Checking order when there is no audio
1.Check the contact condition of or 13V connector of Main Board
2. Measure the 13V 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
A21
Established
date
Revised
date
Error
symptom
Content
A21
①
②
③
1
DRV_ON
2
PDIM1
3
GND
4
GND
5
A13
6
A13
7
D13
8
D13
9
GND
10
D13
11
PWR_ON
12
PDIM2
1
SPK_R-
2
SPK_R+
3
SPK_L-
4
SPK_L+
<ALL MODELS>
1
VSYNC
2
SIN
3
GND
4
SCLK
5
DRV_ON
6
PDIM1
7
GND
8
GND
9
A13
10
A13
11
D13
12
D13
13
GND
14
D13
15
PWR_ON
16
PDIM2
17
GND
18
GND
UJ6*
UJ7*