TM 11-5841-287-30
Figure 3-10. Test setup for circuit card testing utilizing cable W3.
(2) Insert A5/A6 program card (SM-A-
the down position
942360) into the card reader slot on the digital tester
NOTE
(3) On the control Interface unit, set the
The TEST red indicator lamp for the
POWER ON/OFF switch to ON and the MODE SELECT
switch selected will be illuminated while
switch to MODULE TEST ENC.
Verify that the
the test is in progress
MODE/POWER MODULE TEST ON green indicator
(8) Imitate a second test by repeating step
lamp is illuminated.
(7) above. Verify that the green PASS indicator lamp on
NOTE
the digital tester illuminates at the completion of the
The MODE/POWER SHORT red
second test
indicator lamp will be illuminated at this
(9) Set the TEST RATE PER SEC switch
time, but will be extinguished when the
on the digital tester to 1M
digital tester UUT POWER switch is set
(10) Refer to figure 3-11 for test point
to the on position in the following step
locations and connect channel A of the oscilloscope
(4) On the digital tester, set the POWER
between test points U44-15 and J1-22 (gnd)
and UUT POWER switches to the on positions (up)
(11) Adjust oscilloscope for positive trigger,
Verify that the red indicator lamps for these switches are
2V/division vertical, and 10 microseconds/division
illuminated and the MODE/POWER SHORT lamp is off
horizontal
(5) On the digital tester, load the program
(12) Depress the CONT TEST switch on
on the A5/A6 program card into the digital tester memory
the digital tester Verify that the display on channel A of
by pressing the PROGRAM ENTER momentary switch
the oscilloscope consists of both logic "1"s and "0's
to the down position
(13) Set the POWER switches on the
equipment to their off positions. Remove the circuit card
under test and the program card from the test setup
NOTE
3-30. Testing Video Control 2A7
The PROGRAM ENTER red indicator
a. Test Setup Connect the equipment as
lamp will be illuminated during the
program enter period
to testing the circuit card, set the equipment controls as
(6) Verify that the READY/ERROR white
follows:
indicator lamp on the digital tester illuminates when the
Control
Setting
program has been entered
Control Interface unit
(7) Initiate a complete test sequence by
POWER ON/OFF
OFF
pressing either one of the TEST momentary switches to
3-36
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