LG LMC1575BD, Service Manual

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5-13
TROUBLE SHOOTING
CAUTIONS
1. Check grounding before checking for trouble.
2. Be careful of the high voltage circuit.
3. When checking the continuity of the switches, disconnect one lead wire from these parts and then check continuity with the AC plug removed.
To do otherwise may result in a false reading or damage to your meter.
4. Do not touch any part of the circuit on the PCB since static electric discharge may damage this control panel.
Always touch yourself to ground while working on this panel to discharge any static charge built up in your body. (Micom model only)
WHEN YOU GET A COMPLAINT FROM YOUR CUSTOMER, EVALUATE THE COMPLAINT CAREFULLY. IF THE FOLLOWING SYMPTOMS APPLY, PLEASE
INSTRUCT THE CUSTOMER IN THE PROPER USE OF THE MICROWAVE OVEN. THIS CAN ELIMINATE AN UNNECESSARY SERVICE CALL.
CONDITION
Microwave oven
does not work.
Inserting many plugs into one outlet
and using them at the same time
(blown fuse or breaker)
Microwave oven plug is not inserted
tightly.
Output power is too low. Low AC input voltage.
Food temperature is too low.
Using metallic ware and allowing it to
touch the oven wall.
Sparks occur.
Inconsistent intensity of microwave by
their characteristics.
1. Use plastic wrap or lid.
2. Stir once or twice while cooking
soup, cocoa or milk, etc.
Uneven cooking.
Ceramic ware trimmed in gold or silver
powder is used.
Avoid using other electrical appliances
when you use the microwave oven.
Insert microwave oven plug securely.
Use the microwave oven at adequate
line voltage.
This may not be a defect.
It is possible that the food should be
cooked for a longer time period.
Do not use metallic ware for cooking
except that noted in the cooking guide.
Do not use any type of cookware with
metallic trimming.
CAUSE REMEDY