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5
Verify Backlight Turns On
If No Backlight ?
9
Check
BLU_PWN
(PIN
6
)
Backlight On/Off
&
Dim Controls
– For approx. 1Vdc – 2.5Vdc depending on backlight dimming
level.
CNM801
A13V
A13V
GND
GND
A13V
A13V
1
3
5
7
9
11
2
4
6
10
12
GND
Power_On/Off
OD ON/OFF
BLU_PWM
GND
ANA-DIM
8
If missing/Error ?
If OK ?
9
Replace the Main Board
9
Perform backlight test
4-9
4. Troubleshooting