Chapter 44-182) Open the front cover.3) Detach the right cover (lower).4) Detach the right cover (upper).5) Detach the left cover (rear).6) Open the copyboard cover (or ADF).7) Detach the small cover.8) Disconnect the ground cable of the ADF harness.9) Remove the ADF harness.10) Detach the reader rear cover.11) Remove the scanner motor.- Connector [2], 1 pcs.- Screw [3], 2 pcs.- Spring [4], 1 pcs.F-4-404.4.4 Contact sensor4.4.4.1 Removing the Contact Image Sensor (CIS) 0017-84951) Detach the rear cover.2) Open the front cover.3) Detach the right cover (lower).4) Detach the right cover (upper).5) Detach the left cover (rear).6) Open the copyboard cover (or ADF).7) Detach the small cover.8) Disconnect the ground cable of the ADF harness.9) Remove the ADF harness.10) Detach the reader rear cover.11) Open the copyboard cover (or ADF).12) Remove the copyboard glass.13) Pull the drive belt (front) [1] in the direction of the arrow to move thecontact sensor [2] to the position shown below.F-4-412) Remove the rear side of the contact sensor [1] from the carriage.3) Disconnect the flexible cable [2], and then remove the contact sensor [1].F-4-42F-4-434.4.4.2 Procedure after Replacing the CIS(Touch paneltype) 0017-8498After replacing the contact image sensor (CIS), go through the followingsteps to perform inter-channel output correction:1) Enter the service mode.Sequentially press the Additional functions key, 2 key, 8 key, and Additionalfunctions key on the operation panel.2) Press the arrow key on the touch panel to display "TEST MODE".3) Press [OK].4) Press the [2] key to display "SCAN TEST".5) Press the [1] key to display "SHADING".6) Press [OK].After completion of the above procedure, the contact sensor output is com-pensated and parameters are set automatically.After completion of automatic adjustment, "OK" is displayed.4.4.5 Copyboard Cover Open/Close Sensor4.4.5.1 Removing the Copyboard Cover Open/CloseSensor (Front/Rear) 0017-84991) Detach the rear cover.2) Open the front cover.3) Detach the right cover (lower).4) Detach the right cover (upper).5) Detach the left cover (rear).6) Open the copyboard cover (or ADF).7) Detach the small cover.8) Disconnect the ground cable of the ADF harness.9) Remove the ADF harness.10) Detach the reader rear cover.11) Disconnect the two connectors [1], and then remove the screw [2].12) Remove the reusable band [3], and then remove the harness [4] from thesensor mount.13) Remove the sensor mount [5].14) Remove the sensor from the sensor mount.F-4-444.4.6 Contact Sensor HP Sensor4.4.6.1 Removing the Contact Sensor HP Sensor 0017-85001) Open the copyboard cover (or ADF).2) Remove the copyboard glass [3].3) Remove the ADF reading glass.[2][1][3] [4] [3][2][1][1][2]When removing or installing the contact sensor unit, take care not to touchthe light guide and rod lens array.Light guideRod lens array[1][5][2][3][4]
