Service manual

Chapter 7
7-8
starts rotating.
4) When the pickup roller rotates once, the toothless portion of the pickup roller drive gear comes to the position of the relay gear and consequently drive power of
the main motor is not transferred, stopping the rotation of pickup and feed rollers.
5) The picked up paper is fed to the registration roller through the vertical path roller.
F-7-13
7.3.3 Cassette Paper Size Detection
0011-0289
iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
The size of the paper in the cassette is detected by the DC controller PCB when the user changes the position of the cassette paper size lever. When the cassette is
inserted in the iR host machine, the paper size lever pushes the paper size switches provided in the iR host machine to allow the DC controller PCB to detect presence
of the cassette and the size of paper. Paper size switches are arranged as shown below. Paper sizes are determined by the combinations of the switches pushed by
the paper size lever.
F-7-14
T-7-8
ON:The push switch is pushed.
OFF:The push switch is not pushed.
*:Not used.
A3 A4 A4R A5 B4 B5 B5R LGL 11x17 LTR LTRR
STM
T
U1* U2* U3*
PSIZ
E1
ON OFF ON OFF OFF ON ON OFF ON ON ON ON OFF OFF OFF
PSIZ
E2
OFF ON OFF ON OFF OFF ON ON OFF ON ON ON ON OFF OFF
PSIZ
E3
OFF OFF ON OFF ON OFF OFF ON ON OFF ON ON ON ON OFF
PSIZ
E4
OFF OFF OFF ON OFF ON OFF OFF ON ON OFF ON ON ON ON
PSIZE4
PSIZE2
PSIZE1
PSIZE3