Ricoh D124-17 Service Manual page 664

6. Troubleshooting
Possible causes:
• CIS defective
Case 8: Dark image density at CIS1, CIS3, and CIS5.
Possible cause:
• The machine is near a window and sunlight is hitting the CIS unit
• The light shield have been removed or is tucked inside the machine.
• This light shield prevents light from entering the scanner unit.
• If this gap is not covered by the shield, strong light could enter the back of the scanner unit
and cause image distortion during scanning.
• Make sure that the light shield has not been removed.
• Move the machine away from the window.
• Close the window blinds to block the sunlight.
• If closing the blinds or moving the machine is not possible (or if the light shield has been
removed or damaged), cover the top of the machine with one wide sheet of paper (at least
840 mm wide) to block the sunlight.
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