Outline; Stationary Jam At Power-On - Canon iR7086 Series Service Manual

8.3.3.2 Stationary Jam at Power-On

iR7105 / iR7095 / iR7086
A stationary jam at power-on is identified in relation to the presence/absence of paper over a specific sensor about 1 sec after the control panel power switch is
turned on.
8.4 Cassette Pick-Up Unit

8.4.1 Outline

iR7105 / iR7095 / iR7086
When the deck or the cassette is slid in, the cassette open/closed sensor turns on and, at the same time, the pickup roller starts to move down, causing the light-
blocking plate to leave the lifter sensor, driving the cassette lifter motor and, ultimately, moving up the lifter.
The lifter keeps moving up until the lifter sensor detects the surface of paper. (In the case of the deck right/left, a limiter is mounted to stop the lifter if it fails to
stop moving up.)
When the deck or cassette open button is pushed, the drive gear of the lifter becomes free to let the lifter move down on its own weight.
Cassette open/closed detection
Lifter position detection
Paper presence/absence detection
Paper level detection
Lifter upper limiter
Drive motor
Copy Start key
ON or
PRINT set
regulation time
Jam check
Sensor N
Right deck
Deck right open/closed sensor
(PS23)
Lifter sensor (PS21)
Deck right paper sensor (PS22) Deck left paper sensor (PS32) Cassette 3 paper sensor (PS39) Cassette 4 paper sensor
Deck right paper level middle
sensor (PS51)
Deck right paper level upper
sensor (PS52)
Deck right limit sensor (PS24) Deck left limit sensor (PS34)
Deck right lifter motor (M13)
A jam check is started after feeding
"regulation time" upon detection of the
leading edge of paper.
INTR / PRINT
regulation time
Normal
If paper is detected here, a
stationary jam is identified.
F-8-10
T-8-6
Left deck Cassette 3
Deck left open/closed sensor Cassette 3 open/closed sensor
(PS33) (PS40)
Lifter sensor (PS31) Lifter sensor (PS38)
Deck lifter paper level middle Cassette 3 paper level detection
sensor (PS54) PCB (variable resistor)
Cassette 2 paper level upper
sensor (PS55)
---
Deck lifter motor (M14) Cassette 3 lifter motor (M16)
Error
Cassette 4
Cassette 4 open/closed sensor
(PS45)
Lifter sensor (PS43)
(PS44)
Cassette 4 paper level
detection PCB (variable
resistor)
---
Cassette 4 lifter motor (M17)
Chapter 8
0010-8197
0010-8199
8-9