Sequence Of Detection (Level Of Toner) - Canon iR1600 Series Service Manual

CHAPTER 5 IMAGE FORMATION SYSTEM

5.2 Sequence of Detection (level of toner)

The level of toner is detected while the developing bias is applied during initial rotation
and warm-up.
The following is the sequence used to detect the level of toner during warm-up:
Level checked by
voltage level
TNRCHKT<TNRCHKD.
Level check
Developing AC bias
Developing DC bias
The following sequence is used to detect the level of toner during initial rotation:
Level checked by
TNRCHKT<TNRCHKD.
Level check
Developing AC bias
Developing DC bias
5-12
COPYRIGHT© 2002 CANON INC.
Power switch
ON 140 C
WAIT
WMUP
WMUPR
F05-502-01
for about 0.2 se for more.
Start key
ON
STBY INTR
0.1
F05-502-02
2000
A retry is made if
activation continues
for about 0.2 sec
or more.
0.1
1st
re-try
A re-try is made if
activation continues
1st 2nd
re-try
re-try
CANON iR1600/iR2000/iR1610/iR2010 SERIES REV.0 MAR. 2002
The absence of
toner is indicated
after a 2nd re-try.
(unit: sec)
2nd
re-try
The absence of
toner ins indicated
after a 3rd re-try.
(unit: sec)
PRNT
3rd
re-try