Kyocera TASKalfa 7002i Service Manual page 1143

Step Check description
4 Checking the DF drum
motor
5 Checking the drive parts
6 Checking the DF main
PWB
J6710: DF drum sensor stay jam during paper conveying into the BF unit
Object: 4000-sheet finisher with the folding unit
The DF drum sensor does not turn off after passing the certain time since it turned on when conveying the
paper to the folding unit.
Step Check description
1 Checking the paper con-
veying parts
2 Checking the DF drum
sensor
3 Checking the DF retraction
drum motor
Assumed cause
The DF drum motor does
not properly operate.
The drive from the DF
drum motor is not properly
transmitted.
The connector is not prop-
erly connected or the wire
or PBW is faulty.
Assumed cause
The roller, guide, etc. are
not properly attached or
they are dirty, deformed or
worn down.
The DF drum sensor does
not properly operate.
The DF relief drum motor
does not properly operate.
7-283
Measures
Execute U240 [Motor] >
[Eject Conv(H)] or [Eject
Conv(L)]. If the DF drum
motor does not properly oper-
ate, reattach it and reinsert
the connector. If not repaired,
replace it.
Check if the DF drum motor
smoothly rotates manually.
Then, clean and reattach the
drive parts if necessary. If not
repaired, replace them.
Reconnect all the connector
to the DF main PWB. Then,
fix or replace the wires if they
are pinched by the other part
or if they have any damage.
When the issue is not
resolved, replace the DF
main PWB.
Measures
Clean and correct the con-
veying parts such as the
roller or the guide, and reat-
tach them. If not repaired,
replace them.
Turn the DF drum sensor on
and off manually and check
the indication at U241 [Fin-
isher] > [Drum]. If the DF
drum sensor does not prop-
erly operate, clean and reat-
tach it and reinsert the
connector. If not repaired,
replace it.
Execute U240 [Motor] >
[Save(H)] or [Save(L)]. If the
DF relief drum motor does
not properly operate, reattach
it and reinsert the connector.
If not repaired, replace it.
2WA/2NJ/2RK
Reference
Executing
U240
Detaching
and reat-
taching the
DF main
PWB
Reference
Executing
U241
Executing
U240