2.1.4. Paper Handling Mechanisms
During the normal operation, paper is fed to the printer, advanced to the specified position, and ejected from
the printer. These paper-handling operations are performed by various paper handling mechanisms, such as
tractors,platens, rollers, and gears.This section describes the printer’s paper handlingmechanisms.
2.1.4.1. Release Lever
The release lever is used to select friction for rear /front tractor feed or to release the paper for pull tractor
feed. Changing the release lever position moves the paper guide rollers, and the new lever position isdete cted
by 2relea se switchsensors (RLSW1and RLSW2). See thefollowing table.
Table 2-3. Release Lever Position
Release Lever
Position Status of Paper Guide Rollers RL SW 1 RL SW 2
Friction mode The paper guiderollers are
pressed against the platen Open Open
Front push tractor
mode The paper guiderollers are
separated from the platen Closed Open
Rear push tractor
mode The paper guiderollers are
separated from the platen Closed Open
Pull tractor mode The paper guiderollers and the
rollers for the lower paperguide
are separated from each
position.
Closed Closed
Figure 2-4 Release Switch
Operating Principles FX-2170 ServiceManual
2-4 Rev.A