Specifications

Troubleshooting Diagnosing A Suspected Hardware Problem - 22
DSU
able to
communicate
with display (Create File
process
successful)
?
Click Adjust
Geometry.
(DSU verifies
high voltage.)
High
voltage
OK
?
Open DSU
and click Create File.
Replace
CRT/video
board.
Measure voltage between
chassis ground and end
of RP128 (end closest
to IP6 on main deflection
board [MDB]).
Voltage
measures less than
11.5 or greater than
15 V
?
Voltage
measures
11.5 to 15 V
?
No
Yes
Yes
No
Problem
gone?
Yes
Return display for
whole unit or head unit
replacement.
(Follow service strategy
in your region.)
Replace MDB;
then open DSU
and click
Create File.
Create
File process
successful and
problem gone
?
Adjust display.*
Yes
No
Yes
Yes
Start
End
No
No
Flowchart: Diagnosing a Suspected
Hardware Problem
Replace
MDB
*Refer to
"Adjusting the Display
after Replacing the
Main Deflection Board"
or "Adjusting the Display
after Replacing the
CRT/Video Board" in this
chapter.