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Troubleshooting
312066Z 19
Display does not respond properly to
button pushes.
Poor display connection. Check cable connections, page 46.
Replace damaged cable.
Display cable damaged or corroded. Clean connections; replace cable if is
damaged.
Ribbon cable on display circuit board
disconnected or broken.
Connect cable (page 46) or replace.
Broken display button. Replace, page 46.
Red stop button does not work. Broken button (fused contact). Replace, page 46.
Loose wire. Check connections, page 46.
Fan not working.
Blown fuse. Verify with ohmmeter; replace if nec-
essary (page 46).
Loose wire. Check fan wire.
Defective fan. Replace, page 46.
PROBLEM CAUSE SOLUTION