Canon iR C2880 series, Руководство по обслуживанию

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Chapter 8
8-20
SL4: Multi lifting plate up/down solenoid
M6: Registration multi pickup motor
A paper that is picked up from the manual feeder pickup assembly moves forward the distance where the predetermined arching (5.5 mm) is added after detecting
the leading edge with the pre-registration sensor (PS7). Then, the paper stops at the registration roller once by turning OFF the manual feeder pickup clutch (CL5).
As the registration roller turns ON, the manual feeder pickup clutch (CL5) turns ON. After the registration roller feeds a paper for the predetermined amount (55
mm), turn OFF the manual feeder pickup clutch (CL5).
The pickup from the manual feeder pickup assembly is executed either the normal speed (55 mm/min) or the half speed (71.5 mm/min) depending on the media type.
In case of the transparency, pickup is executed with the half speed and the paper is fed to the registration roller with the same speed. If there is another paper, pickup
is executed by setting back the registration multi pickup motor speed (M6) to half when the first paper moves 5 mm downstream from the registration roller.
Reference:
The sensor that detects the last paper is not equipped with the manual feeder pickup unit of this machine.
8.6.2 Basic Sequence of Operation
0014-0320
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
The multi-pickup roller starts to rotate when the manual pickup clutch (CL5) goes on to start upper separation to pick up a single sheet of paper. When the leading
edge of the sheet reaches the pre-registration sensor (PS7) and is moved a specific distance, the manual pickup clutch goes off, causing the sheet to arch in the
registration roller area.
When the registration clutch (CL6) goes on, the manual feed pickup clutch (CL5) once again goes on to pick up paper. The manual feed pickup clutch (CL5) goes
off immediately before the trailing edge of paper moves past the manual feed pickup roller; thereafter, the registration roller serves to pull off the paper.
F-8-23
8.6.3 Identifying the Paper Size
0014-5227
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
The width of paper is detected with reference to the output of the variable resistor (SVR1), which operates in conjunction with the movement of the side guide.
The side guide in the manual feed tray is set when the user moves it to place paper in the cassette.
F-8-24
[1] Side guide (rear)
[2] Stop arm
[3] Center gear
[4] Side guide (front)
[5] Variable resistor (SVR1)
[6] Manual feed tray
Calculate the paper width from the A/D converted value of the manual feed volume.
Register the A/D converted values of 3 points (paper width of A4, A4R, and A6R) that are the reference values to the backup RAM beforehand. (Execute the setup
in the service mode.)
Service Modes:
- Register the reference points
COPIER > FUNCTION > CST > MF-A4R
COPIER > FUNCTION > CST > MF-A6R
COPIER > FUNCTION > CST > MF-A4
- Adjustment of the foregoing reference points
PRINT LSTR
Registration
clutch (CL6)
Manual feed pickup
clutch(CL5)
Multi lifting plate up/
down solenoid (SL4)
Registration multi
pickup motor (M6)
Pre-registration
sensor (PS7)
Print start
[1]
[2]
[3]
[4]
[5]
[6]