Primary Test Load
The test load illustrated below may be used to test the
operation of the inverter with the output transformer
(T1060) and drive transistors (Q1060 and Q1070) discon-
nected.
Connect the + lead of the load to the lifted end of
W1060 (see procedure in flowchart at right) and the —
lead to the sources of Q1060 and Q1070. A schematic
diagram of the
load,
showing the associated Tektronix
part numbers, is given below.
PRIMARY TEST LOAD
(152-0066-00)
« 9 »— ft 0
+
150S2,
1W
(303-0151-00)
750mA
(159-0042-00)
3.3*if
(290-0806-00)
-o-
3 EA. 3.5k<2, 20W
(308-0032-00)
+ 5 V
D
Test Load
Some load is required for the Inverter to run. When the
Power Supply module is removed from the instrument or
when the Regulator Board is disconnected from the
Inverter Board's output, the test load described below may
be used to check the operation of the Inverter.
NOTE
Each of the Regulators requires a load to regulate
properly; this loading is not provided by the +5 V
D
load.
TEST LOAD. Connect a 24), 25 watt resistor (Tek-
tronix part number 308-0205-00) from the +5 V
D
pins
of J303 and J232 (on the Inverter Board) to ground.
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