Page 34 - Doctor Who

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Press the Enter button to activate the Test Menu, once the menu name is shown under the Main Menu.
Then, use the Up or Down button to cycle through the Test Menu selections.
Press the Enter button
to activate a test. Press the Escape button to return to the Test Menu. Press again to return to the Main
Menu. Note: During any test, press the Start button (Help) to obtain the wire color, driver number,
connector number, and fuse location.
T. TEST MENU
T.1
T.2
T.3
T.4
T.5
T.6
T.7
T.8
T.9
T.10
T .11
T.12
T.13
T .14
Switch Edges
Switch Levels
Single Switch
Solenoid Test
Flasher Test
General Illumination
Sound
&
Music Test
Single Lamps
All Lamps
Lamp & Flasher Tests
Display Test
Flipper Test
Trap Door Test
Mini-playfield Test
The switch matrix, on the left side of the display, shows the state of all switches. A dot indicates
the switch is open, and a square indicates the switch is closed. The numbers assigned to each switch
indicate where the switch is located in the matrix. The number on the left indicates the column, and the
number on the right indicates the row. Example: Switch 23 is 2nd column, 3rd row.
A short to ground, on either the row or column wire, appears as a shorted row(s). However, a
column wire shorted to ground disappears when all the indicated row switches are open. A row wire
shorted to ground does not disappear.
A shorted diode in the switch matrix can cause other switches to appear closed.
These
"phantom" switches (though not actually closed) complete a rectangle in the switch matrix. Therefore, if
two switches in the same column are closed (example; #22 and #24), and a third switch is pressed in
another column but in the same row as one of the first two (example; #32), the "phantom" switch #34 is
falsely indicated as closed. The switch with the shorted diode is diagonally opposite the "phantom"
switch (in this case#22).
T. 1 Switch Edges
Press each switch one at a time. The name and number of the switch is shown in the display. If a
switch other than the one pressed, or no switch at all is indicated, the system has detected a
problem with the switch circuit.
T.2 Switch Levels
This test automatically cycles through all switches that are detected closed. The name and number
of each switch that is detected is shown in the display. A filled square indicates the switch's position
in the matrix.
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