HCD-GTR333, HCD-GTR555, HCD-GTR777, HCD-GTR888, MHC-GTR333, MHC-GTR555, MHC-GTR777, MHC-GTR888 - Sony Audio Service Manual (repair manual)

hcd-gtr333, hcd-gtr555, hcd-gtr777, hcd-gtr888, mhc-gtr333, mhc-gtr555, mhc-gtr777, mhc-gtr888 service manual
Model
HCD-GTR333 HCD-GTR555 HCD-GTR777 HCD-GTR888 MHC-GTR333 MHC-GTR555 MHC-GTR777 MHC-GTR888
Pages
107
Size
6.3 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-gtr333-hcd-gtr555-hcd-gtr777-hcd-gtr888-mhc-gt.pdf
Date

Read Sony HCD-GTR333 / HCD-GTR555 / HCD-GTR777 / HCD-GTR888 / MHC-GTR333 / MHC-GTR555 / MHC-GTR777 / MHC-GTR888 Service Manual online

SERVICE MANUAL
Sony Corporation
Published by Sony EMCS (Malaysia) PG Tec
HCD-GTR333/GTR555/GTR777/GTR888
SPECIFICATIONS
9-890-567-04
2012E80-1
© 
2012.05
E Model
Ver. 1.3  2012.05
•  HCD-GTR333 is the amplifi er, USB, CD player and tuner 
section in MHC-GTR333.
•  HCD-GTR555 is the amplifi er, USB, CD player and tuner 
section in MHC-GTR555.
•  HCD-GTR777 is the amplifi er, USB, CD player and tuner 
section in MHC-GTR777.
•  HCD-GTR888 is the amplifi er, USB, CD player and tuner 
section in MHC-GTR888.
Photo: HCD-GTR888 (E2 Model)
“WALKMAN” and “WALKMAN” logo are registered 
trademarks 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.
This product contains technology subject to certain 
intellectual property rights of Microsoft.
Use or distribution of this technology outside of this 
product is prohibited without the appropriate license(s) from 
Microsoft.
CD Section
Model Name Using Similar Mechanism
HCD-GTR6/GTR6B/GTR7/GTR8/GTR8B
CD Mechanism Type
CDM74HF-DVBU101//M
Optical Pick-up Name
KHM-313CAB/C2NP
• Abbreviation
E2 : 120V AC area in E model
COMPACT DISC RECEIVER
Amplifi er section
The following are measured at AC 120 V –
240 V, 50/60 Hz
MHC-GTR888
Front/Satellite speaker
 
Power Output (rated):
 
290 W + 290 W (at 4 Ω, 1 kHz, 1% THD)
Front speaker
 
RMS output power (reference):
 
360 W + 360 W (per channel at 6 Ω, 1 kHz)
Satellite speaker
 
RMS output power (reference):
 
180 W + 180 W (per channel at 12 Ω, 1 kHz)
Subwoofer
 
RMS output power (reference):
 
260 W + 260 W (per channel at 8 Ω, 100 Hz)
MHC-GTR777
Front/Satellite speaker
 
Power Output (rated):
 
190 W + 190 W (at 4 Ω, 1 kHz, 1% THD)
Front speaker
 
RMS output power (reference):
 
220 W + 220 W (per channel at 6 Ω, 1 kHz)
Satellite speaker
 
RMS output power (reference):
 
110 W + 110 W (per channel at 12 Ω, 1 kHz)
Subwoofer
 
RMS output power (reference):
 
170 W + 170 W (8 Ω, 100 Hz)
MHC-GTR555
Front speaker
 
Power Output (rated):
 
160 W + 160 W (at 5 Ω, 1 kHz, 1% THD)
 
RMS output power (reference):
 
250 W + 250 W (per channel at 5 Ω, 1 kHz)
Subwoofer
 
RMS output power (reference):
 250 
(5 
Ω, 100 Hz)
MHC-GTR333
Front speaker
 
Power Output (rated):
 
130 W + 130 W (at 4 Ω, 1 kHz,1% THD)
 
RMS output power (reference):
 
250 W + 250 W (per channel at 4 Ω, 1 kHz)
Inputs
TV (AUDIO IN) L/R
 
Voltage 1.2 V, impedance 47 kΩ
DVD/PC (AUDIO IN) L/R
 
Voltage 1.2 V, impedance 47 kΩ
MIC (MHC-GTR888/MHC-GTR777 only)
 
Sensitivity 1 mV, impedance 10 kΩ
 A, 
 B port: Type A
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
Tuner section
FM stereo, FM/AM superheterodyne tuner
Antenna:
 
