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Table Of Contents - Sony DXA-WZ8D Service Manual

Stereo cassette deck amplifier.
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DXA-WZ8D
QQ
3 7 63 1515 0
Other models:
120 V, 220 V or
230 - 240 V AC, 50/60 Hz
Adjustable with voltage
selector
Power consumption
European and Russian models:
235 watts
0.3 watts (in Power Saving
Mode)
Other models:
260 watts
Dimensions (w/h/d)
Approx. 255 × 135 ×
Amplifier/Tape deck:
330 mm
Mass
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)
Design and specifications are subject to change
without notice.
[When bringing in the equipment for service]
In case of repairing, please bring the entire system set([HCD-WZ5,
DXA-WZ5],except for the speaker) to the service station.
Unleaded solder
TE
L 13942296513
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 flow) 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.
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.
www
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.
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TABLE OF CONTENTS

1. GENERAL
·········································································· 3
2. DISASSEMBLY ························································· 5
2-1. Case ··············································································· 5
2-2. Switching Power, DC Fan and Back Panel ··················· 6
2-3. TC MAIN Board ··························································· 6
2-5. Front Panel Assy ···························································· 7
2-6. Tape Mechanism Deck (CWM43RR23) ······················· 8
······································································ 10
4-1. Block Diagram ···························································· 11
4-2. Printed Wiring Board - TC MAIN Board - ··············· 12
5-1. Front Panel Section ····················································· 17
5-2. Chassis Section ···························································· 18
5-3. Tape Mechanism Deck Section ··································· 19
Q Q
3
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MODEL IDENTIFICATION
- BACK PANEL -
VOLTAGE SELECTOR Switch
MODEL
PARTS No.
AEP , UK models
4-244-898-0s
EA model
4-244-898-1s
E2,E3,E15 models
4-244-898-2s
AUS model
4-244-898-4s
TH model
4-244-898-6s
• Abbreviation
AUS : Australian model
E2
: 120V AC area in E model
E3
: 240V AC area in E model
E15
: 220-240V AC area in E model
EA
: Saudi Arabia model
KR
: Korean model
SAFETY-RELATED COMPONENT WARNING!!
co
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.
9 4
2 8
································· 9
- TC MAIN Board (1/2) - ······ 13
- TC MAIN Board (2/2) - ······ 14
- FRONT AMP Board - ········· 16
······································· 20
0 5
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PARTS No.
MODEL
PARTS No.
KR model
4-244-898-7s
MY,SP models
4-244-898-8s
RU model
4-244-898-9s
PH model
4-247-937-0s
MY
: Malaysia model
PH
: Philippines model
RU
: Russian model
SP
: Singapore model
TH
: Thai model
m
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