Tektronix DPO3000 Series, Service Manual

Page: 44 / 79

Maintenance
List of Modules The Replaceable Parts List chapter provides a list of all replaceable modules. Any
replaceable component, assembly, or part is referred to as a module.
WARNING.
Only quali fi ed personnel should perform service procedures. Before
doing this or any other procedure in this manual, read the General Safety
Summary and Service Safety Summary located at the beginning of this manual.
Also, take precautions to prevent ESD damage to electrical components. (See
page 4-1, Preventing ESD.)
Tools Required
You will need the following tools to remove and replace all the modules in the
instrument.
Torque-limiting screwdriver, 12 in-lb (1.3 N-m) range with TORX T15 tips.
If you are using a magnetic screwdriver with interchangeable bits, the T15 bit
must be a long bit, at least 5 cm. (2 in) overall length.
Screwdriver with
1
/
8
inch fl at blade
3
/
16
inch nut driver
5
/
16
in. wrench
5
/
8
in. wrench
Needle-nose pliers
X-ACTO knife or other razor knife
Removal Procedures
Beginning with the rear case, remove modules as necessary to gain access to the
module you need to remove.
WARNING.
Before doing any procedure in this subsection, disconnect the power
cord from the line voltage source. Failure to do so could cause serious injury
or death.
CAUTION.
When removing or installing the keypad, do not touch the switch
contacts with your fi ngers. The oils on your fi ngers will degrade or damage the
switch contacts. To help prevent damage to the keypad, use cotton gloves when
removing or installing the keyboard pad.
CAUTION. To avoid damage to the front panel standby/on switch assembly, do not
set the display module assembly on a work surface. Sliding the oscilloscope over
the edge of the work surface could break off the on/standby switch assembly.
4–6 MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual