Riso RP-255, Техническое руководство

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AF SCANNING SECTION (RN20/21 Series)
[ 14 - 13 ]
7. Removing the Registration Roller, Original Read Roller, and Original
Ejection Roller
(1) Switch off the power and open the AF unit. Now remove the two screws (P tight, M3 x 10), and
remove the AF cover. Finally, close the AF unit.
(2) Detach connectors CN1 and CN3 on the AF-PCB, and remove the ground screw on the AF upper
guide ass’y together with the screw (double-washer, M3 x 6).
* Take care not to drop the rosette washer fitted beneath the ground screw.
(3) Remove the AF upper guide ass’y [A] and four screws (P tight, M3 x 10).
(4) Lift up the jam release dial [B] towards the top left to pull it out.
(5) Remove the idler spring [G], loosen the two screws on the idler [F], and then loosen the tension on
the timing belt [H].
(6) Remove the three screws (P tight, M3 x 10) from both the AF guide frame (front) [I] and AF guide
frame (rear) [J], and then remove the frames.
Removing the Registration Roller
(7) Remove the front E-ring [P], rear E-ring [M], washer [K], thrust spring [L], and washer [K]. Next, pull
out the timing gear [Q], which is protrudes onto the front flat face, and then remove the registration
roller [C].
* Take care, as the washer and thrust spring may fly out when the E-ring is removed.
Removing the Original Read Roller
(7) Remove the front clutch spring [O], E-ring [P], rear E-ring [M], washer [K], thrust spring [L], and
washer [K]. Next, pull out the timing gear [Q], which protrudes onto the front flat face, and then
remove the original read roller [D].
* Take care, as the washer and thrust spring may fly out when the E-ring is removed.
Removing the Original Ejection Roller
(7) Remove the front E-ring [P], rear E-ring [M], washer [K], thrust spring [L], and washer [K]. Next, pull
out the timing gear [Q], which protrudes onto the front flat face, and then remove the original
ejection roller (top) [E].
* Take care, as the washer and thrust spring may fly out when the E-ring is removed.
[Precautions on Reassembly]
• Each roller is equipped with a thrust spring on the rear side. Be sure to place the washers before and
after the thrust spring, and then install the E-ring to secure them in place.
• Note the insertion direction of the lugs on each timing gear.
• Attach the AF timing belt as shown in the photograph.
• Engage the three pins in each case when securing the AF guide frame (front) and AF guide frame
(rear). Also check that the bearing bushes are fitted correctly on each roller.