Datex-Ohmeda CAPNOMAC ULTIMA, Service Manual

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CAPNOMAC ULTIMA
TM
SERVICE MANUAL
6-7a
Erroneous pressure value corrupts pressure compensation of all gas
values.
21. Continuous air leak
Like item 6, if the message persists, check the sampling system and
fix the leak.
25. ACX internal RAM error
26. ACX ROM checksum error
27. ACX external RAM error
Items 25 to 27. Change the component. See the items 9, 10, and 11
above for references.
28. Error in meas. board EEPROM
29. Error in preamplifier board EEPROM
Items 28 and 29. Change the meas. board or the ACX bench.
30. ACX AGC error
AGC gain control error for each gas in ACX measuring board.
Possible reasons for this message are: 1. contaminated bench 2. gas
concentration higher than room air level during initialization 3. lamp
voltage too low
31. ACX ADC error
Can appear occasionally with the item 17 “ACX sampling system
error” and it’s OK. If appears WITHOUT the item 17, it means HW
malfunction. Caused by too long AD conversion time. Check ACX
measuring board ADC section.
32. ACX DAC error
Reference voltage adjustment error for CO2 and AA.
36. ASX TEMP OUT OF RANGE
ASX is beyond the temp specification range (5 to 60 degrees
centigrade). ASX may be too cold. Warm it and try again.
Temperature sensor may be faulty.
41. ASX AGC VOLT CLAMP ERROR
Automatic gain control failed. Signal out of range. If this message
appears only after power-on and not continuously, the situation does
not require any action.
42. ASX MOTOR LAPTIME ERROR
Motor speed has fluctuated. Just as item 41.
43. ASX EEPROM OUT OF LIMITS
EEPROM contents are false. If appears often, change the ASX unit.
44. ASX EEPROM WRITE ERROR
Write to EEPROM not succeeded. If appears often, change the ASX
unit.
September lst, 1992/2