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Model
HCD-GTZ4 HCD-GTZ4I HCD-GTZ5 LBT-GTZ4I MHC-GTZ4 MHC-GTZ4I MHC-GTZ5
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74
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3.8 MB
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Service Manual
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Audio
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hcd-gtz4-hcd-gtz4i-hcd-gtz5-lbt-gtz4i-mhc-gtz4-mhc.pdf
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Sony HCD-GTZ4 / HCD-GTZ4I / HCD-GTZ5 / LBT-GTZ4I / MHC-GTZ4 / MHC-GTZ4I / MHC-GTZ5 Service Manual ▷ View online

SERVICE MANUAL
Sony Corporation
Published by Sony Techno Create Corporation
HCD-GTZ4/GTZ4i/GTZ5
SPECIFICATIONS
COMPACT DISC RECEIVER
9-889-503-03
2012F33-1
© 
2012.06
US Model
AEP Model
Australian Model
HCD-GTZ4i
E Model
HCD-GTZ4/GTZ5
Ver. 1.2  2012.06
•  HCD-GTZ4 is the amplifi er, USB, Disc player, tuner and 
iPod section in MHC-GTZ4.
•  HCD-GTZ4i is the amplifi er, USB, Disc player, tuner and 
iPod section in LBT-GTZ4i, MHC-GTZ4i.
•  HCD-GTZ5 is the amplifi er, USB, Disc player, tuner and 
iPod section in MHC-GTZ5.
Photo: HCD-GTZ5
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 Corporation.
MPEG Layer-3 audio coding technol-
ogy and patents licensed from Fraun-
hofer IIS and Thomson.
Windows Media is a registered trade-
mark of Microsoft Corporation in the 
United States and/or other countries.
“Memory Stick” is a trademark of 
Sony Corporation.
iPod is a trademark of Apple Inc., reg-
istered in the U.S. and other countries.
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
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
Amplifier section
HCD-GTZ5
Front speaker
Power output (rated): 110 W + 110 W 
(at 6 
:, 1 kHz, 1% THD)
RMS output power (reference): 
200 W + 200 W (per channel at 6 
:, 1 kHz, 10% THD)
Subwoofer
RMS output power (reference): 200 W 
(at 6 
:, 100 Hz, 10% THD)
HCD-GTZ4 / GTZ4i 
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): 90 W + 90 W 
(at 6 
:, 1 kHz, 1% THD)
RMS output power (reference): 
155 W + 155 W (per channel at 6 
:, 1 kHz, 10% THD)
Subwoofer
RMS output power (reference): 150 W 
(at 6 
:, 100 Hz, 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: accepts impedance of 6 
:
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
AM tuner section
Tuning range
Pan American and Oceanian models:
530 – 1,710 kHz (with 10 kHz tuning interval)
531 – 1,710 kHz (with 9 kHz tuning interval)
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
Power consumption
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-GTZ5 / GTZ4 / GTZ4i:
10.0 kg (22 lb 1 oz)
Design and specifications are subject to change without notice.
AUDIO POWER SPECIFICATION
POWER OUTPUT AND TOTAL HARMONIC 
DISTORTION:
(HCD-GTZ4i: US model only)
With 6 ohm loads, both channels driven, from 
120 Hz – 10 kHz; rated 110 watts per channel minimum RMS 
power, with no more than 0.7% total harmonic distortion from 
250 miliwatts to rated output.
The following are measured at
Mexican model:
AC 127 V, 60 Hz
Other models:
AC 120, 220, 240 V, 50/60 Hz
HCD-GTZ4i (US model)
The following are measured at AC 120 V 60 Hz 
Front speaker
RMS output power (reference): 
::SHUFKDQQHODWŸN+]7+'
Subwoofer
RMS output power (reference): 180 W 
DWŸ+]7+'
(AEP, Australian, Argentina models)
Tuning range:
North American model:
87.5 – 108.0 MHz (100 kHz step)
Other models: 
87.5 – 108.0 MHz (50 kHz step)
North American model: AC 120 V, 60 Hz
European models: AC 230 V, 50/60 Hz
Oceanian model: AC 230 – 240 V, 50/60 Hz
Mexican model: AC 127 V, 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
MHC-GTZ5: 250 W
MHC-GTZ4 / GTZ4i (Other models): 300 W
HCD-GTZ4i (American model): 240W
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‡+DORJHQDWHGIODPHUHWDUGDQWVDUHQRWXVHGLQWKHFHUWDLQ
  printed wiring boards. 
HCD-GTZ4/GTZ4i/GTZ5
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), 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
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 - TRANS Board - .........................   34
5-22.  Schematic Diagram - TRANS Board - ...........................   35
6. 
EXPLODED  VIEWS
6-1. Case 
Section 
....................................................................  44
6-2.  Loading Panel Section ....................................................   45
6-3.  DISPLAY Board Section ................................................   46
6-4.  Front Panel Section .........................................................   47
6-5.  Back Panel Section .........................................................   48
6-6.  MAIN Board Section ......................................................   49
6-7. Chassis 
Section 
...............................................................  50
6-8.  CD Mechanism Section (CDM88B-DVBU101) ............   51
7. 
ELECTRICAL  PARTS  LIST
  ..............................   52
Accessories are given in the last of the electrical parts list.
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.
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.
SAFETY  CHECK-OUT
After correcting the original service problem, perform the follow-
ing 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.
Ver. 1.1
HCD-GTZ4/GTZ4i/GTZ5
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.
NOTE  OF  REPLACING  THE  IC800  ON  THE  POWER  
AMP  BOARD (HCD-GTZ4i: US model only)
The IC800 on the POWER AMP board has been changed from 
the midway of production. Therefor, the IC800 of Former type is 
limited to the stock quantity of service parts.
Refer to service manual SUPPLEMENT-1 for handling method. 
(HCD-GTZ4i: US model only)
MODEL  IDENTIFICATION
– Back Panel –
PART No.
• Abbreviation
 AR  : 
Argentina 
model
 AUS : 
Australian 
model
  E2 
: 120V AC area in E model
 E51  : 
Chilean and Peruvian models 
MX 
: Mexican model
Model
Part No.
HCD-GTZ5: E2, E51
4-124-494-0[]
HCD-GTZ5: AR
4-124-494-1[]
HCD-GTZ5: MX
4-124-494-3[]
HCD-GTZ4: E2, E51
4-131-035-0[]
HCD-GTZ4: AR
4-131-035-1[]
HCD-GTZ4i: AUS
4-131-035-6[]
HCD-GTZ4i: AEP
4-131-035-7[]
HCD-GTZ4i: US
4-131-035-8[]
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.
HOW  TO  OPEN  THE  TRAY  WHEN  POWER  SWITCH  
TURN  OFF
Note: Work after removing the case (side-R) referring to “2-2. CASE 
(SIDE-L/R)” on disassembly (page 4).
gear
lever
1
 Turn a gear by
 
