Page 164 (Model J)
6. Symptom: Touch screen buttons do not operate.
Possible Cause
Touch screen cable disconnected.
Touch screen failure.
Remedy
Examine touch screen cable.
Replace touch screen. (See “N6631/02 LCD & N6631/05 Touch Screen” on page 43).
7. Symptom: Total power fail alarm active (Audible Only) after turning
off the ventilator.
Possible Cause
Battery disconnect button not fully depressed on power down.
Remedy
Depress button fully to cancel alarm.
8. Symptom: Mains power fail alarm active even though connected to
mains. Alarm Message: Main Power Fail.
Possible Cause
Mains power has failed.
Power supply has developed a fault.
Remedy
Restore mains power.
If mains is connected, power supply faulty. Replace power supply (See “M0910 Power
Supply Unit” on page 39).
9. Symptom: Monitor failure alarm. Alarm Message: Monitor Fail.
Possible Cause
A hardware fault has developed within the control/monitor board or the ribbon
cables between the control/monitor board and the CAN card.
Remedy
Check the ribbon cables.
Replace the control/monitor board. (See “A0763/02/M Control & Monitor Board” on page
38).
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