Adjustment; Upper Limit Sensor Position Adjustment - Riso RN SERIES Technical Manual

CHAPTER 4. FIRST PAPER FEED SECTION

UPPER LIMIT SENSOR POSITION ADJUSTMENT

Adjustment

1. Upper Limit Sensor Position Adjustment
Procedure
(1) Remove the paper on the paper feed tray.
(2) Start test mode No. 453 (elevator servo) and raise the paper feed tray and bringing it to a
complete stop.
(3) Once it is stopped, check that the gap between the Pickup roller [C] and the Paper feed tray [E] is
1.0 mm ±0.3 mm.
(4) If the gap is not within the specifications, detach the master removal box and remove the Master-
removal lower cover.
(5) Loosen the mounting screw [B] on the Upper limit sensor bracket [A], and adjust by sliding the
upper limit sensor up or down.
Symptoms
If the upper limit sensor is positioned too high, the paper-feed pressure is increased and multiple sheet
feeding is more likely to arise.
Conversely, if it is positioned too low, the paper-feed pressure is reduced and non-feeding is more likely
to arise.
A
A: Upper limit sensor bracket
B: Upper limit sensor bracket mounting screw
C: Pickup roller
D: Scraper roller
E: Paper feed tray
B
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RN (Version 1.0)
C D
E