ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
Malfunction
indication/corrective
action
Normal indication
Test procedure
NOTE
This procedure uses tape reader, part no. 877406-1.
The Test Procedure column contains the test operation to be performed. The Normal Indication column contains
the desired test set or teletype response to the test operation. Malfunction indication(s) and corrective action(s) are
listed in the third column.
All switches, switch-indicators, and indicators called out in the procedure are located on the SPU, unless otherwise
indicated.
The memory unit installed in the computer must be the one which is to be dedicated to the IMU being calibrated.
If the memory unit is used for other testing after the alignment is completed, the calibration data will be destroyed
and the IMU must be realigned.
Check that tape reels are not deformed and that tape runs smoothly through tape reader head.
1. TEST SETUP
NOTE
Steps 1a thru 1u may be performed
with the PADS on the workbench or
on the alignment surface, depending
on the previous setup.
1a. Check that the diagnostic align-
ment program is loaded into
computer memory and that the
computer is functional in ac-
cordance with table 4-6 or 4-6.2
1b. Check that the equipment is
connected for computer testing
in accordance with figure 4-3
1c. Check that EXECUTE switch-
indicator is lighted. Press it as
required
1d. Check that TTY printer MO-
TOR switch is set to ON
1e. Check that + 28V power source
and PS BATTERY and VEHI-
CLE circuit breakers CB1 and
CB2 are ON
1 f . Check that PADS ON/OFF
switch-indicator ON is lighted.
Press it as required
1g. Press EXECUTE switch-indica-
tor to off
1h. Check that tape reader SPOOL-
ING switch is set to DISABLE
Change 6
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