Canon PC1000s Service Manual page 157

CHAPTER 4 OPERATION
Power
ON
or
Reader unit in initlal podition
(While the power remains ON.)
or End
of
prinling
Return from
ESS
mode
tt
1
If
a print command is recehmd
during
last
rolaUon
1
Wait
Standby
Last rotation
If
continuous printing is selected
F04-101-03
Period Definition
Pur~ose
Remarks
WAIT From when the power The machine's mechanical A check is made on the presence/
(wait) is turned on until and electrical states are absence of a cartridge and for paper
when the application checked. remaining inside the machine. The
of the primary charg- machine also shifts the
WAIT
state
ing AC bias is started
when the reader unit is returned to
and stopped.
the home position while power is on,
or after returnine from ESS mode.
- - -
STBY After the end of The machine is ready for a If a shift is from last rotation of
(standby) WAIT, unit the Start print command.
printing on LTR or larger, the fixing
key is pressed.
heater is subjected to rest heating
temperature control for 5 sec.
INTR After a press on the The machine starts up pro- The fixing heater is subjected to
(initial Start key, until the cess conditions and picks up temperature control (start-up tern-
rotation) leading edge is de- paper for printing. peralure control, paper passage tem-
tected by the paper perature control); scanner rotation
leading edge sensor. speed adjustment and ATVC control
are executed.
PRINT From when the paper The DC controller PCB gen-
(print) leading edge sensor erates the BW* signal, and
detects the leading the image processor
PCB
edge of paper to 1.5 sends VDO* signal and VDO
sec after it detects the signal, thereby forming a la-
trailing edge of paper. tent image on the photosensi-
tive drum and turning it into
a toner image.
LSTR From when printing The drum surface is made
ARw
las~ mtation, the machine sbilb to
(last ends until the main free of potential and the
standby to wait for a print command, in
rotation) motor stops. transfer charging roller is response to which it immediately shib
cleaned.
t o
initial rotation.
COPYRIGHT02002 CANON INC.
CANON PC1000snmageCLAS.S D600s REV.
1 AUG.2W2