Cleaning Instructions; Obtaining Replacement Parts - Tektronix DC 5010 Anleitung

Clean the contact fingers on the relay armature by lightly
brushing the contacts with a brush dipped in isopropyl
alcohol.
To remove the relay armature from the relay, obtain a
wire or tool with a diameter less than 0.040 inch, such as a
paper clip. Before removing the armature, mark the orienta-
tion of the armature to the housing. Orientation is important
for proper operation. Place the tool in the slot on the side of
the housing and gently lift the relay armature. (See Fig. 5-2.)
Fig. 5-2. Method of removing magnetic latch relay armature.
Clean the interior of the relay, around the pole pieces,
with isopropyl alcohol. The interior of the relay must be com-
pletely dry before reinstalling the armature. Use air to dry
excess alcohol from the housing.
NOTE
Do not spray contact cleaners of any type on the re-
lays or the board contacts. Any foreign material, in-
cluding lubricants, can cause faulty operation.
Cleaning Instructions
This instrument should be cleaned only as often as oper-
ating conditions require. Accumulation of dirt on compo-
nents acts as an insulating blanket and prevents efficient
heat dissipation that can cause overheating and component
breakdown.
C A U T I O N
a
Avoid the use of chemical cleaning agents that might
leave a film or damage the plastic material used in this
instrument. Use a nonresidue type of cleaner; prefer-
ably, isopropyl alcohol or totally denatured ethyl alco-
hol. Before using any other type of cleaner, consult
your Tektronix Service Center or representative.
Exterior. Loose dust accumulated on the front panel can
be removed with a soft cloth or a small brush. Dirt that
remains can be removed with a soft cloth dampened with a
mild detergent and water solution. Abrasive cleaners should
not be used.
Interior. Dust in the interior of the instrument should be
removed occasionally, due to its electrical conductivity un-
der high humidity conditions. The best way to clean the inte-
rior is to blow off the accumulated dust with dry, low
pressure air then use a soft brush. If further cleaning is re-
quired, use a mild detergent and water solution, flushing well
with clean water.
Do not clean the circuit board with water, air, or any
solvent, unless the relays are removed first. Any dirf
forced or carried under the contacts can cause inter-
mittent opera tion. Circuit boards and components
must be dry before applying power to prevent damage
from electrical arcing.
Drying can be accomplished with dry, low-pressure air or
by placing in an oven at 40°C to 60°C for approximately
four hours.
After making minor board repairs, cleaning is best ac-
complished by carefully flaking or chipping the solder flux
from the repaired area.
lsopropyl alcohol can be used to clean major repairs to
the circuit board; however, flush the board well with clean,
isopropyl alcohol. Make certain that resin or dirt is carefully
removed from the board.
Obtaining Replacement Parts
Electrical and mechanical parts can be obtained through
your local Tektronix Field Office or representative. However,
many of the standard electronic components can be ob-