28 Pin (Power Board ↔ Main Board)
SMAW200-H28S5K
1
PWR_ON
2
DRV ON
3
P-DIM
4
P-DIM2
5
3.5V
6
GND
7
3.5V
8
3.5V
9
GND
10
GND
11
12V
12
12V
13
12V
14
12V
15
12V
16
GND
17
GND
18
24V
19
24V
20
24V
21
24V
22
GND
23
GND
24
N.C
25
SCLK
26
GND
27
SIN
28
VSYNC
< Main Ass’y>
Checking order
1. Check the contact condition of 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.
Standard Repair Process Detail Technical Manual
Voltage and speaker checking method
when there is no audio
C. Audio error_No audio/Normal video
A16
Established
date
Revised
date
Error
symptom
Content
①
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Copyright © 2015 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
Содержание 43UF67 Series
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