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Subject Symptom
TSB
# Cause
Solution
Color
misalignment
If the user
performs Auto
Color
Registration.
Firmware
History
Engine firmware
Install version 1.26:08 or
newer.
Engine (Single
Pass DF)
firmware
Engine firmware
Install version 1.20:01 or
newer.
Hot offset
If SC620 is
triggered 50 or
more times.
Firmware
History
Engine firmware
Install version 1.26:08 or
newer.
Engine firmware
Install version 1.20:01 or
newer.
Toner blasting
Toner density
control error
D146/D147/
D148/D149/
D150 - 024
The firmware
fails to set a
target minimum
value for toner
concentration
during process
control. So, the
machine supplies
more toner than
the target
amount.
Check and adjust the SPs as
described in the TSB. Then
do ACC.