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Maintenance—2213 Service
TROUBLESHOOTING
INTRODUCTION
Preventive maintenance performed on a regular basis
should reveal most potential problems before an instrument
malfunctions. However, should troubleshooting be required,
the follow ing inform ation is provided to facilitate location
o f a fault. In addition, the material presented in the
"Theory o f Operation" and the "Diagrams" sections o f this
manual may be helpful while troubleshooting.
TROUBLESHOOTING AIDS
Schematic Diagrams
Complete schematic diagrams are located on tabbed
fo ldo ut pages in the "Diagrams" section. The portions o f
circuitry that are mounted on each circu it board are
enclosed w ithin heavy black lines. Also w ithin the black
lines, near either the top or the bottom edge, are the
assembly number and name o f the circu it board.
Component numbers and electrical values o f compo
nents in this instrument are shown on the schematic
diagrams. Refer to the first page o f the "Diagrams" section
fo r definitions o f the reference designators and symbols
used to identify components. Im portant voltages and wave
form reference numbers (enclosed in hexagonal-shaped
boxes) are also shown on each diagram. Waveform illus
trations are located adjacent to their respective schematic
diagram, and the physical location o f each waveform test
point is shown on the appropriate circuit board illustration.
Circuit Board Illustrations
Circuit board illustrations (showing the physical location
o f each component) are provided fo r use in conjunction
w ith each schematic diagram. Each board illustration can
be found on the back side o f a foldout page, preceding the
schematic diagram(s) to which it relates. If more than one
schematic diagram is associated w ith a particular circuit
board, the board illustration is located on a left-hand
page preceding the diagram w ith which the board is first
associated.
Also provided in the "Diagrams" section is an illus
tration o f the bottom side o f the Main circuit board. This
drawing facilitates troubleshooting by showing the con
nection pads and the location of components that are
mounted on the top side o f the board. Probing o f Main
board component signals th at are inaccessible from the
top side can be achieved w ith o u t the necessity o f dis
assembling portions o f the instrument.
Waveform test-point locations are also identified on the
circuit board illustration by hexagonal-outlined numbers
th at correspond to the waveform numbers appearing on
both the schematic diagram and the waveform illustration.
Circuit Board Locations
An illustration depicting the location o f a circuit board
w ith in the instrument is shown on the fo ldo ut page
adjacent to the circuit board illustration.
Circuit Board Interconnection Diagram
A circu it board interconnection diagram is also provided
in the "Diagrams" section to aid in tracing a signal path or
power source between boards. The entire oscilloscope is
illustrated, w ith plug and jack numbers shown along w ith
associated pin numbers. The off-board components are also
shown, and the schematic diagram numbers on which
these components can be found are identified.
Power Distribution Diagram
A Power Distribution diagram is provided to aid in
troubleshooting power-supply problems. This diagram
shows service jumpers used to remove power from the
various circuit boards. Excessive loading on a power supply
by a circuit board can be isolated to the faulty board by
disconnecting appropriate service jumpers.
Grid Coordinate System
Each schematic diagram and circuit board illustration
has a grid border along its left and top edges. A table
located adjacent to each schematic diagram lists the grid
coordinates o f each component shown on that schematic.
To aid in physically locating a component on the respective
circuit board, this table also lists the circuit-board grid
coordinate o f each component.
Adjacent to each circuit board illustration is an alpha
numeric listing o f every component mounted on that
board. A second column in this listing identifies the
schematic diagram in which each component can be found.
These component-locator tables are especially useful when
more than one schematic diagram is associated w ith a
particular circuit board.
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Страница 1: ...Ttektronix 2213 OSCILLOSCOPE SERVICE IN S T R U C T IO N M A N U A L ...
Страница 9: ...2213 Service 3827 01 viii The 2213 Oscilloscope ...
Страница 30: ...Theory of Operation 2213 Service 3 3 Figure 3 1 Basic block diagram of the 2213 Oscilloscope ...
Страница 67: ...Adjustment Procedure 2213 Service 5 2 ...
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Страница 140: ...a o m 7 x C O o z CHANNEL SWITCH AND VERTICAL OUTPUT ...
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