Sanyo PLV-70 Service Manual page 43

Troubleshooting
Power supply drive and protection diagrams and locations
SW902
SW905
AC IN Interlock sw.
Thermal sw.
K66L,K66M
1 12VF1
2
IC6603
IC6606
K66J
K66K
1 12VF2
2
IC6602
IC6604
1
4
K66G
2
5
16V
SUB POWER BOARD
F601
SW902
IC1872
SW905
IC1871
POWER BOARD
F601
Fuse
TSW601
IC601
P.F.CONTROL
16V 16V
3
4
Power
6V 6V
9 Oscillator
11
Circuit
-5V -5V
2
CN66A CN6A
Q6603
16V
Q6604
Q6624
FAN_SW
Q6626
Q6623
P.FAIL
IC6607
15V
Q6613/Q6614
IC_RST
LAMP BALLAST UNIT
1 1
K7A
K6A
3 3
K7B
1 3
1 3
K8L
IC3381
15
9V
Q3571
8
9
LAMP_SW
LAMP_ERR
LAMP_DET.
Q4807
6
FAN_DRIVE FAN_SW
P.FAIL
5
IC_RESET
4
10 FAN_CS1
FAN_CS2
11
K66D K8D
MAIN BOARD
-43-
IC1691
LAMP Ass'y
IC1691
TEMP. SENS.
1
3
2
5
K48E
TEMP. SENSOR
BOARD
3 5
K8X
IC1871
5V
TEMP.SENSOR
1
2
IC1872
TEMP.SENSOR
SDA
1
SCL
2
52 51
On: High
138
Failure: High
123
On: High
137
IC801
Failure: Low
MAIN CPU
125
On: Low
2
110
111