Field Service Procedure – Replacement EL Motor Kit, W-Encoder, Hi-
Torque, Coastal 24 & 30
Page
2
of
9
Document No
135396 Rev A
Copyright © Sea Tel, Inc 2011 - The information contained in this document is proprietary to Sea
Tel, Inc. This document may not be reproduced or distributed in any form without prior written
consent of Sea Tel, Inc.
5.
Verify
the
Drive
of
the
Elevation
Axis:
Drive
from
the
elevation
motor
should
be
consistent;
rolling
the
system
will
cause
the
PCU
to
issue
drive
(this
can
be
done
by
removing
the
radome
top,
unbolting
the
system
from
its
mounting
point
and
rolling
the
dome
base
from
front
to
back).
Observe
the
motor
and
verify
if
it’s
functioning
correctly.
If
the
motor
skips
instead
of
driving
smoothly
it’s
possible
a
winding
has
failed
or
if
no
drive
is
present
its
possible
there
is
a
short
in
the
motor.
If
it
is
suspected
there
is
a
dead
spot
in
the
motor
power
down
the
system
and
gently
rotate
the
axis
by
moving
the
belt
backwards
and
forwards.
This
in
turn
will
rotate
the
motor
pulley
and
shaft
and
it
should
be
apparent
if
there
is
a
dead
spot
as
the
rotation
will
feel
taught
at
that
position.
*Caution:
Be
extremely
careful
rotating
the
pedestal
around
while
your
fingers
are
in
this
area
to
prevent
pinching
or
crushing
your
fingers
in
the
pedestal
assembly.
Another
indication
that
the
system
isn’t
driving
correctly
is
if
the
unwrap
light
is
illuminated
on
the
control
panel,
yet
the
elevation
position
isn’t
changing,
this
usually
indicates
that
the
motor
can’t
drive
in
elevation,
therefore
isn’t
searching
correctly
and
in
turn
the
elevation
feedback
from
the
encoder
isn’t
moving
(the
other
option
is
the
encoder
is
defective).
6.
Run
the
Built
‐
In
Test
(BIT):
Coastal
PCU
software
2.06
and
above
supports
a
built
in
test
function
used
to
isolate
problems
with
components
in
the
antenna
system.
To
run
the
BIT
test
power
off
the
antenna
by
pressing
the
Power
button
on
the
control
panel,
now
press
and
hold
the
Next
button,
and
then
press
the
Power
button.
As
opposed
to
initializing
the
control
panel
will
now
display
“Built
In
Test
Next
to
Begin”.
Pressing
the
Next
button
will
run
automatically
until
completed,
if
no
faults
are
found
with
the
system
“BIT
Finished
No
Errors”
will
be
displayed
or
unless
a
an
error
is
discovered
the
test
will
pause
while
the
specific
error
is
highlighted,
this
should
be
recorded
for
further
diagnostics.
Pressing
next
will
continue
to
run
the
test.
Any
errors
recorded
require
further
diagnostics
as
per
the
below
information.
6.1.
Analogue
to
Digital
Convertor
Test.
This
test
checks
for
basic
communication
with
the
Analogue
‐
to
‐
Digital
Converter
on
the
PCU
main
board.
A
bad
A/D
could
make
all
other
tests
fail.
“Testing
ADC”
will
be
displayed
as
the
test
runs.
An
Error
code
1.01
‐
1.08
will
be
displayed
if
one
of
these
tests
fails.
If
any
test
fails,
replace
the
PCU
and
re
‐
run
BIT
tests.
6.2.
Digital
to
Analogue
Convertor
Test.
This
test
checks
the
basic
integrity
of
the
Digital
‐
to
‐
Analogue
Converter
on
the
PCU
main
board
by
looping
back
one
of
its
outputs
to
the
D/A.
“Testing
DAC”
will
be
displayed
as
the
test
runs.
An
Error
code
2.01
‐
2.21
will
be
displayed
if
one
of
these
tests
fails.
If
any
test
fails,
replace
the
PCU
and
re
‐
run
BIT
tests.
Summary of Contents for Coastal 24
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