Sony DXA-WZ8D / MHC-WZ8D Service Manual ▷ View online
DXA-WZ8D
AEP Model
UK Model
E Model
Australian Model
SERVICE MANUAL
STEREO CASSETTE DECK AMPLIFIER
SPECIFICATIONS
Ver 1.0 2003. 06
• DXA-WZ8D is deck and amplifier
section in MHC-WZ8D.
Amplifier section
European and Russian models:
DIN power output at stereo mode (rated)
75 + 75 watts (6 ohms at
1 kHz, DIN)
1 kHz, DIN)
Continuous RMS power output (reference)
Front speaker:
Front speaker:
100 + 100 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)
Music power output (reference)
Front speaker:
Front speaker:
200 + 200 watts (6 ohms at
1 kHz, 10% THD)
1 kHz, 10% THD)
Center speaker:
80 watts (6 ohms at 1 kHz,
10% THD)
10% THD)
Surround speaker:
80 + 80 watts (6 ohms at
1 kHz, 10% THD)
1 kHz, 10% THD)
Other models:
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
MD (VIDEO) IN L/R (phono jacks):
MD (VIDEO) IN L/R (phono jacks):
Voltage 450 mV/250 mV,
impedance 47 kilohms
impedance 47 kilohms
MIC (phone jack):
sensitivity 1 mV,
impedance 10 kilohms
impedance 10 kilohms
Outputs
MD (VIDEO) OUT L/R (phono jacks):
MD (VIDEO) 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-WZ8/WZ8E
speaker SS-WZ8/WZ8E
SURROUND L/R:
Use only the supplied
speaker SS-RS400/RS410
speaker SS-RS400/RS410
CENTER:
Use only the supplied
speaker SS-CT400/CT410
speaker SS-CT400/CT410
Tape deck section
Recording system
4-track 2-channel, stereo
Frequency response
50 – 13,000 Hz (
±3 dB),
using Sony TYPE I
cassettes
cassettes
General
Power requirements
European and Russian models:
European and Russian models:
230 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
Korean model:
220 V AC, 60 Hz
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-877-416-01
2003F1678-1
© 2003.06
Tape deck
Section
Model Name Using Similar Mechanism
DXA-WZ5
Tape Transport Mechanism Type
CWM43RR23
— Continued on next page —
2
DXA-WZ8D
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.
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
• Notice that the minus side of a tantalum capacitor may be
damaged 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.
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
2-4. FRONT AMP Board and SURROUND AMP Board ···· 7
2-5. Front Panel Assy ···························································· 7
2-6. Tape Mechanism Deck (CWM43RR23) ······················· 8
2-7. Lid (TC) Assy, Holder (A) Assy and Holder (B) Assy ·· 8
2-2. Switching Power, DC Fan and Back Panel ··················· 6
2-3. TC MAIN Board ··························································· 6
2-4. FRONT AMP Board and SURROUND AMP Board ···· 7
2-5. Front Panel Assy ···························································· 7
2-6. Tape Mechanism Deck (CWM43RR23) ······················· 8
2-7. Lid (TC) Assy, Holder (A) Assy and Holder (B) Assy ·· 8
3. ELECTRICAL ADJUSTMENTS
································· 9
4. DIAGRAMS
······································································ 10
4-1. Block Diagram ···························································· 11
4-2. Printed Wiring Board – TC MAIN Board – ··············· 12
4-3. Schematic Diagram
4-2. Printed Wiring Board – TC MAIN Board – ··············· 12
4-3. Schematic Diagram
– TC MAIN Board (1/2) – ······ 13
– TC MAIN Board (2/2) – ······ 14
– TC MAIN Board (2/2) – ······ 14
4-4. Printed Wiring Board – FRONT AMP Board – ········· 15
4-5. Schematic Diagram
4-5. Schematic Diagram
– FRONT AMP Board – ········· 16
4-6. Printed Wiring Board – SURROUND AMP Board – 15
4-7. Schematic Diagram
4-7. Schematic Diagram
– SURROUND AMP Board – 16
5. EXPLODED VIEWS
5-1. Front Panel Section ····················································· 17
5-2. Chassis Section ···························································· 18
5-3. Tape Mechanism Deck Section ··································· 19
5-2. Chassis Section ···························································· 18
5-3. Tape Mechanism Deck Section ··································· 19
6. ELECTRICAL PARTS LIST
······································· 20
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.)
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
• 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!
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.
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.
[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.
DXA-WZ5],except for the speaker) to the service station.
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
European and Russian models:
European and Russian models:
235 watts
0.3 watts (in Power Saving
Mode)
0.3 watts (in Power Saving
Mode)
Other models:
260 watts
Dimensions (w/h/d)
Amplifier/Tape deck:
Amplifier/Tape deck:
Approx. 255
× 135 ×
330 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.
MODEL IDENTIFICATION
— BACK PANEL —
• 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
PARTS No.
VOLTAGE SELECTOR Switch
MY
: Malaysia model
PH
: Philippines model
RU
: Russian model
SP
: Singapore model
TH
: Thai model
MODEL
AEP, UK models
EA model
E2,E3,E15 models
AUS model
TH model
PARTS No.
4-244-898-0
s
4-244-898-1
s
4-244-898-2
s
4-244-898-4
s
4-244-898-6
s
MODEL
KR model
MY,SP models
RU model
PH model
PARTS No.
4-244-898-7
s
4-244-898-8
s
4-244-898-9
s
4-247-937-0
s
3
DXA-WZ8D
This section is extracted
from instruction manual.
from instruction manual.
SECTION 1
GENERAL
Main unit
Deck A wl
Deck B wh
A Z (eject) wk (39)
Z B (eject) wj (39)
Z B (eject) wj (39)
ALPHABETICAL ORDER
A – L
BUTTON DESCRIPTIONS
Amplifier/Tape deck
4
DXA-WZ8D
Perform the following procedures 1 to 7 to hook up your system using the supplied cords and
accessories. European model is used for illustration purpose.
accessories. European model is used for illustration purpose.
Preparation
Place the components as shown below.
1
Connect the system control cables to
the SYSTEM CONTROL connectors on
the tape deck.
the SYSTEM CONTROL connectors on
the tape deck.
Connect to the same numbered jack in the
order indicated on the rear panel.
order indicated on the rear panel.
Note
The system cable is used to send signals and electricity
between the components for interlinked operation.
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
tape deck.
cords from the speaker terminals to the
corresponding SPEAKER terminals on the
tape deck.
Getting Started
Hooking up the system
AM loop antenna
To front speaker (right)
To front speaker
(left)
(left)
FM lead antenna
CD/DVD player/Tuner
Amplifier/Tape deck
To surround speaker (right)
To surround speaker (left)
To center
speaker
speaker
Amplifier/
Tape deck
Tape deck
CD/DVD player/
Tuner
Tuner