50

SWITCH TEST

LEFT COIN

OPEN/CLOSED

RIGHT COIN

OPEN/CLOSED

SERVICE

OPEN/CLOSED

START

OPEN/CLOSED

HOLSTER

OPEN/CLOSED

TRIGGER

OPEN/CLOSED

The third screen of the HARDWARE TESTS checks the ability of the main computer board to read various switches. As you close each switch, you should see the screen message for that switch change from OPEN to CLOSED when the main computer board recognizes the closure.

Note that screen update takes about 1 second so HOLD each switch closed until you see the screen message has changed.

Operate the SERVICE button last, because it clears this screen and moves to the next test.

The START message tests the front panel START switch.

The LEFT COIN and RIGHT COIN message tests the coin acceptors. If present, a dollar bill acceptor should register on the RIGHT COIN input.

The HOLSTER message tests the mercury switch for the RELOAD function in the Mad Dog McCree game. The screen should show the HOLSTER as CLOSED when the gun is pointed down and OPEN when the gun barrel is horizontal.

The TRIGGER message shows that the trigger switch is working and being recognized by the main computer board.

TESTING ROMS

This ROM TEST screen appears briefly during the main computer board's verification of the RAM & EPROMs on the RAM/ROM card. If the contents of the RAM & EPROMs are valid, the test program returns to the top-level service menu. If an error is detected, the test program halts at this screen and displays the error message ROM CHECKSUM FAILURE. If you see this message, first check that the IC chips on the RAM/ROM board are properly seated and that the RAM/ROM board itself is properly seated on the main computer board.

If RAM contents have unexpectedly changed, the message "RAM CHECKSUM ERROR ... RESETTING ADJUSTS" will be displayed. This message means that the main computer has assigned default values for all adjustable parameters and has reset all coin information and game statistics. This may occur due to RAM battery failure (5-yr RAM), as a result of installing updated EPROMs, or when a RAM/ROM card is installed for the first time.

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