Anti-Two Block
© PAT
Rev. - 12/18/00 // CSH.
190118_-.DOC
11
7 NO
DISPLAY
PROBLEM: Blank console display with no warning light shown. All crane moments have
been stopped.
Measure voltage on the main board terminal strip between X1:1 (+12/24V) and X1:2
(ground). This is an input voltage from the crane.
Refer to Drawing 1.
Check fuses in central unit.
Replace fuses.
Measure voltage on the main board between X1:3 (+12/24V) and X1:4 (ground).
This is an output voltage to the console.
Refer to Drawing 1.
NEXT PAGE
START
NO
Check crane power supply for faulty
wiring in crane electric.
NO
YES
YES
NO
Replace the main board in central unit.
Refer to Drawing 2 and Replacement
Procedure 2.
YES
Corrected
Corrected
Corrected