User Guide

No display
All wire harness
connections OK?
All fuses OK? F3 and F4 blown? Repair and retest
Check keyboard cable
for improper connection
Does the display
self-test?
Display voltages
OK?
Test power supply
unloaded
Hard re-initialize unit
as described in step 14g
Replace
keyboard/display
Power supply
voltages OK?
Does the sign-on
,essage appear?
Replace
power supply
All better now! Does the sign-on
message appear?
Replace
main board
Replace keyboard
Unplug keyboard cable
from main board and
see flowchart note
on page 6