Repair And Adjust The Circuit - Tektronix 11A52 Service Manual

Maintenance
Diodes
A diode can be checked for an open or shorted condition by measuring the resistance between terminals with an
ohmmeter on a scale having a low internal source current, such as the Rx 1 k scale. The resistance should be
very high in one direction and very low in the other direction.
Resistors
Check resistors with an ohmmeter. Resistor tolerances are given in Section 5, Replaceable Electrical Parts.
Normally, resistors need be replaced only if the measured value varies widely from the specified value.
Capacitors
A leaky or shorted capacitor can best be detected by checking resistance with an ohmmeter on the highest scale.
Do not exceed the voltage rating of the capacitor. The resistance reading should be high after initial charge of
the capacitor. An open capacitor can best be detected with a capacitance meter or by checking that the
capacitor passes ac signals.
7. Repair and Adjust the Circuit
If any defective parts are located, follow the replacement procedures given under Component Replacement in
this section. Check the performance of any circuit that has been repaired or that has had any electrical
components replaced. Adjustment of the circuit may be necessary.
3-24 11A52 Extended Service Manual
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