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
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 ...