©2010 ACP, Inc. 16400007 Rev. 0 91. Check grounding before checking for trouble.2. Be careful of the high voltage circuit.3. Discharge the high voltage capacitor.4. When checking the continuity of the switches or of the high voltage transformer, disconnect one lead wirefrom these parts and then check continuity with the AC plug removed. To do otherwise may result in afalse reading or damage to your meter.5. Do not touch any part of the circuit on the PCB since static electric discharge may damage this controlpanel.Always touch yourself to ground while working on this panel to discharge any static charge built up in your body.Troubleshooting ProceduresCONDITIONMicrowave ovendoes not work. Inserting many plugs into oneoutlet and using them at thesame time(blown fuse or breaker)Microwave oven plug is notinserted tightly.Output power is too low. Low AC input voltage.Food temperature is too low.Using metallic ware andallowing it to touch the ovenwall.Sparks occur.Inconsistent intensity ofmicrowave by theircharacteristics.1. Use plastic wrap or lid.2. Stir once or twice whilecooking soup, cocoa ormilk, etc.Uneven cooking.Ceramic ware trimmed ingold or silver powder is used.Avoid using other electricalappliances when you use themicrowave oven.Insert microwave oven plugsecurely.Use the microwave oven atadequate line voltage.This may not be a defect.It is possible that the foodshould be cooked for alonger time period.Do not use metallic ware forcooking except that noted inthe cooking guide.Do not use any type ofcookware with metallictrimming.CAUSE REMEDYDisplay “CALL SERVICE” See Service Test Mode page 17to clear CALL SERVICE .WHEN YOU GET A COMPLAINT FROM YOUR CUSTOMER, EVALUATE THE COMPLAINTCAREFULLY. IF THE FOLLOWING SYMPTOMS APPLY, PLEASE INSTRUCT THE CUSTOMERIN THE PROPER USE OF THE MICROWAVE OVEN. THIS CAN ELIMINATE AN UNNECES-SARY SERVICE CALL.