Standard Repair Process Detail Technical Manual
Voltage and speaker checking method
when there is no audio
C. Audio error_No audio/Normal video
A12
Established
date
Revised
date
Error
symptom
Content
A12
Checking order when there is no audio
①
Check the contact condition of or 20V connector of Main Board
②
Measure the 20V 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.
1
SPK_R-
2
SPK_R+_
3
SPK_L-
4
SPK_L+
5
SPK_R-WF
6
SPK_R+_WF
7
SPK_L-_WF
8
SPK_L+_WF
OLED TV
24Pin(Power Board ↔ Main Board)
1
DRV ON
2
DPC_CTL
3
GND
4
GND
5
20V
6
20V
7
12V
8
12V
9
GND
10
GND
11
PWR ON
12
AC_DET
13
GND
14
GND
15
GND
16
GND
17
12V
18
12V
19
GND
20
GND
21
20V
22
20V
23
20V
24
20V
①
②
③
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