LG ARUN Series Service Manual page 133

Error No.
193*
Fan PCB heatsink
Master 11 ¡ 931
temperature high
Slave 12 ¡ 932
194*
Fan PCB heatsink
Master 11 ¡ 941
temperature sensor
Slave 12 ¡ 942
I Error diagnosis and countermeasure flow chart
Is temperature sensor
'
inserted to fan PCB?
Yes
Is temperature sensor
'
attached to heat sink?
Yes
Is termperature '
sensor normal?
Yes
'
Is fan PCB assembly normal?
Yes
Recheck power and installation
condition
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Error Type
Heat sink temperature is over
95°C
Heatsink temperature sensor
abnormal
error
No
Check connection of heat sink
temperature connector
No
Check connection condition of
heat sink and temperature sensor
Check heat sink temperature
sensor wire disconnection
No
➔ Measure temperature sensor
resistance(10kΩ ±5% at 77°F)
➔ Replace the sensor if
abnormality found
No
Replace fan PCB assembly
Error Point
1. Heatsink temperature sensor defect
2. Fan PCB assembly defect
1. Heatsink temperature sensor
defect(Open/Short)
2. Wrong connection of temperature sen-
sor connector
3. Fan PCB assembly defect
Fan heat sink connection
Check connection condition
Checking temperature sensor disconnection
- 133 -
Troubleshooting Guide
Main Reasons
LGE Internal Use Only