Install guide

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. 877408-2-
Continued
Malfunction
Test procedure Normal indication
indication/corrective action
2u. Set PS BATTERY and
VEHICLE circuit breakers CB1
and CB2 to OFF
2v. Set TTY printer MOTOR
switch to OFF
2w. Press SPUON switch-indicator SPU ON switch–indicator goes off
to off
2x. Disconnect equipment
2y. Record IMU alignment check-
sum, date of alignment and
IMU serial number and stem in
IMU tape compartment
2z. Remove and save IMU align-
ment TTY printout
2aa. Proceed to paragraph 4-12
TEST COMPLETED
Change 6
4-90.11/(4-90.12 blank)