Tektronix TLA 714, Руководство по обслуживанию

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Removal and Installation Procedures
TLA 714 Color Portable Mainframe Service Manual
4–33
Procedures for Internal Parts
Figure 4–17 on page 4–34 shows the locations of the internal parts of the
portable mainframe. Procedures for removing and replacing these parts are
presented in the following order:
H
Controller board
H
SO DIMMs (RAM)
H
Backplane board
H
Front panel control board
H
Front Panel interface board
H
Glidepoint Assembly and Elastomeric Keypad
Controller Board
You will need a screwdriver with a size T-15 Torx tip to perform this procedure.
Use the following procedure to remove the controller board:
1. Locate the controller board in the locator diagram Internal parts,
Figure 4–17 on page 4–34.
2. Set the mainframe so the bottom is on the work surface and the left side
faces you.
3. Do the Left Side Cover removal procedure, page 4–21.
4. Remove the eight screws securing the EMI shield to the chassis (see
Figure 4–17 on page 4–34), and then lift off the EMI shield.
5. Detach the three cables located near the bottom front corner of the controller
board.
6. Remove the center screw from the controller board.
7. Remove the two screws securing the controller board to the chassis at the
back panel.
8. Pull firmly on the rear panel until the controller board disconnects from the
backplane board.
Removal