Konica Minolta REGIUS 190, Руководство по обслуживанию

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4.3 Troubleshooting for Image Quality
REGIUS MODEL 190 Service Manual Ver.1.00 2004.11.01
4.3.5 Case 4: Horizontal lines throughout the entire image
5 Digital-type horizontal line or lines • Poor connection: Check the connection of the optical
unit's relay connector (JP37) and the photomultiplier
cable connectors (J1, J3).
• H-SYNC loss: Check H-SYNC using a signal and
replace the optical unit. "
2.6.5 Checking H-sync Signal,
p.80"
• In the case of any other digital-type problems (including
brightness variations), replace either the ADB2 or
SCB2 and con
fi rm the effectiveness of this action.
Refer to " 2.7.4 Replacement of ADB2 (A/D board),
p.86" , " 2.7.3 Replacement of SCB2 (System Control
Board), p.84" .
Phenomena Cause/Remedy
Phenomena Cause/Remedy
1
Horizontal lines with a 7-line interval. • This occurs due to polygon irregularity and should be
resolved through irregularity correction.
• If this does not resolve the problem, it is possible that the
optical unit's internal laser beam is being disturbed, and
the optical unit should be replaced. "
2.6.2 Replacement
of Optical Unit, p.76"
2 Irregular horizontal lines over the entire left
side. The laser's radiation intensity is varying and the optical unit
should be replaced. "
2.6.2 Replacement of Optical Unit,
p.76"
3 White lines extend from the center to the
right side. The laser's radiation intensity is varying and the optical unit
should be replaced. "
2.6.2 Replacement of Optical Unit,
p.76"
4 Horizontal streaks with 6 ~ 7mm interval. • Malfunction of the subscanning due to rust on the LM
guide.
• Lubricate the LM guide. " 3.1.2 Lubrication of the LM
Guide, p.94"
5
Horizontal streaks (20~60 streaks) with 4 ~
5mm interval throughout the image. • Noise originated by the high frequency therapy equip-
ment. Turn off the equipment or direct the antenna of the
equipment not against the REGIUS 190, and check
whether the streaks disappear.
• If the streaks disappear, widen the distance between the
equipment and the REGIUS 190 or direct the antenna of
the equipment not against the REGIUS 190.