ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
Table 4-14.1 IMU Testing, Alignment, and Troubleshooting Using Tape Reader, Part No. 877406-2
Continued
`Malfunction
indication/corrective action
Normal indication
Test procedure
SELECT TEST MODE
Checksum is incorrect Refer to step 3k
Checksums are equal
2b. Compare printed checksum
of table 4-6.1 or step 2V of table
written on the front of the
4-6.3
punched tape in use
2c. Type IMU to select IMU auto- TTY prints out:
NOTE
matic alignment and test se- IMU
From this step forward, the TTY
quence
may print out any of the malfunction
SER NO XXXX
messages listed in table 4-17, Take
DATE XXXX
the corrective action shown in table
4-17.
CHECKSUM XXXXXX
MOVE IMU TO APPROX 45 DEC
HEADING
WHEN DONE TYPE: RDY
Data matches
Reload IMU alignment data tape
2d. Verify that the printed serial
number matches the' serial num-
her of the IMU under test and
t h e checksum matches the
checksum on the IMU alignment
data tape
NOTE
2e. Type RDY when 45 (10) TTY prints out:
heading request has been com- RDY
The program will accept all data on
pleted
one line, thus if the operator makes
a mistake prior to typing RDY while
(SEC) RDY
entering data via the TN, he should
hit the carriage return key and reen-
ter the data. If the diagnostic pro-
gram does not recognize the entry as
valid, the TTY prints out: IM-
PROPER DATA ENTRY. The oper-
ator should reenter the data.
Change 7
4-90.6
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