Removal and Replacement Procedures 3-43
Card Guide Frame
Removal 1. Set the power switches of the attached devices to Off.
2. Set the power switches of the system unit to Off.
3. Unplug the power cord from the electrical outlet.
4. If the system unit has a rear cover, do the Rear Cover removal procedure on page 3-3.
5. Do the Top Cover removal procedure on page 3-4.
6. Record the location of the notch in the foam and remove the foam from the top of the fan.
7. For all models except 380, 390, 39H, and 397, do the Front Cover removal procedure on
page 3-6.
8. Do the Three-Digit Display removal procedure on page 3-55.
9. Push the battery through the hole in the card guide frame.
10.On some system units, the key lock cable will have to be disconnected.
11.Disconnect the cable for the front fan.
12.On models 380, 390, 39H, and 397, record the adapter card and cable positions, and
unplug the cables.
13.On models 380, 390, 39H, and 397, remove the memory, CPU, and adapter cards.
14.Remove the three mounting screws and the card guide frame.
15.Separate the air duct (not on all system units) and the adapter card down stop from the
card guide frame.
16.Do the “Front Fan” removal procedure on page 3-46.
Note: The illustration is of the newest model.
Card Guide Frame
(early models)
Adapter Card
Down Stop
Notch
Duct
(not on early models
320, 32H and 32E)
Card Guide Frame
(Model 397)