User`s manual
have secured the remaining drive gear with a piece of tape during the printhead
installation, remove it at this time.
Reassemble the Gear Retainer to the Printer Frame
NOTE: Refer to procedure RK18450-001 MZ 320 Motor and Gears for more complete details.
5. Attach the two replacement Springs to each side of the Printhead Assembly and
the printer frame.
6. If so equipped, re-install the radio board into the printer frame.
7. Plug the Flex Circuit into the connector on the main logic board. Ensure the Flex
Circuit is pressed in completely and evenly into the Printhead connector, and that
the connector is latched on both sides to secure the Flex Circuit.
Install the Printer Frame Assembly
1. Partially re-assemble the printer frame assembly back into the lower housing,
leaving enough room to access the motor connector.
MZ 220 NOTE: If you have secured the drive gears with a piece of tape during the printhead
installation, remove it before re-assembling the printer frame.
2 Plug the motor connector into the Main Logic board.
3. Lower the printer frame into the printer, ensuring that the leads from the motor
do not become pinched between the printer frame and the Main Logic Board.
Secure the printer frame to the lower cover with two self-tapping screws.
4. Install the latch release button on the Printhead Assembly by dropping the
grooved sections on the side of the latch release over the pins in the Printhead.
The latch release button will “float” on the supports projecting from the
Printhead Assembly.
NOTE: The “flat “ side of the latch release button faces the Printhead.
Install the Upper Housing
1. Assemble the upper housing to the printer, capturing the latch release button.
NOTE: If the printer is equipped with a radio option: carefully plug the antenna cable back
into the antenna PCB at this time. Refer to the procedure for RK18408-001, MZ Series Antenna
replacement kit, for more details.
2. Secure the upper housing with (4) self-tapping screws. Two screws are inside the
media compartment and the remaining two are on the underside of the printer
near the control switches.
It is recommended that the complete unit test procedure be performed whenever a printhead
assembly has been replaced.
RMAN-MZS-002 • MZ Series Repair Procedures • Sect.2-14 •