When the deck is slid into the machine, the deck open/closed sensor goes on and, at the same time, the pickup roller starts to move down. While all this goes on,

the light-blocking plate leaves the lifter sensor, causing the deck lifter motor to go on and the lifter to move up.

The lifter stops to move up when the lifter sensor detects the surface of paper. The left/right deck, further, is equipped with a limiter to make sure that the lifter stops

before it moves past the lifter sensor.

When the open button of the deck or the cassette is pushed, the drive gear of the lifter becomes disengaged, letting the lifter to move down under its own weight.

Cassette opening/closing

Detection

Lifter position detection

Paper detection

Paper level sensor

Lifter upper limiter

Drive motor

The following diagram shows the components of the deck:

8.6.2 Lifter Limiter (right/left deck) Control Circuit

iR5065 / iR 5055 / iR5075 / iR5075N / iR5065N / iR5055N

When the CPU on the DC controller PCB generates the motor drive signal, the lifter motor in response starts to rotate to move the lifter. When the deck reaches the

lifter sensor, the deck lifter detection signal arrives at the CPU, causing the CPU to stop the deck lifter drive motor.

The machine is equipped with a deck limit sensor to make sure that the lifter will not go awry. When the surface of paper reaches the deck limit sensor, the limit

signal arrives at the DC controller PCB to cut off the drive signal, thereby stopping the limit motor.

The following block diagram shows the control circuit:

Right deck

right deck

open/closed sensor (PS5)

Right deck lifter sensor(PS6)

right deck paper sensor (PS7)

right deck paper level upper sensor

(PS47)

right deck paper level lower sensor

(PS48)

right deck limit sensor (PS8)