Table 4-14.1 IMU Testing, Alignment, and Troubleshooting Using Tape Reader, Part No. 877406-2-cont.

Table 4-14.1 IMU Testing, Alignment, and Troubleshooting Using Tape Reader, Part No. 877406-2-cont. - TM-5-6675-308-340231

Table 4-14.1 IMU Testing, Alignment, and Troubleshooting Using Tape Reader, Part No. 877406-2-cont. - TM-5-6675-308-340233

TM-5-6675-308-34 Position and Azimuth Determining System An/USQ-70 Manual
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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. 877406-2

Continued

`Malfunction

indication/corrective action

Normal indication

Test procedure

SELECT TEST MODE

Checksum is incorrect Refer to step 3k

Checksums are equal

2b. Compare printed checksum

of table 4-6.1 or step 2V of table

written on the front of the

4-6.3

punched tape in use

2c. Type IMU to select IMU auto- TTY prints out:

NOTE

matic alignment and test se- IMU

From this step forward, the TTY

quence

may print out any of the malfunction

SER NO XXXX

messages listed in table 4-17, Take

DATE XXXX

the corrective action shown in table

4-17.

CHECKSUM XXXXXX

MOVE IMU TO APPROX 45 DEC

HEADING

WHEN DONE TYPE: RDY

Data matches

Reload IMU alignment data tape

2d. Verify that the printed serial

number matches the' serial num-

her of the IMU under test and

t h e checksum matches the

checksum on the IMU alignment

data tape

NOTE

2e. Type RDY when 45 (10) TTY prints out:

heading request has been com- RDY

The program will accept all data on

pleted

one line, thus if the operator makes

ENTER LATITUDE: (DEG) (MIN)

a mistake prior to typing RDY while

(SEC) RDY

entering data via the TN, he should

hit the carriage return key and reen-

ter the data. If the diagnostic pro-

gram does not recognize the entry as

valid, the TTY prints out: IM-

PROPER DATA ENTRY. The oper-

ator should reenter the data.

Change 7

4-90.6

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