Error Code 4000 [E2] (Polygon Motor Error) - Kyocera Mita FS-6020 Service Manual

FS-6020

(1-2) Error code 4000 [E2] (polygon motor error)

Detection conditions
• The polygon motor ready signal (MOTRDYN) does not become ready (L level) within a specified time after the polygon
motor drive signal (POLONN) is turned on (L level).
Corrective measures
Start
Is there any
damage to the harness
(S02819) between the main PWB
and the laser scanner unit or improper
connection at the YC8
connector on the main
PWB?
Yes
Turn on the printer, connect a tester
or an oscilloscope, and measure as
follows.
Is the voltage
at pin No. 5
(+24V3) of the main PWB
connector YC8 24
V DC?
Yes
Is the
frequency at pin No. 1
(POLCLK) of the main PWB
connector YC8 2.2
KHz?
Yes
1-5-4
* Possible defective locations
(causes)
• Laser scanner unit
• Engine/high voltage PWB
• Harness (S02819)
• Main PWB
No
If any problem is found, repair
or replace it.
No
Replace the engine/high
voltage PWB. (See page 1-
6-26.) If the error is not
cleared, replace the main
PWB. (See page 1-6-25.)
No
Replace the engine/high
voltage PWB. (See page 1-
6-26.) If the error is not
cleared, replace the main
PWB. (See page 1-6-25.)
Print a status page.
Does the level
at pin No. 3
(POLONN) of the main PWB
connector YC8 change
from H to L?
Replace the engine/high
Yes
voltage PWB. (See page 1-
6-26.) If the error is not
cleared, replace the main
PWB. (See page 1-6-25.)
Print a status page.
Does the level
at pin No. 2
(POLRDYN) of the main PWB
connector YC8 change
from H to L?
Yes
Replace the laser scanner
unit. (See page 1-6-15.)
Replace the engine/high
voltage PWB. (See page 1-
6-26.) If the error is not
cleared, replace the main
PWB. (See page 1-6-25.)
No
OK?
Yes
Replace the laser scanner
unit. (See page 1-6-15.) If the
error is not cleared, replace
the laser scanner unit and the
engine/high voltage PWB at
the same time.
End
No
No