TM 11-6625-2575-14
DIRECT SUPPORT MAINTENANCE
Section I.
GENERAL
NOTE
7-2. Removal of
Enclosure Panels
AN/USM-203A Sweep Signal Genera-
To gain access to the AN/USM-203A main chas-
tors which require direct support main-
sis, remove the enclosure panels as follows:
tenance shall be processed according to
the procedures that follow. If rf assem-
a. Remove the four screws at the rear of the
instrument which retain the two side panels.
blies are defective, the AN/USM-203A
will require general support mainten-
b. Slide the two side panels out the rear of
the instrument.
7-1. Test Equipment Required
c. Slide the top panel toward the rear approxi-
mately 1 inch to release the retaining lip at the
a. The following test equipment or equal is re-
front of the panel. Lift the top panel off the
quired:
instrument.
242-6032.
d. Slide the bottom panel toward the rear of
the instrument until it clears the four plastic
079-3676.
shows the AN/USM-203A with the enclosure pan-
FSN :6625-753-2116.
els removed.
WARNING
b. The following accessory or equal is required:
Voltages up to +200 volts are present
Attenuator pad, standard 2.0 dB, Weinschel,
in the AN/USM-203A when ac line
Model 50-2.
power is applied.