Lexmark MX71 series, Service Manual, Page: 266 / 807

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Do not place the ESD-sensitive part on the machine cover or on a metal table; if you need to put down the ESD-
sensitive part for any reason, first put it into its special bag.
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Machine covers and metal tables are electrical grounds. They increase the risk of damage, because they make a
discharge path from your body through the ESD-sensitive part. (Large metal objects can be discharge paths without
being grounded.)
•
Prevent ESD-sensitive parts from being accidentally touched by other personnel. Install machine covers when you
are not working on the machine, and do not put unprotected ESD-sensitive parts on a table.
•
If possible, keep all ESD-sensitive parts in a grounded metal cabinet (case).
•
Be extra careful while working with ESD-sensitive parts when cold-weather heating is used, because low humidity
increases static electricity.
Controller board/control panel replacement
This procedure should be followed only if both the controller board and the operator panel fail. If you need to replace
only one of the FRUs, follow the startup procedure described in the FRU’s removal procedure.
CAUTION—POTENTIAL INJURY
The lithium battery in this product is not intended to be replaced. There is a danger of explosion if a lithium
battery is incorrectly replaced. Do not recharge, disassemble, or incinerate a lithium battery. Discard used
lithium batteries according to the manufacturer's instructions and local regulations.
Warning—Potential Damage: If the operator panel and the controller board are being replaced at the same time,
replace the parts in this order to avoid damage to the machine.
1
Replace the controller board first.
Note: Do not replace the new operator panel and controller board in the machine at the same time.
2
After installing the new controller board, and before installing the new operator panel, start the printer into
diagnostics mode.
3
After the printer has completed startup, turn off the printer and replace the operator panel.
Note: If the operator panel display has failed, the printers’ startup cycle is complete when the driver motor and
fans shut down, and the machine is quiet.
4
After installing the new operator panel, start the printer into diagnostics mode, and allow the printer to go through
a complete startup cycle and the display to go to Ready.
5
If the problems persist, leave the new operator panel in the machine, place the old controller board back in the
machine, and start it up. After the machine startup, shut down the machine, and install the new controller board.
After installing the new controller board, restart the machine, and let it go through the startup cycle.
After this procedure is completed successfully, there is no need to adjust any settings.
If the above procedure fails, you must contact the technical support center for further instructions.
eSF solutions backup
If a technician needs to replace the RIP board, the steps below should be taken to backup the eSF solutions and settings:
1
POR the printer into invalid engine code mode.
2
Open a Web browser, and navigate to the printer Web page.
3
Navigate to Settings, and click the link.
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Repair information
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