.
TM 5-5420-226-20-1
STE/ICE
TEST PROCEDURES
(CONTINUED)
Confidence Test
~
=4
l Dial TEST SELECT switches to 66.
TEST SELECT
l Press and release TEST button.
l Check that VTM display indicates
and holds.
Does VTM display and hold m
?
Ra-dial 66 and press TEST
Does VTM display indicate and
r
I
v
l Dial TEST SELECT switcheg to 99,
l Check that several numbers appear on VTM display,
~,
~
and others.
l Wait for VTM display to indicate ~~.
NOTE
The VTM can fail the Confidence Test
if a bad transducer is connected to it.
If the VTM fails, the Confidence Test
when powered by W5, (TK power ca-
ble), disconnect all cables from J2, J3
and J4 and try ag”ain.If it passes, one
of the transducers Is bad. If it fails,
the VTM has failed internally.
l Repeat Confidence Test.
l Wait for VTM display to
indicate ~PASS].
Does VTM display Indicate
Wm?
““
Replace STE/lCE set.
TA106747
4-58
