Removal And Assembly; Removing The Main Motor Unit - Riso RN SERIES Technical Manual

CHAPTER 3. MAIN DRIVE SECTION

REMOVING THE MAIN MOTOR UNIT

Removal and Assembly

1. Removing the Main Motor Unit
(1) Position the print drum at position A, turn off the power, and then remove the following covers and
components.
• Front door
• Front cover
• Rear cover
• Controller
• Main PCB
• Print positioning unit
(2) Reduce the tension on the Paper feed timing belt [A].
• Loosen the retaining screws on the Idler A ass'y [B].
(3) Reduce the tension on the Main belt [C].
• Loosen the retaining screws on the Idler B ass'y [D].
• Loosen the retaining screw [L] on the Idler C ass'y [E], and then remove the mounting screw [M].
* Do not remove the retaining screw [L] on the Idler C ass'y [E].
(4) Remove the Paper feed timing belt [A] and Main belt [C] from the Main pulley [F].
(5) Unplug one wire harness connector from slot No. CN403 of the Drive PCB, and another wire harness
connector at the rear of the machine, close to the Print positioning unit. Then remove the mounting
screws (M4 x 8: 6 pcs), and remove the Main motor unit [G].
E
F
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RN (Version 1.0)
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B
A
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G