5-30
Troubleshooting Charts:
Keyload Failure
5.12 Keyload Failure
KEYLOAD
FAILURE
Synopsis
This failure relates to only secure
equipped radios and indicates a
failure to load key with the KVL
indicated by the message “KEYFAIL”
and keyfail tones.
Typical failures would be:
1) Open between the GCAI connector
and the microprocessor which
prevents the keyloading.
2) Use of the wrong KVL or keyload
cable.
3) Failure of the secure circuitry.
4) No secure personality in the radio
codeplug.
With KVL attached to radio
and radio on, verify display
message “KEYLOADING”
Verify Keyfail
connection on
Controller board
atJ4001_42
Correct
Equipment?
Activity?
Keyloading
Message
displayed
With KVL attached to the radio
and radio on, initiate a keyload
from the keyloader and look
for activity on keyload signal at
J2004_20 on expansion
board.
Check for activity
at R5023
Obtain correct KVL
and cable
Yes
Yes
Yes
Yes
No
No
Yes
No
Verify the radio has been programmed with the correct secure algorithm and
verify using the correct keyloader.
Algorithm options:
NNTN7710
AES, DVP_XL, DUAL DISPLAY
NNTN7699
AES, DVP_XL
NNTN7708
DVP_XL, DUAL DISPLAY
NNTN7697
DVP_XL
NNTN7705
AES, DES, DES_XL, DES_OFB, DUAL DISPLAY
NNTN7694
AES, DES, DES_XL, DES_OFB
NNTN7701
AES, DUAL DISPLAY
NNTN7690
AES
NNTN7704
DES, DES_XL, DES_OFB, DUAL DISPLAY
NNTN7693
DES, DES_XL, DES_OFB
Use KVL-3000 or later model keyloader with keyload cable number CKN6904A
Verify GCAI data path.
Check the following
signals: GPIO, One Wire
Repair connector using
programming failure
flowchart for details.
No
Inspect and repair
keyload circuit on
Controller board
Activity?
Replace
Controller
Board
Activity?
Check and repair
connection from
P2004_20 on
Expansion Board
No
Inspect flex to
board
connections and
Replace Radio
Housing if
neccessary
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: ......