Service Manual Rayjet
Replacing the laser tube
4 Replacing the laser tube
The laser tube is one of the main components of any laser engraver. The Rayjet uses Synrad
tubes for all systems.
To make the tube fire it must be
- Connected to the power supply
- Provided with a control signal of the data cable (BNC connector)
The control signal is a 5V TTL signal that comes from the main board.
All tubes have an integrated overtemperature protection. If the tube exceeds a certain temperature
it is switched off to prevent a damage of the gas/electronics.
The following reasons might make it necessary to replace the tube:
• Too low laser power
• Fluctuations of laser power (typically jumps from 100% to 50% engraving depth)
The frequency of these power fluctuations is low (e.g. every 5 minutes)
• Uncontrollable timing behaviour (high frequency effect).
This effect shows shifted start/end points of the pulses so that the image looks frayed
although the mechanics (of the motion system) and software adjustment are OK.
When you receive a new lasertube for the Rayjet, the tube is mounted on a plate and already
adjusted in a way, that it should not be necessary to adjust the beampath. If there are some
missalignments, do the alignment as described before in chapter
3.
Please consult the Rayjet Video DVD to find detailed instruction on how to exchange the laser
tube.
07/09/2010 Trotec Produktions- und Vertriebs GmbH_Linzer Strasse 156, A-4600 Wels, Austria, Technical Support 17 / 53
tel_+43 (0)7242 239-7000, fax_+43 (0)7242 239-7380, mailto: rayjet@troteclaser.com www.rayjetlaser.com
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