Chapter 7 299
Replacing Major Assemblies
A1 Front-Frame Assembly
11.Disconnect W1 (7) from A16J9.
12.Place the analyzer with the front frame forward and the top side
facing up on the work surface.
13.Disconnect W7 from A9J2.
14.Remove the five screws (9) that secure the front frame to the main
chassis sides. There are three screws on the right and two screws on
the left.
CAUTION To prevent damage to the semi-rigid cables, make sure they are
completely disconnected from the front panel connectors before
removing the front frame.
15.Separate the front frame from the main chassis and disconnect the
W4 ribbon cable from the A1A1 Keyboard assembly.
16.Remove the front-frame assembly.