Error Code (E020) Related To Control Of Toner Concentration - Canon 1130 Service Manual

CHAPTER 6 IMAGE FORMATION SYSTEM

6. Error Code (E020) Related to Control of Toner Concentration

'E020' is used to indicate a fault associated with the concentration of toner and the hopper
drive mechanism. ATR control uses different methods for Bk and M/C/Y, and the following two
types of control are performed for each:
1. Controlling the concentration of toner to the initial setting at time of installation and
replacement of developer.
2. Controlling the concentration of toner inside the developing assembly to a level during
copying sequence.
ATR is explained below in terms of ATR associated with the black toner concentration sensor
and the color (M/C/Y) toner concentration sensor and in terms of when 'E020' and its detailed code
are indicated.
a. Flow of toner supply control in the hopper assembly and its related detail code
b. Flow of initial setting control using the black toner concentration sensor and its related detail
code (at time of replacement of developer)
c. Flow of initial setting control using the color toner concentration sensor and its related detail
code (at time of replacement of developer)
d. Flow of control using the black toner concentration sensor during copying operation and its
related detail code
e. Flow of control using the color toner concentration sensor during copying operation and its
related detail code
a. Flow of Toner Supply Control in the Hopper Assembly and Its Related Detail
Code
Initial settings
1. During copying
operation
2. During copying
operation (during
toner supply)
6-40
COPYRIGHT © 2002 CANON INC.
Flow of operation
During copying operation,
the toner supply clutch is
off.
During copying operation,
the toner supply clutch is on
and the hopper is supplying
the developing assembly
with toner.
CANON CLC1100/1130/1150/1160/1180 REV.1 JAN. 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
Detail code Items of detection
00FF Hopper motor error
01FF The M hopper is not
supplying toner.
02FF The C hopper is not supplying
toner.
03FF The Y hopper is not supplying
toner.
04FF The Bk hopper is not
supplying toner.