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E331.E2501.061.21.02.02
System SIRECUST 1280/1281
Bedside Monitor - Service Manual
NOTE:
of the CRT to chassis ground, at
the
grounding
lug
on
the
the
board near the neck of the CRT.
Carefully lift the board up out of
the
card
guide
on
the
monitor
chassis, and then slide the board
towards the rear of the monitor to
free it from the neck of the CRT.
Remove
the
-board
from
the
monitor.
Be
careful
to
NOT
bend
the
connector pins on the CRT.
4.11.2.
1.
Installing the Z-Amp Board
Carefully slide the board over the
neck of the CRT, and position the
board into the card guide on the
bottom of the chassis.
NOTE:
The Deflection Board with heat
sink
must
be
removed
to
install
the
Z-Amp Board.
Attach the ground
wire, from the
conductive coating on the outside
of the CRT to chassis ground, to
the grounding lug located on the
back
side of the board
near the
neck of the CRT.
Plug the 7-pin socket connector
into the CRT.
Plug
the
high-voltage
connector
into the high-voltage anode on the
left side of the CRT.
Plug
X1,
X2,
and
X3
into
their
connectors located at the top on
the component side of the Z-Amp
Board,
and
X4 to its connector
located below X3 on the compon-
ent side of the
board
near the
CRT shield.
Measure the high-voltage present
at the
anode
of the
CRT
and
adjust if required. See Chapter 7.
7.
4.12.
4.12.1.
4.12.2.
Complete the procedure outlined
in Section
4.10.2. to reinstall the
'
Deflection Board and reassemble
the monitor.
Operator Interface Board,
A291/A292
Refer to Figure 4-8.
Removing the Operator
Interface Board
Remove
the
outer
case
of
the
monitor following
the
procedure
outlined in Section 4.1.1.
Remove the Front Panel following
the procedure outlined in Section
4.17.3.
Remove all PC boards installed in
the 12 inch (30 cm) section of the
monitor.
Refer to procedures
of
Sections
4.4.1,
4.6.1,
4.7.1,
and
4.8.1.
NOTE:
it is not necessary to remove
any
PC
board
(Clock
Board,
Master
Option Board, or 4-Ch Analog Option
Board) installed in the 10 inch (25 cm)
section adjacent to the CRT.
Unplug
the
ribbon
cable
from
connector X7 on the Motherboard.
Remove
the
four
Phillips-head
screws,
washers,
and
standoffs,
securing
the card
support
plate
and
Operator
Interface
Board
to
the monitor chassis. Save the card
support
plate
and
hardware
for
reassembly.
Lift the board out of the guide and
up out of the monitor.
Replacing/Installing Software
NOTE:
To replace or install software in
the
Operator
Interface
Board,
it is
not
necessary to remove the board from the
Page 4-14
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