Utax CLP 3721 User Manual

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Technical Bulletin UTAX
UTAX
CLP 3721
CLP 3726
TA
TA
CLP 4721
CLP 4726
TB 21 / The color registration drift due to coming off…
2KW-D096/M
Date: 28-05-2013
T OPIC :
Please note the following when detaching the Bk drum unit because the ID sensor shutter may come off depending on the
way to detach the Bk drum unit (Note 1). In a rare case, it causes the color registration drift if the main machine continues
drive while the ID sensor shutter comes off.
N
OTE :
When detaching the Bk drum unit, please hold the both sides of that unit, and pull it frontward along the guide rails inside the
machine.
If the ID sensor shutter comes off and cannot slide, it covers the ID sensor even if the top tray is closed.
Then, acquiring the correction fails because the ID sensor covered cannot scan patch patterns drawn on the transfer
belt at the color registration executed when turning on the main power, etc. (Note 2)
As a result, the color registration is executed based on the correction that was normally acquired last time, the
difference with the actual state of the machine is widened per the execution of the color registration and the color
registration drift gradually appears.
Note 1: The ID sensor shutter may come off due to contact of the Bk drum unit if detaching the Bk drum unit in the order of
right and left side. (Normally, it is recovered by pressure of the transfer belt unit from upside when reattaching the
transfer belt unit. If detaching the Bk drum unit in the order of right and left side, to make sure, please confirm the ID
sensor shutter's sliding motion by opening and closing of the top tray after closing the RFID holder, and recover it if
necessary.)
Note 2: If acquiring the correction fails when executing the color registration, the error message does not appear. While the
failure or success of the acquirement can be checked by referring to the numeric (Refer to the figures in the next
page) of the calibration result on the 2nd page of the maintenance report (for MFP) or the service status page (for
Printer). ("00" means the success and other numeric means the failure.)
Inside the Bk drum unit] (Without the Bk drum unit)
* In the normal operation, the ID sensor shutter opens by sliding
rightward when closing the top tray, and it closes by sliding
leftward when opening the top tray. (Above is the state when
opening the top tray.)
Top tray
Bk drum unit
RFID holder
Where the Bk drum
unit may contact
ID sensor shutter
ID sensor ID sensor

Utax CLP 3721 Specifications

General

Brand	Utax
Model	CLP 3721
Category	Printer
Language	English