LG Multi V Manual page 96

Troubleshooting Guide
Error
Error Type
No.
65 Heatsink High error
I Error Diagnosis and Countermeasure Flow Chart
Is assemble condition
of INV PCB heatsink normal ?
Yes
Is PCB temperature
sensing part normal ?
❈ PFCM Module checking method
Set the multi tester to diode mode.
Check resistance between No.19 pin and No.20 pin
of PCB PFC module
Resistance value should be in 7kΩ ±10%.
(at 25°C(77°F)).
Check PFC Module No.19,20 and IPM Module Pin
soldering condition
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Error Point
Inverter PCB heatsink sen-
sor is open or short
Check assemble condition between INV PCB heatsink and
No
PFC module
¡ Reassemble if abnormality found
Check resistance between No.19 pin and No.20 pin of PCB
PFC module
No
¡ 7kΩ ±10% (at 25°C(77°F))
¡ Replace PCB if abnormality found
PFCM :
Measuring resistance
between No.19,20 pin
- 96 -
Main Reasons
1. Heatsink assembly of INV PCB assemble
condition abnormal
2. Defect of temperature sensing circuit part
defect of INV PCB
IPM :
Measuring resistance
between No.19,20 pin
LGE Internal Use Only