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4.3 Troubleshooting for Image Quality
REGIUS MODEL 190 Service Manual Ver.1.00 2004.11.01
4.3.27 Case 26: Image fading
Phenomena Cause/Remedy
1 The x-ray exposure time is too long. (Organs
move over extended periods)
• Check the equipment's exposure time and the display S-
value. (An S-value of less than 50 is exceptionally low.)
• Confirm whether the photo timer is operating correctly.
2 Beam diameter abnormality • Carry out MTF chart measurement.
• If the value for 2 cycles/mm is 22% or less, replace the
optical unit. Refer to "2.6.2 Replacement of Optical Unit,
p.76".
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