Samsung UN KS8500F Series, Руководство по обслуживанию

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SMPS POWER
„
Power TV On. 1.
PS_ON √ . 2Vdc (when off) changes to 3.3Vdc (on)
May already be On if IoT USB is loaded or TV Smart Things Hub mode is active.
-
if voltage error or no change.
2.
Jog Function Control Test. √
If OK replace Main Board.
3.
All √
A13V supplies to
full voltage level
12.7VDC
.
If any wrong voltage, remove the SMPS connector to Main Board.
4.
A13V again for 12.7VDC. √
If OK replace Main Board.
5.
If still wrong voltage replace SMPS.
6.
OD
√ (Over Voltage Detect) : 3.3Vdc (Operating Normal)
If 0V or changing, an SMPS or Panel error exists.
7.
Perform Backlight Test.
8.
Backlight On/Off
√ 0V Off to 5Vdc ON.
If missing/error replace √
Main Board
.
49" / 55" SMPS Front
Fuse
CNM803
CNL801
CNM803
1 GND 2 GND 3 GND
4 GND 5 Vamp 6 GND
7 Vamp 8 OD_Level 9 Vamp
10 Fail Count 11 A13V 12 OD_ON/OFF
13 A13V 14 BLUEON/OFF 15 A13V
16 PS_ON/OFF 17 A13V 18 GND
19 GND 20 GND 21 PWM8
22 PWM7 23 PWM6 24 PWM5
25 PWM4 26 PWM3 27 GND
28 PWM2 29 PWM1 30 ANA_DIM
CNL801
1 IF2 2 IF1 3 1+ 4 5+
5 1- 6 5- 7 2+ 8 6+
9 2- 10 6- 11 3+ 12 7+
13 3- 14 7- 15 4+ 16 8+
17 4- 18 8-
4-4
4. Troubleshooting