How To Install The Main Board; Figure 3-5 How The Main Board Fits In The Frame - Tektronix 11A52 Service Manual

Maintenance
( How to Install the Main Board
(
1. Set the 11A52 on its side with the pushbuttons up.
2. Carefully insert the Main board between the frames until the plastic rear panel contacts the top and
bottom frames. The board fits on the top of the center ridges on the top and bottom frames. See Figure 3-5.
3. Use a Torx T-15 screwdriver to start the four screws that fasten the rear panel to the top and bottom
frames.
4. Use a Torx T-7 screwdriver to install the four screws that fasten the heat sink to the top and bottom
frames.
5. Use a Torx T-9 screwdriver to install the six screws and nut blocks that clamp the Main board to the top
and bottom frames.
6. Plug the Main board assembly into its socket. Be carefully not to bend its pins.
7. Connect the cable from the Front Panel board to its connector on the Main board.
8. Tighten the four screws that you started in step 3.
9. If you installed a new board without attenuators, install attenuators as outlined in "How to Install an
Attenuator Assembly."
CIRCUIT
BOARD
TOP OF
6.
PLUG-IN ...
7391-308
Figure 3-5. How the Main Board fits in the Frame.
11A52 Extended Service Manual
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