Hitachi CMP420V1 Service Manual page 35

CMP420V1/CMP420V2/42EDT41 (PW1A)
Picture is not displayed (LED is lighting)
Is the LED red or
green/orange?
green/orange
Is it the power
saving mode?
No
Is the voltage
of CN68 pin
on the Power supply unit
5V?
Yes
Are the voltages
of CN64 pin
on the Power supply unit
correct?
Yes
Panel Module
red
Yes
Input signal Cable
or Formatter PWB
No
Power supply unit
No
65V
185V
GND
on the Power supply unit
Power supply unit
35
Is Voltage
applied to CN63 pin
of the Power supply unit?
+5V
Yes
Formatter PWB
Is the voltage
No
of CN68 pin
correct ?
+3V
Yes
GND
Panel Module
No
Power supply
unit