6881094C31-E
November 16, 2006
Troubleshooting Charts:
Power-Up Failure
5-3
5.3
Power-Up Failure—Page 1
MAEPF-27389-C
Radio
Power-Up
Failure
Remove
R528 (VOCON)
Replace U301
(Flipper) and
place R528
back on board
Fixed?
Place R528
back on board
Probe
32.768 kHz
Clock at R316
Signal
Present?
Is
VOCON Board
NNTN4563, NNTN4819,
or NNTN4717
kit?
Signal may appear
for a very short period
of time (50 ms). Use
an oscilloscope with
trigger to capture signal.
Verify integrity
of C308 and
C309
Remove
Shield
SH101
Verify Standard
Bias in
Table 5-1
Standard
Bias OK?
Isolate and
Repair Problem
See DC Supply
Failure flowchart
No
No
No
No
Yes
Yes
Yes
Yes
1
2
Содержание ASTRO XTS-5000
Страница 7: ...vi Table of Contents November 16 2006 6881094C31 E Notes ...
Страница 11: ...x List of Figures November 16 2006 6881094C31 E Notes ...
Страница 17: ...November 16 2006 6881094C31 E xvi CommercialWarranty Notes ...
Страница 31: ...November 16 2006 6881094C31 E xxx Portable Radio Model Numbering System Notes ...
Страница 83: ...November 16 2006 6881094C31 E 3 44 Theory of Operation Encryption Module ...
Страница 135: ...November 16 2006 6881094C31 E 5 44 Troubleshooting Charts Secure Hardware Failure Notes ...
Страница 175: ...November 16 2006 6881094C31 E 7 32 Troubleshooting Tables List of Board and IC Signals Notes ...
Страница 355: ...8 180 Schematics Board Overlays and Parts Lists VOCON Boards November 16 2006 6881094C31 E Notes ...
Страница 367: ...November 16 2006 6881094C31 E Glossary 10 Notes ...
Страница 373: ...Index 6 November 16 2006 6881094C31 E Notes ...