Motorola SSETM 5000 - Manual (Page 132)

November 11, 2004 6881094C12-A
9-28 Troubleshooting Charts: Keyload Failure
9.15 Keyload Failure
MAEPF-27388-B
No
No
Yes
Yes
No
Keyload Failure
"KEYLOAD"
message
displayed?
With KVL attached to radio
and radio on, initiate a
keyload by pressing PTT on
the keyloader and look for
activity on J701-1
Yes
Verify
connection
across J701
Repair
connection
Correct
equipment?
Obtain correct
KVL and
cable
No
Verify and repair
connection of UC_CTS,
UC_RS232DIN_USB-,
and UC_OPT_SEL2 signals
from KVL to universal
connector to J101
Verify the use of
the correct secure
kit and key loader.
With KVL attached to
radio and radio on,
verify display
message "KEYLOAD"
Activity?
Verify connection
of KEYFAIL
from the universal
connector pin 13 to
J101-2 and D301
Yes
No Good
connection?
Repair
connection
Replace
secure
module
Yes
Good
connection?
Verify operation of
voltage translator
circuit by seeing
activity on R315
No
Replace
translator
circuit
Yes
Translator
circuit OK?
Replace
VOCON
board
This failure relates only to secure-
equipped radios and indicates a
failure to load key with the KVL
indicated by the message
"KEYFAIL" and key-fail tone.
Typical failure modes would be:
1) Open between universal
connector uC which places radio
in Keyload mode.
2) Use of wrong KVL or KVL cable.
3) Failure of secure module.
Synopsis