Pioneer SC-LX85 Service Manual page 55

1
Amplifier Power Supply Failure Detection
A
R
IR POWER AMP ASSY
OVP&UVP
DETECT CIRCUIT
B
V+64V
330p/50
CH C4044
D4013
R5012
2125
10k
RKZ24KG(B2)
D4017
R5014
2125
22k
RKZ18KG(B2)
330p/50
C4047
330p/50
CH C4048
D4018
R5020
2125
10k
RKZ24KG(B2)
GND
D4021
R5022
2125
C
22k
RKZ18KG(B2)
C4051 330p/50
V-64V
DISPLAY
K
ASSY
CN3001
-13
D
84
UCOM
IC3001
E
F
46
1
2
GNDCH_2
V+5V
XBERR
Q4017
LTC124EUB
Q4030
LTC124EUB
V+5V
GND
330p/50 330p/50
CH C4045 CH C4046
D4014 D4015
Q4022
LSC4081UB(QRS)
RKZ24KG(B2) RKZ27KG(B)
R5013
2125
10k
V+5V
R5015
OE
2125
22k
CH Q4023
LSC4081UB(QRS)
V+5V
R5054
330p/50
330p/50
100k
CH C4049 CH C4050
R5019
2125
100k
D4019 D4020
Q4024
2SC3906K(RS)
RKZ24KG(B2) RKZ27KG(B)
Vceo120V
R5021
2125
GND
10k
R5023
2125
22k
Q4025
CH
LSC4081UB(QRS)
F
CN7652 CN7651
-27 -13
DISPLAY BRIDGE
AE
ASSY
2
3
R4093 100
DIGITAL MAIN
ASSY
CN601 CN602 CN7802
-27 -17 -17
CONNECT
X
ASSY
SC-57
3
4
CN4000
-6
XBERR
R4092
100
GND
INTERFACE
G
ASSY
CN7804 CN7004 CN7006
-5 -5 -14
XBERR
4