Read Sony HCD-ZX70DVD / MHC-ZX70DVD Service Manual online
SERVICE MANUAL
Amplifier section
AUDIO POWER SPECIFICATIONS:
(U.S.A. model only)
(U.S.A. model only)
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
with 8 ohm loads both channels driven, from 120-
10,000 Hz; rates 90 watts per channel minimum RMS
power, with no more than 10% total harmonic
distortion from 250 milliwatts to rated output.
DISTORTION:
with 8 ohm loads both channels driven, from 120-
10,000 Hz; rates 90 watts per channel minimum RMS
power, with no more than 10% total harmonic
distortion from 250 milliwatts to rated output.
Total harmonics distortion
Less than 0.07%
(8 ohms at 1 kHz, 50 W)
(8 ohms at 1 kHz, 50 W)
Center Speaker:
Continuous RMS power output
40 watts
(8 ohms at 1 kHz,
10% THD)
(8 ohms at 1 kHz,
10% THD)
Rear Speaker:
Continuous RMS power output
40 + 40 watts
(8 ohms at 1 kHz,
10% THD)
(8 ohms at 1 kHz,
10% THD)
Canadian model:
Front Speaker:
Continuous RMS power output
100 + 100 watts
(8 ohms at 1 kHz,
10% THD)
(8 ohms at 1 kHz,
10% THD)
Total harmonics distortion
Less than 0.07%
(8 ohms at 1 kHz, 50 W)
(8 ohms at 1 kHz, 50 W)
Center Speaker:
Continuous RMS power output
40 watts
(8 ohms at 1 kHz,
10% THD)
(8 ohms at 1 kHz,
10% THD)
Rear Speaker:
Continuous RMS power output
40 + 40 watts
(8 ohms at 1 kHz,
10% THD)
(8 ohms at 1 kHz,
10% THD)
European model:
Front Speaker:
DIN power output (rated) 80 + 80 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
100 + 100 watts
(8 ohms at 1 kHz,
10% THD)
(8 ohms at 1 kHz,
10% THD)
Music power output (reference)
170 + 170 watts
(8 ohms at 1 kHz,
10% THD)
(8 ohms at 1 kHz,
10% THD)
Center Speaker:
DIN power output (rated) 30 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
40 watts
(8 ohms at 1 kHz,
10% THD)
(8 ohms at 1 kHz,
10% THD)
Music power output (reference)
60 watts
(8 ohms at 1 kHz,
10% THD)
(8 ohms at 1 kHz,
10% THD)
COMPACT DISC DECK RECEIVER
SPECIFICATIONS
HCD-ZX70DVD
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
HCD-ZX70DVD is the Amplifier, DVD/CD
player, Tape Deck and Tuner section in
MHC-ZX70DVD.
player, Tape Deck and Tuner section in
MHC-ZX70DVD.
– Continued on next page –
Model Name Using Similar Mechanism
NEW
DVD
DVD Mechanism Type
CDM53J-DVBU1
Section
Base Unit Name
DVBU1
Optical Pick-up Name
KHM-220AAA
TAPE
Model Name Using Similar Mechanism
HCD-ZX30AV
Section
Tape Transport Mechanism Type
TCM-230AWR12
This stereo system is equipped with the Dolby B-type noise
reduction system*.
* Manufactured under license from Dolby Laboratories
reduction system*.
* Manufactured under license from Dolby Laboratories
Licensing Corporation.
DOLBY and the double-D symbol ; are trademarks of
Dolby Laboratories Licensing Corporation.
DOLBY and the double-D symbol ; are trademarks of
Dolby Laboratories Licensing Corporation.
This system incorporates Dolby* Digital and Pro Logic
Surround.
* Manufactured under license from Dolby Laboratories.
Surround.
* Manufactured under license from Dolby Laboratories.
“Dolby”, “AC-3”, “Pro Logic” and the double-D symbol ;
are trademarks of Dolby Laboratories.
Confidential unpublished Works. © 1992-1997 Dolby
Laboratories, Inc. All rights reserved.
are trademarks of Dolby Laboratories.
