Sony HCD-VR70 - Power Section; Display Section

HCD-VR50/VR70
– POWER SECTION –
– 29 –
– 30 –
+VL
-VL
RECT
D832
F-RELAY
L-CH IN
EVER +5V
MIC 2
MIC 1
MIC VOLUME
RV850
MIC AMP
IC850 (1/2)
8
2
LPF 1 OUT
LPF 2 OUT
ECHO CONTROL
IC851
11
9
LPF 2 IN
OP 2 IN
10
OP 2 OUT
1
LPF 1 IN
MIC LEVEL
RV851
MIC AMP
IC850 (2/2)
STK-MUTE
15
13
12
8
THERMAL
SENSOR
5
6
VOLUME
CONTROL
22
POWER AMP & VOLUME CONTROL
IC801
VOLUME
CONTROL
D802, 852
THERMAL
SENSOR
Q831-832
L-CH THERMAL
PROTECT SWITCH
Q801
MUTE
CONTROL
Q834
MUTE
SWITCH
Q803
HEAD PHONE
MUTE
Q833
MUTE
DRIVE
Q804
HP-MUTE
PROTECT
09
D804
MIC-SIG
J803
TM401
PHONES
L
R
FRONT
SPEAKER
RELAY
DRIVER
Q401, 402
R-CH
RY401
SWITCH
Q904
–35V REG
Q903
VF (–35V)
VF
VF
RECT
D833-836
+UNREG. 12V
UN +10V
UN –10V
RECT
D841-844
AC-H
POWER
TRANSFORMER
T951
VOLTAGE
SELECTOR
VS901
AC
IN
MAIN (1/2)
SECTION
G
(Page 24)
MAIN (2/2)
SECTION
I
(Page 25)
MIC-SIG
HP.SW
DISPLAY
SECTION
K
(Page 31)
MAIN (1/2)
SECTION
C
(Page 23)
MAIN (2/2)
SECTION
H
(Page 25)
J801
MAIN (1/2)
SECTION
E
(Page 24)
MAIN (2/2)
SECTION
L
(Page 26)
• SIGNAL PATH
: FM
• R CH : Same as L ch
PROTECT
SWITCH
Q439
LATCH
DRIVER
Q437
PROTECT
SWITCH
Q431
PROTECT
DC AMP
Q433-434
LATCH
DRIVER
Q432
+VH
-VH
RECT
D831
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
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