Trouble Shooting Guide

16
EEPROM Clear Check
Denition of EEPROM Clear Mode:
- EEPROMinitialization.
- Allcourse/optionsettingsaretoberesettodefault
valuesafterEEPROMinitialization.
- WhenServicearisesanditneedsPCBreplacement,
EEPROMshouldbereset.
How to Enter:
Model : WF455AR*
- Plugintheunit.
- PressDelayStartKey,andPowerKeyatthesame
time.
Model : WF457AR*
- EnterServiceMode
- S/WVersionCheckMode
- Pressthe“Reset”keythreetimesrepeatedly.
TROUBLE DIAGNOSIS
- Asthemicomwashmachineisconguredofthecomplicatestructure,theremightbethe
servicecall.
Belowinformationispreparedforexacttroublediagnosisandsuitablerepairguide.
Caution for the Repair and Replacement
Pleasefollowbelowinstructionforthetroublediagnosisandpartsreplacement.
1) Assomeelectroniccomponentsaredamagedbythechargedstaticelectricityfromtheresin
partofmachineorthehumanbody,preparethehumanbodyearthorremovethepotential
dierenceofthehumanbodyandmachinebycontactingthepowersupplyplugwhenthe
workcontactingtoPCBisexecuted.
2) SinceAC120VisappliedtothetriacT1andT2onP.C.B,theelectricshockmayoccurbytouching
andbecarefulthatthestrongandweakelectricityaremixed.
3) AstheP.C.Bassemblyisdesignedfornotrouble,donotreplacetheP.C.Bassemblybythewrong
diagnosisandfollowtheprocedureofthetroublediagnosiswhenthemicomisnotoperated
normally.
TROUBLE SHOOTING
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
(Techsheet)WF457AR-03152A-02_EN.indd 16 2012-12-13 11:22:55