Canon LBP-1210 Service Manual page 88

CHAPTER 2
B. Basic Operation Sequences
The operation sequences of this printer are controlled by the microprocessor on the engine con-
troller PCB. The purposes of periods from power ON until the main motor stops after the com-
pletion of printing are described below. See the appendix for timing chart.
Periods
WAIT (WAIT From power ON until the main
period) motor completes the initial
drive.
STBY From the end of the WAIT
(STANDBY period or the LSTR period until
period)) t h e i n p u t
command from the nterface
controller.
Or, from the end of the LSTR
period until power-OFF.
INTR From the input of a pick-up
(INITIAL command from the interface
ROTATION controller until the paper
period) reaching the paper top sensor.
PRNT From the end of the initial
(PRINT rotation until the primary
period) voltage going OFF.
LSTR (LAST From the primary voltage going
ROTATION OFF until the main motor
period)
discontinue rotating.
2 - 2
Table 2-1-1
C l e a r s t h e d r u m s u r f a c e
p o t e n t i a l a n d c l e a n s t h e
transfer charging roller.
Maintains printer in ready
mode.
o f a p i c k - u p
Stabilizes the sensitivity of the
p h o t o s e n s i t i v e
preparation for printing.
F o r m s a n i m a g e o n t h e
photosensitive drum according
to the video signal input from
the interface controller, and
transfers the image to paper.
Delivers the final page and
cleans the transfer charging
roller.
Purposes
Toner cartridge in/out
detection is executed.
d r u m i n
As soon as the print
command is input from
the interface controller,
the printer enters the
I N I T I A L
period.
Remarks
R O T A T I O N