4. Troubleshooting
Backlight Test (CNM803 Removed)
1. Activate Backlight. (Remove CNM803 )
2. Check 192Vdc Supply Voltage at (pins 3 ) and at CH1 on SMPS.
3. If Missing remove CNL802 and test CH1 again.
→
If still missing replace SMPS, If OK (high approx 280Vdc) replace Panel.
4. Check pin map voltages. If 192Vdc is OK but other voltage(s) missing,
→
Replace Panel.
4-18
Pin
Item
11
9
7
5
3
(12Pin)
1
CNL802
Volts
1F2
NC
1-
NC
1-
96Vdc
NC
NC
1+
192Vdc
1+
NC
[55" Panel Pin Map]
Pin
Item
12
1F1
10
2-
8
2-
6
NC
4
2+
190Vdc
2
2+
Volts
NC
NC
1Vdc
NC
NC