TB 9-6625-336-35
Figure 4. Horizontal sweep - equipment setup,
(4) Maintain 2.83 V p-p reference on oscilloscope for (5) below. Horizontal deflection
on TI will not be less than one-half diameter of oscilloscope display.
(5) Repeat (3) above at frequencies of 20 Hz, 200 Hz, 2 kHz, and 5 kHz.
b. Adjustments. No adjustments can be made.
a. Performance Check
NOTE
Do not perform power supply check if all other parameters are
within tolerance.
(1) Connect differential voltmeter (A2) between ground and junction of C41 and bus
bar (fig. 2), using test lead (B8). If voltmeter does not indicate between 231 and 249 V dc
for Models 540B, CM77, and CM77A, except models with serial number between 129-00101
and 129-00597; or between 216 and 234 V dc for Models 540A and 540B with serial number
between 129-00101 and 129-00597, perform b(1) below.
(2) Vary autotransformer (A1) output between 105 and 125 V ac and repeat (1)
above.
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