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3.
Following the self test, the display will begin to "cycle" segment groups
and status indicators in the following manner:
Note:
Depending on the internal state of the CPU, the "cycle" may start
with a different value than that which is listed betow. This cycle
will repeat itself until the TEST SWITCH is moved off of the T,
position, or until the Monitor is turned off.
The segment groups will begin to cycle through successive decimal and
hexadecimal values, with each individual segment of each segment group
displaying the same number or letter. The display will cycle through each
step, remaining at each step for approximately 1.5 seconds.
All status indicators will not turn on when the segment values cycle
through the following:
0, 2, 4, 6, 8, A, C, E, 0, 2, 4, 6, 8, "", L, E
see Figure 29 for an
example.
All status indicators will be turned on when the segment values cycle
through the following:
1, 3, 5, 7, 9,
b, d,
F, 1, 3, 5, 7, 9,
H, P, (blank)
see Figure 30
for an example.
4.
ff the Monitor does not cycle through as described, you may have a faulty
main PCB.
You can either replace the main PCB (refer to the Main PCB
section on page 58), or return the Monitor to Bard for service.
Figure 30
Removing the Liquid
Equipment Required
:
1%
Crystal Display (LCD)
+
No. 2 Phillips head screwdriver
i
+.
No. 1 Phillips head screwdriver
*
Small standard screwdriver
+
Needle nose pliers
sensitive electronic devices.
Do not attempt to repair any internal
components without proper ESD (Electro-Static Discharge)
handling equipment.
Failure to properly ground both your body
and your work station could result in damage to the Monitor.
° 4
Caution:
The Bard CritiCore Monitor main and display PCB's contain static
Note:
Review the contents of the LCD replacement parts kit (see the
Replacement Parts List on page 64), to confirm which paris you
may need to keep/discard during disassembly.
Procedure
1.
Remove the bezel enclosure per the Removing the Bezel Enciosure
procedure on page 20.
Figure 31
2.
Disconnect the membrane switch mylar ribbon cable from the display
PCB (see Figure 31).
:
3.
Remove the four (4) 4-40x1/4" Phillips. pan-head screws which attach the
display PCB/LCD assembly to the bezel top.
Separate the display
PCB/LCD assembly from the bezel top by gently pulling up on the
DA
,
display PCB corners as illustrated in Figure 32: Take care to retain the"
two o-rings on the temperature jack of the display PCB (arrow in Figure
32).
Figure 32
Page 30
Bard CritiCore Monitor Service Manual
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