Toshiba e-studio 2555c, Service Manual

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© 2012-2013 TOSHIBA TEC CORPORATION All rights reserved e-STUDIO2555C/3055C/3555C/4555C/5055C
ERROR CODE AND TROUBLESHOOTING
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Image position aligning sensor • Check the connectors and
harnesses (J673, J781) between
the image position aligning sensor
and the LGC board (CN366).
• Check if the light emitting or
receiving area of the image position
aligning sensor stained with toner.
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Are the sensor shutters of the
image position aligning sensor
opening or closing normally? Are
they normal without any damage?
1. Take off the transfer belt unit so
that the sensor unit can be
seen.
2. Turn the power ON while [0]
and [3] are pressed
simultaneously.
3. The shutter should be opened
when “125” is keyed in. It
should be closed when “175” is
keyed in.
Yes 14
No 15
14
Is the light emitting area of the
image position aligning sensor
emitting LEDs?
1. Key in “125” to open the sensor
shutter.
2. The light emitting area of the
sensor should emit LEDs when
"126" is keyed in.
Yes 16
No 15
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Image position aligning sensor • Connector and harness check
• Clean the light emitting and
receiving areas of the image
position aligning sensor.
• If the sensor shutter is damaged,
replace it.
• If the sensor shutter solenoid is not
operating normally, replace the
solenoid.
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< Checking with test pattern > • Turn the power ON while [0] and [4]
are pressed simultaneously.
• Key in “286”, then press the
[START] button.
• Press the [CLEAR] button after one
sheet of test pattern has been
exited.
• Check if the printed image of the
test pattern in each color contains
difference in density on its front,
center and rear sides, or if there is
any image trouble in a whole
image.
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Is the image of the test pattern
printed normally without any
difference in density on its front
and rear sides? Yes 20
No 18
Step Check Item Result Measure
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