Install guide

ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
Table 4-14. IMU Testing, Alignment, and Troubleshooting – Continued
Malfunction
Test procedure
Normal indication
indication/corrective action
NOTE
Do not move PADS again until in-
structed to do so.
2f.
2g.
2h.
2i.
Type XXX XX XX.X RDY for
degrees, minutes, and seconds of
latitude. Leave a space between
each numerical grouping
Type XXX.X RDY for correct
elevation in feet
Type XXXX RDY for correct
Julian data
Type correct IMU serial number
in format XXXX RDY
NOTE
The theodolite is always required for
IMU calibration. If a hard IMU fail-
ure is suspected, the theodolite is
not required for diagnosis.
2j. Type BYP if theodolite will not
be used
NOTE
TEST NUMBER X IN PROGRESS
000000. 000000 will print out peri-
odically during test to indicate the
start of a subtest. The time since
start may also be printed.
If a failure occurs, the number will
be nonzero and IMU, CMP, or PSU
FAILURE will print. A set of failure.
subcodes will then be printed which
provide useful information for depot
repair of the IMU and computer.
Replace or repair the computer or
power supply as appropriate. Return
a failed IMU to depot with a copy of
the TTY printout.
TTY prints out:
RDY
ENTER ELEVATION: (FT) RDY
TTY prints out:
RDY
ENTER DATE: (JULIAN) RDY
TTY prints out:
RDY
ENTER SER NO: (DIGITS) RDY
TTY prints out:
RDY
ALIGNMENT PROCEEDING
IF THEODOLITE WILL NOT BE
USED, TYPE: BYP
TTY prints out:
BYP
TTY prints out:
SERIAL NO INCORRECT:
Load correct IMU alignment
tape
NOTE
There are 10 subtests, but one or more will be deleted depending on the use of the theodolite.
data
At the end of a subtest, data may be printed out. The message AT LEAST ONE OUT-OF-CAL IN TEST
NUMBER X means an out-of-tolerance parameter was recalibrated. It is not a failure message and no operator
action is required.
Change 5
4-87