Sharp AR-FN7 Service Manual page 45

10)Remove the four screws [14] to remove the upper transmission
sensor unit [15] and lower transmission sensor [16].
[14] [14]
Fig.F03-201-07
11) Remove the punch unit [18] from the horizontal registration motor
assembly [17].
[17]
Fig.F03-201-08
[15]
[16] [14]
[18]
AR-FN7/PN1 DISASSEMBLY AND ASSEMBLY 5-14
B. PCBs
(1)Removing the Punch Controller PCB
1) Remove the two screws [1].
2) Disconnect the five connectors [2] to remove the punch controller
PCB [3].
[2]
Fig.F03-202-01
(2)Removing the Photosensor PCB
1) Remove the punch motor. (See 2.A.(1).)
2) Remove the screw [1].
3) Remove the harness [3] from the harness guide [2] on the PCB, then
detach the PCB cover [4].
[1]
[4]
Fig.F03-202-02
4) Disconnect the connector [5] to remove the photosensor PCB [6].
Fig.F03-202-03
[3]
[2]
[2]
[1]
[3]
[2]
[6]
[5]