Kyocera KM-4230 Service Manual page 38

A When the print key is pressed, the paper feed motor (PFM) turns on, and 250 ms later
the drive motor (DM) turn on to start drive for the paper feed section.
B 100 ms after the print key is pressed, the bypass solenoid (BYPSOL) turns on. The
bypass stopper is then unlocked, and the bypass forwarding pulley lowers to forward the
paper.
C 300 ms after the bypass solenoid (BYPSOL) turns on, the bypass paper feed clutch
(BYPPFCL) turns on, and the upper and lower bypass paper feed pulleys rotate to start
primary paper feed.
D 115 ms after the leading edge of the paper turn the feed switch (FSW) on, feed clutch
5 (FCL5) turns on, and the lower feed roller rotates at low speed to create slack in the
paper before registration.
E 200 ms after the feed switch (FSW) turns on, the bypass paper feed clutch (BYPPFCL)
turns off.
F 90 ms after feed clutch 5 (FCL5) turns on, the bypass solenoid (BYPSOL) turns off.
G 65 ms after the leading edge of the paper turns the registration switch (RSW) on, feed
clutch 5 (FCL 5) turns off.
H 74 ms after the image ready signal turns on, the registration clutch (RCL) turns on, and
the upper and lower registration rollers rotate to start secondary paper feed.
Simultaneously, feed clutch 5 (FCL5) turns on and lower feed roller rotates at low speed.
I 100 ms after the trailing edge of the paper turns the feed switch (FSW) off, feed clutch
5 (FCL5) turns off.
J 80 ms after the trailing edge of the paper turns the registration switch (RSW) off, the
registration clutch (RCL) turns off.
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