WJ-SX550 - Panasonic Video Monitoring Service Manual Supplement (repair manual). Page 35

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7.5. Flow Chart for the Control Board
7.5.1. Flow Chart for Control Board alone Check
Start
Turn on the Power Switch
Set ”8(H)” by SW2 
Press CPU Reset Switch SW1 
Enter Idle mode, D17 and D18 blinking 
Set Check No. xx by SW2 
(Hexadecimal Number System)
Press SW3 to start of Test
Press SW3 to enter Idle mode
Test Result ?
NG
OK
Return to Idle?
Finish?
Turn off the Power Switch
End
Set ”F(H)” by SW2 
All LEDs should be off. 
D17  is  ON. 
YES
YES
NO
NO
D18  is  ON. 
D1 D2
D15 D16
D17 D18
SW2
ON
OFF
1  
 
2  
 
3  
 
4
SW2
ON
OFF
1  
 
2  
 
3  
 
4
SW2
ON
OFF
1  
 
2  
 
3  
 
4
D1 D2
D15 D16
D17 D18
D1 D2
D15 D16
D17 D18
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