R o b o s c a n Pr o 1 2 2 0 - o p e ra t o r ’ s m a n u a l
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If the dampers are set to a position that is too tight you will find that it will affect the smoothness of
the mirror movement at the lower movement speeds.
R e g e n e r a t i n g M a l f u n c t i o n i n g L a m p s
Discharge lamps, like the HMI 1200 and MSR 1200, may refuse to strike if the mains voltage
applied to the fixture is too low. Instead, the lamp will burn with a faint blue arc and after a period
of time the lamp will become black on the inside. When this happens the lamp will refuse to start at
normal voltage. However, in this situation it is possible to regenerate the lamp and so continue its
expected life. To do this you should follow the instructions below:
W A R N I N G !
Before attempting any of the following you must ensure that the fixture is dis-
connected from the mains supply.
1.
Locate the Philips screw that secures the small cover over the voltage and frequency termi-
nals on the front end.
2.
Locate the Brown wire labelled 'V'. If this wire is connected to the 120V terminal then move it
to the 100V terminal. If the Brown wire is connected to the 230V or the 250V terminal then
move it to the 210V terminal.
3.
Switch on power to the fixture. If the lamp starts let it burn at this voltage for approximately 5
minutes and then switch off again.
4.
The lamp should now be clear on the inside and ready to re-use at the normal voltage. Discon-
nect the fixture from the mains and re-connect the Brown wire to the correct terminal as it was
before.
5.
Secure the cover over the voltage terminals before operating the fixture as normal.
If the lamp refuses to start after this procedure of if you prefer not to undertake it yourself, please
contact your local Martin Dealer and he will regenerate the lamp in a special fixture for you.