No Power (Lamp Control) - Sanyo PLC-WM4500L Service Manual

Troubleshooting

No Power (Lamp control)

AC
Check that the LAMP_DC_ON
signal is correct.
Power: High
32
IC301
SYSTEM
154
PW_MASTER_SDI
CONTROL
&
251
PW_MASTER_SDO
SCAN
CONVERTER
41
PW_MASTER_SCK
<PW392>
SW902
THERMAL
PROTECTOR
K6B
K6AA
A902
POWER
LAMP_DC_ON
14
LAMP_SWIN
8
IC9885
7 15
SUB-MICON
CHO_TXD
<LC87F2G>
9
16
CHO_RXD
K6A CJ1
BALLAST
CJ2
K6R
1
1
K8R
POWER-ON:H
POWER-ON:H
IC1853
INVERTER
1 2
5 3
MAIN
-69-
A901
LAMP
5 1 4
COVER SW.
SW901
LAMP COVER-SW
5 1 4 3
K8K
Q1861
IC1854
1
PF_FAN
4
2
Check that the LAMP_SWIN
signal is correct.
Power-on: High
LAMP
LP900
1
K8B