User`s manual

Installation Instructions
This kit includes the parts necessary to install the RK18409-001 Main Logic Board
Kit in the MZ 220 or MZ 320 model printer. Read these instructions thoroughly
before attempting to install this kit.
Reference Materials
UMAN-MZS MZ Series Users’ Guide
Tools Required
• #1 Phillips head screwdriver
• Slotted head screwdriver.
Cautions
Caution • This installation must be performed only by a qualified service technician.
Unless otherwise specified, always turn the printer off before performing any repair procedures.
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).
All electronic components must be placed on an ESD protective tray. If stored, any electronic
components must be placed in antistatic bags
The following procedure can only be performed by Zebra authorized service organizations using
approved equipment and software.
Remove the Upper Housing
1. Turn the printer off, and remove the battery pack. Remove any media from the
printer.
2. Remove and retain the four screws retaining the upper housing to the printer
frame. Two screws are inside the media compartment and the remaining two are
on the underside of the printer near the control switches.
3. Remove the upper housing. Remove and retain the latch release button. If the
printer is equipped with a radio option, you may wish to unplug the antenna
cable from the antenna card mounted in the upper cover.
Remove the Printer Frame
1. Remove the two screws in the media compartment securing the printer frame
assembly to the lower housing.
2. Carefully lift the printer frame away from the lower housing.
NOTE FOR MZ 220 ONLY: The two drive gears that mesh with the motor on the printer frame will
become loose. You can temporarily secure them in place with a piece of tape.
3. Unplug the motor connector and the flex circuit from the printhead to the Main
RMAN-MZS-002 • MZ Series Repair Procedures • Sect.2-22 •
MZ SERIES MAIN LOGIC BOARD
REPLACEMENT KIT RK18409-001