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Block Diagram - Sony DXA-WZ8D Service Manual

Stereo cassette deck amplifier.
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Q Q

4-1. Block Diagram

3 7 6 3 1 5 1 5 0
TAPE DECK
T E
L
1 3 9 4 2 2 9 6 5 1 3
BLOCK
A SHUT
B SHUT
Q351,355
SOLENOID
A TRG
DRIVE
Q352,354
SOLENOID
B TRG
DRIVE
IC301
IC303
L-PB
5
6
2
7
1
5
R-PB
R-CH
7
BIAS
8
16
CNT BIAS
L-REC
R-REC
R-CH
Q312,314
Q308-310
REC SWITCH
REC CONT
Q303
Q306,307
L-PB
PB SWITCH
PB CONT
Q304
Q305
R-PB
R-CH
BIAS
BIAS
T301
SWITCH
CONT
BIAS
E HOT
Q301
BIAS
GND
OSC
A PLAY
B PLAY
A HALF
w w w
B HALF
REC(FWD)
REC (REW)
Q353,356
MOTOR
CAP M+
DRIVE
.
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HCD-WZ8D
A SHUT
B SHUT
A TRG
B TRG
PB-L
R-CH
PB-R
R-CH
REC-R
REC-L
AMP+9V
AMP+9V
IC251
I/O EXPANDER
23
A/B
DO2
25
I/O EXP DATA OUT
REC/PB
DI
26
I/O EXP DATA IN
22
CLK
3
I/O EXP CLK
21
BIAS
LATCH
4
I/O EXP LAT
IC201
5
A PLAY
1
PROTECT
11
3
PROTECTOR
9
B PLAY
4
6
A HALF
8
B HALF
TH VACS
12
REC(FWD)
FR RY
20
7
x
a o
u 1 6 3
10
REC(REW)
SUR RY
19
y
PWR RY
17
24
CAP-M
FAN CNT
18
i
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8
POWER AMP
IC501
9
FRONT-L
14
15
Q501
8
FRONT-R
MUTE
12
Q521
PROTECT
DETECTOR
Q536,537
Q536,537
MUTE
Q533
STK MUTE
CONT
MUTE
Q534,535
OVER HEAT
DETECTOR
D501
Q531,532
TH
VACS
DBFB FB
IC701
POWER AMP(SL,SR,C)
8
REAR-L
3
Q701
REAR-R
9
MUTE
Q711
PROTECT
DETECTOR
CENTER
13
15
Q731
14
MUTE
Q741
PROTECT
Q
Q
DETECTOR
3
7
6
3
1
Q204,206
MUTE
TA MUTE
CONT
D742
DVD MUTE
Q202
PROTECT
SWITCH
M+9V
DVD AC
DVD AC
UNREG
EVER +4V
D251
CN CHECK
IC251
VCC
c o
.
11
11
2
4
9
9
8
TM401(1/2)
SPEAKER
FRONT L
R-CH
R-CH
D402
FRONT R
+VL
Q403
RY402
Q209,211,212
RELAY
FAN
DRIVE
FAN301
DRIVE
TH531
Q213
FAN
CONTROL
TM401(2/2)
RY401
SURR L
R-CH
SURR R
RY403
CENTER
5
1
5
0
Q401
8
9
2
4
9
RELAY
DRIVE
+VH
-VH
+VL
-VL
Q203,205
AC
DET
IC302
D301
+9V
M+9V
3
1
REG
Q101
+3.3V
D+3.3V
REG
EVER+4V
m
DXA-WZ8D
2
9
9
• R-CH is omitted due to same as L-CH.
• Signal Path
: AUDIO
: PB (TAPE)
: REC (TAPE)
8
2
9
9
T302
POWER
TRANSFORMER
D102
AC1
E2, E3, E15,EA,
MY, SP, PH
AC1
S601
VOLTAGE
SELECTOR
AUS
D101
AC2
JW604
KR, TH
JW603
AC2
AEP, UK, RU
D201
JW602
D202
AC
IN
D103
AC3
AC3
Q601
RY601
AC4
RELAY
DRIVE
AC4
SWITCHING
REGULATOR

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