LG 42LW6500-JA (CHASSIS:LE13E) Service Manual ▷ View online
Entry method
1. Press the IN-START button of the remote controller for adjustment
2. Check the entry into adjustment item 3
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
A22
2010. 2 .19
Checking method
1. Press the MENU button on the remote controller
2. Select the AUDIO function of the Menu
3. Select TV Speaker from Off to On
Standard Repair Process Detail Technical Manual
Checking method in menu when there is no audio
C. Audio error_No audio/Normal video
<ALL MODELS>
A24
Established
date
Revised
date
Error
symptom
Content
LCD TV
A24
Standard Repair Process Detail Technical Manual
Voltage and speaker checking method
when there is no audio
C. Audio error_No audio/Normal video
A25
Established
date
Revised
date
Error
symptom
Content
LCD TV
A25
2011. 01 .18
Checking order when there is no audio
①
Check the contact condition of
20V or 24V connector of Main Board
②
Measure the 24V input voltage
supplied from Power Board
(If there is no input voltage,
remove and check the connector)
③
Connect the tester RX1 to the speaker
terminal and if you hear the Chik Chik
sound when you touch the GND and output
terminal, the speaker is normal.
Edge LED 22/26
<Under 26”>
1
24V
2
24V
3
24V
4
24V
5
24V
6
GND
7
GND
8
GND
9
GND
10
GND
11
NC
12
INV_ON
13
PWM_DIM
14
ERROR_OUT
Pin layout (24P)
Error-out
24
NC
23
LE : PWM Dim #1
IOP : NC
IOP : NC
22
12V
21
LE : NC
IOP : PWM Dim #1
IOP : PWM Dim #1
20
12V
19
Inverter ON
18
12V
17
NC
16
GND
15
GND
14
GND
13
3.5V
12
3.5V
11
3.5V
10
3.5V
9
GND
8
GND
7
GND
6
GND
5
24V
4
24V
3
24V (IOP & Edge
55”)
20V (Edge 42/47)
2
Power
on
1
Pin layout (24P)
Checking order
1, 2. Check IR cable condition between IR & Main board.
3. Check the st-by 3.3V on the terminal 6.
4. When checking the Pre-Amp when the power is in ON condition, it is normal when
4. When checking the Pre-Amp when the power is in ON condition, it is normal when
the Analog Tester needle moves slowly, and defective when it does not move at all.
Standard Repair Process Detail Technical Manual
Remote controller operation checking method
D. Function error_ No response in remote controller,
key error
<ALL MODELS>
A27
Established
date
Revised
date
Error
symptom
Content
LCD TV
A27
1
2
S/T_SCL
14
S/T_SDA
15
LED_R
12
GND
13
Normal 3.3V
11
GND
10
IR
9
LED_B
8
GND
7
St 3.3V
6
KEY2
5
KEY1
4
GND
3
SDA
2
SCL
1
3
4
2010. 2 .19
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