Novametrix Medical Systems 515 Service Manual page 37

Service Manual: Model 515
Calibration and Adjustments:Adjustment Proce
4.2.25
4.2.26
4.2.27
4.2.28
4.2.29
4.2.30
4.2.31
4.2.32
Press the
Test
softkey and verify "NO PROBE CONNECTED" is shown on
display. Plug the sensor simulator or a good probe into the front panel soc
verify "PROBE CONNECTED" appears.
Plug the analog module into the rear panel 25 pin connector, use pins 2, 3
ground reference when measuring the output voltages.
NOTE: This step and the next is for analog output checks only.
Press the
quit
softkey. Press the
Next
softkey to select MONITOR TEST -
press the
Test
softkey. Monitor output pins 1, 4, and 9 of the analog mo(
for the voltages listed below. Use the
Dec
and
Inc
softkeys to verify the va
below.
SATURATION%
PULSE RATE
0
50
100
200
250
OUTPUT VOLTAGE
Pins 1.4.9
0+10 mv
0.5 ± 20 mv
1.00 ±50 mv
2.00 ± 50 mv
2.50 ± 55 mv
Turn the monitor off, simultaneously press the second softkey from the left ,
the power button, verify all the segments on the VFD display tire illuminal
along with all the LEDs, and the audio alarm, for approximately 8 secor
Then verify that the units resets into normal operating mode.
2288 Front End Board
With the monitor off simultaneously press the leftmost softkey and the poi
button, as soon as the unit beeps press and hold the second softkey from
right, verify the unit powers up in test mode,
"Novametrix Ltd. Production
T(
will appear momentarily.
Use AGND as reference for all measurements unless otherwise stated (top
R58). Measure the following voltages;
IC21 pin 4.+12.8 VDC ± 0.5V (+VA21)
IC21 pin 11.-12.8 VDC ± ().5V (-VA21)
IC12pin4.5.1 VDC ± 0.02 (+5VA)
IC15 pin 1.+4.2 VDC ± 0.2 (VREF+)
Use the
Next
softkey to select
"MONITOR TEST
- 09". Press the
Test
softki
verify the display shows
"Anal.
Front
End Test",
press the
Test
softkey again
initiate the test.
Monitor IC22 pin 1 and pin 8 with the oscilloscope. Press
Led,
when "LED C
rent
DAC IC20" appears press
Ramp.