< Main Ass’y>
Checking order
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
<ALL MODELS>
A16
Established
date
Revised
date
Error
symptom
Content
①
③
12 Pin (Power Board ↔ Main Board)
SMAW200-H12S5K
1
PWR_ON
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
12
PDIM#1
②
18 Pin (Power Board ↔ Main Board)
SMAW200-H18S5K
1
GND
2
GND
3
PWR_ON
4
PDIM#2
5
GND
6
D13.2V
7
D13.2V
8
D13.2V
9
A13.2V
10
A13.2V
11
GND
12
GND
13
DRV_ON
14
PDIM#1
15
GND
16
SCLK
17
V-SYNC
18
SIN
55”
43”/49”
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Only for training and service purposes.
Summary of Contents for 43UV770M
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