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Removal and Installation Procedures
6–10
TDS 684A, TDS 744A, & TDS 784A Service Manual
STOP. READ THESE GENERAL INSTRUCTIONS BEFORE REMOVING A
MODULE.
First read over the Summary of Procedures that follows to understand how the
procedures are grouped. Then read Equipment Required for a list of the tools
needed to remove and install modules in this oscilloscope.
If you are disassembling this oscilloscope for cleaning, go to the procedure
Disassembly for Cleaning on page 6–53.
If you are removing a module for service, begin by doing the procedure Access
Procedure (page 6–15). By following the instructions in that procedure, you
remove the module to be serviced while removing the minimum number of
additional modules.
The procedures are described in the order in which they appear in this section. In
addition, you can look up any procedure for removal and reinstallation of any
module in the Table of Contents of this manual.
H The Access Procedure on page 6–15 first directs you to the procedure(s) (if
any) that are required to access the module to be serviced, then it directs you
to the procedure to remove that module.
H Procedures for External Modules on page 6–16 are procedures for removing
modules the removal of which do not require internal access to the oscillo-
scope.
H Procedures for Outer-Chassis Modules on page 6–29 are procedures for
removing modules the removal of which require access internal to the
instrument but external to the chassis.
H Procedures for Inner-Chassis Modules on page 6–46 are procedures for
removing modules the removal of which require access internal to the
instrument and internal to the chassis.
H Disassembly for Cleaning on page 6–53 is a procedure, based on the removal
procedures just described, that removes all modules for cleaning. Instructions
for cleaning are found in Inspection and Cleaning, which begins this section.
NOTE. Read the cleaning procedure before disassembling the oscilloscope for
cleaning.
Equipment Required. Most modules in this oscilloscope can be removed with a
screwdriver handle mounted with a size T-15, TorxR screwdriver tip. Use this
General Instructions
Summary of Procedures