FM lead antenna
 
AM loop antenna
FM tuner section
Tuning range
 
87.5 MHz – 108.0 MHz (50 kHz step)
AM tuner section
Tuning range
 Pan 
American 
models:
 
530 kHz – 1,710 kHz (10 kHz step)
 
531 kHz – 1,710 kHz (9 kHz step)
 Other 
models:
 
530 kHz – 1,610 kHz (10 kHz step)
 
531 kHz – 1,602 kHz (9 kHz step)
General
Power requirements
 
AC 120 V – 240 V, 50/60 Hz
Power consumption
 MHC-GTR888: 
220 
W
MHC-GTR777: 160 W
MHC-GTR555: 150 W
MHC-GTR333: 110 W
Dimensions (w/h/d) (excl. speakers)
(Approx.)
 
280 mm × 333 mm × 439.5 mm
Mass (excl. speakers) (Approx.)
 
HCD-GTR888: 7.1 kg
HCD-GTR777/HCD-GTR555: 6.7 kg
HCD-GTR333: 6.4 kg
Supplied accessories
 
Remote control (1)
R6 (Size AA) batteries (2)
FM lead/AM loop antenna (1)
Spacer A (MHC-GTR888 only) (2)
Spacer B (MHC-GTR888 only) (2)
Design and specifi cations are subject to change 
without notice.
HCD-GTR333/GTR555/GTR777/GTR888
2
NOTES  ON  CHIP  COMPONENT  REPLACEMENT
•  Never reuse a disconnected chip component.
•  Notice that the minus side of a tantalum capacitor may be 
damaged by heat.
FLEXIBLE  CIRCUIT  BOARD  REPAIRING
•  Keep the temperature of soldering iron around 270 °C during 
repairing.
•  Do not touch the soldering iron on the same conductor of the 
circuit board (within 3 times).
•  Be careful not to apply force on the conductor when soldering 
or unsoldering.
SAFETY-RELATED  COMPONENT  WARNING!
COMPONENTS  IDENTIFIED  BY  MARK  0  OR  DOTTED  LINE  
WITH  MARK  
0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN  
THE  PARTS  LIST  ARE  CRITICAL  TO  SAFE  OPERATION.
REPLACE  THESE  COMPONENTS  WITH  SONY  PARTS 
 
