Removal and Installation Procedures
6-44
TDS 420A, TDS 430A & TDS 460A Service Manual
1. Locate the modules to be removed: Find the modules to be removed in the
locator diagram Internal Modules, (Figure 6--3 on page 6--19) or in Figure
6--4 on page 6--22.
2. Orient the digitizing oscilloscope: Set the digitizing oscilloscope so its left
side is down, with its front facing to the left of you.
3. Remove the board supports: Depress the snap lock at the bottom end of the
board support and tilt the support outwards to remove from the chassis.
Repeat for the second and third board supports. See Figure 6--16.
4. Remove the D1 Bus: Grasp the D1 bus by its cable pull tab and pull to
unplug it from J1 of the Display assembly. Then grasp the cable and pull to
unplug it from J3 of the acquisition assembly and J2 of the DSP assembly.
See Figure 6--16.
5. Remove the jumper board assembly: Grasp the jumper board assembly by
opposite edges and pull out to unplug it from J102 of the attenuator
assembly and J9 of the acquisition assembly. Take care to pull the jumper
board straight out with a minimum of rocking motion. See Figure 6--16.
A08 Jumper Board
Board Support (3)
D1 Bus
Figure 6- 16: A08 Jumper board assembly, D1 Bus, and board supports removal
A08 Jumper Board
Assembly, D1 Bus, and
Board Supports
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