Maintenance—2213 Service
TROUBLESHOOTING EQUIPMENT
The equipment listed in Table 4-1, or equivalent equip
ment, may be useful when troubleshooting this instrument.
TROUBLESHOOTING TECHNIQUES
The following procedure is arranged in an order that
enables
checking
simple trouble possibilities before
requiring more extensive troubleshooting. The first four
checks
ensure
proper control
settings, connections,
operation, and adjustment. If the trouble is not located by
these checks, the remaining steps w ill aid in locating the
defective component. When the defective component is
located, replace it, using the appropriate replacement
procedure given under "Corrective Maintenance" in this
section.
Before using any test equipment to make measure
ments on static-sensitive, current-sensitive, o r voltage-
sensitive components o r assemblies, ensure that any
voltage o r current supplied by the test equipment
does n o t exceed the lim its o f the component to be
tested.
1. Check Control Settings
Incorrect control settings can give a false indication o f
instrument malfunction. If there is any question about the
correct function or operation o f any control, refer to
either the "Operating Instructions" (Section 2) in this
manual or to the instrument Operators Manual.
2. Check Associated Equipment
Before proceeding, ensure that any equipment used
w ith this instrument is operating correctly. V erify that
input signals are properly connected and that the inter
connecting cables are not defective. Check the power-input-
source voltages.
W A R N I N G
|
To avoid electric shock, disconnect the instrument
from the power-input source before perform ing
visual inspection.
3. Visual Check
Perform a visual inspection. This check may reveal
broken connections or wires, damaged components, semi
conductors not firm ly mounted, damaged circuit boards,
or other clues.
W A R N I N G
Dangerous potentials exist at several points through
o u t this instrument, i f i t is operated w ith the cabinet
removed, do n o t touch exposed connections o r
components
4. Check Instrument Performance and Adjustment
Check the performance o f either those circuits where
trouble appears to exist or the entire instrument. The
apparent trouble may only be the result o f misadjustment.
Complete performance check and adjustment instructions
are given in Sections 4 and 5 o f this manual.
5. Isolate Trouble to a Circuit
To isolate problems to a particular area, use the trouble
symptom to help identify the circuit in which the trouble
is located. Refer to the troubleshooting charts in the
"Diagrams" section as an aid in locating a faulty circuit.
6. Check Power Supplies
W A R N I N G
I
i t is recommended fo r safety that an isolation trans
form er be connected between the ac-power source
and the autotransformer whenever troubleshooting
is done in the Preregulator and the Inverter Power
Supply sections. Most autotransformers are N O T
isolation transformers
Check the power supplies whenever trouble symptoms
appear in more than one circuit. The correct output voltage
and ripple fo r each supply should be measured between the
supply test point and chassis ground (see Diagram 9 and its
associated circuit board illustration). When checking power-
supply circuitry utilizing common as the reference, use
either a DMM or an oscilloscope and observe the preceding
WARNING. If
power
supply voltages and ripple are w ithin
their listed ranges, the supply can be assumed to be
operating correctly. If any are outside their ranges, the
supply may be either misadjusted or operating incorrectly.
A defective component elsewhere in the instrument can
create the appearance o f a power-supply problem and may
also affect the operation o f other circuits.
7. Check Circuit Board Interconnections
A fte r the trouble has been isolated to a particular
circuit, again check fo r loose or broken connections
and heat-damaged components.
6-7
Summary of Contents for 2213
Page 1: ...Ttektronix 2213 OSCILLOSCOPE SERVICE IN S T R U C T IO N M A N U A L ...
Page 9: ...2213 Service 3827 01 viii The 2213 Oscilloscope ...
Page 30: ...Theory of Operation 2213 Service 3 3 Figure 3 1 Basic block diagram of the 2213 Oscilloscope ...
Page 67: ...Adjustment Procedure 2213 Service 5 2 ...
Page 139: ...Figure 9 4 2213 block diagram S105 ...
Page 140: ...a o m 7 x C O o z CHANNEL SWITCH AND VERTICAL OUTPUT ...
Page 141: ...2213 Service ...
Page 144: ...2213 ...
Page 146: ...2213 3827 20 R V FB 4982 C 4 ...
Page 147: ...S90I 4 5 ...
Page 148: ...CIRCUIT BOARD INTERCONNECTIONS K tv ra n m CIRCUIT BO ARD IN T E R C O N N E C T IO N S ...
Page 151: ......
Page 153: ...2213 3 K T i RtV D E C ...
Page 154: ......
Page 155: ...2213 Service 1 3 a 7 ...
Page 161: ...2213 Service n 3 a ...
Page 168: ...s RE 2213 ...
Page 169: ... CH 1 CH 2 VERTICAL PREAMPS ...
Page 175: ......
Page 177: ...TRIGGER ...
Page 180: ...fr ...
Page 181: ...f E V AUG I98Z SWEEP GENERATOR LOGIC ...
Page 184: ......
Page 188: ...2 2 1 3 lAlO FWTW m ain b o a rd ...
Page 190: ...i _____H M N XY AMPLIFIER HORIZ OUTPUT ...
Page 191: ...A 1 1 C 1 a i F 1 G 1 H 1 3 4 5 6 7 HO COM TO P 4 C C O 5 S I i S2T 2e R EV Dec I9BI 2 2 3 ...
Page 203: ...2 2 1 3 Service R887 ASTIG R870 GEOM C784 5ns TIMING R860 GRID BIAS ...
Page 207: ... ...
Page 216: ...I ...
Page 217: ...2213 OSCILLOSCOPE ...
Page 218: ......
Page 219: ...2213 OSrs ...
Page 225: ......