Tv Backlight Quick Test - Samsung QN55Q75CNF Service Manual

4-6-3. TV BACKLIGHT QUICK TEST

CNM803
FAIL_
1 IR_SMPS 2
COUNT
POWER_
3 PS_ON 4
LOW
5 GND 6 GND
7 A13V 8 A13V
9 A13V 10 A13V
11 GND 12 GND
13 N.C 14
15 B350V 16 B350V
17 N.C 18
19 B_GND 20 B_GND
ONE CONNECT BOX:
1. Remove AC Power to the OCB & Remove Cover (follow Disassembly Procedure)
2. Connect Discharge Tool across leads of each large Capacitors to remove its charge.
3. Remove Connector CNM803
4. Connect Backlight Test Cable to Supply 350Vdc & 13Vdc directly to the TV Panel
A13V
N.C
N.C
B350V
Backlight
Test Cable
4. Troubleshooting
4-19