
interval)
Other models:
530 kHz – 1,610 kHz (with 10 kHz tuning
interval)
531 kHz – 1,602 kHz (with 9 kHz tuning
interval)
Antenna
AM loop antenna, external antenna terminal
Intermediate frequency
450 kHz
General
Power requirements
Oceanian model: AC 230 V – 240 V,
50/60 Hz
Mexican model: AC 127 V, 60 Hz
Argentina model: AC 220 V, 50/60 Hz
Other models: AC 120 V, 220 V or
230 V – 240 V, 50/60 Hz, Adjustable with
voltage selector
Power consumption
MHC-GTR77: 260 W
MHC-GTR55: 250 W
MHC-GTR33: 280 W
Dimensions (w/h/d) (excl. speakers)
(Approx.)
231 mm × 361 mm × 429.5 mm
Mass (excl. speakers) (Approx.)
African and Pan Asian models:
HCD-GTR77/HCD-GTR55: 10.7 kg
HCD-GTR33: 10.5 kg
Other models:
HCD-GTR77/HCD-GTR55: 10.2 kg
HCD-GTR33: 10.0 kg
Design and specifi cations are subject to change
without notice.

Summary

SECTION 1 SERVICING NOTES

NOTES ON CHIP COMPONENT REPLACEMENT

Precautions for replacing surface-mount components.

FLEXIBLE CIRCUIT BOARD REPAIRING

SAFETY CHECK-OUT

Procedures for ensuring safety after repairs, focusing on AC leakage.

LEAKAGE TEST

Method for measuring AC leakage from metal parts to earth ground.

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

Precautions for handling the optical pick-up block and its flexible board.

NOTES ON LASER DIODE EMISSION CHECK

Safety guidelines for checking laser diode emission.

UNLEADED SOLDER

SECTION 2 DISASSEMBLY

2-1. DISASSEMBLY FLOW

Step-by-step guide for disassembling the unit.

2-5. FRONT PANEL BLOCK, HUB BOARD, DMB19 BOARD

2-7. MAIN BOARD

2-8. POWER AMP BOARD

2-10. CD MECHANISM BLOCK (CDM88 BL-DVBU101)

2-11. OPTICAL PICK-UP BLOCK (KHM-313 CAB)

SECTION 3 TEST MODE

PANEL TEST MODE

Mode to check fluorescent tube, LEDs, keys, model, and software version.

COMMON TEST MODE

Mode used to check the operations of the Amplifier section.

COLD RESET

Procedure to clear all data and reset EEPROM to initial conditions.

VACS ON;OFF

TUNER STEP CHANGE

CD SHIP MODE (WITH MEMORY CLEAR)

Mode to move the optical pick-up and clear EEPROM data for shipping.

CD SHIP MODE (WITHOUT MEMORY CLEAR)

Mode to move the optical pick-up for vibration durability without clearing data.

FACTORY PRESET

METER TEST MODE

Mode used to check the meter device by testing pointer movement.

CDM AGING MODE

SECTION 4 MECHANICAL ADJUSTMENTS

PRECAUTION

Precautions for cleaning, demagnetizing, and tool usage during adjustments.

Torque Measurement

Specifications for torque measurements using specific meters.

Tape Tension Measurement

Specifications for tape tension measurements using a specific meter.

SECTION 5 ELECTRICAL CHECK

TUNER SECTION

Procedure for checking FM tune level reception.

DECK SECTION

Procedures for demagnetizing the head and adjusting azimuth.

RECORD;PLAYBACK HEAD AZIMUTH ADJUSTMENT

Detailed steps for adjusting the record/playback head azimuth.

SECTION 6 DIAGRAMS

6-1. BLOCK DIAGRAM - RF SERVO, USB Section -

Block diagram illustrating the RF servo and USB signal paths.

6-2. BLOCK DIAGRAM - MAIN Section -

Block diagram showing the main signal flow and component connections.

6-3. BLOCK DIAGRAM - AMP Section -

Block diagram detailing the amplifier section's signal paths and power distribution.

6-4. BLOCK DIAGRAM - PANEL, POWER SUPPLY Section -

Block diagram of the panel and power supply sections.

Circuit Boards Location

6-5. PRINTED WIRING BOARD - DMB19 Board

Component layout for the DMB19 printed wiring board.

6-6. SCHEMATIC DIAGRAM - DMB19 Board (1;3)

First part of the schematic diagram for the DMB19 board.

6-7. SCHEMATIC DIAGRAM - DMB19 Board (2;3)

Second part of the schematic diagram for the DMB19 board.

6-8. SCHEMATIC DIAGRAM - DMB19 Board (3;3)

Third part of the schematic diagram for the DMB19 board.

6-9. PRINTED WIRING BOARD - MAIN Board

Component layout for the MAIN printed wiring board.

6-10. SCHEMATIC DIAGRAM - MAIN Board (1;3)

6-11. SCHEMATIC DIAGRAM - MAIN Board (2;3)

6-12. SCHEMATIC DIAGRAM - MAIN Board (3;3)

6-13. PRINTED WIRING BOARD - HUB Board

6-14. SCHEMATIC DIAGRAM - HUB Board

6-15. PRINTED WIRING BOARD - POWER Board

6-16. SCHEMATIC DIAGRAM - POWER Board

6-17. PRINTED WIRING BOARD - DISPLAY Board

6-18. SCHEMATIC DIAGRAM - DISPLAY Board

6-19. PRINTED WIRING BOARDS - MIC, USB AND VOL Board

6-20. SCHEMATIC DIAGRAM - MIC, USB AND VOL Board

6-21. PRINTED WIRING BOARD - TC Board

6-22. SCHEMATIC DIAGRAM - TC Board

6-23. PRINTED WIRING BOARD - TRANS Board

6-24. SCHEMATIC DIAGRAM - TRANS Board

Waveforms

IC Block Diagrams

HUB BOARD IC1501 USB2512 A-AEZG (USB CONTROLLER)

Pinout and function description for the USB controller IC on the HUB board.

MAIN BOARD (1;3) IC401 R5 F364 AEDFA (SYSTEM CONTROLLER)

Pinout and function description for the System Controller IC on the MAIN board.

IC Pin Function Description

Continued pinout and function descriptions for ICs on the MAIN board.

SECTION 7 EXPLODED VIEWS

7-1. CASE SECTION

7-2. TOP PANEL SECTION

7-3. LOADING PANEL SECTION, HUB BOARD SECTION, DMB19 BOARD SECTION

7-4. DISPLAY BOARD SECTION

7-5. FRONT PANEL SECTION

7-6. BACK PANEL SECTION

7-7. MAIN BOARD SECTION

7-8. CHASSIS SECTION

7-9. CD MECHANISM SECTION (CDM88 BL-DVBU101)

SECTION 8 ELECTRICAL PARTS LIST

Sony HCD-GTR77 Specifications

General

Brand	Sony
Model	HCD-GTR77
Category	Stereo System
Language	English