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Power Board <-> Main Board
1
PWR_ON/OFF
2
PDIM#2
3
GND
4
D13.2V
5
D13.2V
6
D13.2V
7
A13.2V
8
A13.2V
9
GND
10
GND
11
DRV_ON/OFF
12
PDIM#1
Checking order when there is no audio
①
Check the contact condition of or 13.2V connector of Main Board
②
Measure the
13.2V
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
①
③
②
<
Low models
>
Error symptom
Content
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Summary of Contents for 43LF540 -DB Series
Page 36: ......
