2008T Troubleshooting Guide
P/N 490292 Rev. A
P- F-2.2 TWENTY-FOUR VOLTS-A MORE THAN 23.0 VOLTS DC
a) Figure below, at the UI-MICS board, TWO (2) checks:
CHECK #1: ENSURE the UI-MICS board’s J7 LCD cable is plugged in PROPERLY!
CHECK #2: ENSURE the J8 – INVRTR cable is plugged in PROPERLY!
b) Turn the machine on (fan runs) and allow fifty (50) seconds. If screen remains black continue to part c.
c) Turn the machine off and swap in the cable that runs BETWEEN the Functional and UI-MICS board* with
a known good i.e. P23 Functional board ↔ J6 UI-MICS board.
* To LOCATE this cable refer to the Figure at the bottom of page 649
d) Turn the machine on (fan runs) and allow fifty (50) seconds. If screen remains black continue to part e.
e) Turn the machine off. Per the Figure above, swap in a known good J8-INVRTR cable.
f) Turn the machine on (fan runs) and allow fifty (50) seconds. If the screen remains black, see part g.
g) Turn the machine off. Per the Figure above, swap in a known good J7- LCD cable. CAUTION! Be
VERY careful to not bend or break the UI-MICS board’s J7 connector’s micro-pins!
h) Turn the machine on (fan runs) and allow fifty (50) seconds. If the screen remains black, see part i.
i) Turn the machine off and swap in a known good Functional Board.
j) Turn the machine on and allow fifty (50) seconds. If a “Cond Offset Failure” banner appears the screen
is displaying normally but the machine needs to be calibrated. If the screen remains black continue to
part k.
k) Turn the machine off and swap a known good UI-MICS board.
l) Turn the machine on (fan runs) and allow fifty (50) seconds. If the screen remains black the screen may
be bad OR a cable is unplugged inside the screen assembly.
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