
Maintenance
3i Plus
Rev. A1 Jan 2015
53
9
Maintenance
Our sales and customer service representatives are always at your disposal for questions regarding
applications, calibration, repair, and solutions to specific problems. Please contact your local sales
representative if you need assistance. In many cases, problems can be solved over the telephone. If
you need to return equipment for servicing, calibration, or repair, please contact our Service
Department before shipping. Phone numbers are listed at the beginning of this document.
9.1
Troubleshooting
Symptom
Probable Cause
Solution
Erroneous Temperature
Wrong Emissivity
Correct Emissivity Setting
Wrong Background Temperature
Compensation
Correct Background Temperature
Compensation Setting
Wrong Transmittance
Correct Transmittance Setting
Inaccurate Field of view
Adjust Field of View via Laser Indication or
Scope Red Point
Obstructed Field of View
Remove Obstruction
Dirty Lens
Clean Lens
LCD Backlight Red and
Buzzer Sounds
Nose Too Hot
Move the instrument away from the hot
temperature source
Wrong High Temperature Alarm
Correct High Temperature Alarm Setting
Wrong Low Temperature Alarm
Correct Low Temperature Alarm Setting
Battery Symbol Blank
Insufficient Battery Level
Charge Battery
No Trigger/Button
Response
Unload Battery, Disconnected USB Cable
Reload Battery
Trigger/Button Damage
Contact After-Sale Service
No LCD Display
Battery Level is too low
Charge Battery
Invalid Battery
Change to a new Battery
LCD damage
Contact Service
No LCD Backlight
LCD damage
Contact Service
No Scope Red-point
Scope damage
Contact Service
No Laser
Ambient Temperature exceeds Operation
Temperature range
Use it in the operation temperature range
Laser damage
Contact Service
Unable to Charge Battery
Via Cable
Wrong Cable
Use the special USB charge cable
Battery/Cable damage
Change to a new Battery/Cable
USB interface
Contact Service
Unable to communicate
with PC Via Cable
Wrong Cable
Use the special USB cable
Wrong PC software
Reinstall the latest PC software
USB interface damage
Contact Service
Unable to Communicate
with iPhone Via Bluetooth
Wrong iPhone software
Reinstall the latest iPhone App
Bluetooth damage
Contact Service
Table 5: Troubleshooting
1.888.475.5235