MarkVision Professional’s ON and OFF DST option is preventing proper DST mode configuration on new printer models.
Specifically, the Automatic setting is absent from MVP’s DST option settings. 

Older Models

Printer DST Setting	Effect
ON	Automatically adjusts for DST.
OFF	Turns off the automatic adjustment of DST.

• Click here for the web page view.      

Newer Models

Printer DST Setting	Effect
Automatic Mode	Automatically adjusts for DST.
Manual Mode	Allows for end-user control of DST settings.
Daylight Savings (Yes or No) - Valid for Manual Mode	Yes - enables DST, No - disables DST

• Click here  for a web page view.
• Click here for a C912 web page view.
  NOTE:  The C910/912 lacks the Manual Mode setting.  As a result, the C910/912 is represented as an older device within MVP.       

1. Download the file ENUS24516_DSTOption_v1_1.zip and unzip it.
2. Install the plug-in on your MVP server.  (For information on how to install MVP plug-ins, click here.)
3. Reboot your MVP server. (Click here for instructions.)
   MVP screen shots after plug-in installation
   

   • C912:  Click here.
   • T644:  Click here.

This plug-in:

•  establishes the absent Automatic Mode DST setting in MVP.
•  differentiates between old and new printers.
•  alters the viewable and selectable MVP DST options.

Please contact Lexmark Technical Support for additional assistance.  NOTE:  When calling for support, you will need to know your printer model type and serial number. 
Please call from near the MVP server in case the technician asks you to perform a task involving this software utility.