Panasonic EB-X70 Service Manual

Also see for EBX70 - CELL PHONE: Operating instructions Operating instructions Technical information Service manual

FAULT FINDINGIssue 1 Section 8 PMCD030901C8Revision 0 – 48 – Service Manual8.2. BGA Fault IdentificationThe following process is recommended when attempting to identify a ‘no power-on’ fault or ‘intermittent power-off’ fault thatcould be attributed to a BGA device.Figure 8.5: BGA Fault IdentificationThe following signals or levels should be present on the CALYPSO+ or SYREN BGA device. If the signals are found not to bepresent, and the procedure in Figure 8.5: has been followed, then suspect the SYREN BGA device, Fault Code - Q orCALYPSO+ BGA device, Fault Code R, as detailed below:Error Code Fault Action Fault CodeSystem Error Software corruption. CUNDEFD HANDLR DSWI Attempt to download latest software. If EPRE_FETCH unsuccessful, suspect faulty CALYPSO+ FDATA_ABORT device GINTERUPT Error HRun WinModo in "GangWrite" mode.Suspect FLASH.Suspect CALYPSO+BGA device.Refer to Error DisplayCodes table (below).NOYESNOYESNOYESYESNONOYESFAULT CODE: BFAULT CODE: ARefer to BASIC TESTS table(below). Repair and re-calibratewhere necessary.Does thephone startsignalling?Was thesoftware downloadedsuccessfully?NODoes thephone work in-call?YESYESGood phone.Has thephone beencalibrated?NOYESNOSTARTDoes thephone power on ?Enable 'Set Error Display'and re-power phone inHandheld mode.Does thephone power onin Handheldmode?Does thephone power offintermittently?Is anerror messagedisplayed on thephone?Attempt to power on thephone from the ServiceChannel Box.Download latest softwareto phone.Perform Calibration procedures.YES10700-1