DIAGNOSE MOTOR / SENSOR FAULT AND REPLACEMENT PROCEDURE
Step # 1
Identifing molex concetions for Cup assembily
The molex connections shown in this
step can been seen by opening the
side access door under the side cup
assembly. There are three bundles of
three wires on each side of the main
cup assembly. The wires can be
identified by their molex conectors,
the four pin goes to the ball sensor,
the three pin molex goes to the cup
sensor, while the two pin molex goes
to the cup motor.
Step # 2
Determining if Cup sensor is the problem
First step in diagnosing the problem
is checking to see if the cup sensor is
working properly. In the cup down
posistion, with the game powered on,
the sensor should show a red light
indicating that it is sensing the cup. If
the sesor is not working check the
connection at the molex listed above,
there may be a loose pin that needs
to be reseated. If the light is on check
connection on the motor molex.
Step # 3
Replacing Cup motor or Cup sensor
If the cup sesor and cup motor
connections are not the problem and
the I/O board outputs (outputs are
covered in the I/o charts) have been
check and are in good condition,
follow the procedures listed below to
replace the cup motor. Locate and
remove the eight 2.5 mm hex
headed bolts holding down the
pyramind playfield acrylic. Please
note the shorter of the screws goes in
the middle of the acylic.
Jennison Entertainment Technologies
Power Pong Service Manual
Page 39
