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Service manual
ALX 720
7 Dispenser CPU Board (Electronics Generation II)
Troubleshooting CPU Board
Step
What is wrong
1a
LED D3 and D4 not
lightning
1b
1c
Only
one
lightning
1d
Release 11/2003
What could be the
reason
No supply voltage
Defective
disconnected cable
LED
Defective
voltage
regulator
Nothing found
Page 31
How to check it
Measure
supply
voltage
or
Check
cable
connection
from
transformer to CPU
board
Action
to
solve
problem
See trouble shooting
main supply
Connect cable
Replace CPU board
Replace CPU board
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