Toshiba e-STUDIO 5540C Service Manual page 919

Step Check item
34
<Checking with the enforced image position adjustment >
35
36
< Validating the image position alignment control >
Check the operation and correct if necessary. Then be sure to perform the following:
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38
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40
<Checking the image position aligning sensor>
41
<Checking the power supply>
42
Replace parts
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Result
Is a certain color in the printed image turned to
black solid?
Abnormal
Abnormality in the main high-voltage
transformer corresponding to the color or
abnormality in the laser optical unit.
Replace one of 4 main high-voltage
transformers which possibly contains
abnormality, and also the one possibly normal.
Then print the same test pattern.
If the color which turned into black solid
changes along with the replacement of the
main high-voltage transformer, this main
highvoltage transformer is defined as
abnormal.
If the color which turned into black solid does
not change, check if the harness between the
LGC board and the main high-voltage
transformer is broken or if the power is
sufficiently supplied to the main charger
(breaking of the high-voltage harness or
connection defect). If no problem is found,
check the laser optical unit.
Turn the power ON while [0] and [5] are
pressed simultaneously.
Key in "4719", then press the [START] button.
(05-4719: Enforced position adjustment)
Does the error [CA00] occur during the position
adjustment control?
[0] [8] Power ON
[4546] [START]
Set the value to "5" (performed automatically).
Power OFF
Clean the image position aligning sensor (S20/
S21/S22).
Check if any of the springs for supplying power
to the transfer belt unit is deformed. Replace
the spring if it is deformed.
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Measures
Remarks
e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C
ERROR CODE and TROUBLESHOOTING
Next
step
30
8
YES
5
NO
37