User`s guide

Page 23
68E3527 Rev. F
Troubleshooting
The table below provides a guide for troubleshooting some basic Tono-Pen
VET tonometer operational problems. If a problem persists after using this
guide contact Reichert technical services.
SYMPTOM PROBABLE CAUSE CORRECTION
“Lob” displayed on
LCD Screen
Low Tono-Pen VET OCU-CEL
Battery capacity
Replace Tono-Pen VET OCU-CEL
Batteries
Noticeable slowing
in the calibration
check process,
in activating
instrument
Low Tono-Pen VET OCU-CEL
Battery capacity
Replace Tono-Pen VET OCU-CEL
Batteries
Compressed air cleaning has
lowered the temperature of the
instrument
Allow Tono-Pen VET unit to warm to
room temperature
Multiple inaccurate
readings
Improper technique
Review “INSTRUCTIONS FOR USE”
Section of this manual
Old or improperly applied Ocu-Film
+ tip cover
Replace Ocu-Film
tip cover
Low Tono-Pen VET OCU-CEL
Battery capacity
Replace Tono-Pen VET OCU-CEL
Batteries
Need to check calibration Perform calibration check procedure.
Debris in tip Clean tip
Mechanical or electronic damage
Arrange for service through Reichert
Technical Service Group
No beeps and/or no
dashes upon
activation
Activation button not properly
pressed
Press Activation button
Activation switch not depressed
long enough
Depress activation switch longer
Low Tono-Pen VET OCU-CEL
Battery capacity
Replace Tono-Pen VET OCU-CEL
Batteries
Mechanical or electronic damage
Arrange for service through Reichert
Technical Service Group
Unable to obtain
“Good’ calibration
check
Debris in tip Clean tip
Compressed air cleaning has
lowered the temperature of the
instrument
Allow Tono-Pen VET tonometer unit to
warm to room temperature
Unit displays “CAL”
then single dashed
line then turns off.
Button pressed too quickly or too
slowly
Press the button twice, a little slower
or faster until the word CAL appears on
the screen and stays on the screen. If
the single row of dashed lines appears,
repeat the double press.