Sunnex CS2050D-MRI (Dual Ceiling) - Manual (Page 34)

Sunnex Celestial Star MRI Service & Installation Manual
34
10. TROUBLESHOOTING
Please refer to the following table for troubleshooting.
CAUTION! DISCONNECT THE LIGHT FROM THE POWER SUPPLY BEFORE
ATTEMPTING ANY OF THE ELECTRICAL CHECKS MENTIONED BELOW.
PROBLEM POSSIBLE CAUSE SOLUTION
No light from light head Light head is on OFF position Turn on the ON/OFF switch to ON
position
No light from light head, when
ON/OFF switch is ON Bulb has not been installed or it
has burned out Refer to bulb replacement
procedure in the manual
Fuse is blown Inspect / replace the fuse
following the fuse replacement
procedure
No power to the transformer box Check for facility power to the
transformer box
Transformer box is malfunctioning Check for 14 V DC output at the
transformer box output socket
when it is under load. If different
voltage, contact Sunnex customer
service. There are no user
serviceable parts in transformer
box.
Incorrect bulb installed Install correct bulb
Bulb burns out quickly Incorrect bulb installed in the light
head Install correct bulb
Light output is irregular in its
shape or intensity Incorrect bulb installed in the light
head Install correct bulb
Bulb/reflector is not seated in its
holder correctly Adjust the bulb/reflector so it
seats in the holder properly.
No light from light head even
when the bulb and fuse are in
good condition, light head flashes
intermittently when light head or
arms are moved Circuit or wiring problem within
transformer box, arm assemblies
or other part of lighting system Check wiring connections on arm
assemblies. If problem cannot be
repaired, call Sunnex Customer
Service
Extension arm does not rotate
freely or drifts (Ceiling) Improper installation of the ceiling
bracket Check for excessive flexing of
ceiling support structure and
check if ceiling plate is level.
Readjust if necessary.
Balance arm does not rotate
freely or drifts when released in
desired position The nut joining the balance arm
and the extension arm is lose Tighten this nut slightly
Light head does not rotate freely
at lamp head/yoke joint The screw/nut joining lamp head
with the yoke is too tight or too
lose Tighten/loosen as appropriate
until free movement of lamp head
is achieved