Figure 7-6. Inverter circuit subassembly.
Section II. ADJUSTMENT
Set AN/PPS-5 when they are being tested
7-3. Test Equipment Required
by the MK-980/PPS-5. Adjustment is
The only test equipment required for adjust-
affected by means of potentiometers R46, R48,
R49, and R51, located on a component board
special tools are needed.
the test panel. The potentiometer functions, the
7-4 Adjustment Instructions
voltages to be established, and the test points
for measurement are given in the chart below.
The CRT TEST circuit is the only area of the
M K - 9 8 0 / P P S - 5 requiring preset adjust-
W a r n i n g : The voltages at these readout
ment. The adjustments consist of voltage set-
points are extremely high. Refer to paragraph
tings for controlling the brightness and focus
procedure and test equipment needed
of the two cathode-ray tubes (crt) of Radar
to check these voltages.