Tektronix TEKFAX ADA400A, Instruction Manual

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Maintenance
52
ADA400A Differential Preamplifier
CAUTION.
To prevent damaging internal components by means of electrostatic
discharge (ESD), perform all service at a static-free work station and wear a
grounded anti-static wrist strap.
Do not slide the internal module over any surface. Place internal module in
static-free bag for transportation away from work station.
Cleaning
To prevent damage to the ADA400A Differential Preamplifier, avoid using
chemicals that contain benzine, benzene, toluene, xylene, acetone, or similar
solvents.
Do not immerse the ADA400A Differential Preamplifier or use abrasive
cleaners.
Dirt on external surfaces may be removed with a soft cloth dampened with a
mild detergent and water solution, or isopropyl alcohol.
NOTE
. Certain areas of the circuit board are sensitive to surface contamination.
Avoid touching the surfaces of the circuit board. Handle the circuit board by the
edges. If the circuit board is contaminated, wash the board with Isopropyl
Alcohol and rinse with warm deionized water.
Replacement Procedures
Refer to the procedures in this section before replacing any part on the
ADA400A Differential Preamplifier. For a list of all customer replaceable parts,
see the
Replaceable Parts section that begins on page 59 and the exploded view
on page 63.
Periodically check to see that each of the interface pins move freely and fully
extends out of the interface. If any pin fails to move freely and fully extend, it
should be replaced.
To remove a TEKPROBE interface pin, firmly grasp the pointed tip with pliers
and pull the pin out of the connector. See Figure 17.
No tools are required to install a replacement pin. Insert a new pin into the
connector socket as far as possible using finger pressure. If necessary, seat the
pin into the connector by pressing the tip gently but firmly against a hard
surface, such as a wood block or table top.
Replacing TEKPROBE
Interface Pins