PAT DS 150, Service Manual

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Troubleshooting Flow Charts 25
PROBLEM: Blank console display with no warning light shown. All crane moments
have been stopped.
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No Display
No
Yes
Measure crane voltage on connection board between X1-2 (+12V) and X1-4 (ground).
Refer to system wiring diagram.
NOTE: If crane voltage is measured below 10V system will switch off.
Correct?
Check crane power supply for faulty
No
crane electric or if supply is too low.
Yes
Measure voltage on the connection board between X1:30 (+12/24V) and X1:33
(ground). This is an output voltage to the console.
Refer to system wiring diagram.
Correct?
Replace connection board and reset pressure
No channel. Refer to system wiring diagram and
main board replacement procedure.
Yes
Start
Check fuses on CPU box.
Correct? Replace fuses.