Call Service 2010 - Main Motor Error - Kyocera FS-1050 - B/W Laser Printer Service Manual

(3) Call service 2010 - Main motor error

Call service
Call service
2010
2010
Remove and check
harness (S02773)
between engine board
(KP-882) and main
motor at pins 6 to 9 on
both ends.
No
OK?
Yes
+24 V DC at pin
9 of CN1 on
main motor?
Yes
Connect circuit tester to
pin 8 (MOTORN) of
YC04 on engine board
(KP-882) and ground.
Turn printer power off,
then on.
Print status page.
Does
pin 8 (MOTORN)
of YC04 on engine board
(KP-882) goes high,
then low?
No
Replace engine board
(KP-882). See page 5-11.
No
Replace harness (S02773)
between engine board
(KP-882) and main motor.
Connect oscilloscope to
pin 8 (MOTORN) and
pin 7 (MRDYN) of CN1
on main motor.
Turn power switch off,
then on.
Print status page.
Yes
Does
pin 7 (MRDYN)
of CN1 on main motor goes
No
high, then low, within 3 seconds
from pin 8 (MOTORN)
goes low?
Yes
Replace main motor. See
page 5-15. If not solved, check
or replace drive unit. See
page 5-16.
6-9
FS-1050