Datex-Ohmeda S/5 B-GAS, Technical Reference Manual

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Datex-Ohmeda S/5 Anesthesia Monitor
Document No. 800 1005-1
48
4.1.1 Supply voltage troubleshooting
Trouble Possible Cause Treatment
“Gas module removed”
No Gas module exists after turning the
monitor on. +5V lost Gas module CPU not running. Check Gas Interface
cable.
Check +5V from module mother board and timeout
value from module service page.
Random CO
2
value.
No CO
2
or AA response.
Abnormal AA mixture messages and AA
selections.
“Unknown Agent”
“Zero error” after zeroing
“Calibrate Agent ID”
“Sensor Inop”
+5 Vdirty lost Check the IR lamp resistance (approximately 4
Ohm)and the lamp voltage (module mother board
connectors X8 and X9)
X8 = ASX lamp(i-models)
X9 = ACX lamp
“Continuous Occlusion”
“Sensor Inop”
Random curve trace and gas digit
values(resembling noise).
Pressure and flow curves extremely low. +15 V lost Check voltage from module mother board X1 pin 4,
X2 pin 1a, X3 pin 1a, X4 pin 9 and X5 pin 5.
CO
2
value high.
“Air leak”
“Sensor Inop”
Paw and Flow curves extremely high.
-15 V lost Check voltage from module mother board X1 pin 2,
X2 pin 2a, X3 pin 2a, X4 pin 6 and X5 pin 6.
“Air Leak”-message remains on the screen. +15 V dirty lost Check voltage from module mother board X1 pin 3,
X2 pin30a , X3 pin 30a, X4 pin 1 and X5 pin 13.
Fan stopped. +32 V lost Check the fuse on Gas interface board.
Check the fan and regulated fan supply voltage from
module mother board connector X10.
“Calibrating gas sensor” remains on the
screen. One or more of the voltages lost:
+5 Vdirty, +15 V,-15 V, +15 Vdirty Check those voltages as above.
ACX measuring board not
communicating with the Gas
mother board. Check whether the ACX software version is available
in the service menu. If not, replace the ACX
measuring board.
ACX measuring unit badly
contaminated. Replace the ACX measuring unit.