Canon imagePRESS C1 Service Manual - page 395
Chapter 7
7-46
F-7-56
The followings show the timing of the developing rotary at printing.
- Timing chart of the developing rotary (at full-color print)
F-7-57
- Timing chart of the developing rotary (at monochrome print)
F-7-58
Relevant error code:
E021 (error of abnormal rotation of the developing unit)
The error is identified if the symptom meets the following 2 conditions:
-0001 (developing rotary HP sensor error)
- in the case that developing rotary HP fails to be detected
- 0002 (developing rotary driver sequence error)
- in the case that there is an operational instruction during the drive of the rotary motor
M
Y
C
Bk
Home position
Developing standby position (full color)
M
C
Bk
Y
Developing standby position (monochrome)
Bk
Y
C
M
LSTR
PSTBY
PINTR
developing rotary
motor
rotary HP sensor
(PS21)
laser scanner
motor
ITB home
position signal
PVREQ signal
laser
Turning ON the start key
Timing that image
formation is available
Y
M
C
BK
printer unit
LSTR
PSTBY
PINTR
developing rotary
motor
rotary HP
sensor (PS21)
Turning ON the start key
Timing that image
formation is available
printer unit
laser scanner
motor
ITB home
position signal
PVREQ signal
laser
BK