Brother International MFC 9420CN Users Manual - English - Page 172
Installing additional memory, could result in electric shock hazard.
UPC - 012502614074
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Installing additional memory 1 Turn off the machine's power switch. 2 Unplug first the telephone line cord from the telephone wall jack, and then unplug the power cord from the AC power outlet. WARNING Make sure you turn the machine OFF and unplug the machine before you install or remove the SO-DIMM. Installing optional accessories without unplugging the machine could result in electric shock hazard. Optional accessories 3 Unscrew the screw holding the side cover, and then slide the side cover to remove it. 4 Unscrew the screw holding the metal shield plate, and then remove the metal shield plate. 5 Unpack the SO-DIMM and hold it by the edges. CAUTION SO-DIMM boards can be damaged by even a small amount of static electricity. Do not touch the memory chips or the board surface. Wear an antistatic wrist strap when you install or remove the board. If you do not have an antistatic wrist D strap, keep touching the bare metal on the machine. D - 4