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Model
HCD-GTZ2 HCD-GTZ2I HCD-GTZ3 HCD-GTZ3I MHC-GTZ2 MHC-GTZ2I MHC-GTZ3 MHC-GTZ3I
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71
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Service Manual
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Audio
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hcd-gtz2-hcd-gtz2i-hcd-gtz3-hcd-gtz3i-mhc-gtz2-mhc.pdf
Date

Sony HCD-GTZ2 / HCD-GTZ2I / HCD-GTZ3 / HCD-GTZ3I / MHC-GTZ2 / MHC-GTZ2I / MHC-GTZ3 / MHC-GTZ3I Service Manual ▷ View online

SERVICE MANUAL
Sony Corporation
Audio&Video Business Group
Published by Sony Techno Create Corporation
HCD-GTZ2/GTZ2i/
GTZ3/GTZ3i
SPECIFICATIONS
COMPACT DISC RECEIVER
9-889-506-02
2009H05-1
© 
2009.08
AEP Model
HCD-GTZ2i/GTZ3i
UK Model
HCD-GTZ3i
E Model
HCD-GTZ2/GTZ3
Ver. 1.1  2009.08
•  HCD-GTZ2 is the amplifi er, USB, Disc player, tuner and 
iPod section in MHC-GTZ2.
•  HCD-GTZ2i is the amplifi er, USB, Disc player, tuner and 
iPod section in MHC-GTZ2i.
•  HCD-GTZ3 is the amplifi er, USB, Disc player, tuner and 
iPod section in MHC-GTZ3.
•  HCD-GTZ3i is the amplifi er, USB, Disc player, tuner and 
iPod section in MHC-GTZ3i.
Photo: HCD-GTZ3
Model Name Using Similar Mechanism
NEW
Mechanism Type
CDM88B-DVBU101
Optical Pick-up Block Name
KHM-313CAB
“WALKMAN” and “WALKMAN” logo are 
registered trademarks of Sony Corporation.
MICROVAULT is a trademark of Sony Cor-
poration.
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 Cor-
poration.
iPod is a trademark of Apple Inc., registered in 
the U.S. and other countries.
Amplifier section
HCD-GTZ3 / GTZ3i
The following are measured at
European model:
AC 230 V, 50 Hz
Mexican model:
AC 127 V, 60 Hz
Other models:
AC 120, 220, 240 V, 50/60 Hz
Front speaker
Power output (rated): 75 W + 75 W 
(at 6 
:, 1 kHz, 1% THD)
RMS output power (reference): 
135 W + 135 W (per channel at 6 
:, 1 kHz, 10% 
THD)
Subwoofer
RMS output power (reference): 130 W 
(at 6 
:, 100 Hz, 10% THD)
HCD-GTZ2 / GTZ2i
The following are measured at
European model:
AC 230 V, 50 Hz
Other models:
AC 120, 220, 240 V, 50/60 Hz
Front speaker
Power output (rated): 60 W + 60 W 
(at 6 
:, 1 kHz, 1% THD)
RMS output power (reference): 
100 W + 100 W (per channel at 6 
:, 1 kHz, 10% 
 THD)
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 
: or more
FRONT SPEAKER: accepts impedance of 6 
:
SUBWOOFER
(HCD-GTZ3 / GTZ3i only): 
accepts impedance of 6 
USB section
Supported bit rate
MP3 (MPEG 1 Audio Layer-3): 
32 – 320 kbps, VBR
WMA: 48 – 192 kbps
AAC: 48 – 320 kbps
Sampling frequencies
MP3 (MPEG 1 Audio Layer-3): 
32/44.1/48 kHz
WMA: 44.1 kHz
AAC: 44.1 kHz
Transfer speed
Full-Speed
Supported USB device
Mass Storage Class
Maximum current
500 mA
AM tuner section
Tuning range
European models:
531 – 1,602 kHz (with 9 kHz tuning interval)
Other models:
530 – 1,610 kHz (with 10 kHz tuning interval)
531 – 1,602 kHz (with 9 kHz tuning interval)
Antenna: AM loop antenna, external antenna 
terminal
Intermediate frequency: 450 kHz
iPod section
DC5V 500mA MAX
General
Power requirements
European models: AC 230 V, 50/60 Hz
Argentine model: AC 220 V, 50/60 Hz
Other models: AC 120, 220 or 230 – 240 V, 
50/60 Hz, Adjustable with voltage selector
Power consumption
HCD-GTZ3 / GTZ3i: 280 W
HCD-GTZ2 / GTZ2i: 190 W
Dimensions (w/h/d) (excl. speakers)
Approx. 231 × 361 × 430.5 mm 
(9 1/8 × 14 1/4 × 17 1/4 inch)
Mass (excl. speakers)
HCD-GTZ3 / GTZ3i: 10.0 kg (22 lb 1 oz)
HCD-GTZ2 / GTZ2i: 8.0 kg
Design and specifications are subject to change without 
notice.
Disc player section 
System
Compact disc and digital audio system
Laser Diode Properties
Emission Duration: Continuous
Laser Output*: Less than 44.6 
PW
* 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
FM tuner section
Antenna: FM lead antenna
Antenna terminals: 75 ohms unbalanced
Intermediate frequency: 10.7 MHz
‡ Standby power consumption 0.5 W
‡ Halogenated flame retardants are not used in the 
certain printed wiring boards.
Mexican model:
AC 127 V, 60 Hz
87.5 – 108.0 MHz (50 kHz step)
Tuning range:
North American models:
87.5 – 108.0 MHz (100 kHz step)
Other models:
Pan American models:
530 – 1,710 kHz (with 10 kHz tuning interval)
531 – 1,710 kHz (with 9 kHz tuning interval)
Mexican model: AC 127 V, 60 Hz
HCD-GTZ2/GTZ2i/GTZ3/GTZ3i
2
1. 
SERVICING  NOTES
  .............................................   3
2. DISASSEMBLY
2-1.   Disassembly Flow ...........................................................   4
2-2.   Case (Side-L/R) ..............................................................   4
2-3.   Top Case..........................................................................   5
2-4.   Front Panel Block ...........................................................   5
2-5.   DC Fan (M101) ...............................................................   6
2-6. Back 
Panel 
......................................................................   6
2-7.   MAIN Board ...................................................................   7
2-8.   DC Fan (M102) (GTZ3/GTZ3i), 
 POWER 
AMP 
Board 
......................................................  
7
2-9.  HUB Board, DMB19 Board ...........................................   8
2-10.  CD Mechanism Block (CDM88B-DVBU101) ...............   8
2-11.  Optical Pick-up Block (KHM-313CAB) ........................   9
2-12.  Belt (DLM3A) ................................................................   9
3. 
TEST  MODE 
 ............................................................   10
4. 
ELECTRICAL  CHECK 
 .........................................   12
5. DIAGRAMS
5-1.  Block Diagram - RF SERVO, USB Section - .................   13
5-2.  Block Diagram - MAIN Section - ...................................   14
5-3.  Block Diagram - AMP Section - .....................................   15
5-4. Block 
Diagram 
 
