D player control panel

To reach the two start/shoot/jump LED switches arid the Trak Ball™ assemblies, the player control panel must first be hinged open as shown in Figure 3-2. Follow this procedure:

» Remove the three Allen-head capscrews from the top of the control panel

• Gently lift the back edge of the control panel upward and away from the game. This will reveal the two Trak Ball™ assemblies and the LED start/shoot/jump buttons

1. LED Start/Shoot/Jump Switches

The LED pushbutton switches on the front edge of the control panel have a very low failure rate, and if a malfunction is suspected, they should be tested before replacement. To test the LED switches, proceed as follows:

• Remove the wires from the suspected switch.

• Set the multimeter to the ohms scale.

• Set the meter to the R x 1 position and "zero" it.

• Connect the meter leads to the appropriate switch contacts. (See Ftgure 3-31

• Check contacts by pushing and releasing the switch button for a very low resistance reading when closed and a very high reading when the switch is released (open)

• If the contacts do not operate "sharply" or if they always stay open or closed, replace the switch as described in Figure 3-3.

2. Trak Ball™ Assemblies

The two Atari Trak Ball assemblies with their associated printed circuit boards (two per assembly) are reached by opening the player control panel. To remove a Trak Ball assembly, disconnect steering PCB connectors and remove three assembly retaining screws: see Figure 3-4

2. HINGE THE CONTROL PANEL FORWARD AS SHOWN BY ARROW

TURN

COUNTERCLOCKWISE TO REMOVE

LIGHT-EMITTING 01006 rL.E.O.j CONTACTS

NORMALLY OPEN 'N O ¡CONTACTS

TURN

COUNTERCLOCKWISE TO REMOVE

LIGHT-EMITTING 01006 rL.E.O.j CONTACTS

NORMALLY OPEN 'N O ¡CONTACTS

DOUBLE-POLE SINGLE-THROW (DPST) SWITCH WITH INTERNAL LED

• Remove all wires from the suspected switch.

• Turn the switch counterclockwise while holding the cone- shaped nut on the outside of the game cabinet

• Install a new switch using the reverse procedure.

• Reconnect the harness wires.

Figure 3-3 LED Start Switch Testing and Replacement

CONTROL PANEL SHOWN HINGED OPEN

ASSEMBLY RETAINING SCREWS (3)

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