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TN
LOK
E331.E2501.061.21.02.02
System SIRECUST 1280/1281
Bedside Monitor - Service Manual
Lock washer
Nut —
Securing standoff
Inside 1280/1
Back panel 1280/1
Figure 4-5.
Line Driver Board D Connector Mounting
4.6.
4.6.1.
4.6.2.
Detail
Reassemble the monitor following
the procedure outlined in Section
4.1.2.
Display Processor Board,
A171/A371/A372
- Refer to Figure 4-3.
Removing the Display
Processor Board
Remove
the
outer
case
of
the
monitor
following
the
procedure
outlined in Section 4.1.1.
Remove the two screws
(A) and
washer securing the holddown bar
(B) to the right side panel and to
the standoff. Save the holddown
bar and hardware for reassembly.
Simultaneously
lift the
two
red
ejectors on the top of the board,
and pull vertically on the ejectors
to
free
the
board
from
the
Motherboard and lift it out.
Replacing/Installing Software
Remove
the
Display
Processor
Board
following
the
procedure
outlined in Section 4.6.1.
4.6.3.
4.7.
Remove
the
EPROMs
from
J27,
J28,
J42,
and
J43
using
an
IC'
extractor.
Carefully
insert the
replacement
EPROMs
into the J27,
J28,
J42,
and J43 sockets, with the notches
facing
towards
J32
on
the
left
center of the board.
Press
firmly
on
each
of
the
EPROMS
to
seat
them
in
the
sockets.
Reinstall
the Display
Processor
Board
following
the
procedure
outlined in Section 4.6.3.
Installing Display Processor
Verify the positioning of jumpers in
accordance with Appendix C.
Insert
the
board
into
the
card
guides
for connectors
X51
and
X52
on
the
Motherboard,
identi-
fied
by the
position
of the
red
color
code
on
the front
card
support plate, with the component
side of the board facing the CRT.
Carefully
position
the
board
connectors
X1
and
X2
into X51
and X52 on the Motherboard.
Firmly seat the board.
NOTE:
The
ejectors
should
lie flat
along the top edge of the board.
Position
the
holddown
bar
(B),
and
secure
it to the
right side
panel and standoff using Phillips-
head screws (A) and washer.
Close
the
monitor
following
the
procedure
outlined
in
Section
4.1.2.
Front End Board, A190
Refer to Figure 4-3.
Page 4-7
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