Toshiba e-STUDIO5540C Service Manual page 297

Cause/Section Step
Printer output 5
image
abnormal
If the trouble is not solved at the step 1 and the step 2 or followings (excluding the parameter
adjustment) are performed, make sure to perform "Image quality closed-loop control" and then
"Automatic gamma adjustment" after taking a measure.
e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C
ERROR CODE and TROUBLESHOOTING
Check item
Is there any faded image (low
density)?
Is there any fog in the
background?
Is there any blotch image?
Is there any poor transfer?
Is there any poor cleaning of
the transfer belt? (Check inside
the equipment.)
Is each stripe of 4 colors of the
laser array breakage detection
pattern printed out normally?
Also, are the density level of
stripes even?
Measures
Perform the troubleshooting
procedures against the faded
image.
Perform the troubleshooting
procedures against the
background fogging.
Perform the troubleshooting
procedures against the blotch
image.
Perform the troubleshooting
procedures against the poor
transfer.
Correct the transfer belt area.
If any one of stripes has not
been output or density level of
each stripe is different, replace
the laser optical unit.)
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Remarks