Service manual
ALX 720
Release 11/2003
Page 31
7 Dispenser CPU Board (Electronics Generation II)
Troubleshooting CPU Board
Step What is wrong
What could be the
reason
How to check it
Action to solve
problem
1a
LED D3 and D4 not
lightning
No supply voltage
Measure
supply
voltage
See trouble shooting
main supply
1b
Defective
or
disconnected cable
Check cable
connection from
transformer to CPU
board
Connect cable
1c Only one LED
lightning
Defective voltage
regulator
Replace CPU board
1d
Nothing found
Replace CPU board
Summary of Contents for ALX 720
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Page 20: ...Service manual ALX 720 Release 11 2003 Page 20 5 Display Adapter...
Page 21: ...Service manual ALX 720 Release 11 2003 Page 21 6 Dispenser Main Board Generation I...
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Page 34: ...Service manual ALX 720 Release 11 2003 Page 34 Figure 1 Layout CPU board...
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Page 45: ...Service manual ALX 720 Release 11 2003 Page 45 Figure 1 Sensor Print head position...
Page 46: ...Service manual ALX 720 Release 11 2003 Page 46 Figure 2 Centronics cable optional...
Page 47: ...Service manual ALX 720 Release 11 2003 Page 47 Figure 3 RS232 cable...
Page 48: ...Service manual ALX 720 Release 11 2003 Page 48 Figure 4 Sensor Material end...
Page 49: ...Service manual ALX 720 Release 11 2003 Page 49 Figure 5 Cable print head...
Page 50: ...Service manual ALX 720 Release 11 2003 Page 50 Figure 6 Fullsize sensor...
Page 51: ...Service manual ALX 720 Release 11 2003 Page 51 Figure 7 Micro switch...