Welch Allyn SureTemp 986 Service Manual page 29

Symptom Possible Cause
Switched to Monitor mode
before probe in mouth
Probe: Wrong Missing one or more
type displayed configuration Jumpers
JP1-JP4
Battery Life Excessive alarms Excessive
Problems use in monitor mode
Dead cell
First Set Shelf Life
Monitor mode Probe or Instrument
temperature malfunction
reading too low
Improper placement of probe
Temperature not stable
Monitor mode Probe or Instrument
temperature malfunction
reading too high
Normal mode Instrument malfunction
temperature
reading too low
Improper placement of probe
Normal mode Probe or Instrument
temperature malfunction
reading too high
Improper technique
Improper technique
Model 986 Thermometer
Procedure
If probe is still cooling from a previous
temperature and used immediately, it might
sense ambient to be above 33.9
Check that the configuration Jumpers are
installed according to the Probe Type truth
table.
The horn draws significant current. During
monitor mode the instrument is continuously
drawing current.
If cell voltage is down significantly in only one
cell, this battery is defective. All batteries are
drained at the same rate by the instrument.
Due to possibly long stocking times between
fabrication and end use, the first set of
batteries may have reduced life.
Test calibration of thermometer with the M9600
Calibration Tester
Probe must be under the tongue and as far
back as possible into the sublingual pocket.
Allow three minutes for Monitor mode reading
to stabilize in mouth.
Test calibration of thermometer with the M9600
Calibration Tester.
Test calibration of thermometer with the M9600
Calibration Tester.
Probe must be under the tongue and as far
back as possible into the sublingual pocket.
Test calibration of thermometer with the M9600
Calibration Tester.
Movement in mouth after insertion and before
final temperature is displayed can cause high
readings. Place probe quickly into sublingual
pocket and hold still.
Do not place probe in mouth until display is
showing the body icon.
3. Troubleshooting
° °
C (93.0 F).
23