After installing the upgrade you must return the 220e image processor board and its I/O board to Tektronix. Tools required s s #1 POSIDRIV� screwdriver Antimstatic mat 006-7056-00 Static precautions s Leave the printer plugged into its power outlet. This preserves a ground path for static discharges. Touch the printer's bare metal frame often to discharge static electricity from your body. Handle the circuit board(s) by their edges only. Do not lay the board(s) on a metal surface. s s s s Make the least possible movements to avoid generating static electricity. Avoid wearing nylon or polyester clothing; they generate static electricity. s Copyright � 1994 by Tektronix, Inc. All rights reserved. 063-1442-AB 4681FXI � Upgrading a Phaser 220e to a Phaser 220i 1. Power down the printer. Leave the power cord plugged in to provide a ground path for static discharges. Remove the interface cables. Remove the top-rear and rear plastic cabinet panels. Remove the screws securing the I/O board (and its metal rear panel plate)to the card cage. Disconnect the I/O board's ribbon cable. Remove and save the I/O board (and rear plate) to return to Tektronix. I/O board 2 3 4 2 4681FXI � Upgrading a Phaser 220e to a Phaser 220i 5. Remove the card cage top (3 screws). Flip over the hinged card cage top. Lift out the 220e image processor board. Save the board to return to Tektronix. 3 4 6 8699-38 3 4681FXI � Upgrading a Phaser 220e to a Phaser 220i 8. If installed, remove the RAM SIMM installed in J6 of the 220e image processor board...