Datamax M-Class Mark II, Maintenance Manual

Page: 36 / 94

Adjustments and Maintenance
2-26
2.7 Darkness Adjustment
The Darkness Adjustment compensates for changes in print contrast that may occur when
the printhead (or a non-display Front Panel PCB) is replaced. Compare labels printed before
replacement to those printed after replacement to reveal possible contrast changes. Then, if
necessary, perform a Darkness Adjustment to restore the contrast level:
•
Non-Display Models:
Turn the Darkness Adjustment
clockwise to darken the print or
counterclockwise to lighten.
•
Display-Equipped Models:
Enter the menu and go to PRINT
CONTROL / CUSTOM ADJUSTMENTS /
DARKNESS, then increase the setting to darken printing or decrease it to lighten.

Note: Improper Darkness Adjustment increases can shorten the printhead service life.
For darker print, increase the HEAT setting and/or slow the PRINT SPEED.
2.8 Downloading Firmware and Fonts
The operating programs and fonts are stored in Flash memory. As updates and/or new
program features become available, they can be downloaded as follows:
1. Identify the new version of firmware for the printer model from
http://www.datamax-
oneil.com
2. Download the firmware onto the computer’s hard drive. Ensure that the printer is
connected to the host via the parallel port and powered ON. Then, depending upon the
model, use the DOS copy command to download the firmware to the printer:
•
Non-Display Models (.dlf extension)
copy filename.dlf lpt1/b
•
Display-Equipped Models (.zs extension)
copy filename.zs lpt1/b
 Note: Other programs (e.g., hyper-terminal, and certain Windows

Driver
programs) may also be used to download this file.