Power Section; Display Section - Sony HCD-VR50 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
– POWER SECTION –
MIC 1
MIC 2
MAIN (1/2)
G
SECTION
(Page 24)
MAIN (1/2)
E
SECTION
(Page 24)
MAIN (2/2)
T E
L 1 3 9 4 2 2 9 6 5 1 3 L
SECTION
(Page 26)
MAIN (2/2)
I
SECTION
(Page 25)
• R CH : Same as L ch
• SIGNAL PATH
: FM
w w w 09
.
MIC AMP MIC VOLUME
IC850 (1/2) RV850
J801
F-RELAY
POWER AMP & VOLUME CONTROL
IC801
22 15
L-CH IN
THERMAL VOLUME
SENSOR CONTROL
8 5 6
13 12
VOLUME
CONTROL
D802, 852
THERMAL
SENSOR
D804
Q831-832
EVER +5V
MUTE
CONTROL
Q834
HEAD PHONE
MUTE
HP-MUTE
Q833
MUTE
MUTE
STK-MUTE
DRIVE SWITCH
Q804 Q803
PROTECT
VF (–35V)
x a o
y
i
– 29 –
http://www.xiaoyu163.com
8
ECHO CONTROL MIC LEVEL MIC AMP
IC851 RV851 IC850 (2/2)
9 LPF 2 IN LPF 1 OUT 2
11 OP 2 IN LPF 2 OUT 8
1 LPF 1 IN OP 2 OUT 10
RELAY
DRIVER
Q401, 402
PROTECT LATCH
DC AMP DRIVER
Q433-434 Q432
L-CH THERMAL
PROTECT SWITCH
Q Q
Q801 3 7 6 3
LATCH
DRIVER
Q437
PROTECT
SWITCH
Q439
+VH
RECT
SWITCH –35V REG
D831
Q904 Q903
-VH
u 1 6 3
.
http://www.xiaoyu163.com
2 4
9 9 8
MIC-SIG
MIC-SIG
J803
PHONES
HP.SW
TM401
RY401
L
FRONT
SPEAKER
R-CH
R
1 5 1 5 0 8 9 2 4
PROTECT
SWITCH
Q431
POWER
TRANSFORMER
T951
VF
VF
RECT
+UNREG. 12V
D833-836
UN +10V
RECT
D841-844
UN –10V
AC-H
+VL
RECT
D832
-VL
m
c o
– 30 –
HCD-VR50/VR70
2
9 9
DISPLAY
K
SECTION
(Page 31)
MAIN (1/2)
C
SECTION
(Page 23)
MAIN (2/2)
H
SECTION
(Page 25)
9 8 2 9 9
VOLTAGE
SELECTOR
VS901
AC
IN