DOWNLOAD LG 55LM660S / 55LM660T (CHASSIS:LD22E) Service Manual ↓ Size: 10.77 MB | Pages: 119 in PDF or view online for FREE

Model
55LM660S 55LM660T (CHASSIS:LD22E)
Pages
119
Size
10.77 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
55lm660s-55lm660t-chassis-ld22e.pdf
Date
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Standard Repair Process Detail Technical Manual
Check front display LED
B. Power error _No power
A17
Established 
date 
Revised 
date 
Error 
symptom
Content
LCD  TV
ST-BY condition: Red
Power ON condition: white
Front LED control :
Menu 
Æ Option Æ Power Indicator
Æ Standby light ON
2010. 12 .14
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
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.
Edge LED
2010. 12 .14
Edge LED
24 Pin
 
(Power Board ↔ Main Board)
SMAW200-H24S (YEONHO)
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
GND
17
12V
18
Inverter On/off
19
12V
20
Lamp : A-Dim
LED : N.C
21
12V
22
PWM Dim #1
23
GND/P_DIM2
•
Lamp SCANNING Model
: PWM Dim #2
24
Error-out
Standard Repair Process Detail Technical Manual
Checking method when power is ON
B. Power error _No power
A19
Established 
date 
Revised 
date 
Error 
symptom
Content
LCD  TV
Check “power on” pin is high
2010. 12 .14
24 Pin
 
(Power Board ↔ Main Board)
SMAW200-H24S (YEONHO)
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
GND
17
12V
18
Inverter On/off
19
12V
20
Lamp : A-Dim
LED : N.C
21
12V
22
PWM Dim #1
23
GND/P_DIM2
•
Lamp SCANNING Model
: PWM Dim #2
24
Error-out
Edge LED
Edge LED
Entry method
1. Press the IN-START button of the remote controller 
for adjustment
2. Check the entry into adjustment item 3
Standard Repair Process Detail Technical Manual
POWER OFF MODE checking method
B. Power error 
_Off when on, off whiling viewing
<ALL MODELS>
A22
Established 
date 
Revised 
date 
Error 
symptom
Content
LCD  TV
2010. 12 .14
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