LG 84LM9600 (CHASSIS:LC23J) Service Manual ▷ View online
Standard Repair Process Detail Technical Manual
LED driver B+ 24V measuring method
A. Video error_No video/Normal audio
A2-1
Established
date
Revised
date
Error
symptom
Content
LCD TV
A2
Check the DC 24V, 12V, 3.5V and Inverter on
ALEF LED
2011. 12 .14
14 Pin
(Power Board ↔ Driver)
PSU
1 ~ 5
24V
6 ~ 10
GND
11
Detect
12
Inverter On/Off
13
Int. PWM
14
Ext. PWM (PDIM)
Standard Repair Process Detail Technical Manual
LED driver B+ 24V measuring method
A. Video error_No video/Normal audio
A2-4
Established
date
Revised
date
Error
symptom
Content
LCD TV
A2
2012. 08.30
< 84LM96 >
Check the DC 24V, 12V, 3.5V and Inverter on
Main PSU
12 Pin (P202)
(Power Board ↔ Driver)
PSU
1 ~ 5
24V
6 ~ 10
GND
11
ERROR
12
DRV ON
P206
P207
14 Pin (P203)
(Power Board ↔ Driver)
PSU
1 ~ 5
24V
6 ~ 10
GND
11
ERROR
12
DRV ON
13
N.C
14
P-DIM
Check the DC 24V, 12V, 3.5V and Inverter on
12 Pin (P204)
(Power Board ↔ Driver)
PSU
1 ~ 5
24V
6 ~ 10
GND
11
ERROR
12
DRV ON
SLAVE PSU
P204
P205
14 Pin (P205)
(Power Board ↔ Driver)
PSU
1 ~ 5
24V
6 ~ 10
GND
11
ERROR
12
DRV ON
13
N.C
14
P-DIM
Entry method
1. Press the ADJ button on the remote controller for adjustment.
2. Enter into White Balance of item 6.
3. After recording the R, G, B (GAIN, Cut) value of Color Temp
(Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD.
Standard Repair Process Detail Technical Manual
Check White Balance value
A. Video error_No video/Normal audio
<ALL MODELS>
A4
Established
date
Revised
date
Error
symptom
Content
LCD TV
A3
Entry method
1. Press the ADJ button on the remote controller for adjustment.
2. Enter into White Balance of item 10.
3. After recording the R, G, B (GAIN, Cut) value of Color Temp
(Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD.
2011. 12 .14
Standard Repair Process Detail Technical Manual
Power Board voltage measuring method
A. Video error_No video/ Audio
A5
Established
date
Revised
date
Error
symptom
Content
LCD TV
A4
Check the DC 24V, 12V, 3.5V.
ALEF LED
2011. 12 .14
24 Pin
(Power Board ↔ Main Board) -
common
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
N.C
(Only LPB : V-sync)
17
12V
18
Inverter On/off
19
12V
20
N.C
(LPB, Lamp : A-dim)
21
12V
22
PWM Dim #1
23
N.C
(only Lamp SCANNING Model
: PWM Dim #2)
24
Error-out
Edge LED
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