2-14 Service Manual
4036-307, -308
Display panel remains blank
Frequent paper jam, double feed, or skew
Image does not appear
Step Action and Question Yes No
1 Check the display cable.
1. See “Control panel assembly removal” on page 4-
24 to locate the display cable.
2. Disconnect and reconnect the display cable
connection (A).
3. Reassemble the scanner and power it on.
Is the display panel still blank?
Go to step 2 Done
2
Replace the display panel assembly.
Is the display panel still blank?
Replace the
keypad board
Done
Step Action and Question Yes No
1 Is the paper correctly set in the tray? Go to step 2 Properly position paper in
document feeder
2
Is the specified paper used? Go to step 3 Use correct feeder
3
Is the pick pad damaged? Replace pick pad Go to step 4
4
Is the pick roller damaged or worn? Replace paper feed
assembly
Replace pick roller assembly
Step Action and Question Yes No
1 Are you placing the original on the
flatbed?
Go to step 2 Go to step 3
2
Is the flatbed CCD cable connected? Replace the scanner control
board
Connect cable
3
Is the ADF cover open? Close the cover Go to step 4
4
Is the ADF/CCD data cable connected? Replace the ADF optical unit Connect cable and
tighten screws
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