WHOSE  PART  NUMBERS  APPEAR  AS  SHOWN  IN  THIS  
MANUAL  OR  IN  SUPPLEMENTS  PUBLISHED  BY  SONY.
CAUTION
Use of controls or adjustments or performance of procedures 
other than those specifi ed herein may result in hazardous 
radiation exposure.
SAFETY  CHECK-OUT
After correcting the original service problem, perform the following 
safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, 
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE  TEST
The AC leakage from any exposed metal part to earth ground and 
from all exposed metal parts to any exposed metal part having a 
return to chassis, must not exceed 0.5 mA (500 microamperes.). 
Leakage current can be measured by any one of three methods.
1.  A commercial leakage tester, such as the Simpson 229 or RCA 
WT-540A. Follow the manufacturers’ instructions to use these 
instruments.
2.  A battery-operated AC milliammeter. The Data Precision 245 
digital multimeter is suitable for this job.
3.  Measuring the voltage drop across a resistor by means of a 
VOM or battery-operated AC voltmeter. The “limit” indication 
is 0.75 V, so analog meters must have an accurate low-voltage 
scale. The Simpson 250 and Sanwa SH-63Trd are examples 
of a passive VOM that is suitable. Nearly all battery operated 
digital multimeters that have a 2 V AC range are suitable. (See 
Fig. A)
1.5 k
Ω
0.15 
μF
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
Fig. A.  Using an AC voltmeter to check AC leakage.
This appliance is classified as a CLASS 1 
LASER product. This marking is located on 
the rear exterior.
HCD-GTR333/GTR555/GTR777/GTR888
3
TABLE  OF  CONTENTS
1. SERVICING 
NOTES
 ................................................  
4
2. DISASSEMBLY
2-1. Disassembly 
Flow 
...........................................................   6
2-2. Case 
.................................................................................   7
2-3. Loading 
Panel 
.................................................................   7
2-4.  Front Panel Section .........................................................   8
2-5. TUNER 
Board 
................................................................   8
2-6.  CD Mechanism Section (CDM74HFV-DVBU101) .......   9
2-7. MAIN 
Board 
...................................................................   9
2-8.  Back Panel Section .........................................................   10
2-9.  2CH DAMP Board, 3CH DAMP Board,
4CH DAMP Board ..........................................................   10
2-10. Chassis Section ...............................................................   11
2-11.  Cover Dust (CDM) .........................................................   11
2-12. Optical Device ................................................................   12
2-13.  DMB21 Board  ................................................................   12
2-14.  DRIVER Board, SWITCH Board ...................................   13
2-15. SENSOR Board ..............................................................   13
2-16.  MOTOR (TB) Board.......................................................   14
2-17.  MOTOR (LD) Board ......................................................   14
3. 
TEST  MODE
 .............................................................   15
4. 
ELECTRICAL  CHECK
 ..........................................   16
5. DIAGRAMS
5-1.  Block Diagram - USB Section - .....................................   17
5-2.  Block Diagram - RF/SERVO Section - ..........................   18
5-3.  Block Diagram - TUNER Section - ................................   19
5-4.  Block Diagram - MAIN Section - ...................................   20
5-5.  Block Diagram - DISPLAY Section - .............................   21
5-6.  Block Diagram - DAMP Section (1/2) - .........................   22
5-7.  Block Diagram - DAMP Section (2/2) - .........................   23
5-8.  Printed Wiring Board - DMB21 Board (Side A) ............   25
5-9.  Printed Wiring Board - DMB21 Board (Side B) ............   26
5-10.  Schematic Diagram - DMB21 Board (1/3) - ..................   27
5-11.  Schematic Diagram - DMB21 Board (2/3) - ..................   28
5-12.  Schematic Diagram - DMB21 Board (3/3) - ..................   29
5-13.  Printed Wiring Board - MAIN Board (Side A) ...............   30
5-14.  Printed Wiring Board - MAIN Board (Side B) ...............   31
5-15.  Schematic Diagram - MAIN Board (1/4) - .....................   32
5-16.  Schematic Diagram - MAIN Board (2/4) - .....................   33
5-17.  Schematic Diagram - MAIN Board (3/4) - .....................   34
5-18.  Schematic Diagram - MAIN Board (4/4) - .....................   35
5-19.  Printed Wiring Board - 2CH DAMP Board - ..................   36
5-20.  Schematic Diagram - 2CH DAMP Board (1/4) - ............   37
5-21.  Schematic Diagram - 2CH DAMP Board (2/4) - ............   38
5-22.  Schematic Diagram - 2CH DAMP Board (3/4) - ............   39
5-23.  Schematic Diagram - 2CH DAMP Board (4/4) - ............   40
5-24.  Printed Wiring Board - 3CH DAMP Board (Side A)......   41
5-25.  Printed Wiring Board - 3CH DAMP Board (Side B)......   42
5-26.  Schematic Diagram - 3CH DAMP Board (1/4) - ............   43
5-27.  Schematic Diagram - 3CH DAMP Board (2/4) - ............   44
5-28.  Schematic Diagram - 3CH DAMP Board (3/4) - ............   45
5-29.  Schematic Diagram - 3CH DAMP Board (4/4) - ............   46
5-30.  Printed Wiring Board - 4CH DAMP Board (Side A)......   47
5-31.  Printed Wiring Board - 4CH DAMP Board (Side B)......   48
5-32.  Schematic Diagram - 4CH DAMP Board (1/4) - ............   49
5-33.  Schematic Diagram - 4CH DAMP Board (2/4) - ............   50
5-34.  Schematic Diagram - 4CH DAMP Board (3/4) - ............   51
5-35.  Schematic Diagram - 4CH DAMP Board (4/4) - ............   52
5-36.  Printed Wiring Board - DISPLAY Board - .....................   53
5-37.  Schematic Diagram - DISPLAY Board - ........................   54
5-38.  Printed Wiring Board - TUNER Board - ........................   55
5-39.  Schematic Diagram - TUNER Board - ...........................   55
5-40.  Printed Wiring Board - MIC Board - ..............................   56
5-41.  Schematic Diagram - MIC Board - .................................   56
5-42.  Printed Wiring Board - USB and VOLUME Board - .....   57
5-43.  Schematic Diagram - USB and VOLUME Board - ........   58
5-44.  Printed Wiring Board - DRIVER Board - .......................   59
5-45.  Schematic Diagram - DRIVER Board - .........................   60
6. 
EXPLODED  VIEWS
6-1.  Case Section  ...................................................................   72
6-2.  Front Panel Section  ........................................................   73
6-3.  Back Panel Section .........................................................   74
6-4. Chassis 
Section 
...............................................................  75
6-5.  CD Mechanism Section (1)
(CDM74HFV-DVBU101) ..............................................   76
6-6.  CD Mechanism Section (2) .............................................   77
7. 
ELECTRICAL  PARTS  LIST
 ...............................   78
Ver. 1.3
HCD-GTR333/GTR555/GTR777/GTR888
4
SECTION  1
SERVICING  NOTES
NOTES  ON  HANDLING  THE OPTICAL  PICK-UP  
BLOCK  OR  BASE  UNIT
The laser diode in the optical pick-up block may suffer electro-
static break-down because of the potential difference generated by 
the charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also 
use the procedure in the printed matter which is included in the 
repair parts.
The fl exible board is easily damaged and should be handled with 
care.
NOTE  OF  REPLACING  2CH/3CH/4CH  DAMP  BOARD
Thermal Sheet (P/N: 4-265-384-01) which is attached to heat sink 
on DAMP board may deform by contact of IC long time. When 
you replace DAMP board, please remove the original sheet from 
heat sink and attach new one.
UNLEADED  SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution:  Some printed circuit boards may not come printed with 
the lead free mark due to their particular size)
 : LEAD  FREE  MARK
Unleaded solder has the following characteristics.
•  Unleaded solder melts at a temperature about 40 °C higher 
than ordinary solder.
 
