a. BEFORE OPERATION, perform the (B) PMCS.
b. DURING OPERATION, observe the performance of the equipment related to the (D) PMCS.
c. AFTER OPERATION, perform the (A) PMCS.
d. If the equipment was not used during the week, perform the (B), (D), and (A) PMCS together
the (W) PMCS.
e. If the equipment fails to operate, try troubleshooting (refer to 3-6). If the equipment is
damaged, report it using the proper forms. See TM 38-750 for instructions.
The Item No. column
in table 3-1 shall
as a source
of item numbers for the
TM Number column on DA Form 2404 (Equipment Inspection and Maintenance Worksheet) in
recording the results of the PMCS.
g. If the multiplexers are scheduled for administrative storage (1 to 45 days), perform the
PMCS immediately after removing from storage.
The PROCEDURES column in your PMCS chart instructs you to
"check and have repaired or adjusted as necessary." Carefully follow
these instructions, and if tools are needed or the chart instructions
tell you, get organizational maintenance to do the necessary work.
If your equipment must be in operation all the time, check and service
only those items that can be checked and serviced without disturbing
operation. Make the complete checks and services when the equip-
ment can be shut down.
Routine checks like cleaning, dusting, washing, stowing items not in use, covering unused
receptacles, and checking for loose nuts and bolts are not listed as PMCS checks. They are
things that should be done when deemed necessary.
Insure all transceivers have their power source grounds joined
together at the multiplexer ground lug before connecting coax cables.
Connect an earth ground to the multiplexer ground lug.
Insure couplers, band-pass filters, and termination units in all vacant
filter jacks are securely connected. Loose connections can cause rf