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Warning: Disconnect the light from the power supply before attempting any of the
electrical checks mentioned below.
Problem
Light will not turn on
1. Power to unit is off (not plugged in).
or stay on
2. Fuse is blown.
3. Bulb has failed.
4. Bulb is damaged or burned out.
5. Bulb is not seated in socket
6. Incorrect bulb installed.
7. Exposed wires are cut or damage.
8. Wire not connected correctly during
9. Wire connections made during
10. No input power to light unit.
11. Disconnected wires at switch or
12. Socket is damaged or faulty.
13. No power output from transformer
VistOR SP Model Only
14. Disconnected wires at lamp holder.
15. Bulb switch onside of light is in "Off"
Bulb burns out
1. Incorrect bulb installed in light head.
quickly**
2. Supply voltage does not correspond
3. Transformer failure.
4. The light head is mounted on the
Light does not
1. Spring tension is incorrect.
maintain its position
2. Additional equipment was added to
vertically
Light head will not
1. Light head is against internal stop.
rotate at yoke
interface
Arm cannot be
1. Arm is against internal stop.
moved any lower
Arm cannot be
1. Arm is against internal stop.
raised any higher
Arm stopped moving
1. Arm is against internal stop.
horizontally
Caster/casters
1. Floor base has been damaged.
cannot be reinstalled
5368 KUHL ROAD ● ERIE, PENNSYLVANIA 16510 ● PHONE 814-899-4220 ● FAX 814-899-1410
Section 7: Troubleshooting
General Troubleshooting
Cause
correctly.
installation.
installation have disconnected.
transformer.
when input power to transformer is
measured.
position (Fiber Optic models).
to ratings label.
wrong arm.
unit.
A member of the Medical Illumination International Group
Remedy
1. Turn on power (plug in unit).
2. Replace fuse (check for correct fuse).
3. Replace bulb (check for correct bulb).
4. Replace bulb (check for correct bulb).
5. Insure that bulb is fully seated in socket
6. Install correct bulb.
7. Replace wire assembly.
8. Check all wiring connections.
9. Reconnect wires per the instructions.
10. Check power input connections and circuit
breakers.
11. Reconnect wires.
12. Replace socket/lamp power.
13. Replace transformer.
14. Reconnect wires.
15. Turn switch to "On" position.
1. Install correct bulb.
2. Check supply circuit to which light was
installed to verify correct voltage.
3. Replace faulty transformer.
4. Remount the light head on the correct arm.
1. Adjust spring (see arm adjustment page 66).
2. Remove additional equipment from arm.
1. Rotate head in opposite direction.
1. Rotate arm in opposite direction.
1. Rotate arm in opposite direction.
1. Rotate arm in opposite direction.
1. Contact Customer Service or Field
Representative.
Section 7
P
age 67 of 85
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