Punch Slide Motor Error - Kyocera TASKalfa 7002i Service Manual

C8420: Punch slide motor error 2
Object: 4000-sheet finisher + Punch unit
The paper edge cannot be detected even if shifting 30mm when detecting the paper edge.
Step Check description
1 Checking the punch unit
2 Checking the punch drive
components
3 Checking the connection
4 Replacing the PH slide
motor
5 Checking the PH paper
edge sensor 1, 2
6 Replacing the PH main
PWB
7 Replacing the DF main
PWB
Assumed cause
The punch unit is not
assembled properly.
The punch cam drive parts
are not properly attached
or faulty.
The connector is not prop-
erly connected. Or, the
wire is faulty.
The punch slide motor is
faulty.
PH paper edge sensor 1 or
2 is not properly attached
or faulty.
The PH main PWB is
faulty.
The DF main PWB is
faulty.
7-465
Measures
If the punch slide section is
not shifted manually forward-
backward, repair the part that
restricts the operation.
Reattach the punch drive
parts. If not repaired, replace
them.
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors. If
there is no continuity, replace
the wire. • Punch slide motor
- PH main PWB • PH paper
edge sensor 1, 2 - PH main
PWB • PH main PWB - DF
main PWB
Execute U240 [Motor] >
[Punch Move]. If the punch
slide motor does not properly
operate, replace it.
Reattach PH paper edge sen-
sor 1 or 2 and execute U241
[Punch] > [Edge Face1] or
[Edge Face2]. If the sensor
does not properly operate,
replace it.
Replace the PH main PWB.
Replace the DF main PWB.
2WA/2NJ/2RK
Reference
Wiring dia-
gram
Executing
U240
Executing
U241
Detaching
and reat-
taching the
DF main
PWB