Field Service Manual December 2003
Page 265 of 276
Film-Job Quality
Error : Bad slow scanline quality
Slow scanline does not have a good quality
► Is the carriage vibrating
‼ If yes. Try reducing the pressure of the airbearings.
► Optic. Loosing beams during exposure
‼ Modulator , cable:mod-drv4x3 , drv4x3
► Vibration on the granit during drumspinning ?
► Frequency & Delay correct ?
► Cleaning the RSF encoder can sometimes give a solution.
Error : White Lines. Two different kinds of white lines.
Missing data(drawing ໂ. Parts of the job are missing. Check circles or lines
plotted in an angle.
► Coax cables at drivers and modulator side are not fixed anymore
► Laser – laser power supply
► Grey lines- Check the beam amplitudes.
‼ Modulator , cable:mod-drv4x3 , drv4x3
► Voltage interrupts
‼ UPS installed
► Developer
► Convertion DPFto PRX
‼ Plotted on the wrong resolution.Try exposing on a metric and imperial
resolution.
► OVSP may not be too big
►Denisty is maybe just too low
‼ Increase laser intensity(parameter 91)
► Check voltages for circuitboards
► Carriage vibrations?
‼ If yes. Adjust carriage airpressure.
► All parts in optic fixed ?
Shifted data(drawing ແ. The complet job is plotted but data is shifted. Check
circles or lines plotted in an angle.
► Is the latest LTL installed ?
► Maccon
► RSF encoder
To Next Page
Loading...