Motorola APX 6000 Service Manual

5-32 Troubleshooting Charts: Keyload Failure
5.15 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”
Initate a keyload
and verify activity
on VoCon board
at J4001_65
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 R2005 on expansion board.
Initate a keyload
and check for
activity at
J4001_38
Obtain correct KVL
and cable
Yes
No
Yes
No
Yes
No
Verify the radio has been programmed with the correct secure algorithm and
verify using the correct keyloader.
Algorithm options :
NNTN8171A APX 6000 DVP-XL KIT
NNTN8172A APX 6000 DVP-XL KIT with Bluetooth
NNTN8173A APX 6000 AES KIT
NNTN8174A APX 6000 AES KIT with Bluetooth
NNTN8175A APX 6000 DES/DES-XL/DES-OFB KIT
NNTN8176A APX 6000 DES/DES-XL/DES-OFB KIT with Bluetooth
NNTN8177A APX 6000 NO ALGO BASIC VERSION
NNTN8178A APX 6000 NO ALGO FULL VERSION with Bluetooth
Use KVL-3000 or later model keyloader with keyload cable number CKN 6904A
Verify GCAI data path.
Check the following
signals: GPIO0, One Wire
Repair connector using
programming failure
flowchart for details.
No
Initiate a keyload
and check for
activity at R2501 of
Expansion
Activity?
Inspect
U4003.
Measure
power pin5?
Activity?
Check and repair
expansion to
vocon connection
from P2001_65 to
J4001_65
Yes
No
Inspect GCAI
flex to board
connections and
Replace Radio
Housing if
necessary
Proceed to
DC Flow
chart
No
Inspect U4003
with keyloader
attached.
Measure mux
select pin6.
Yes
Yes
Replace U4003
Yes
Inspect Q4001 with
keyloader attached . .
Measure BJT input pin2.
No
No
Replace Expansion
Board
Activity?
Yes
Check and repair
expansion to vocon
connection from
P2001_38 to
J4001_38
V = ~1.8V
V = ~0V
V = ~5.0V?
Replace Q4001
Yes
Replace VoCon
Board
No

Motorola APX 6000 Specifications

General

Brand	Motorola
Model	APX 6000
Category	Two-Way Radio
Language	English