< 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
<ALL MODELS>
A16
Established
date
Revised
date
①
③
18 Pin (Power Board ↔ Main Board)
SMAW200-H18S5
1
Power on
2
DRV ON
3
3.5V
4
PDIM#1
5
3.5V
6
3.5V
7
GND
8
PDIM#2
9
24V
10
24V
11
GND
12
GND
13 12V 14
12V
15 12V 16
NC
17 GND 18
GND
②
Error symptom
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