Install guide

ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
Table 4-17. IMU Automatic Test Mode Malfunction Teletypewriter Messages
Teletypewriter malfunction message
Corrective action
IMPROPER DATA ENTRY
Data must be reentered
Program did not recognize data entry
ALIGN TIMING IMU FAIL
Reasonability test fail
Program cannot advance. Shut down equipment and return IMU to
depot*
NEED DEPOT CAL
Certain alignment constants are out of tolerance and cannot be
determined without a depot alignment, Shut down equipment and
return IMU to depot*
ALIGN QUALITY IMU FAIL
TEMPERATURE IMU FAIL
DISCRETE IMU FAIL
SYNCHRO ACCEL. IMU FAIL
SYNCHRO RATE FAIL
MEMORY TEST FAIL
OP CODE TEST FAIL
PRIORITY INTERRUPT FAIL
Certain alignment constants are out of specification and cannot be
calibrated. Return IMU to depot*
IMU failures. Return IMU to depot*
Built-in-test indicates a computer failure while aligning IMU
Repair computer and recalibrate IMU. See table 4-10 for corrective
action
SERVICE INTERRUPT FAIL
SERIAL DATA I/O FAIL
ANALOG DATA I/O FAIL
PLATFORM I/O FAIL
● Send copy of TTY diagnostic print-outback to depot with faulty IMU.
4-99