Malfunction - Kyocera ECOSYS P2235dw Service Manual

7-7 Malfunction

No.
(1) The main unit does not operate at all even if the
power switch is turned on
(2) Toner drops over the paper conveying section.
(3) The login fails with other than the ID card
Content of Malfunction
(1) The main unit does not operate at all even if the power switch is turned on
Step Check description
1 Measuring the input volt-
age
2 Checking the power cord
3 Checking the power switch The power switch is faulty.
4 Checking the connection
5 Replacing the low voltage
PWB.
6 Replacing the main/engine
PWB
(2) Toner drops over the paper conveying section.
(Final phenomenon: Toner adheres on the paper leading edge)
Step Check description
1 Cleaning the developer
unit and drum unit
2 Replacing the developer
unit
Contents
Assumed cause
The power cord has no
continuity.
The power cord is faulty.
The connector is not prop-
erly connected or the wire
is faulty.
The low voltage PWB is
faulty.
The main/engine PWB is
faulty.
Assumed cause
The developer unit or drum
unit is dirty.
The toner is deteriorated.
7-116
2RV/2RW/2RX/2RY/3RA-3
Condition
(Final phenomenon: Toner adheres on the paper
leading edge)
Measures
Plug the power cord into
another wall outlet.
Check the continuity in the
power cord, and replace the
power cord if there is no con-
tinuity.
Check the continuity between
the contacts of the power
switch. Then, replace the
power switch if there is no
continuity.
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors. If
there is no continuity, replace
the wire.
• Low voltage PWB (YC103) -
Main/engine PWB (YC20)
Replace the low voltage
PWB.
Replace the main/engine
PWB.
Measures
Clean the developer unit and
drum unit.
Replace the developer unit.
Reference
Reference