Kyocera FS-1800 - E1 Main Motor Error

6-17
FS-1800/1800N | FS-3800/3800N
(13) E1 Main motor error
Meaning Suggested causes Corrective action
The main motor is
overloaded.
• Overcurrent in the main motor circuitry due
to an excessive torque.
• Connector insertion error.
• Defective gate array U204 on the engine
board (KP-864).
• Defective harness between engine board and
engine relay board (KP-760).
• Defective harness between engine relay board
(KP-760) and main motor.
Follow the flow chart
below.
Print status page.
Yes
Yes
No
No
Replace engine board
(KP-864). See page 5-22.
Does pin
#7 (MMOTRDY*)
of YC802 on engine board
goes low, after pin #3
(MMOTON*) of
YC802 goes
low?
Call service
personE1:0123456
Yes
Yes
No
No
Replace harness (S02405)
between engine board
(KP-864) and engine
relaly board (KP-760).
Replace engine relay board
(KP-760). See page 5-15.
OK?
Remove and check
harness (S02405)
between engine board
(KP-864) and engine
relaly board (KP-760),
or harness (S02401)
between engine board
(KP864) and main
motor.
+24 V DC
at #1 pin of YC802
on engine board
(KP-864) ?
Does
pin #3 (MMOTON*)
of YC802 on engine board
(KP-864) goes high,
then low?
Print status page.
Turn power switch off.
Turn power switch on.
Harness (S02401) between engine
relay board (KP-760) and engine
board (KP-864)
Replace Main motor.
See page 5-27.
Drive unit (See page 5-27.)
Engine board (KP-864) and main
motor (replace at the same time)
NOTE:
If the problem is not solved by this flow
chart replace the following items: