Checkline MVC-4000 - Manual (Page 5)

8
6.0 F LASHLAMP R EPLACEMENT
1. Disconnect power from unit.
2. Wait one minute to allow the lamp to cool and energy to capacitor to discharge.
3. Raise the cover.
4. Ground the rear lamp e1ectrode holder using a screwdriver.
5. Loosen both socket head screws on lamp supporting bracket.
6. Remove lamp cathode ground screw.
7. Gently grasp the cathode ground wire and remove lamp.
8. To install a new lamp reverse the removal procedure,
9. The lamp is in the correct axial alignment when the rear electrode butts
the back of the electrode holder.
Install a new lamp by reversing the removal procedure. Reconnect the anode
wire to the trigger circuit. Secure the ground wire to the PC board.
WARNING
DANGER – The Xenon Flash lamp is a high-pressure, gas-filled
device. Wear Safety glasses during handling
DANGER – HIGH VOLTAGE. Disconnect power cable and
control cable before replacing Flashlamp.
CAUTION – During installation, do not apply torque to the lamp
end seals.
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3.0 I NTERNAL O PERATIONS
3.1 Controls
In the AS4000 Series, a cover interlock
switch automatically breaks the circuit
whenever the unit is opened. this is to
help protect the operator from danger
of electric shock. To operate the unit
while the cover is open, pull up on the
interlock tab.
A test/run switch is provided for testing
the unit in the absence of input signals.
when the switch is th the TEST position,
the unit is on and the lamp flashes at
a fixed rate of 20 pps. For remote
operation, the switch must be placed
in the RUN position.
Light output intensity can be varied over
a range of approximately 10:1 by means
of an output control. A two-position slide
switch is used to select either internal
mode of control or external reference
control from the input connector.
Light output can be varied by means of
the output control knob.
3.2 Internal Test & Operation
Check the AS4000 Series Strobe for proper operation using the following
procedures (refer to figure above):
1. Disconnect power from unit
2. Lift the lid opening the enclosure
3. Visually inspect the flashlamp for damage
4. Place the TEST/RUN Switch in the TEST position
5. Reconnect power to the unit
6. Place the EXT/INT Reference Switch in the INT REF position
7. Lift the cover interlock switch to its up position
WARNING
Avoid looking directly at the high intensity light flash, either at the
unit itself or at the end of the fiber-optic cable. This could result in
damage to the eyes.
DANGER – HIGH VOLTAGE. Use extreme caution when
operating the interlock switch, avoid contact with the front
electrode of the flashlamp