- PANEL, POWER SUPPLY Section - ...........................   16
5-5.  Printed Wiring Board - DMB19 Board - ........................   18
5-6.  Schematic Diagram - DMB19 Board (1/3) - ..................   19
5-7.  Schematic Diagram - DMB19 Board (2/3) - ..................   20
5-8.  Schematic Diagram - DMB19 Board (3/3) - ..................   21
5-9.  Printed Wiring Board - MAIN Board - ...........................   22
5-10.  Schematic Diagram - MAIN Board (1/3) - .....................   23
5-11.  Schematic Diagram - MAIN Board (2/3) - .....................   24
5-12.  Schematic Diagram - MAIN Board (3/3) - .....................   25
5-13.  Printed Wiring Board - HUB Board - .............................   26
5-14.  Schematic Diagram - HUB Board - ................................   27
TABLE  OF  CONTENTS
NOTES  ON  CHIP  COMPONENT  REPLACEMENT
•  Never reuse a disconnected chip component.
•  Notice that the minus side of a tantalum capacitor may be dam-
aged 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.
5-15.  Printed Wiring Board - POWER AMP Board - ..............   28
5-16.  Schematic Diagram - POWER AMP Board - .................   29
5-17.  Printed Wiring Board - DISPLAY Board - .....................   30
5-18.  Schematic Diagram - DISPLAY Board - ........................   31
5-19.  Printed Wiring Boards - PANEL Section - .....................   32
5-20.  Schematic Diagram - PANEL Section - ..........................   33
5-21.  Printed Wiring Board - TRANS1S Board 
 
(GTZ2: Chilean and Peruvian models) - .........................   34
5-22.  Schematic Diagram - TRANS1S Board 
 
(GTZ2: Chilean and Peruvian models) - .........................   35
5-23.  Printed Wiring Board - TRANSX Board 
 
(GTZ2: Mexican model/GTZ2i) - ...................................   36
5-24.  Schematic Diagram - TRANSX Board 
 
(GTZ2: Mexican model/GTZ2i) - ...................................   37
5-25. Printed Wiring Board 
 
- TRANS Board (GTZ3/GTZ3i) - ...................................   38
5-26. Schematic Diagram 
 
