November 16, 2006
6881094C31-E
5-18
Troubleshooting Charts:
Display Failure (NTN9564)
Display Failure (NTN9564)—Page 3
MAEPF-27406-O
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 (1.85V) occurrence during
power-on initialization period.
No
Yes
No
Yes
3
Signal
present
at appropriate
level?
Replace
Display
Check D0-D7
for appropriate
voltage levels
Return radio to
service depot for
further analysis
Summary of Contents for ASTRO XTS-5000
Page 7: ...vi Table of Contents November 16 2006 6881094C31 E Notes ...
Page 11: ...x List of Figures November 16 2006 6881094C31 E Notes ...
Page 17: ...November 16 2006 6881094C31 E xvi CommercialWarranty Notes ...
Page 31: ...November 16 2006 6881094C31 E xxx Portable Radio Model Numbering System Notes ...
Page 83: ...November 16 2006 6881094C31 E 3 44 Theory of Operation Encryption Module ...
Page 135: ...November 16 2006 6881094C31 E 5 44 Troubleshooting Charts Secure Hardware Failure Notes ...
Page 175: ...November 16 2006 6881094C31 E 7 32 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 367: ...November 16 2006 6881094C31 E Glossary 10 Notes ...
Page 373: ...Index 6 November 16 2006 6881094C31 E Notes ...