Page 30 - Attack From Mars

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T.12 Flipper Coil Test
The Flipper Coil Test has three modes: Repeat, Stop, and Run. Only
one flipper should pulse at a time. The system has detected a problem if more than one flipper
pulses, a flipper comes On and stays On, or no flippers pulse during the Repeat or Run modes.
Repeat
The Repeat Mode pulses a single flipper. After entering this test, coil 01 shows in the
display and the corresponding flipper activates.
Press the Up or Down button to cycle
through the flipper coils, one at a time. The same flipper coil pulses until the Up or Down
button is pressed. Either press the Escape button to return to the Test Menu, or press the
Enter button to advance to the next mode.
Stop
The Stop Mode halts the Flipper Coil Test. Press Enter during the Repeat mode and the
Flipper Coil Test stops. No flipper coil should be activated while the test is stopped.
Either press the Escape button to return to the Test Menu, or the Enter button to advance
to the next mode.
Run
The Run Mode cycles through the flippers automatically.
The display shows the name
and number of the flipper coil currently being pulsed. Either press the Escape button to
return to the Test Menu, or the Enter button to advance to the next mode.
T.13 Ordered Lamp Test
The number assigned to each lamp indicates the lamp's position in the
matrix. The number on the left indicates the column. The number on the right indicates the row.
Example - Lamp 23 means 2nd column, 3rd row.
This test checks each lamp circuit individually. Press the Up or Down button to cycle through the
lamps. Lamps light in a clock-wise or counter clock-wise direction starting from the bottom of the
playfield.
Direction depends on which button, Up or Down, is pressed.
For each name and
number that is shown in the display the corresponding lamp should light. Any other results
indicates the system has detected a problem.
T.14 Lamp Row-Col Test
This test allows individual rows and columns in the lamp matrix to
be operated. This is useful for trouble-shooting wiring and driver problems.
Press the UP or DOWN buttons to cycle trough the different rows and columns.
T.15 Dip Switch Test
board (U27).
This test is used to show the positions of the dip switches on the CPU
T.16 Loop Test
gates.
This test is used to exercise the four (4) loop switches and the two (2) control
While in this test, roll a ball around either the left or the right loop. As the ball passes over the
loop switches, the state of the switches and the control gates are updated in the display. When
the ball has traveled completely around the loop (either from left to right, or from right to left), the
display will indicate any problems found with the switches and/or the control gates.
During this test, the diagnostic test buttons on the coin door act as follows:
Escape:
Enter:
This button returns to the previous menu.
This button clears any errors shown on the display.
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