Dräger Narkomed 2C Technical & Service Manual page 106

REPLACEMENT PROCEDURES (continued)
4.23 Keyboard
The keyboard is mounted on a pull-out tray assembly located just below the
table top of the anesthesia equipment cabinet. The keys are covered by a
polyurethane shield formed to fit over the keys. This shield is held in place by
a self-adhesive strip around its perimeter and can be replaced without
removing the keyboard from the tray. Figure 4-23 shows the keyboard
assembly sequence. Following are the steps needed for removal and
replacement of the keyboard.
4.23.1 Set the System Power switch to STANDBY.
4.23.2 Pull the keyboard tray out to its fully extended position, and carefully
remove the polyurethane shield by separating its adhesive perimeter
from the keyboard faceplate.
4.23.3 Remove the four faceplate retaining screws.
4.23.4 Remove the three drawer lip retaining screws and lift the faceplate
from the keyboard.
4.23.5 Disconnect the cable from the keyboard and carefully lift the
keyboard from the pull-out tray.
4.23.6 Carefully lower the replacement keyboard into the pull-out tray and
connect the cable.
4.23.7 Place the faceplate over the keyboard and install the four faceplate
retaining screws.
4.23.8 Install the three drawer lip retaining screws.
4.23.9 Test the movement of all keys to ensure that none are sticking. If any
are found to be sticking, loosen the four faceplate retaining screws
and the three drawer lip retainer screws, and reposition the faceplate.
Tighten all screws and retest the key action.
4.23.10 Fit a new polyurethane shield over the keys and press its adhesive
perimeter firmly onto the faceplate.
4.23.11 Perform the PMS procedure given in Section 6.
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NM2C