Tv Power On Sequence - Samsung QN65Q9FNAF Service Manual

4. Troubleshooting

4-3-2. TV POWER ON SEQUENCE

• 65 / 75 inches : LD/SMPS A
Main Connector (POWER)
35Vdc LED Supply (ver. A)
18Vdc LED Supply (ver. B)
1 B-GND 2
7 N.C 8
13 VAMP 14
19 PS_ON 20 POWER_LOW
25 5.5V 26
Power On
• 65 / 75 inches : LD/SMPS B
1 GND 2
7 TEST_LD 8
13 GND 14
19 GND 20
4-6
FUSE
CNM803A
CNM803A (MAIN Connector)
B-GND 3
N.C 9 GND
B13V 15 VAMP
21
N.C
CN9003B (LD/SMPS A Connector)
CONTACT 3 SERIAL_DATA 4
VSYNC_IN 9 SDA_LED
SCL_LED 15 GND
GND
VAMP / B13V
N.C 4 N.C
10 GND
16 B13V
N.C 22 N.C
GND
10 GND
16 SEAMLESS
5 B350V
11 VAMP
17 A13V
23 GND
CN9003B
LD/SMPS A Connector
5 SERIAL_STT
11 BLU_ON/OFF
Backlight
6 B350V
12 B13V
18 GND
24 Fault
6 SERIAL_UHR
12 TEST_SD