a driver till a lever
 
rises up to the
 
position of the figure.
state of opening the CD tray
Ver. 1.2
HCD-GTZ4/GTZ4i/GTZ5
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), 
 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)
4
 case (side-R)
1
 three screws
 
(case 3 TP2)
3
2
 three screws
 (BVTP3 
u 8)
4
 case (side-L)
1
 three screws
(case 3 TP2)
1
 screw (case 3 TP2)
3
1
 screw (case 3 TP2)
Ver. 1.1
Page of 74
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Sony HCD-GTZ4 / HCD-GTZ4I / HCD-GTZ5 / LBT-GTZ4I / MHC-GTZ4 / MHC-GTZ4I / MHC-GTZ5 Service Manual ▷ Download

  • DOWNLOAD Sony HCD-GTZ4 / HCD-GTZ4I / HCD-GTZ5 / LBT-GTZ4I / MHC-GTZ4 / MHC-GTZ4I / MHC-GTZ5 Service Manual ↓ Size: 3.8 MB | Pages: 74 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony HCD-GTZ4 / HCD-GTZ4I / HCD-GTZ5 / LBT-GTZ4I / MHC-GTZ4 / MHC-GTZ4I / MHC-GTZ5 in PDF for free, which will help you to disassemble, recover, fix and repair Sony HCD-GTZ4 / HCD-GTZ4I / HCD-GTZ5 / LBT-GTZ4I / MHC-GTZ4 / MHC-GTZ4I / MHC-GTZ5 Audio. Information contained in Sony HCD-GTZ4 / HCD-GTZ4I / HCD-GTZ5 / LBT-GTZ4I / MHC-GTZ4 / MHC-GTZ4I / MHC-GTZ5 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.