6-2
FAILURE MODE FLOW CHART
Yes
Power Off
Check the voltage of
Power PCB
Is the voltage as below?
PIN No. of CN10
Voltage
PIN2 ~ PIN3(GND)
approximately
approximately
PIN4 ~ PIN3(GND)
approximately
-24 ~ -35[V]
PIN5 ~ PIN6
approximately
AC 3.4~ 4.6 [V]
No
Replace the
Power PCB
4
PIN No. of CN9
Voltage
PIN4 ~ PIN5(GND)
approximately
-24 ~ -35[V]
PIN5 ~ PIN6
approximately
AC 3.4~ 4.6 [V]
Power Off
Is the voltage of Main PCB’s
Vcc 4.5V ~ 5.5V? Check the
voltage between pin2 and
pin3 of IC2
No
Replace the
Main PCB
5
IC02
3pin
2pin(GND)
Check the voltage of Main
PCB Is the voltage as below?
No
Replace the
harness
(CN9 to CN10)
Replace the Main PCB
6
CN9
1pin
Yes