Ordinary soldering irons can be used but the iron tip has to be 
applied to the solder joint for a slightly longer time.
 
Soldering irons using a temperature regulator should be set to 
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if 
the heated tip is applied for too long, so be careful!
• Strong 
viscosity
 
Unleaded solder is more viscous (sticky, less prone to fl ow) 
than ordinary solder so use caution not to let solder bridges 
occur such as on IC pins, etc.
•  Usable with ordinary solder
 
It is best to use only unleaded solder but unleaded solder may 
also be added to ordinary solder.
NOTE  OF  REPLACING  THE  IC102  AND  IC4605  ON  
THE  DMB21  BOARD
IC102 and IC4605 on the DMB21 board cannot exchange with 
single. When these parts on the DMB21 board are damaged, ex-
change the entire mounted board.
RELEASING  THE  DISC  TRAY  LOCK
The disc tray lock function for the antitheft of an demonstration 
disc in the store is equipped.
Releasing Procedure:
1. Press 
[I/
1
 STANDBY] button to turn the power on.
2.  Press the [CD/DISC SKIP] button to select CD function.
3.  While pressing the [TV] button, press the [
Z
 OPEN/CLOSE] 
button for more 5 seconds).
4.  The message “UNLOCKED” is displayed and the disc tray is 
unlocked.
Note: When 
LOCKED
 is displayed, the slot lock is not released by 
turning power on/off with the
 [I/
1
 STANDBY]
 button.
MODEL  IDENTIFICATION
– Back Panel –
PART No.
Model
Part No.
HCD-GTR333: E2, E51, AR /
HCD-GTR555: AR
4-265-400-0[]
HCD-GTR333: MX
4-265-400-2[]
HCD-GTR555: E2, E51
4-265-400-5[]
HCD-GTR555: MX
4-265-400-7[]
HCD-GTR777, GTR888: E2, E51, AR
4-265-401-0[]
HCD-GTR777, GTR888: MX
4-265-401-2[]
NOTES  ON  LASER DIODE  EMISSION  CHECK
The laser beam on this model is concentrated so as to be focused 
on the disc refl ective surface by the objective lens in the optical 
pickup block. Therefore, when checking the laser diode emission, 
observe from more than 30 cm away from the objective lens.
Ver. 1.3
Note: Refer to supplement-1 for the printed wiring board, 
schematic diagram and electrical parts list of MAIN board 
(Suffi x-13 and Suffi x-21, 41, 51).
Page of 107
Display

Download Sony HCD-GTR333 / HCD-GTR555 / HCD-GTR777 / HCD-GTR888 / MHC-GTR333 / MHC-GTR555 / MHC-GTR777 / MHC-GTR888 Service Manual (Repair Manual)

Here you can read online and download Sony HCD-GTR333 / HCD-GTR555 / HCD-GTR777 / HCD-GTR888 / MHC-GTR333 / MHC-GTR555 / MHC-GTR777 / MHC-GTR888 Service Manual in PDF. HCD-GTR333 / HCD-GTR555 / HCD-GTR777 / HCD-GTR888 / MHC-GTR333 / MHC-GTR555 / MHC-GTR777 / MHC-GTR888 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony HCD-GTR333 / HCD-GTR555 / HCD-GTR777 / HCD-GTR888 / MHC-GTR333 / MHC-GTR555 / MHC-GTR777 / MHC-GTR888 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.