
Titan 400 Xenon Illuminator Service Manual
LIT0129Sunoptics Surgical® Rev. A
(English) Page 4 of 8
GENERAL THEORY OF OPERATION
The Titan 400 illuminator general operation is as follows. Please consult Fig. 1
for wiring information.
A.C. POWER DISTRIBUTION
The Titan 400 Xenon Illuminators are based around a universal input power
supply. Input line voltages of 100-120V ˜ and 220-240V ˜ at 50/60 Hz are applied
at the Power Input Model via a Hospital grade power cord. The input power is
then filtered by a low leakage current EMI Filter. Over-current protection is
provided by two 6 Amp circuit breakers. A single-pole interlock switch provides
operator safety, which is located on the front side of the door.
DC POWER DISTRIBUTION
DC power for the other system components is generated by the lamp power
supply. In addition to the 15 volts DC lamp power, it generates +12 VDC. The 12
VDC is used to power cooling fan and the elapsed lamp hour meter.
INTENSITY CONTROL
A rotating stainless steel disc that is placed in front of the lamp controls intensity.
The disc contains holes in varying sizes and patterns. Manual lamp intensity
control is made via a front panel mounted knob.
LAMP POWER AND IGNITION SYSTEM
The lamp used in the Titan Xenon Illuminators is a 400 watt ceramic arc lamp.
For ignition of the lamp to occur, it takes a high voltage pulse of approximately 23
KV. The power supply generates a pulse of approximately 400-600 volts, which
is then stepped up to the 23 KV pulse by the igniter module circuitry. Connection
to the lamp is made via two banana jacks.
The lamp power and ignition system consists of the lamp power supply, lamp
base assembly, and the lamp cartridge assembly. In the event you have a power
supply failure, it is recommended that the power supply be returned to
SUNOPTICS TECHNOLOGIES®for servicing. When power supply is switched
on, the DC supplies come up to voltage immediately. The lamp power supply
has a built in delay of 1 to 2 seconds before it will attempt to start the lamp. If the
lamp is unsuccessful at igniting, the power supply will try 6 to 10 times in rapid
succession before ceasing. After successful ignition, the supply switches to a 15
VDC output at approximately 27 amps of current.