Read Sony DXA-WZ88D / MHC-WZ88D Service Manual online
SERVICE MANUAL
Sony Corporation
Audio Group
Published by Sony Engineering Corporation
Published by Sony Engineering Corporation
E Model
Australian Model
STEREO CASSETTE DECK AMPLIFIER
9-879-692-01
2005E1678-1
© 2005.05
© 2005.05
Ver. 1.0 2005.05
SPECIFICATIONS
DXA-WZ88D
DXA-WZ88D is the Tape Deck and Amplifier
section in MHC-WZ88D.
section in MHC-WZ88D.
TAPE deck
Model Name Using Similar Mechanism
NEW
Section
Tape Transport Mechanism Type
CWM43RR602
Amplifier section
The following measured at AC 127, 220, 240 V,
50/60 Hz (Saudi Arabian model only)
The following measured at AC 120, 220, 240 V,
50/60 Hz (except for Saudi Arabian model)
50/60 Hz (Saudi Arabian model only)
The following measured at AC 120, 220, 240 V,
50/60 Hz (except for Saudi Arabian model)
DIN power output at stereo mode (rated)
100 + 100 watts (6 ohms at
1 kHz, DIN)
1 kHz, DIN)
Continuous RMS power output (reference)
Front speaker:
Front speaker:
140 + 140 watts (6 ohms at
1 kHz, 10% THD)
1 kHz, 10% THD)
Center speaker:
40 watts (6 ohms at 1 kHz,
10% THD)
10% THD)
Surround speaker:
40 + 40 watts (6 ohms at
1 kHz, 10% THD)
1 kHz, 10% THD)
Inputs
VIDEO/SAT IN L/R (phono jacks):
VIDEO/SAT IN L/R (phono jacks):
Voltage 250 mV/450 mV,
impedance 47 kilohms
impedance 47 kilohms
MIC 1/2 (phone jack):
sensitivity 1 mV,
impedance 10 kilohms
impedance 10 kilohms
Outputs
VIDEO/SAT OUT L/R (phono jacks):
VIDEO/SAT OUT L/R (phono jacks):
Voltage 250 mV,
impedance 1 kilohms
impedance 1 kilohms
SUB WOOFER OUT:
Voltage 1 V,
impedance 1 kilohms
impedance 1 kilohms
VIDEO OUT (phono jacks):
max. output level
1 Vp-p, unbalanced, Sync
negative, load impedance
75 ohms
1 Vp-p, unbalanced, Sync
negative, load impedance
75 ohms
S VIDEO OUT (4-pin/mini-DIN jack):
Y: 1 Vp-p, unbalanced,
Sync negative,
C: 0.286 Vp-p,
load impedance 75 ohms
Sync negative,
C: 0.286 Vp-p,
load impedance 75 ohms
COMPONENT VIDEO OUT:
Y: 1 Vp-p, 75 ohms
P
P
B
/C
B
: 0.7 Vp-p, 75 ohms
P
R
/C
R
: 0.7 Vp-p, 75 ohms
PHONES (stereo mini jack):
accepts headphones of
8 ohms or more
8 ohms or more
FRONT L/R:
Use only the supplied
speaker SS-WZ88D
speaker SS-WZ88D
SURROUND L/R:
Use only the supplied
speaker SS-RSZ88D
speaker SS-RSZ88D
CENTER:
Use only the supplied
speaker SS-CTZ88D
speaker SS-CTZ88D
Tape deck section
Recording system
4-track 2-channel stereo
Frequency response
50 – 13,000 Hz (
±3 dB),
using Sony TYPE I tape
General
Power requirements
Argentina models:
Argentina models:
220 V AC, 50/60 Hz
Australian model:
230 – 240 V AC, 50/60 Hz
Saudi Arabian model:
120 – 127 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
Thai model:
220 V AC, 50/60 Hz
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
225 watts
Dimensions (w/h/d)
Amplifier/Tape deck:
Amplifier/Tape deck:
Approx. 255
× 134 ×
332 mm
Mass
Amplifier/Tape deck:
Amplifier/Tape deck:
Approx. 8.5 kg
Supplied accessories:
Remote Commander (1)
Batteries (2)
AM loop antenna (1)
FM lead antenna (1)
Speaker pads (20)
Speaker cords (5)
Video cord (1)
Batteries (2)
AM loop antenna (1)
FM lead antenna (1)
Speaker pads (20)
Speaker cords (5)
Video cord (1)
Design and specifications are subject to change
without notice.
without notice.
This system incorporates with Dolby* Digital and Dolby
Pro Logic (II) adaptive matrix surround decoder and the
DTS** Digital Surround System.
*
Pro Logic (II) adaptive matrix surround decoder and the
DTS** Digital Surround System.
*
Manufactured under license from Dolby Laboratories.
