LGE Internal Use Only
Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
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.
***
③
-0 : LX65 & 95,
③
-1 &
③
-2 : Only LX95
Standard Repair Process Detail Technical Manual
Voltage and speaker checking method
when there is no audio
C. Audio error_No audio/Normal video
<ALL MODELS>
A25
Established
date
Revised
date
Error
symptom
Content
LCD TV
A25
Edge LED 42/47”
Pin layout (24P)
1
Power
on
2
24V
(IOP & Edge 55”)
20V (
Edge 42/47
)
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
NC
17
12V
18
Inverter ON
19
12V
20
LE : NC
IOP : PWM Dim #1
21
12V
22
LE : PWM Dim #1
IOP : NC
23
NC
24
Error-out
①
②
③
③
-1
③
-2
Summary of Contents for 55LX9500
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