Tektronix TLA 720, Руководство по обслуживанию

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Removal and Installation Procedures
TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual
4–5
Module Removal and Replacement
The following procedures describe how to remove and replace benchtop chassis
and expansion chassis modules.
Removing the Blower Assembly
To remove the blower assembly, refer to Figures 4–2, 4–3 and Figure 4–4 while
performing the following steps:
1. From the back of the chassis, loosen the five captive screws including the
safety ground (refer to Figure 4–2 for the screw locations).
2. Remove the cable cover.
3. Unplug the blower cable and set the blower assembly aside on a clean
working surface.
4. To remove the blower, remove the ten screws holding the shroud part of the
blower assembly to the chassis part of the assembly. Set the shroud aside.
There are three screws on each side and four on the bottom. See Figure 4–4.
5. Remove the two screws at the top of the blower.
6. Remove the four screws that hold the blower to the chassis part of the blower
assembly.
7. For convenience, replace the two screws from step 5 onto the top of the
blower.