Kyocera FS-1920 - Page 54

2FP/2FY/2FR
1-5-4
Code Contents
Remarks
Causes Check procedures/corrective measures
Main motor error
• The main motor is overloaded.
Overcurrent in the
main motor cir-
cuitry due to an
excessive torque.
Connector inser-
tion error.
Defective gate
array U7 on the
engine board (KP-
1081).
Defective harness
between engine
board and engine
relay board (KP-
1071).
Defective harness
between engine
relay board (KP-
1071) and main
motor.
Follow the flow chart below.
2000
Print status page.
Yes
Yes
No
No
Replace engine board
(KP-1081). See page 1-6-
20.
Does pin
#18 (MMOTRDY*)
of YC7 on engine board
goes low, after pin #16
(MMOTON*) of
YC7 goes
low?
Yes
Yes
No
No
Replace harness (S03012)
between engine board
(KP-1081) and engine
relay board (KP-1071).
Replace engine relay
board (KP-1071). See
page 1-6-13.
OK?
START
Remove and check
harness (S03012)
between engine board
(KP-1081) and engine
relay board (KP-1071),
or harness
(S02401*
1
*
3
/S03026*
2
)
between engine relay
board (KP-1071) and
main motor.
+24 V DC
at #1 pin of YC802
on engine board
(KP-1081) ?
Does
pin #16 (MMOTON*)
of YC7 on engine board
(KP-1081) goes high,
then low?
Print status page.
Turn power switch off.
Turn power switch on.
Replace Main motor.
See page 1-6-25.
NOTE:
If the problem is not solved by
this flow chart replace the
following items:
Harness (S03012) between
engine relay board (KP-1071)
and engine board (KP-1081)
Drive unit (See page 1-6-25.)
Engine board (KP-1081) and
main motor (replace at the same
time)
*
1
: FS-1920 model
*
2
: FS-3820N model
*
3
: FS-3830N model