Electronics Adjustment; Initial Power Up; Seasonal Changeover - Midway NBA SHOWTIME Operator's Instruction Manual

ELECTRONICS ADJUSTMENT
1. From the rear of the cabinet, remove the perforated metal cover over the game electronics. Locate the
two blocks of DIP Switches on the SIO Board Assembly. DIP Switch U-13 number 8 must be changed
from Off to On. This changes the original game over to the new game. NOTE: The function of the
DIP Switches vary between games. Refer to the correct game manual for switch adjustments.
2. Do not reinstall the metal cover until the game operation has been verified in the Power Up steps.
INITIAL POWER UP
1. Plug the line cord into a source of A.C. power and turn it on. CPU Board indicators should illuminate.
2. The game will power up and begin self diagnostics. If no errors are found, the game will automatically
enter its "attract" mode. Check wiring and refer to Troubleshooting (Section Four) if problems occur.
3. Unlock and open the coin door. Press the TEST button to enter the menu system. Select
DIAGNOSTICS and choose SWITCH TESTS. Use this screen to verify that each switch and control
operates properly. Refer to Operation (Section Two) for explanations of test conditions and results.
4. From the DIAGNOSTICS menu, choose MONITOR TESTS to confirm proper video display operation.
If the monitor remote adjustment controls do not permit satisfactory picture quality to be obtained, the
monitor may not be matched correctly to the CPU Board video circuits. Jumpers are included in some
monitors to optimize the video impedance. Consult the video monitor manufacturer's literature for
jumper information. See Operation (Section Two) for test steps or Troubleshooting (Section Four).
5. From the DIAGNOSTICS menu, choose DISK TESTS to examine the Hard Disk Drive. Run each of
the tests in order to determine correct operation. The tests are described in Operation (Section Two).
6. From the DIAGNOSTICS menu, choose SOUND SUBSYSTEM TEST to check the audio circuitry. It
may be necessary to raise the volume level higher than normal for this group of tests (Section Two).
7. From the DIAGNOSTICS menu, choose DIP-SWITCH TESTS to verify optimum switch positions.
8. From the main menu, select EXIT to begin normal game operation. Open the coin door and press the
SERVICE CREDITS button to allow game play. Press a START button and select a team to begin.
Listen to the audio while playing the game. Note unexpected irregularities in sound (out of phase, no
low frequencies, mono signals from stereo speakers, etc.). Check the wiring harness for internal shorts
or strapped connections. Refer to Wiring (Section Three) or Troubleshooting (Section Four).
9. Turn off power, reinstall the perforated metal cover over the game electronics, and turn power back on.
10. Close and lock the coin door. Replace the rear cabinet door. Allow the system to operate for several
hours before attempting any game changes. Refer to Operation (Section Two) for adjustment steps.
SEASONAL CHANGEOVER
To return to the original game, reverse the changeover process. Turn off the game, change the cabinet
and control panel artwork, relocate the pushbuttons, and change the game switch. Store the unused
artwork carefully so that it can be used again and again. Be certain that power is off when DIP Switch Ui 3
number 8 is set: the other switches may be adjusted with power on and DIP-SWTCH TESTS active.
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