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Operation AN/APR-44<br />
<strong>TM</strong> 1-<strong>1520</strong>-<strong>248</strong>-<strong>CL</strong><br />
NOTE<br />
• If the ISP fails the AN/APR-44 will<br />
default to ON. Audio will still be present<br />
but at reduced amplitude. No advisories<br />
will display with the ISP failed.<br />
• If the R MCPU fails the AN/APR-44<br />
will default to ON. Audio will still be<br />
present but at reduced amplitude. No<br />
advisories will display with the R MCPU<br />
failed.<br />
1. RADAR DETR circuit breaker/switch ⎯<br />
In/DETR. Allow 1 minute warmup.<br />
2. CW RADAR WARN PWR ⎯ Check ON<br />
displays.<br />
3. Volume ⎯ Adjust as required.<br />
4. Headset ⎯ Verify low pitch tone followed<br />
by brief high pitch tone and momentary<br />
display of MISSILE ALERT ⎯ Al and<br />
MISSILE ALERT ⎯ SAM advisories.<br />
Operation AN/AVR-2A<br />
The AN/AVR-2A is checked simultaneously with the<br />
AN/APR-39A(V)1 system. Once system bit is<br />
completed the system is ready for operation.<br />
P-16
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