Confidential unpublished Works. © 1992-1997 Dolby
Laboratories, Inc. All rights reserved.
9-929-264-15
Sony Corporation
2004I05-1
Audio Group
© 2004.09
Published by Sony Engineering Corporation
Ver 1.4 2004.09
2
Inputs
VIDEO (AUDIO) IN:
VIDEO (AUDIO) IN:
voltage 250 mV,
(phono jacks)
impedance 47 kilohms
MD IN:
voltage 450 mV,
(phono jacks)
impedance 47 kilohms
MIC:
sensitivity 1 mV,
(mini jack)
impedance 10 kilohms
(Asian model only)
Outputs
MD OUT:
MD OUT:
voltage 250 mV
(phono jacks)
impedance 1 kilohms
VIDEO OUT:
max. output level
(phono jack)
1Vp-p, unbalanced,
Sync negative, load impedance
75 ohms
Sync negative, load impedance
75 ohms
S-VIDEO OUT:
Y: 1Vp-p, unbalanced,
(4-pin/mini-DIN jack)
Sync negative,
C: 0.286Vp-p,
load impedance 75 ohms
C: 0.286Vp-p,
load impedance 75 ohms
PHONES:
accepts headphones of
(stereo mini jack)
8 ohms or more
FRONT SPEAKER:
accepts impedance of 8 to 16 ohms
REAR SPEAKER:
accepts impedance of 8 to 16 ohms
CENTER SPEAKER:
accepts impedance of 8 to 16 ohms
WOOFER OUT:
Voltage 1 V, impedance 1 kilohms
DVD player section
Laser
Semiconductor laser
Frequency response
DVD (PCM 48 kHz):
2 Hz – 22 kHz = (
2 Hz – 22 kHz = (
±
1 dB)
CD: 2Hz – 20 kHz = (
±
1 dB)
Signal-to-noise ratio
More than 90 dB
Dynamic range
More than 90 dB
Video color system format
NTSC, PAL
DIGITAL OUT OPTICAL
(Square optical connector jack, rear panel)
Wavelength
(Square optical connector jack, rear panel)
Wavelength
660 nm
Output Level
–18 dBm
Tape player section
Recording system
4-track 2-channel stereo
Frequency response
40 – 13,000 Hz (
±
3 dB),
(DOLBY NR OFF)
using Sony TYPE I cassette
40 – 14,000 Hz (
40 – 14,000 Hz (
±
3 dB),
using Sony TYPE II cassette
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
North American model:
North American model:
87.5 – 108.0 MHz (100 kHz step)
Other models:
87.5 – 108.0 MHz (50 kHz step)
Antenna
FM antenna
Antenna terminals
75 ohm unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
North American model:
North American model:
530 – 1,710 kHz
(with the interval set at
10 kHz)
531 – 1,710 kHz
(with the interval set at
9 kHz)
(with the interval set at
10 kHz)
531 – 1,710 kHz
(with the interval set at
9 kHz)
European and Middle Eastern models:
531 – 1,602 kHz
(with the interval set at
9 kHz)
(with the interval set at
9 kHz)
Other models:
531 – 1,602 kHz
(with the interval set at
9 kHz)
530 – 1,710 kHz
(with the interval set at
10 kHz)
(with the interval set at
9 kHz)
530 – 1,710 kHz
(with the interval set at
10 kHz)
Antenna
AM loop antenna
Antenna terminals
External antenna terminal
Intermediate frequency
450 kHz
Music power output (reference)
60 + 60 watts
(8 ohms at 1 kHz,
10% THD)
(8 ohms at 1 kHz,
10% THD)
Other models:
The following measured at AC 120/220/240 V,
50/60 Hz
50/60 Hz
Front Speaker:
DIN power output (rated) 95 + 95 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
120 + 120 watts
(8 ohms at 1 kHz,
10% THD)
(8 ohms at 1 kHz,
10% THD)
Center Speaker:
DIN power output (rated) 30 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
40 watts
(8 ohms at 1 kHz,
10% THD)
(8 ohms at 1 kHz,
10% THD)
Rear Speaker:
DIN power output (rated) 30 + 30 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
40 + 40 watts
(8 ohms at 1 kHz,
10% THD)
(8 ohms at 1 kHz,
10% THD)
General
Power requirements
North American model:
North American model:
120 V AC, 60 Hz
European model:
230 V AC, 50/60 Hz
Australian model:
230 – 240 V AC, 50/60 Hz
Mexican model:
120 V AC, 60 Hz
Thai and Chinese models: 220 V AC, 50/60 Hz
Other models:
Other models:
120 V, 220 V or
230 – 240 V AC, 50/60 Hz
Adjustable with voltage selector
230 – 240 V AC, 50/60 Hz
Adjustable with voltage selector
Power consumption
North American model:
North American model:
220 watts
European model:
220 watts
Other models:
230 watts
Dimensions (w/h/d)
Approx. 250 x 375 x 395 mm
Mass
North American model:
North American model:
Approx. 13.2 kg
European model:
Approx. 13.0 kg
Other models:
Approx. 13.5 kg
Design and specifications are subject to change
without notice.
