Motorola SSETM 5000 - Manual (Page 114)

November 11, 2004 6881094C12-A
9-10 Troubleshooting Charts: Display Failure
Display Failure—Page 3
MAEPF-27507-B
Low-
Level Pulses
Present?
Check Active
Low Status on
both RESET
and CS
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 (0-V2) occurrence during
power-on initialization period.
No
Yes
No
Yes
3
Signal
present
at appropriate
level?
Replace
Display
Check J301, pins
7 and 10 for
appropriate voltage
levels (0-V2)
Return radio to
service depot for
further analysis