LG 84LM9600 (CHASSIS:LC23J) Service Manual ▷ View online
Standard Repair Process Detail Technical Manual
Check front display LED
B. Power error _No power
A17-2
Established
date
Revised
date
Error
symptom
Content
LCD TV
A17
- Logo Light -
ST-BY condition: Logo Light ON
Power ON condition
: Logo Light Turn Off (after 10 minutes)
Power ON condition
: Logo Light Turn Off (after 10 minutes)
Logo Light control :
Menu Æ Option Æ
Menu Æ Option Æ
LG Logo Light
Æ
ON/ Off
2012. 08 .30
<84LM96 LM86> Logo Light
Standard Repair Process Detail Technical Manual
Check power input voltage and ST-BY 3.5V
B. Power error _No power
A18-1
Established
date
Revised
date
Error
symptom
Content
LCD TV
A18
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
Standard Repair Process Detail Technical Manual
Check power input voltage and ST-BY 3.5V
B. Power error _No power
A18-3
Established
date
Revised
date
Error
symptom
Content
LCD TV
A4
2012. 08 .30
Check the DC 24V, 12V, 3.5V.
SLAVE PSU
24 Pin
(Power Board ↔ Main Board) -
Common
SMH200-H24S
1
Power on
2
24V
3
24V
4
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
17
12V
18
DRV ON
19
12V
20
N.C
21
12V
22
P-DIM
23
N.C
24
ERROR
<84LM96>
LGE Internal Use Only
Copyright © 2012 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Only for training and service purposes
Standard Repair Process Detail Technical Manual
Checking method when power is ON
B. Power error _No power
A19-1
Established
date
Revised
date
Error
symptom
Content
LCD TV
A19
Check “power on” pin is high
2011. 12 .14
ALEF LED
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
LGE Internal Use Only
Copyright © 2012 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Only for training and service purposes