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Upgrading and migrating
Hardware
Available internal options
Flash memory
Font cards
Firmware cards
Forms and Bar Code
IPDS
PRESCRIBE
Internal solutions port
RS-232C Serial Interface Card
Parallel 1284-B Interface Card
MarkNet
TM
N8230 Fiber Ethernet
Note: The internal solution port is supported only in Lexmark MX521 and MX522 printer models.
Accessing the controller board
CAUTION—SHOCK HAZARD: To avoid the risk of electrical shock, if you are accessing the controller
board or installing optional hardware or memory devices sometime after setting up the printer, then turn
the printer o, and unplug the power cord from the electrical outlet before continuing. If you have any
other devices attached to the printer, then turn them o as well, and unplug any cables going into the
printer.
1 Turn o the printer.
2 Unplug the power cord from the electrical outlet, and then from the printer.
3 Using a flat-head screwdriver, open the controller board access cover.
Warning—Potential Damage: Controller board electronic components are easily damaged by static
electricity. Touch a metal surface on the printer before touching any controller board components or
connectors.
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  • how do you manually answer a fax call on the Lexmark ade421? Submitted on 2-2-2022 at 19:06

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Others manual(s) of Lexmark MX421

Lexmark MX421 User Manual - German - 260 pages

Lexmark MX421 User Manual - Dutch - 255 pages


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