Filter
Top Products
Paper Jam Detection
The PIU Sensor (PS2), the Registration Sensor (PS1), the Fuser Delivery
Sensor (PS1403), and the Face-Down Delivery Sensor (PS1402) detect when
paper is moving through the printer (see Figure 5-15 for sensor locations).
If a paper jam is detected, the DC Controller immediately stops the printing
process and causes a 13.x PAPER JAM message to be displayed on the
control panel. If a paper jam occurs in the Envelope Feeder, Duplex Unit,
2000-Sheet Input Unit, or Multi-Bin Mailbox/Mailbox With Stapler, the
13.x Paper Jam message will indicate the approximate location. Refer to
Table 7-1 for more details.
Printer Timing
The Formatter PCA and the DC Controller PCA share information during
printer operation. This information consists of printer status, command,
and dot-image data. Figure 5-22 and 5-23 show the general timing of the
printer events. The following events take place during normal printer
operation:
Period Timing Purpose
WAIT From power ON to the end of Main Motor initial
rotation.
Clear the drum surface potential and clean the
Transfer Roller.
STBY
(standby)
From the end of the WAIT or the LSTR period
until the input of the PRNT signal from the
Formatter PCA. Or from the end of the LSTR
period to power OFF.
Maintain the printer in the READY state.
INTR
(initial rotation)
From the input of the PRNT signal from the
Formatter PCA until the laser diode intensity has
been stabilized.
Stabilize the photosensitive drum sensitivity in
preparation for printing. Clean the Transfer
Roller.
PRNT From the end of the initial rotation until the
Scanner Motor stops.
Form images on the photosensitive drum based
on the /VDO signal from the Formatter PCA.
Transfer the image to the media.
LSTR
(last rotation)
From the primary voltage (DC) OFF until the
Main Motor stops.
If another PRNT signal is sent from the
Formatter PCA, the printer returns to the INTR
period. If not, it returns to the STBY period.
Deliver the last sheet of paper, and clean the
Transfer Roller.
Table 5-9 Printer Timing
5-40 Functional Overview