Samsung Frame QN43LS03TAF Service Manual page 64

Chassis: qwd90
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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

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