Hitachi 42PMA400E, Руководство по обслуживанию

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Yes
No
Are Voltages
of the pin
①､⑩
(CN64)
on the AC/DC Power
unit collect ?
① +50 ～ 70V
⑩ +75 ～ 90V
⑥ GND
Is Voltage
of the pin
①
(CN68)
on the AC/DC Power
unit collect ?
No
①
+3V
③
GND
Yes
Panel
Module
Panel Module
AC/DC
Power unit
No
No
Is the LED red or
green/orange
Picture is not displayed (LED is lighting)
Do the Fans
rotate?
red
green/orange
Are
Voltage
applied to pins
⑦
(PW01)
of the Signal PWB
No
AC/DC
Power unit
Yes
Is pin
①
of
CN304 and PFAN1
7V more?
No
DC Fan
Yes
AC/DC Power
unit or Signal
PWB
Is Voltage
of the pin
⑥
(CN68)
on the AC/DC Power
unit 5V
Yes
AC/DC
Power unit
⑦
+6V
⑨
GND
Yes
Is it the power
saving mode?
Signal PWB
No
Yes
Input signal Cable
or Signal PWB