Troubleshooting And Repair; Troubleshooting Chart - Welch Allyn 53 Service Manual

4 - Troubleshooting and Repair

Troubleshooting Chart

This troubleshooting chart includes error codes related to possible internal failures. If other
error codes appear, refer to the Directions for Use for information on the cause and suggested
remedy for those errors.
Caution Replace parts, components, or accessories only with parts supplied
or approved by Welch Allyn. The use of any other parts can lead to inferior
monitor performance and will void the product warranty.
Symptom
Monitor does not power up. Power adapter not powered.
Battery run time is low.
NIBP air leak exceeds
specified limits.
Repeated C03 error code.
Repeated C04 error code.
Repeated C07 error code.
Repeated C20 temperature
error code.
Error code E30
Vital Signs Monitor Series 300
Possible Cause
Defective power adapter.
Battery is fully discharged.
Battery fuse open.
Defective battery
Leaky check valve.
NIBP internal tubing is
kinked.
NIBP internal tubing is
disconnected.
Faulty NIBP module.
Incompatible SpO sensor.
2
Faulty SpO sensor.
2
Improperly connected SpO
sensor.
Faulty SpO board.
2
Probe well is not installed in
the probe-well housing.
Faulty probe.
Faulty temperature board.
PROM is corrupt.
37
Suggested Action
Verify that the power adapter is plugged
into the AC source and the monitor.
Replace the power adapter.
Run the battery verification test; replace
the battery if necessary.
Replace the battery.
Replace the battery.
Replace the check valve.
Route tubing properly through the
monitor.
Properly connect the NIBP tubing.
Replace the NIBP module.
Warning: Always characterize NIBP
after replacing any NIBP component.
(See page 39.)
Use a compatible sensor.
Replace the sensor.
Properly connect the sensor cable.
2
Replace the SpO board.
2
Install the probe well in the probe-well
housing.
Replace the probe.
Replace the temperature board.
Return the monitor to an authorized
service center for PROM programming.
Service Manual