Daewoo KOR-868G Service Manual

Contents

Daewoo KOR-868G Service Manual Manual pdf 18 page image

17(TROUBLE 1) Oven does not operate at all ; any inputs can not be accepted.TROUBLESHOOTING GUIDEFollowing the procedure below to check if the oven is defective or not.1. Check grounding before trouble checking.2. Be careful of the high voltage circuit.3. Discharge the high voltage capacitor.4. When checking the continuity of the switches, fuse or high voltage transformer, disconnect one lead wire from these partsand check continuity with the AC plug removed. To do otherwise may result in a false reading or damage to your meter.NOTE : When electric parts are checked, be sure the power cord is not inserted the wall outlet.Check wire harness, wiring and connected of the terminals and power cord before check the parts listedbelow.CONDITION CHECKCheck continuity of interlockmonitor switch with door closedCheck continuity of of primaryinterlock switch contact with doorpartially open until interlock moni-tor switch contact closeMalfunction ofinterlock moni-tor switchShorted con-tacts of primaryinterlock switch.RESULTContinuityNo ContinuityNo ContinuityReplace fuseCAUSE REMEDYReplaceNOTE 1Fuse blows.ReplaceNOTE 1Defective lowvoltage trans-former0Ω or infiniteApprox.150~310(normal)ReplaceCheck continuity of primarywinding of low voltage trans-formerDefective highvoltage capacitorNormal ReplaceDisconnect one side of the leadwire connected form high volt-age transformer to the high volt-age capacitor and operate theunitContinuityDefective highvoltage trans-formerFuse againblowsReplace