Samsung QA65Q90RAK Service Manual page 82

• 82 inches
LD/SMPS B
3
4
LD/SMPS B
LED Panel Connectors
3 2
4 5
LD/SMPS B
LED Panel Connectors
CN1102_SPI (DIMMING)
1 GND 2
3 PWM_DIMMING_OUT12_SDATA 4
5 PWM_DIMMING_OUT11_SSTT 6 PWM_DIMMING_OUT10_SCLK
7 N.C 8 PWM_DIMMING_OUT9_VSYNC
9 OVD_ONOFF_LD_SDA_I2C 10
11 B5V_PW 12
13 GND 14 OVD_LEVEL_LD_SCL_I2C
15 GND 16 PWM_DIMMING_OUT8_SEAMLESS
BL Control Path
BL Control Path
LD/SMPS A
2 1 5
5 1 2
LD/SMPS A
1
CNM803A
CN9003B
CN9003A
Dimming BL Control
GND
GND
GND
N.C
CN1102_SPI
Start
4
<Example with panel ribbons removed from>
3
CN9003A
CNM803B
CNM803A
CN201
Optical / PWR Connector
Start
BL Supply B350Vdc
A13V Supply
4. Troubleshooting
LED Panel Connectors
LD/SMPS A
1
LED Panel Connectors
CNM803A
1 B-GND 2 B-GND
3 N.C 4 N.C
5 B350V 6 B350V
7 N.C 8 N.C
9 GND 10 GND
11 VAMP 12 B13V
13 VAMP 14 B13V
15 VAMP 16 B13V
17 A13V 18 GND
19 PS_ON 20 POWER_LOW
21 N.C 22 N.C
23 GND 24 Fault
25 5.5V 26 N.C
CN200
ONE CONNECT
5 4
2 3
4-13