LG LRG4111ST Service Manual page 55

3
Range Of the resistance
igniter
Norton Igniter
SIC Igniter
Plug in the unit
4
Is the value of thermistor
normal? (Refer below)
Check with the test mode
To enter the test mode,
follow these steps:
(1) press the CLEAR button
(2) press the BAKE and BROIL buttons
at the same time.
(3) press the BAKE and
BROIL buttons at the same time again.
(4) press the NUM 3 button
Normal : Themistor value at room temp is from
70˚F to 90 F
˚
TROUBLESHOOTING
Resistance[ ]
Ω
Approximately
45~400
50~500
Yes
Yes
Go to No 6
Current Oven Temp
No
Unplug the unit
5
Is the resistance of
thermistor normal?
Check:
Pins 4 and 5 of CN60 in main PCB
Normal- approximately 1.09kΩ at 25˚C
6
Replace the Main PCB
8-8
Replace the
No
defected
Themistor
CN60
Yes