317
SECTION 34 - DIAGNOSTICS AND TROUBLESHOOTING
FORM 160.54-M1
ISSUE DATE: 10/25/2019
JOHNSON CONTROLS JCI COMPANY CONFIDENTIAL
34
d. With the “All White” test selected, the volt-
age at Microboard J5-6 through J5-11, J5-13
through J5-18 and J5-20 through J5-25
should be greater than 3.0 VDC. If not, the
microboard is defective.
e. With the “All Black” test selected, the volt-
age at Microboard J5-6 through J5-11, J5-13
through J5-18 and J5-20 through J5-25
should be greater than 1.0 VDC. If not, the
microboard is defective.
4. Display
If the Display Ribbon Cable, Display Interface
Board and Microboard check OK per the above
procedures, the Display is most likely the cause
of the problem.
To Next Page
Loading...
