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Only for training and service purposes
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Standard Repair Process Detail Technical Manual
Check power input voltage and ST-BY 5V
B. Power error _No power
A18
Established
date
Revised
date
Error
symptom
Content
LCD TV
A18
For ’10 models, there is no voltage out for st-by purpose.
When st-by, only 3.5V is normally on.
Check the DC 20V/24V, 12V, 3.5V.
24 Pin (Power Board ↔ Main Board) - 공통
SMAW200-H24S (YEONHO)
1 Power on 2 20V (24V)
3 20V (24V) 4 20V (24V)
5 GND 6 GND
7 GND 8 GND
9 3.5V 10 3.5V
11 3.5V 12 3.5V
13 GND 14 GND
15 GND 16 GND
17 12V 18 Inverter On/off
19 12V 20 Lamp : A-Dim
LED : N.C
21 12V 22 PWM Dim #1
23 N.C
• Lamp SCANNING Model
: PWM Dim #2
24 Error-out
ALEF LED
Edge LED
2010. 12 .14
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