Tektronix 7613 User Manual

Ordering Parts. When ordering replacement parts from
Tektronix, Inc., include the following information:
1. Instrument type.
2. Instrument serial number.
3. A description of the part {if electrical, include circuit
number}.
4. TEKTRONIX part number.
Soldering Techniques
Disconnect the instrument from the power source
before soldering.
The reliability and accuracy of this instrument can be
maintained only if proper soldering techniques are used
when repairing or replacing parts. General. soldering
techniques which apply to maintenance of any precision
electronic equipment should be used when working on this
instrument. Use only 60/40 rosin-core electronic-grade
solder, The choice of soldering iron is determined by the
repair to be made. When soldering on circuit boards, use a
35- to 40-watt pencil-type soldering iron with a 1/8-inch
wide, wedge-shaped tip. Keep the tip properly tinned for
best heat transfer to the solder joint. A higher wattage
soldering iron may separate the wiring from the base
material. Avoid excessive heat; apply only enough heat to
remove the component or to make a good solder joint.
Also, apply only enough solder to make a firm solder joint;
do not apply too much solder.
For metal terminals {e.g., switch terminals, potenti-
ometers, etc.) a higher wattage-rating soldering iron may be
required. Match the soldering iron to the work being done.
For example, if the component is connected to the chassis
or other large heat-radiating surface, it will require a
75-watt or larger soldering iron. The pencil-type soldering
iron used on the circuit board can be used for soldering to
switch terminals, potentiometers, or metal terminals
mounted in plastic holders.
After soldering is completed, clean the area around the
solder connection with a flux-remover solvent. Be careful
not to remove any information printed in the area.
Maintenance—7613/R7613 Service
Component Replacement
Disconnect the instrument from the power source
before replacing components.
General. The exploded-view drawings associated with
the Mechanical Parts List (located at rear of manual) may
be helpful in the removal or disassembly of individual
components or sub-assemblies.
Circuit Board Replacement. If a circuit board is damaged
beyond repair, the entire assembly including all soldered-on
components, can be replaced. Part numbers are given in the
Mechanical Parts List.
NOTE
Even though unwired boards are available without
components, use of the completely wired replace-
ment board is recommended due to the large number
of components mounted on most of the boards.
Most of the circuit boards in this instrument are
mounted on the chassis; pin connectors are used for
interconnection with other circuits. Use the following
procedure to remove the chassis-mounted circuit boards
(removal instructions for the exceptions will be given later).
A. CHASSIS-MOUNTED BOARDS.
1. Disconnect any pin connectors on the board or
connected to other portions of the instrument. Note the
order of these connectors so they can be correctly replaced.
2. Remove the securing screws.
3. Remove the board.
4. To replace the board, reverse the order of removal.
Match the arrows on the multi-pin connectors to the arrows
on the board. Correct location of the pin connectors is
shown in the circuit board illustrations in the Diagrams
section.
B. TRIGGER SELECTOR AND VERTICAL INTERFACE
CIRCUIT BOARD REPLACEMENT,
The Trigger Selector and Vertical Interface circuit
boards plug onto the front of the Main Interface circuit
board. Use the following procedure to replace either board.
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7613

Tektronix 7613 Specifications

General

Brand	Tektronix
Model	7613
Category	Test Equipment
Language	English