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(7) Image reading system: Uneven image
<Typical Faulty Image>
<Troubleshooting Procedure>
Step Check Result Action
1 Is the Scanner Motor drive being trans-
mitted?
NO Correct the drive coupling mech-
anisms.
Replace the Scanner Unit.
2 Is the harness of the Exposure Lamp
catching?
YES Correct it.
3 Is there enough slack in the Timing Belt? NO Correct it.
Replace the Timing Belt.
4 Are the Scanner Rails scratched or
dirty?
YES Clean them.
5 Are there any bent connector pins on the
cables connecting the control boards,
are any connectors incorrectly plugged
in, or are any cables broken?
YES Correctly plug in the connectors.
Replace the connection cables.
6 The problem has been eliminated after
performing step 5.
NO Replace the Scanner Unit.
4011T528AA