Removal and Installation Procedures
TDS 420A, TDS 430A & TDS 460A Service Manual
6-27
b. Now, remove the line-cord retaining clamp by first unplugging the line
cord from its receptacle.
c. Next, grasp both the line cord and the retaining clamp and rotate them
90 degrees counter-clockwise.
4. Pull the line cord and clamp away to complete the removal.
5. Remove line fuse: Find the fuse cap on the rear panel. (See Figure 6--7.)
Now, remove the fuse cap by turning it counter clockwise using a flat-bladed
screwdriver, and remove the line fuse.
6. Reinstallation: Do in reverse steps 3 and 5 to reinstall the line fuse and then
the line cord.
1. Assemble equipment and locate modules to be removed:
a. Have handy a screwdriver with size T-15 and T-20 TorxR tips (Items 1,
2, and 3). If removing the EMI gasket at the inside rear of the cabinet,
also have handy a pair of needle-nose pliers (Item 7).
b. Make sure the oscilloscope front cover is installed; if it is not, install it
by snapping its edges over the trim ring.
c. Locate the rear cover and cabinet in the locator diagram Cabinet and
Front-Panel Mounted Modules, Figure 6--2 on page 6--16.
2. Orient the oscilloscope:
a. Pull out on both of the hubs on the cabinet handle to unlock it for
positioning. While holding the hubs unlocked, rotate the handle towards
the bottom of the oscilloscope.
b. Set the oscilloscope so its face is down with its front cover on the work
surface and its bottom facing you. Reference Figure 6--8 on page 6--28 as
you do the following steps.
3. Remove the front feet: If removing a front foot for replacement, use a pair of
slip-jaw pliers to firmly grip the foot, then pull with a turning motion to
remove. Reverse the process to install the replacement foot. If no other
modules are being serviced, skip to the end (step 8) of this procedure.
4. Remove r ear cover: Remove the four T-15 TorxR screws securing the rear
cover to the oscilloscope. Lift off the rear cover. If no other modules are
being serviced, skip to the end (step 8) of this procedure.
Front Cover, Rear Cover,
Cabinet, Rear EMI Gasket,
and Cabinet Handle and
Feet
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