TM 11-7440-232-12/NAVELEX 0967-LP-275-5010
Section III. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (Organizational)
The purpose of scheduled preventive maintenance checks and services (PMCS) is to prevent trouble, reduce
downtime, and assure that the digital data modem remains in operating condition.
5-9. RECORDS AND REPORTS
Records and reports of preventive maintenance checks and services must be made in accordance with the
requirements set forth in TM 38-750 and DA PAM 738-750 The Army Maintenance Management System (TAMMS). Use
your PMCS TABLE Item No. column to get the number for the TM ITEM NO. column of DA Form 2404 Equipment
Inspection and Maintenance Worksheet.
5-10. PMCS TABLE
A PMCS TABLE for the Digital Data Modem MD-701(*)IUY appears at the end of this section.
If the equipment MUST be in operation all the time, check and service those items that can be
checked and serviced without disturbing operation. Make the complete checks and services
when the equipment CAN be shut down.
a. Weekly schedule
All PMCS listed in the table are required each week.
b. The PMCS can also be used to assist in
Reestablishing service after shut down.
Troubleshooting to determine that the transmit or receive branch, or both, can be operated.
c. Routine checks are NOT listed as PMCS checks. They are checks such as the following
Checking for frayed cables
Storing items not in use
Checking for loose nuts, bolts, and screws
Checking for loose or broken knobs
Routine checks are things that you should do anytime you see they must be done. If you find a routine check like
one of those listed in your PMCS TABLE, it was listed because other personnel reported problems with this item.