Dixie Narco DNCB 501E - Select Panel Troubleshooting Chart (Switch Functionality)

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SELECT PANEL PROBLEMS
Problem: 1 or more switches not functional.
Enter diagnostic
menu.
Repair obstruction
and retest.
Press each select
button until you find
the problem.
Is problem switch
stuck?
Repair wiring and
retest.
Repair bent pin and
retest.
Replace switch and
retest.
Check continuity of
switch. O.K.?
Check continuity of
wiring back to SIID
board. O.K.?
Check for bent pin in
P4 connector. O.K.?
Call Dixie-Narco
Factory Service.
No
No
No
No
Yes
Yes
Yes
Yes