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34 Troubleshooting and repair Welch Allyn VSM 300 Series
Repeated C07 error code. Incompatible SpO
2
sensor.
Improperlyconnected SpO
2
sensor.
Faulty SpO
2
sensor.
Faulty SpO
2
board.
Use a compatible sensor.
Properly connect the sensor cable.
Replace the sensor.
Replace the SpO
2
board.
Repeated C20 temperature
error code.
Probe well is not installed in the
probe-well housing.
Faulty probe.
Faulty temperature board.
Install the probe well in the probe-well housing.
Replace the probe.
Replace the temperature board. For details, see
order number21327-1000 in“Temperature option”
on page 92.
Error code E30 PROM is corrupt. Returnthe monitor to an authorized service center
for PROM programming.
Error code E31 RAM test failure. Cycle the power. If the error persists, return the
monitor to an authorized service center for
replacement of the main board.
Error code E32 Factory data failure. Return the monitor to an authorized service center
for replacement of the main board.
Error code E33 User data error. Cyclethe powertoreset allusersettings todefault
values.
Error code E34 A/D converter failure. Cycle the power. If the error persists, return the
monitor to an authorized service center for
replacement of the main board.
Error code E35 SpO
2
module failure. Verify all cable connections, and then cycle the
power. If the error persists, replace the SpO
2
board.Use theservice utilityto verifycompatibility.
Error code E36 Faulty probe. Replace the temperature probe with a known
good probe.
Temperature module failure. Verify all cable connections, and then cycle the
power. If the error persists, replace the
temperature board, Use the service utility to verify
compatibility.
Error code E37 Printer failure. Verify all cable connections, and then cycle the
power. If the error persists, replace the printer
module. Verifythat the paper guideand sensor are
properly attached to the printer chassis.
Error code E38 Error E38 always occurs when the
monitor is first powered after a
battery has been connected.
Real-time clock failure.
Cycle the power, and then reset the date and time.
Cycle the power. If the error persists, return the
monitor to an authorized service center for
replacement of the main board.
Error code E40 NIBP module failure. Characterize NIBP. (See “NIBP
characterization” on page 36.) If the error
persists, return the monitor to Welch Allyn for
service/
Error code E41 NIBP module failure. Verify all cable connections, and then cycle the
power. If the error persists, replace the NIBP
module.
Warning: Always characterize NIBP after
replacing any NIBP component. (See “NIBP
characterization” on page 36.)
Error code E44 POST queue full. Cycle the power. If the error persists, return the
monitor to an authorized service center for
replacement of the main board.
Symptom Possible cause Suggested action