Start
EndCheck battery Volt
UPS&EBM
Y
End
End
Replace UPS
Check battery wires and cables N No battery? EndN
Y
Replace BatteryN
Battery Fault?
N
Y
Battery Fault?
N
Connect them
Check CNTL? Replace CNTL PCBAN
Replace PSDR PCBA Battery Fault? EndN
Y
CNTL
PSDR
Y
Y
DC fuse is OK? N Battery Fault? EndN
Y
Replae fuse
Y
PSDR
Battery detection circuit?
Change damaged
components
Battery Fault? EndNN
Charger output Volt? Change charger module Battery Fault?
Y
N EndN
Y
Y
Y
Y