eto
https://www.mediafire.com/file/fvl1bc9i3djif7d/Global_Engineering_Economics-_Financial_Decision_Making_for_--_Niall_M__Fraser%252C_Elizabeth_M__Jewkes%252C_Irwin_Bernhardt%252C_May_--_4th_Revised_edition%252C_2009.pdf/file
eto, check mo kung parehas lang sa physical, (kung may pagkumparahan ka). meron kasi sya text na 'of a single variable', pero ang alam ko parehas lang sila.
https://drive.google.com/file/d/19Y84g9WfZ1o1nw5mKrgsoO5JEk9Z2Z5Z/view?usp=sharing
If Ink waste pad/inkbox full:
Step 1: Power off then power on the printer
Step 2: Press 'Menu' and Mono button then press 4x for the 'Arrow up' untill Machine Err 4600 displays on the screen.
Step 3: Press arrow up until displays the number 8 then press 'OK' it should display the MAINTENANCE 8...