TM 11-6625-2709-12
3-11. Quarterly Preventive Maintenance Checks and Services Chart.
Procedure
References
Item
Seq no.
See that Radio Test Set AN/ARM-92B is complete.
1
DA Pam 310-4.
Check to see that all pertinent publications are available. The
2
Publications
technical manuals must be complete and in usable condition
without missing pages. All changes pertinent to the publications
must be on had.
DA Pam 310-4.
Check to see that all urgent MWO's have been applied to the
Modification
3
work orders
equipment and that all routine MWO's have been scheduled.
Connect the equipment as shown in the block diagram (fig. 24)
4
Operational
for this test.
checks
Equipment
Test procedure
Performance standard
control setting
a. All three lamps
a. Power test
Set the power a Observe VOR/LOC
switch on the
28VDC and 115VAC
should light.
lamps, and the GS
control unit to
28VDC lamp.
PWR (all
other switches
b. Insert the probe of
b. Multimeter should
TM 11-5826-226-34
and controls
the multimeter into
for Radio Receiving
may be in any
indicate 27.5 0.5
position) .
V dc.
the test point pro-
Sets AN/ARN-82/
A/B.
vided in the center
of the VOR/LOC 2A
fuse cap.
c. Multimeter should
TM 11-5826-226-34
Insert the probe of
for Radio Receiving
the multimeter into
indicate 115 5 V
the test point pro-
ac.
Sets AN/ARN-82/
A/B.
vided in the center
of the VOR/LOC 1A
fuse cap.
c. Insert the probe of
TM 11-5826-226-34
d. Multimeter should
for Radio Receiving
the multimeter into
indicate 27.5 0.5
V dc.
the test point pro-
Sets AN/ARN-82/
A/B.
vided in the center
of the GS 1A fuse
cap.
On Radio Test d. Observe the indica-
a DEVIATION meter
b. BEARING
TM 11-5826-226-34
selector
tion on the
should indicate 0
Set TS-2500B/
for Radio Receiving
15 microamperes.
switch test
ARM-92B
DEVIATION meter.
Sets AN/ARN-82/
only, set the
A/B.
b. FUG meter should
e. Observe the indica-
IND TEST
switch to
tion on the FLAG
indicate 300 5.0
meter.
microamperes.
RCVR V/L.
Set the MODE
f. Observe the indica-
c. TO- FROM meter
switch to
400HZ . Set
should give a from
tion on the TO-
FROM meter.
the BRG-OBS
indication (needle
switch to BRG.
to the right of 0).
Set the BEAR-
ING selector
switch to 0.
Set the
(Cont)
3-4
