GRAPHTEC CS510 SERIES Service Manual page 104

Cause
The scanned drawing
has undesired black
lines.
The scanned drawing
has undesired white
lines.
Part of the scanned
drawing is missing
(the scanned drawing
is horizontally
compressed).
Part of the
scanned drawing is
overlapped.
The image quality is
poor.
The PC does not
detect the scanner.
When placed on the
scanner, the paper
is moved beyond the
scanning section and
drops to the back of
the scanner.
Paper jam occurs.
CS510/IS210-UM-251-9370
Checkpoint
Clean the scanning glass and replace if
necessary.
Confirm that calibration (white correction)
has been properly performed.
Check the document hold-down plate for
stains.
Check whether the problem persists after
cleaning and adjustments.
Check the scanning glass for dust and
damage.
Confirm that calibration (white correction)
has been properly performed.
Confirm that the sensor X overlaps and Y
offsets are appropriate.
Confirm that the sensor X overlaps and Y
offsets are appropriate.
Check whether the scanning glass is dirty.
Confirm that the image resolution is
appropriate.
Confirm that the scanner has been turned
on.
Confirm that the PC has detected the USB or
ethernet properly.
Check the cable for broken wires, shorting,
and bent connector pins.
Confirm that the power supply for the
scanner unit functions properly.
Use a PC that correctly detects other
scanners to determine whether the problem
is with the PC itself.
The paper sensor does not function properly. Clean the paper sensor.
Check the transfer section for foreign objects. Remove foreign objects.
Remedy
Clean the scanning glass and replace if
necessary.
Clean the image sensors.
Perform calibration from the beginning (white
correction).
Clean the document hold-down plate.
Replace the image sensors.
Clean the scanning glass and replace if
necessary.
Perform calibration from the beginning (white
correction).
Align the sensor joints.
Align the sensor joints.
Use purified water or alcohol to clean the
scanning glass. (Do not use chemical
solvents.)
Select an appropriate resolution.
Turn on the scanner.
Reattach the USB or ethernet, set it up, and
reinstall the USB or ethernet driver.
Replace the cable.
Check the supply voltage and replace the
power supply as necessary.
Replace the data controller board.
(Reinstall the boot program.)
Check the sensor cable for contact with other
cables.
Replace the paper sensor.
11-2
11. TROUBLESHOOTING