Removal and Installation Procedures
WFM700 Series Waveform Monitors Service Manual 4--9
Use this procedure to open the chassis, allowing access to internal modules and
components. Removal procedures required before starting:
Read the entire removal procedure before proceeding.
1. Place the instrument on a static-safe work surface. Be sure to follow safe
handling procedures to avoid electrostatic damage to the instrument or
module (refer to Preventing ESD on page 4--2).
2. Loosen three attaching screws (T-10) along the left side and three screws
along the right side of the chassis cover (see Figure 4--2). Loosen the screws
sufficiently to free the cutouts in the cover (about 3 turns); you do not need
to remove the screws from the side of the chassis.
3. Remove two screws (T-10) from the front of the chassis cover (see
Figure 4--2). Save the screws for reinstallation.
4. Loosen the attaching rear-panel screws (T-15) at the top of the module rear
panels in slots 2 through 6 (see Figure 4--2 for screw locations and
Figure 4--6 for slot numbering). Loosen the screws sufficiently to free the
cutouts in the cover (about 3 turns). It is okay to remove the screws, but be
sure to save them for reassembly.
5. Remove a screw (T-15) from slot 1 and from the power supply (see
Figure 4--2 for screw locations and Figure 4--6 for slot numbers).
6. Lift the cover off the instrument. The rear-panel screws that you loosened
will remain in the cover.
Replace the chassis cover as follows:
1. Insert the lip on the rear of the cover inside the rear panel, lining up the
screws in the cover with the rear panel cutouts.
2. Line up the screws along the left and right sides of the cover with the cutouts
on the sides of the chassis.
3. Install the two screws that you removed across the front edge of the chassis
cover and the two screws that you removed from the slot 1 and power supply
4. Hold the cover on the chassis tightly, applying pressure to compress the foam
underneath. Tighten the screws along the right and left sides of the chassis.
(If it is easier for you, turn the instrument chassis on its side while tightening