Troubleshooting; Repair And Maintenance - VWR TL824 BF Manuel D'instructions

Troubleshooting

Review the information in the table below to troubleshoot operating problems.
PROBLEM
LIGHT DOESN'T TURN ON
IMAGE CANNOT BE SEEN OR
IS DARK
IMAGE IS UNCLEAR, BLURRED
OR HAS INSUFFICIENT
CONTRAST

Repair and maintenance

Microscopy environment
This microscope is recommended for use in a clean, dry and shock free environment with a temperature of
0-40°C and a maximum relative humidity of 85 % (non condensing). Use a dehumidifier if needed.
After using the microscope
The microscope should always be kept vertical when moving it so that no moving parts, such as the
eyepieces, fall out.
Never mishandle or impose unnecessary force on the microscope.
Never attempt to service the microscope yourself.
After use, turn down the illumination intensity control and turn the light off. Cover the microscope with included
the dust cover, and keep it in a dry and clean place.
Electrical safety precautions
Before plugging in the power supply, make sure that the supplying voltage of your region matches with the
operation voltage of the equipment and that the lamp switch is in off-position.
Users should observe all safety regulations of the region. The equipment has acquired the CE safety label.
However, users do have full responsibility to use this equipment safely.
TL824: the high-efficiency white LED source in TL824 is designed to last many years without any per-
formance decrease. Never try to replace it with another kind of LED source.
CAUSE
Power supply not connected Check that the power supply jack is
Connected
The iris diaphragm aperture
is not completely opened
Brightness level is low
Objective is not aligned with
the optical axis
Objectives or filters are dirty
The iris diaphragm aperture
is not opened correctly
Condenser at wrong height
9
SOLUTION
well inserted on the rear of the
microscope
Rotate the brightness adjustment
control and check if there is an
increase in the light output
Completely open the iris diaphragm
aperture
Rotate the brightness adjustment
potentiometer
Rotate the nosepiece until an objective
is well inserted in the optical path (it
"clicks")
Wipe them clean
Open the iris diaphragm aperture
completely
Hold the condenser and rotate it until
you see a uniform illumination