9
Cleaning and replacing the protective glass of the LCD glare protection filter (Shutter):
Never dismount / detach, the LCD glare protection filter (Shutter)!
Clean only the surface. Use a soft cotton cloth dampened with window cleaning fluid.
Next, dry the lens also using a soft cotton cloth.
If the protective glass (7) needs to be replaced, slide the old glass forwards out of its
retaining fixture, and replace the glass in the same manner.
6-2 MAINTENANCE OF THE ELECTRICAL COMPONENTS
Warning! Danger of glare, never look directly into the LED light or its reflections!
Caution! Only operate the LED light when the LED module is mounted in the
supporting arm of the hand-piece.
Changing the LED light module:
Switch the PUK off and remove the power cable of the mezzo from the PUK.
Loosen the retaining screws that hold the LED module, and remove the module.
Only use replacement LED modules from Lampert Company.
Mount the new LED module in the supporting arm of the hand-piece. Remember that the
module should fit flush with the underside of the supporting arm.
7
TROUBLE SHOOTING
PROBLEM
CAUSE
SOLUTION
7-1 PROBLEMS WITH ELECTRICAL COMPONENTS
A The LED light doesn’t
work
Cable is not attached
Switch on the cord switch Insert
the mains cable (16) into the
connection socket marked “LED-
Lamp 800 mA”, on the back of
the welding device
LED defective
Change the LED module
(Chapter 6-2)
B Shutter doesn’t switch
to its dark setting
Connecting cable from
Mezzo, is not attached to
the PUK (plugged it to
the wall socket)
Attach the connecting cable for
the Shutter (17) to the back of the
welding device
Shutter defective
Exchange the shutter
7-2 IMAGE QUALITY
D Poor resolution.
Eye-pieces soiled
Clean eye-pieces
E Marks or dirt in the field
of vision
Eye-pieces soiled
Clean eye-pieces
Protective glass soiled
Clean or change protective glass
* Note: Marks in the field of vision can also be caused by
dust or dirt on the inside of the eye-pieces. We therefore
recommend to always have the lenses cleaned by an
authorised service technician
7-3 PROBLEMS WITH MECHANICAL COMPONENTS
F Focus doesn't remain in
the position it has been
set to
The microscope head (8)
slides down
Adjust the tension of the
rotary knob
“
focus
”
(10)