without notice.
Rear Speaker:
DIN power output (rated) 30 + 30 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
40 + 40 watts
(8 ohms at 1 kHz,
10% THD)
(8 ohms at 1 kHz,
10% THD)
3
1.
SERVICING NOTES
...............................................
5
2.
GENERAL
...................................................................
7
3.
DISASSEMBLY
.........................................................
9
4.
ASSEMBLY
................................................................. 18
5.
MECHANICAL ADJUSTMENT
.......................... 21
6.
DIAGRAMS
6-1. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 23
6-2. Printed Wiring Board – TK Board – ............................... 24
6-3. Schematic Diagram – TK Board – ................................. 25
6-4. Printed Wiring Board – MB Board (Side A) – ............... 26
6-5. Printed Wiring Board – MB Board (Side B) – ............... 27
6-6. Schematic Diagram – MB Board (1/10) – ...................... 28
6-7. Schematic Diagram – MB Board (2/10) – ...................... 29
6-8. Schematic Diagram – MB Board (3/10) – ...................... 30
6-9. Schematic Diagram – MB Board (4/10) – ...................... 31
6-10. Schematic Diagram – MB Board (5/10) – ...................... 32
6-11. Schematic Diagram – MB Board (6/10) – ...................... 33
6-12. Schematic Diagram – MB Board (7/10) – ...................... 34
6-13. Schematic Diagram – MB Board (8/10) – ...................... 35
6-14. Schematic Diagram – MB Board (9/10) – ...................... 36
6-15. Schematic Diagram – MB Board (10/10) – ................... 37
6-16. Printed Wiring Board – IF Board – ................................ 38
6-17. Schematic Diagram – IF Board – ................................... 39
6-18. Printed Wiring Boards – CDM Section – ....................... 40
6-19. Schematic Diagram – CDM Section – ........................... 41
6-20. Printed Wiring Board – AUDIO Board – ....................... 42
6-21. Schematic Diagram – AUDIO Board – .......................... 43
6-22. Printed Wiring Board – LEAF SW Board – ................... 44
6-23. Schematic Diagram – LEAF SW Board – ...................... 44
6-24. Printed Wiring Board – MAIN Board – ......................... 45
6-25. Schematic Diagram – MAIN Board (1/5) – ................... 46
6-26. Schematic Diagram – MAIN Board (2/5) – ................... 47
6-27. Schematic Diagram – MAIN Board (3/5) – ................... 48
6-28. Schematic Diagram – MAIN Board (4/5) – ................... 49
6-29. Schematic Diagram – MAIN Board (5/5) – ................... 50
6-30. Printed Wiring Board – MIC Board – ............................ 51
6-3. Schematic Diagram – TK Board – ................................. 25
6-4. Printed Wiring Board – MB Board (Side A) – ............... 26
6-5. Printed Wiring Board – MB Board (Side B) – ............... 27
6-6. Schematic Diagram – MB Board (1/10) – ...................... 28
6-7. Schematic Diagram – MB Board (2/10) – ...................... 29
6-8. Schematic Diagram – MB Board (3/10) – ...................... 30
6-9. Schematic Diagram – MB Board (4/10) – ...................... 31
6-10. Schematic Diagram – MB Board (5/10) – ...................... 32
6-11. Schematic Diagram – MB Board (6/10) – ...................... 33
6-12. Schematic Diagram – MB Board (7/10) – ...................... 34
6-13. Schematic Diagram – MB Board (8/10) – ...................... 35
6-14. Schematic Diagram – MB Board (9/10) – ...................... 36
6-15. Schematic Diagram – MB Board (10/10) – ................... 37
6-16. Printed Wiring Board – IF Board – ................................ 38
