EI65 TROUBLESHOOTING HANDBOOK
031-300-190-035 REVISION A 01/25/99
6
3.2 ANTI TWO BLOCK PROBLEM - continued
Continued from previous page.
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Correct?
Fault in cable assembly. Check cable assemblies
and replace defective cable.
Refer to Drawing 1, System Diagram, Section 5. Drawings.
With power off, measure the A2B signal in the console at the X1:9 and X1:10.
With the switch weight in position the ohm meter reads 4.7K ohms.
Refer to Drawing 4, Anti-Two Block Circuit, Section 5. Drawings.
End
No
Yes
With power on and the switch weight in position,
If the Anti-Two Block condition exists replace connection board.
A2B relay defective on connection board.
Refer to Drawing 1 & 2, Section 5. Drawings..
Yes
