Datamax-O'Neil E-Class Mark III User Manual

92-2594-01 Rev.A

Printhead Bracket and Screw Upgrade

Overview

Print quality issues have been identified when printing on tag stock with a thicknesses over 7 mil, or when back feeding
small labels shorter than .5" This Printhead Screw and Printhead Mounting Bracket kit has been developed to correct this
issue. This document describes the installation of this upgrade kit for the E-Class Mark III printer. After verifying the
contents of the kit and the tools needed, follow the steps below to install the upgrade.

For your safety and to avoid equipment damage, always turn ‘Off’ power and unplug the printer’s power

CAUTION

cord before beginning this installation.

Kit Information

The kit is compatible with the following E-Class Mark III models and were cut into production as described in the table
below:

Printer Model Serial Numbers

Basic Printer serial# R21652265 and later

Advanced Printer serial# R20252001 and later

Pro Printer serial# R21652001 and later

Pro+ Upgrade not required. All Pro+ models already contain this upgrade.
There are two kits available for field upgrade if necessary. The kits and their contents are listed below.
DPR78-2913-01

1 Printhead Bracket
1 Printhead Screw
1 E-Clip

DPR78-2913-10 (10Pack)

10 Printhead Brackets
10 Printhead Screws
10 E-Clips

Tools Required

Needle Nose Pliers
Small Flathead screwdriver
E-Clip Installation Tool, McMaster-Carr part# 5728A2 or similar



Only qualified service personnel should install this upgrade.

1.) Open the printhead/ribbon carrier assembly by sliding the green button downward (Fig 1)

Figure 1

2.) Gently push tabs outward and drop printhead mechanism assembly as shown (Fig 2)

Leave springs in place

Figure 2