6-17. Schematic Diagram – IF Board – ................................... 39
6-18. Printed Wiring Boards – CDM Section – ....................... 40
6-19. Schematic Diagram – CDM Section – ........................... 41
6-20. Printed Wiring Board – AUDIO Board – ....................... 42
6-21. Schematic Diagram – AUDIO Board – .......................... 43
6-22. Printed Wiring Board – LEAF SW Board – ................... 44
6-23. Schematic Diagram – LEAF SW Board – ...................... 44
6-24. Printed Wiring Board – MAIN Board – ......................... 45
6-25. Schematic Diagram – MAIN Board (1/5) – ................... 46
6-26. Schematic Diagram – MAIN Board (2/5) – ................... 47
6-27. Schematic Diagram – MAIN Board (3/5) – ................... 48
6-28. Schematic Diagram – MAIN Board (4/5) – ................... 49
6-29. Schematic Diagram – MAIN Board (5/5) – ................... 50
6-30. Printed Wiring Board – MIC Board – ............................ 51
TABLE OF CONTENTS
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
0
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
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 PUB-
LISHED BY SONY.
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
6-31. Schematic Diagram – MIC Board – ............................... 51
6-32. Printed Wiring Boards – FRONT AMP/HP Boards – .... 52
6-33. Schematic Diagram – FRONT AMP/HP Boards – ........ 53
6-34. Printed Wiring Board – SURR AMP Board – ................ 54
6-35. Schematic Diagram – SURR AMP Board – ................... 55
6-36. Printed Wiring Boards – PANEL/CD SW Boards – ...... 56
6-37. Schematic Diagram – PANEL/CD SW Boards – ........... 57
6-38. Printed Wiring Board – SUB PANEL Board – .............. 58
6-39. Schematic Diagram – SUB PANEL Board – ................. 59
6-40. Printed Wiring Boards
6-32. Printed Wiring Boards – FRONT AMP/HP Boards – .... 52
6-33. Schematic Diagram – FRONT AMP/HP Boards – ........ 53
6-34. Printed Wiring Board – SURR AMP Board – ................ 54
6-35. Schematic Diagram – SURR AMP Board – ................... 55
6-36. Printed Wiring Boards – PANEL/CD SW Boards – ...... 56
6-37. Schematic Diagram – PANEL/CD SW Boards – ........... 57
6-38. Printed Wiring Board – SUB PANEL Board – .............. 58
6-39. Schematic Diagram – SUB PANEL Board – ................. 59
6-40. Printed Wiring Boards
– TRANS/SUB TRANS Boards – .................................. 60
6-41. Schematic Diagram
– TRANS/SUB TRANS Boards – .................................. 61
7.
EXPLODED VIEWS
................................................ 65
8.
ELECTRICAL PARTS LIST
............................... 73
4
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.
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
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.
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” indica-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples 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)
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples 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)
Fig. A.
Using an AC voltmeter to check AC leakage.
1.5 k
Ω
0.15
µ
F
AC
voltmeter
(0.75 V)
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing 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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
other than those specified herein may result in hazardous ra-
diation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
exceeding the limit for Class 1.
The following caution label is located inside the unit.