- TRANS Board (GTZ3/GTZ3i) - ...................................   39
6. 
EXPLODED  VIEWS
6-1. Case 
Section 
....................................................................  48
6-2.  Loading Panel Section ....................................................   49
6-3.  DISPLAY Board Section ................................................   50
6-4.  Front Panel Section .........................................................   51
6-5.  Back Panel Section .........................................................   52
6-6.  MAIN Board Section ......................................................   53
6-7. Chassis 
Section 
...............................................................  54
6-8.  CD Mechanism Section (CDM88B-DVBU101) ............   55
7. 
ELECTRICAL  PARTS  LIST
  ..............................   56
Accessories are given in the last of the electrical parts list.
CAUTION
Use of controls or adjustments or performance of procedures 
other than those specifi ed herein may result in hazardous radia-
tion exposure.
This appliance is classified as a CLASS 1 
LASER product. This marking is located on 
the rear exterior.
Ver. 1.1
Note: Refer to supplement-1 for the DISPLAY board of printed 
wiring board, schematic diagram and electrical parts list of 
Mexican model.
HCD-GTZ2/GTZ2i/GTZ3/GTZ3i
3
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.
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  ON  THE  DMB19  
BOARD
IC102 on the DMB19 board cannot exchange with single. When 
this part is damaged, exchange 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] button to select CD function.
3.  While pressing the [
x
] 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.
• Abbreviation
 AR  : 
Argentina 
model
  E2 
: 120V AC area in E model
  E3 
: 240V AC area in E model
 E51  : 
Chilean and Peruvian models 
MX 
: Mexican model
Model
Part No.
HCD-GTZ3: E2, E51
4-131-036-0[]
HCD-GTZ3: MX
4-131-036-3[]
HCD-GTZ3: AR
4-131-036-1[]
HCD-GTZ3i: AEP, UK
4-131-036-7[]
HCD-GTZ3: E3
4-131-036-8[]
HCD-GTZ2: E51
4-131-037-0[]
HCD-GTZ2: MX
4-131-037-3[]
HCD-GTZ2i: AEP
4-131-037-7[]
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. 1.1
HCD-GTZ2/GTZ2i/GTZ3/GTZ3i
4
SECTION  2
DISASSEMBLY
•  This set can be disassembled in the order shown below.
2-1.  DISASSEMBLY  FLOW
2-2. CASE 
(SIDE-L/R)
 (Page 
4)
2-3. TOP 
CASE
 (Page 
5)
2-4.  FRONT PANEL BLOCK
 (Page 
5)
2-5.  DC FAN (M101)
 (Page 
6)
2-6. BACK 
PANEL
 (Page 
6)
2-7. MAIN 
BOARD
 (Page 
7)
2-9.  HUB BOARD, DMB19 BOARD
 (Page 
8)
2-8.  DC FAN (M102) (GTZ3/GTZ3i), 
 POWER 
AMP 
BOARD
 (Page 
7)
2-10. CD MECHANISM BLOCK (CDM88B-DVBU101)
 (Page 
8)
2-11.  OPTICAL PICK-UP BLOCK (KHM-313CAB)
 (Page 
9)
SET
2-12. BELT (DLM3A)
 (Page 
9)
Note: Follow the disassembly procedure in the numerical order given.
2-2. CASE 
(SIDE-L/R)
(Mexican)
 
(Mexican)
 
2
 three screws
 (BVTP3 
u 8)
2
 three screws
 (BVTP3 
u 8)
4
 case (side-L)
4
 case (side-R)
1
 three screws
(case 3 TP2)
1
 screw (case 3 TP2)
1
 three screws
 
(case 3 TP2)
1
 screw (case 3 TP2)
3
3
Ver. 1.1
Page of 71
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Sony HCD-GTZ2 / HCD-GTZ2I / HCD-GTZ3 / HCD-GTZ3I / MHC-GTZ2 / MHC-GTZ2I / MHC-GTZ3 / MHC-GTZ3I Service Manual ▷ Download

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  • Here you can View online or download the Service Manual for the Sony HCD-GTZ2 / HCD-GTZ2I / HCD-GTZ3 / HCD-GTZ3I / MHC-GTZ2 / MHC-GTZ2I / MHC-GTZ3 / MHC-GTZ3I in PDF for free, which will help you to disassemble, recover, fix and repair Sony HCD-GTZ2 / HCD-GTZ2I / HCD-GTZ3 / HCD-GTZ3I / MHC-GTZ2 / MHC-GTZ2I / MHC-GTZ3 / MHC-GTZ3I Audio. Information contained in Sony HCD-GTZ2 / HCD-GTZ2I / HCD-GTZ3 / HCD-GTZ3I / MHC-GTZ2 / MHC-GTZ2I / MHC-GTZ3 / MHC-GTZ3I Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.