4. Replacement and Adjustment
Beforehand
• Before installing options, please do the following:
• If there is a fax unit in the machine, print out all messages stored in the memory, the lists of user-
programmed items, and the system parameter list.
• If there are printer jobs in the machine, print out all jobs in the printer buffer.
• Turn off the main power switch and disconnect the power cord, the telephone line, and the network
cable.
• Always touch a grounded surface to discharge static electricity from your hands before you handle
SD cards, printed circuit boards, or memory boards.
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