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TM 1-1520-248-CL - Army Aviation

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<strong>TM</strong> 1-<strong>1520</strong>-<strong>248</strong>-<strong>CL</strong><br />

8. TIS INTEG switch ⎯ OFF.<br />

9. LMC switch ⎯ OFF.<br />

10. ALE switch ⎯ OFF.<br />

ENGINE RUN-UP ⎯ MMS STARTUP<br />

CHECKS ⎯ COPILOT<br />

1. MMS key ⎯ Press.<br />

NOTE<br />

• MMS run-up requires 3-phase AC power<br />

from the AC generator or external AC<br />

power. Prior to turning the MMS on,<br />

verify required power is available.<br />

• When MMS select switch is set to<br />

PREFLT, the system immediately<br />

checks the output of the LOS CONT<br />

switch on the copilot cyclic control grip<br />

and supplies an opposite bias in order<br />

to zeroize the LOS output. Pressing the<br />

LOS switch during the first 5 seconds<br />

after power turn-on may induce an error<br />

into the bias calculation and cause the<br />

MMS to drift.<br />

2. OPR mode select switch ⎯ PREFLT.<br />

3. GRAY SCALE key ⎯ Select, adjust as<br />

desired, deselect.<br />

4. OPR mode select switch ⎯ FWD.<br />

5. MNL/SLAVE switch ⎯ Press. Observe<br />

MMS slews FWD.<br />

6. Laser codes ⎯ Check; enter as required.<br />

7. MMS current laser code ⎯ select<br />

appropriate code as required.<br />

P-6

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