Read Panasonic WJ-SX550 Service Manual Supplement online
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7.8. Flow Chart for the Alarm Board
7.8.1. Flow Chart for Alarm Board alone Check
Start
Turn off the Power Switch
Turn on the Power Switch
Enter Idle mode, Dot LEDs on the
7Seg LED blinking alternately
Set Check No. xx by SW11
(Binary Coded Decimal System)
Press SW2 to start of Test
Press SW3 to enter Idle mode
Test Result ?
NG
OK
Return to Idle?
Finish?
Turn off the Power Switch
End
All LEDs should be off.
D2 is ON.
YES
YES
NO
NO
D3 is ON.
LSB
MSB
10s Digit
1s Digit
SW11
ON
OFF
OFF
1
2
3
4
5
6
7
8
Set Rotary Switch SW1 to 7
D2
D3
D2
D3
Press SW2 (TEST)
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