ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
Table 4-6.1. Computer Diagnostic/Alignment Program Using Tape Reader, Part No. 877406-2 Continued
Malfunction
Normal indication
indication/corrective action
Test procedure
SELECT TEST MODE
Checksum is incorrect: Inspect tape
3k. Compare printed checksum to Checksums are equal
reader and tape for dirt. Clean as
checksum written on the front
required
of the PADS diagnostic align-
ment tape number 877418-5
Reload complete diagnostic program
If new checksum is correct, continue
with test. If new checksum is
same as the old (wrong) check-
sum: Perform PADS test set self-
test and take indicated corrective
action
Replace computer card assemblies in
the order shown in step 2h and
reload tape after each card is re-
placed
If new checksum differs from the old
(wrong) checksum: reload tape,
Thoroughly clean or replace tape
NOTE
You may continue performing the
test while the tape is rewinding.
If a computer test is not required:
press EXECUTE switch-indicator to
off; sequentially press PADS ON/
OFF switch-indicator and ENTER
switch to turn off computer; and go
to table 4-11 or 4-14.1 to perform a
CDU or IMU test, respectively.
3l. Set tape reader FAST/SLOW
switch to FAST
3m. Press REVERSE switch-indica- REVERSE switch-indicator lights.
Tape rewinds and stops at begin-
tor to on
ning of reel
3n. Press REVERSE switch-indica- REVERSE switch-indicator goes off
tor to off
3o. Lift tape reader read head cover
and remove tape from tape
reader
4-54.10
Change 1
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