Read Panasonic WJ-SX550 Service Manual Supplement online
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7.2. Flow Chart for the CPU Board
7.2.1. Flow Chart for CPU Board alone Check
Start
Turn on the Power Switch
Set ”80(H)” by SW2
Press CPU Reset Switch SW1
Enter Idle mode and D4 blinking
Set Test Mode No. by SW2
Press SW3 to start of Test
Press SW3 to enter Idle mode
SW2
MSB
LSB
ON
OFF
Test Result ?
MSB
LSB
NG
OK
Return to Idle?
Finish?
Turn off the Power Switch
End
Set ”0F(H)” by SW2
1
2
3
4
5
6
7
8
SW2
MSB
LSB
ON
OFF
All LEDs should be off.
D10 is ON.
YES
YES
NO
NO
D4 D5 D6 D7 D8 D9 D10 D11
D11 is ON.
MSB
LSB
D4 D5 D6 D7 D8 D9 D10 D11
MSB
LSB
D4 D5 D6 D7 D8 D9 D10 D11
1
2
3
4
5
6
7
8
SW2
MSB
LSB
ON
OFF
1
2
3
4
5
6
7
8
MSB
LSB
D4 D5 D6 D7 D8 D9 D10 D11
Note: It is possible to change from the Normal Operation Mode to the
Self Check mode or from the Self Check Mode to the Normal
Operation Mode when control is by the RS-485 line.
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