Troubleshooting Chart; Osd Troubleshooting Chart - Sunrise Medical DeVilbiss 505DZ Service Manual

OSD troubleshooting
A.
Visible Alarm
ON
Other Symptoms
1.
No OSD lights are
illuminated.
2.
Both OSD lights are
illuminated.
3.
Yellow Low Oxygen light is
illuminated.
4.
Yellow Low Oxygen light is
illuminated and an
intermittent audible alarm
sounds every five seconds.
*Refer to specifications for oxygen purity levels.
T R O U B L E S H O O T I N G
Symptom
Audible Alarm
ON
Possible Cause
1. Connector off between OSD and PC board.
2. Defective OSD.
1. Defective OSD.
1. Oxygen level is low*.
1. Oxygen level is low*.
Compressor
ON
Possible Remedy
1. Reconnect connector.
2. Replace OSD.
1. Replace OSD.
1. Check concentration with an oxygen analyzer. If the
concentration is within specification, replace the
OSD. If the concentration is low, refer to Numbers
A5 and A6 in the Unit Troubleshooting Chart.
1. Check concentration with an oxygen analyzer. If the
concentration is within specification, replace the
OSD. If the concentration is low, refer to Numbers
A5 and A6 in the Unit Troubleshooting Chart.
23
Power Light
ON