Atari CX 5200 Field Service Manual page 134

5)
Verify that a missile
fires
each time
either of the
fire
buttons (Trigger)
closest to the
cue
ball
is
pressed.
Be
sure to test both
left
and
right fire
buttons.
If
a failure occurs, go to
Flowchart M, page 7-25
of
this
section.
6)
Disconnect
the trakball
from
the
Model
5200 console. Insert one probe of a
Digital
Voltmeter
into
pin
14
of
the trakball player port
plug.
Insert the
other probe into pin 15.
When
either of the outside (Softfire) firebuttons
is
pressed,
the
Digital
Voltmeter
should
read
less
than 200
ohms. Perform
this
test
for
both
of
the outside firebuttons.
If
a
failure
occurs, go to
Flowchart M, page
7-25 of this section.
CX5200
Field
Service Manual 7-9