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E331.E2501.061.21.02.02
System SIRECUST 1280/1281
Bedside Monitor - Service Manual
4.9.4.
4.9.5.
Reinstall the Master Option Board
following the procedure outlined in
Section 4.9.5.
Installing Sub-Option
Boards
(SOB)
Refer to Figure 4-6 for locations
of specific sub-option boards.
CAUTION:
Use 'extreme
care
and
properly
orient the sub-option
board
when
installing it on a Master
Option
Board.
The male pins and receiving
female
connectors
are
the
same
for
each corner.
Remove
the
MOB
following
the
procedure
outlined
in
Section
4.9.1.
Orientate
the
SOB
to align
the
securing screw hole with the hole
on the
MOB,
and the male
con-
nectors with the sockets.
Gently seat the board and secure
it to the MOB
with a screw.
NOTE:
Do not remove the protective
- mylar shield covering the solder side of
the board.
Install activation jumper as noted
in Figure 4-6.
Reinstall
the
MOB
following
the
procedure
outlined
in
Section
4.9.5.
Installing
the
Clock
Board,
Master Option Board, or 4-Ch
Analog Option Board
Verify
the
positioning
of
any
jumpers
in accordance
with the
configuration given in Appendix C.
Insert
the
board
into
the
card
guides
for
connectors
X81
and
X82 on the Motherboard,
located
between
the
board
holddown
5a.
4.10.
4.10.1.
standoff
and
the
CRT,
with
the
component
side
of
the
board.
facing in the direction of the CRT.
Carefully
position
the
board
connectors
X1
and
X2
into X81
and X82 on the Motherboard, and
press on the ejectors to seat the
board.
NOTE:
The
ejectors
should
lie flat
along the top edge of the board.
Position
the
holddown
bar,
and
secure the bar to the right side
panel and to the board holddown
standoff
using
Phillips-head
screws and washer.
Go to Step 9 if installing a Clock
Board.
Go
to
Step
8
if installing
an
Analog Option Board.
Insert
and
tighten
Phillips-head
screws
with
washers
into
holes
near
X5
and
X7
on
the
rear
chassis,
to
secure
board
connectors X3-X4 and X5-X6.
Go to Step 9.
insert and tighten a Phillips-head
screw and washer into screw hole
near X7, to secure board connec-
tor X3 to the chassis.
Close
the
monitor
following
the
procedure
outlined
in
Section
4.1.2.
Deflection Board, A160/A310
Refer to Figure 4-7.
Removing the Deflection
Board:
Remove
the
outer
case
of
the
monitor
following
the
procedure
outlined in Section 4.1.1.
Page 4-11
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