Motorola SSETM 5000 service manual Keyload Failure, Vocon

9-28 Troubleshooting Charts: Keyload Failure

9.15 Keyload Failure

Keyload Failure

Obtain correct

KVL and

cable

Verify the use of the correct secure kit and key loader.

No Correct equipment?

Yes

With KVL attached to

radio and radio on,

verify display

message "KEYLOAD"

Synopsis

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.

Verify and repair

connection of UC_CTS, UC_RS232DIN_USB-, and UC_OPT_SEL2 signals from KVL to universal connector to J101

			With KVL attached to radio
No	"KEYLOAD"	Yes		and radio on, initiate a
			keyload by pressing PTT on
	message
	displayed?		the keyloader and look for
					activity on J701-1
	Verify connection
	of KEYFAIL		No			Yes	Verify
	from the universal				Activity?		connection
	connector pin 13 to						across J701
	J101-2 and D301

Good No connection?

Yes

Verify operation of voltage translator circuit by seeing activity on R315

Translator No circuit OK?

Yes

Replace

VOCON

board

Repair

connection

Replace

translator

circuit

Repair	No	Good
connection		connection?
			Yes
		Replace
		secure
		module

MAEPF-27388-B

November 11, 2004 6881094C12-A