MINOLTA-QMS PagePro 4100 Series, Service Manual

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2-6-2. 2nd Paper Cassette Unit (Option for 4100E, 4100GN),
3rd Paper Cassette Unit (Option for 4100E, 4100GN,
4110W, 4100W)
2-6-3. Duplex Unit (Option)
Symbol Name Function
PI2 Paper Empty Sensor
(on the PWB-A) Detects the presence of paper.
The signal is "low" when the paper is detected.
PWB-A Connecting Board Sends and receives power and control signals
from PWB-A in the printer to components in the
Second/Third Paper Cassette Units.
SL21
(SL31) Paper Take-up
Solenoid Controls gears and clutches to transmit the drive
from the Main Motor to Paper Take-up Rollers.
The drive is transmitted when the solenoid is
turned on.
SW21
(SW31) Cassette Detecting
Switch Triple push switches for detecting the cassette
type according to the paper size
Symbol Name Function
DUP_OPEN Duplex Cover
Sensor Checks the status of the cover and stops
operation of the Duplex Unit when the cover is
open.
DUP_PS1 Duplex Exit Sensor Detects that paper is discharged from the
Duplex Unit.
The signal is "low" when paper is detected.
DUP_PSR Duplex Entrance
Sensor Detects that paper is fed into the Duplex Unit.
The signal is "low" when paper is detected.
M41 Switchback Motor Reverses the rotation of the Paper Exit Roller
and feeds paper into the Duplex Unit.
M42 Paper Transfer
Motor Transports paper within the Duplex Unit.
PWB-A Duplex Unit Control
Board Sends and receives power and control signals
from PWB-A in the printer to components
in the Duplex Unit.
SL41 Skew Correction
Solenoid Controls gears and clutches for transmitting the
drive of the transfer motor to rollers. The drive
is transmitted when the solenoid is turned on.