Troubleshooting Charts:
Secure Hardware Failure
5-31
5.13 Secure Hardware Failure
Fail 09/10 or 09/90 Secure
Hardware Failure
Use an ohmmeter to electrically verify the following secure
related signals on the controller board and the Vdd levels:
Signal
Probe Point
Level
VDD-IOP
R5007
1.875 V
VDD_IOM
R5008
1.875 V
VDDC
R5009
1.875 V
Use a voltmeter to measure voltaVerify electrical activity at
the following signal probre points at power up:
MACE_CODEC_FSYNC
R5010
MACE_CODEC_CLK
R5003
RED_TX_MACE
Test point – F_SSIR_TXMACE
RED_RX_CODEC
Test point – F_SSIR_RX_CDC
Replace respective
source IC or
Controller Board
Levels good
good?
Signals good?
Replace
Controller Board
Repair DC
Voltage
Regulators
No
No
Yes
Yes
Synopsis
This failure relates only to secure
equipped radios and indicates a power
up self test failure for the secure
circuitry. More specifically this failure
indicates a failure in communications
between the DSP and the secure
circuitry. The secure circuitry is not
considered to be field repairable so
troubleshooting is limited to verifying a
problem with the secure circuitry and
replacing the controller if required.
Use an oscilloscope to
measure a 4MHz clock
signal at R6113 –
ENC_CLK_4MHz
Signal Present?
No
Repair CPLD
circuitry
Yes
Yes
Summary of Contents for ASTRO APX 7000
Page 1: ......
Page 4: ...iv Document History Notes ...
Page 24: ...2 4 Radio Power DC Power Routing VOCON Board Notes ...
Page 98: ...3 74 Theory of Operation Global Positioning System GPS ...
Page 163: ...Troubleshooting Charts PA Failure 5 59 ...
Page 164: ...5 60 Troubleshooting Charts PA Failure ...
Page 276: ...7 58 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 318: ...8 42 Schematics Boards Overlays and Parts Lists Transceiver RF Boards VHF 700 800 Notes ...
Page 380: ...8 104 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF1 700 800 MHz Notes ...
Page 432: ...8 156 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF1 VHF Notes ...
Page 458: ...8 182 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF1 UHF2 Notes ...
Page 498: ...8 222 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF2 700 800 MHz Notes ...
Page 546: ...8 270 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF2 VHF Notes ...
Page 606: ...8 330 Schematics Boards Overlays and Parts Lists VOCON Boards Notes ...
Page 638: ...Glossary 10 Glossary Notes ...
Page 643: ......