Pioneer SC-27 Service Manual page 52

1
B REG Power Supply Overheat Detection
B REG Power Supply Failure Detection
A
X
B REG ASSY
+B
(+64V)
B
(-64V)
GND
-B
C
Abnormal Voltage Drop Detection Circuit
D
E
F
52
1
2
R7394
0
D7352
R7390
2SA1602A(EF)
Q7310
100
1SS352
Q7309
2SC4154(EFG)
D7355 R7391
1SS352 4.7k
!
2
3
R7398
D7350
Q7306
RT1P241M
1SS352
Q7304
R7353
0
RT1N241M
Temperature Detection Circuit
DISPLAY
K
ASSY
UCOM
IC8001
SC-27
3
4
V+5.6U
CN7306
220
-1
XBERR
BTEMP
-2
GNDU
JH7300
VEF1040-A
JP8005
-2
BTEMP
85
XBERR
84
-1
4