Install guide
ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
Table 3-4. Troubleshooting with
Bit
Malfunction
Words
–
Continued
Digit
Value
Malfunction
Probable
cause/troubleshooting
Reference
ID
5
MAL
Al
Serial
data
bus
error
Replace
computer
Data
Buffer
Card
A6
Para
3-15a
detected
(CDU
to
computer)
B
1
LS
,45,6,
or
7
c
1,22,45,6,
Serial
data
bus
error
Replace
control
card
A3
Para
3-17a
or
7
(computer
to
CDU’)
D
1JJ,4,5,6,
CDU
display
register
error
Replace
CDU
display
register
card
A
1
Para
3-17a
or
7
E
12,0r3
CDU
display
register
error
Replace
CDU
display
register
card
A2
Para
3-17a
4
CDU
display
register
error
Replace
CDU
display
register
card
A
1
Para
3-17a
5,6,0r7
CDU
display
register
error Replace
CDU
display
register
cards
Al
and
AZ
Para
3-17a
F
135,7
Not
used
2,4,6
CDU
display
register
error
Replace
CDU
display
register
card
A2 Para
3-17a
3-19