Utax CLP 3721 User Manual

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Technical Bulletin UTAX
UTAX
CLP 3721
CLP 3726
TA
TA
CLP 4721
CLP 4726
TB 12 / Firmware Upgrade (color reg. drift / density)
2KT-C132/M
Date: 30-05-2012
T OPIC :
The engine firmware is upgraded for the corrective measures for the color registration drift and color image density down.
Upgrade the engine firmware as described in [Firmware upgrade procedures] when the color registration drift or color image
density down appears. Note the top margin and left margin may shift unless the firmware is upgraded as in the procedures.
C ONTENT OF CHANGES :
 Corrective measure for the color registration drift.
The reference color for the color registration adjustment is changed from K(Black) to M(Magenta).
The auto color registration adjustment control, LSU temperature compensation, LSU temperature control table and top margin adjustment,
etc. are changed after the above change.
 Corrective measures for the color image density down.
It is so changed that the developer units are not driven during warm-up after recovery from sleep mode and after cover closeto prevent the
developer powder deterioration.

FIRMWARE
Type Program No. Remarks
MAIN
2KV_3F00.003.007
ENGINE  CLP 3721 / CLP 4721
2KT_1000.007.004
NEW
ENGINE  CLP 3726 / CLP 4726
2KV_1000.007.004
NEW
F IRMWARE UPGRADE PROCEDURES :
Note: The engine firmware consists of (1) adjustment firmware and (2) upgrade firmware.
Prepare 2 pcs. of USB memory.
1. Print the service status page. <For check of the current firmware version>
2. Download the adjustment firmware.
Connect the USB memory with the adjustment firmware to the machine.
When completing download as shown in [Fig.1], turn the power off and disconnect
the USB memory.
Turn the power on and confirm [C9999] appears as in [Fig.2].
Turn the power off.
3. Download the upgrade firmware.
Connect the USB memory with the adjustment firmware to the machine.
When completing download as shown in [Fig.3], confirm the engine firmware version
is correct by pressing the upward or downward key.
Turn the power off and disconnect the USB memory.
4. Turn the power on and print the service status page to confirm the firmware
upgrade is correctly done.
5. Print the color registration chart and manually adjust the color registration (detail)
if necessary.
Reset Firmware Upgrade Firmware
CLP 3721 / CLP 4721
2KT_1000.CF5.001 2KT_1000.007.004
CLP 3726 / CLP 4726
2KV_1000.CF5.001 2KV_1000.007.004
Fig-2
Fig-1
Fig-3

Utax CLP 3721 Specifications

General

Brand	Utax
Model	CLP 3721
Category	Printer
Language	English