2000 - Main Motor Error; Corrective Action - Kyocera FS-1900 Service Manual

(5) 2000 - Main motor error

Meaning
The main motor is
overloaded.
Call service
2000:0123456
Turn power switch off.
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.
OK?
Yes
Turn power switch on.
+24 V DC
at #1 pin of YC802
on engine board
(KP-864) ?
Yes
NOTE:
If the problem is not solved by this flow
chart replace the following items:
Harness (S02401) between engine
relay board (KP-760) and engine
board (KP-864)
Drive unit (See page 5-27.)
Engine board (KP-864) and main
motor (replace at the same time)
Suggested causes
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.
No
Replace harness (S02405)
between engine board
(KP-864) and engine
relaly board (KP-760).
No
Replace engine relay board
(KP-760). See page 5-15.
6-13

Corrective action

Follow the flow chart
below.
Print status page.
Does
pin #3 (MMOTON*)
of YC802 on engine board
(KP-864) goes high,
then low?
Yes
Print status page.
Does pin
#7 (MMOTRDY*)
of YC802 on engine board
goes low, after pin #3
(MMOTON*) of
YC802 goes
low?
Yes
Replace engine board
(KP-864). See page 5-22.
Replace Main motor.
See page 5-27.
No
No
FS-1900