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1.
Troubleshooting and Repair
1.1
POWER_UP SELF
CHECK
DISPLAYS
througha self-testroutine
to
checkfor
system
failures.
Table
7
lists the error
messages
that may
appear
in
the
display,
followed by
the
possible
causes and
remedies.
When
you power up
the
radio,
the
control
head
goes
Table
7.
Power-Up
Self
Check
Display
(Note
1)
Notes:
second each. When more than one condition is present, only
one
message
will
be
displayed.
New messages
will
be displayed as each condjtion is corrected.
Model A3 does not have this
fail
message.
N,4odel
A3
does
not have
this
display condition.
On
Model
43,
"OL" display indicates
out--of-lock
condition.
On Model A3, "EE"
display
indicates
this
EEPRONI condition.
On
Nlodel A3, continuous cycling of "F1", "9", "99" indicates a
serial
number mismatch
2.
4.
5.
6.
Power-Up Self-Check Display for
A3 Model Radio
Table
7
8t07/89
Condition
Display
Possible cause
Remedy
A
FL 01/81
The pattern stored
in
the Memory Board
ROM is incorrect.
Replace Memory
Board.
B
FLOl/82
The pattern stored
in
the Memory
Board EEPROM is incorrect.
a.
Reprogram EEPROM from ARCHIVE file if
available. See paragraph 4.7.4, step
6a.
b.
Replace Memory Board
c
FL
01/83
Radio has conditions A
and
B.
D
FL
01
/84
Memory Board
(EPROM
is blank.
Replace Memory
Board.
E
FL
01/85
Radio has conditions A
and
D.
F
FL
01/86
Radio has conditions
B
and
D.
G
FL01t87
Radio has conditions
A,
B
and
D.
H
FL
01/88
Memorv Board RAM defective.
Replace Memory Board.
I
FL
01/89
Radio has conditions A
and
H.
J
FL
01/8A
Radio has conditions
B
and
H.
K
FL
O1/88
Radio has conditions
A,
B
and
H.
L
FL
01/8C
Radio has
conditions
D
and
H
M
FL
01/8D
Radio has conditions
A,
D
and
H
N
FL
01/90
(Note
2)
Serial Bus Failure. May be
a
control head
failure. a radio command board failure.
a.
See Control Head Troubleshooting.
or
a
cabling failure.
b.
Check rear options connector cabling.
c.
Replace Command Board.
o
FL01/92
The pattern stored within the
micro-
computer EEPROM is incorrect.
lnitialize EEPROM (see paragraph 4.7.5).
P
FL
01/93
Radio
has
conditions A and O
O
FL01t94
Microcomputer EEPROM is blank
Replace Command Board.
R
FL
01/95
Radio has conditions A and Q.
S
FL 05/81
Control Head ROM
is
detective.
Replace Control Head Board.
T
FL
05/88
Control Head ROM
is
detective.
Replace Control Head Board.
U
FAIL
OO1
Radio has an error
with
its EEPROM; one
or more modes
in
the
radio has an
in-
correct pattern
in
the
Memory Board
EEPROM. Radio will function normally
until
a
corrupted mode
is
accessed; then
"FAIL 002" will be displayed (see below).
a.
Reprogram EEPROM from ARCHIVE
file
if
available. See paragraph 4.7.4, step
6a.
b.
Replace Memory Board.
(Note
3)
BLANK DISPLAY
BUT TX AND
BUSY LED'S
LIT BRIEFLY
AT POWER
UP
Display malfuction.
Replace Control Head Board.
W
(Note
4)
FAIL
OO1
Synthesizer
oui-of-lock
condition.
See Synthesizer Troubleshooting.
X
(Note
5)
FAIL
OO2
The mode
which
has been accessed
has an incorrect pattern
in
the
Memory Board EEPROM. (Refer to
ER
01/02
above,
ltem
S).
a.
Reprogram EEPROM from ARCHIVE file if
available. (See paragraph 4.7.4, step
6a.
b.
Replace Memory Board.
(Note
6)
FAIL
999
Serial number
in
the
Memory Board
and
the
microcomputer do not match;
Radio
will
not
function but will enter
test mode operalion.
Replace the Memory Board with the proper one.
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