Toshiba e-STUDIO 2555C Service Manual page 754

[CE70] Drum drive switching abnormality
Classification
Image control related service call
Step Check Item
Is the drum switching motor (M3)
operating properly? (Perform the
1
output check: 03-240)
Drum switching motor (M3)
2
Drum switching detection sensor
3
(S11)
LGC board
4
Is the drum switching detection
sensor (S11) working? (Perform
the input check: 03-[ALL]OFF/[8]/
5
[F] (Highlighted in the black
mode))
Drum switching detection sensor
(S11)
6
LGC board
7
Is the drum switching motor
assembled in the drum drive unit
8
able to be rotated smoothly by
hand?
Drum switching motor (M3)
9
Is the drum switching guide able to
be moved smoothly by hand after
10
the drum switching motor has
been removed?
Drum switching motor (M3)
11
LGC board
12
Replacement part
Drum switching motor (M3)
e-STUDIO2555C/3055C/3555C/4555C/5055C
ERROR CODE AND TROUBLESHOOTING
Drum drive switching abnormality: The drum switching
detection sensor (S11) is not turned ON after the drum motor
was rotated for a specified period of time.
Result
Yes
No
Check the connector of the motor and
joint connectors
Sensor check
• Connector check (CN391, CN392)
• Board check
Yes
No
• Sensor, connector, joint connector
check
• Check if there is any foreign matter
such as grease in the detection
area of the drum switching
detection sensor.
• Connector check (CN391, CN392)
• Board check
Yes
No
• While reinstalling the drum
switching motor, push it so that its
gear will slightly move away from
the engaging gear.
• Check the bracket in which the
drum switching motor is installed. If
it is deformed, replace it.
Yes
No
Check if the slide area (guide, plate) of
the drum switching guide is deformed
or any foreign matter is attached to it.
(Replace it if there is.)
Board check
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