Replacing The Lamp; Maintenance; Troubleshooting - SCHOTT KL 2500 LCD Gebrauchsanweisung

3 Replacing the lamp

Please ensure that the lamp and lamp-
holder have cooled down before
replacement. The corresponding
warning symbol is attached to remind
you.
First of all switch off the light source.
Open the lamp compartment (10) by
pressing the button (11) and pull it out
as far as the stop.
Press down the two levers of the speci-
al socket and pull out the faulty lamp.
The two levers must be pressed down
again while inserting the new lamp.
Push the lamp compartment in until
it latches (audible locking sound).
Switch the light source on.

4 Maintenance

Your KL 2500 LCD is maintenance-free.
To clean the outside of the instrument,
use a soft dry cloth or commercially
available plastic cleaning cloths.
Contact with cleaning solvents and
desinfectants as well as oils and oil/air
mixtures can induce tension cracks in
the light source body. Therefore direct
contact with these substances must be
absolutley avoided.
Fault Possible causes
Instrument not switched on.
Lamp out,
fan not running,
Plug not in socket.
no LCD display
No mains electricity voltage.
Lamp compartment not closed.
Fuse faulty.
Transformer overheated.
Remote control or
inclination angle switch faulty.
Lamp out, Lamp defective.
fan running,
fault status indication
No lamp.
„Err 1"
Lamp out, Insufficient cooling.
fan running,
fault status indication
„Err 2"
Lamp out, Transient current increase
fan running, in lamp circuit.
fault status indication
Lamp causing short-circuit.
„Err 3"
If you are unable to rectify the fault by the actions mentioned above, please contact
your specialist dealer or the nearest SCHOTT agency. More extensive repairs must
be carried out by the authorised customer service depot.

5 Troubleshooting

The display has a fault status indicator
(19). Any possible breakdowns can be
recognized quickly and easily.
„Err 1": Lamp circuit interrupted.
„Err 2": Temperature monitor has
triggered.
„Err 3": Short-circuit in the lamp
circuit, electronic fuse has
triggered.
Remedial action
Switch instrument on.
Plug the plug in.
Check mains voltage.
Close lamp compartment.
Replace fuse (16).
Ensure adequate cooling, check
that lamp type is correct, re-start
instrument after cooling down for
a prolonged time.
With instrument switched
off, disconnect accessories
Replace lamp (see point 3
of these instructions).
With light source switched
off, install lamp.
Ensure ventilation apertures are
free, avoid excessive ambient
temperatures, the instrument will
switch back on again after a
short time.
Switch instrument off and, after
a few seconds, back on again.
Replace lamp (see point 3
of these instructions).
GB
18