Tektronix TLA 704, Service Manual

Page: 67 / 144

Removal and Installation Procedures
6–12
TLA 704 Color Portable Mainframe Service Manual
4. Remove the five screws that attach the front panel control assembly to the
mainframe: two at the bottom of the assembly on the front of the instrument,
two on the top, and one on the right side. (See Figure 6–3 on page 6–11).
5. Lift the bottom edge of the front control panel assembly and rotate it upward
and off the front face of the mainframe.
6. Detach the cable connecting the front panel panel assembly to the interface
board.
NOTE . Procedures for removing the knobs, elastomeric keypad, and Front Panel
Control Board are found in “Procedures for Internal Parts,” which begins on
page 6–28.
Use the following procedure to reinstall the front panel control assembly:
1. Reattach the cable connecting the front panel control assembly to the
interface board.
2. Reinstall the front panel control assembly by first inserting the top edge and
then rotating it downward into position. (Be sure the tabs are engaged at the
top of the assembly. Insert the five screws that attach the front panel control
assembly to the mainframe: two at the bottom of the assembly on the front of
the instrument, two on the top, and one on the right side. (See Figure 6–3 on
page 6–11).
Flat Panel Display Assembly
You will need a screwdriver with a size T-15 Torx tip (Table 6–1, items 1 and 2,
page 6–6) to perform this procedure.
Use the following procedure to remove the flat panel display assembly:
1. Locate the parts to be removed in the locator diagram External parts,
Figure 6–1 on page 6–8.
2. Do the Front Cover and Trim Ring removal procedure, steps 1-5, on
page 6–9.
3. Set the mainframe with the bottom on the work surface and the front facing
you.
4. Remove the screws that attach the flat panel display assembly to the
mainframe: two screws at the bottom of the assembly on the front of the
Installation
Removal