“Dolby,” “Pro Logic,” and the double-D symbol are
trademarks of Dolby Laboratories.
“Dolby,” “Pro Logic,” and the double-D symbol are
trademarks of Dolby Laboratories.
** Manufactured under license from Digital Theater
Systems, Inc.
“DTS” and “DTS Digital Surround” are trademarks of
Digital Theater Systems, Inc.
“DTS” and “DTS Digital Surround” are trademarks of
Digital Theater Systems, Inc.
2
DXA-WZ88D
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
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
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 viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
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.
also be added to ordinary solder.
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 the 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.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
TABLE OF CONTENTS
1.
GENERAL
...................................................................
3
2.
DISASSEMBLY
2-1.
Disassembly Flow ...........................................................
5
2-2.
Case .................................................................................
6
2-3.
Switching Power, DC Fan, Back Panel ...........................
7
2-4.
TC MAIN Board .............................................................
7
2-5.
FRONT AMP Board, SURROUND AMP Board ............
8
2-6.
Front Panel Section .........................................................
8
2-7.
Tape Mechanism Deck (CWM43RR602) .......................
9
2-8.
TC Holder (A), TC Holder (B), Lid (TC) Assy ............... 10
3.
ELECTRICAL ADJUSTMENTS
.......................... 11
4.
DIAGRAMS
4-1.
Block Diagram ................................................................ 13
4-2.
Printed Wiring Board – TC MAIN Section – ................. 14
4-3.
Schematic Diagram – TC MAIN Section (1/2) – ........... 15
4-4.
Schematic Diagram – TC MAIN Section (2/2) – ........... 16
4-5.
Printed Wiring Board – FRONT AMP Section – ........... 17
4-6.
Schematic Diagram – FRONT AMP Section – .............. 18
4-7.
Printed Wiring Board – SURROUND AMP Section – ... 19
4-8.
Schematic Diagram – SURROUND AMP Section – ...... 20
5.
EXPLODED VIEWS
5-1.
Front Panel Section ......................................................... 21
5-2.
Chassis Section ................................................................ 22
5-3.
Tape Mechanism Deck Section (CWM43RR602) .......... 23
6.
ELECTRICAL PARTS LIST
.................................. 24
MODEL IDENTIFICATION
– Rear Panel –
– Rear Panel –
Model
Part No.
EXCEPT EA, AUS models
2-580-718-0
[]
EA, AUS models
2-580-718-1
[]
• Abbreviation
AUS
: Australian model
EA
: Saudi Arabia model
PARTS No.
VOLTAGE SELECTOR Switch
Note:
DXA-WZ88D does not operate independently.
HCD-WZ88D is required to operate this.
In this case of a service, please connect HCD-WZ88D.
HCD-WZ88D is required to operate this.
In this case of a service, please connect HCD-WZ88D.
3
DXA-WZ88D
SECTION 1
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
Amplifier/Tape deck
Deck A wg (61, 62)
Deck B ws (61, 63, 71, 75)
Deck B ws (61, 63, 71, 75)
ALPHABETICAL ORDER
A – L
Z (Deck A-eject) wf (61, 62)
Z (Deck B-eject) wd (61, 62)
Z (Deck B-eject) wd (61, 62)
BUTTON DESCRIPTIONS
Unit
4
DXA-WZ88D
Do the following procedures 1 to 7 to hook up your system using the supplied cords and accessories.
Preparation
Place the components as shown below.
1
Connect the system control cables
from the DVD player/Tuner component
to the appropriate (same numbered)
SYSTEM CONTROL connectors on the
Amplifier/Tape deck component.
from the DVD player/Tuner component
to the appropriate (same numbered)
SYSTEM CONTROL connectors on the
Amplifier/Tape deck component.
Note
The system control cables are used to send audio and
electrical signals between the components for
interlinked operation.
electrical signals between the components for
interlinked operation.
Be sure to insert the connector horizontally until it
clicks into place. Otherwise the system will not operate
correctly.
clicks into place. Otherwise the system will not operate
correctly.
2
Connect the speakers.
Be sure to match the appropriate speaker
cords from the speaker terminals to the
corresponding SPEAKER terminals on the
Amplifier/Tape deck component as shown
below.
cords from the speaker terminals to the
corresponding SPEAKER terminals on the
Amplifier/Tape deck component as shown
below.
Getting Started
Hooking up the system
5
AM loop antenna
To front speaker (right)
To front speaker
(left)
(left)
FM lead antenna
DVD p
[HCD-WZ88D] [DXA-WZ88D]
layer/Tuner
Amplifier/Tape deck
To surround speaker (right)
To surround speaker (left)
To center
speaker
speaker
Amplifier/
Tape deck
Tape deck
DVD player/
Tuner
Tuner
Amplifier/Tape deck
