Display Failure—Page 3 - Motorola ASTRO XTS 5000 Detailed Service Manual

6-10
6.11 Display Failure—Page 3
Use an oscilloscope to check for
a low-level (0V) pulse occurrence
during power-on initialization period.
Use an oscilloscope to check for
either a low-level (0V) pulse or
high-level (1.85V) occurrence during
power-on initialization period.
April 15, 2002
Troubleshooting Charts: Display Failure—Page 3
3
Check Active
Low Status on
both RESET
and CS
Low-
No
Level Pulses
service depot for
Present?
Yes
Check D0-D7
for appropriate
voltage levels
Signal
No
present
at appropriate
level?
Yes
Replace
Display
Return radio to
further analysis
MAEPF-27406-O
68P81094C31-O