Standard 2MB (8,300 PLUs), upgradable to 4MB (18,000) or 8MB (38,000).
Advanced service tasks, such as calibration, should be performed with a span switch or specific key combinations. Press M -> RE-ZERO -> M -> M . digi sm320 service manual
Use the open switch to lift the print head panel. Standard 2MB (8,300 PLUs), upgradable to 4MB (18,000)