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3. To halt the display cycle, use MANUAL-DOWN.
Then, press ADVANCE to step through the
sequential digit display, digit by digit, and the subsequent "all segments" characters display test.
Use AUTO-UP to resume cycling, and to proceed to the next test.
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TEST/DIAGNOSTIC PROCEDURES
(Continued)
DIAGNOSTIC TEST PROCEDURES
WILLIAMS ELECTRONICS GAMES also continues to provide a series of diagnostic tests to aid the
operator in determining game condition (that is, whether the game's features and highlights are
operating satisfactorily).
These tests activate all the electonic and electromechanical
game devices,
so that operator can readily locate a malfunctioning device or simplify verify that all devices are working
properly. In the order of testing, tested features include music, displays, sounds, lamps, solenoids,
switches, and any special features.
A feature called the Auto Burn-in Mode is also available. This mode enables observation of the game
during diagnostic tests,
except Switch Test.
This mode can help locate 'intermittent'
problems.
To initiate tests, open the I.,:>in door. Then, switch the game on. Inside the coin door, set the
AUTO-UP/MANUAL- DOWN switch to MANUAL-DOWN.
Now, press the ADVANCE button.
MUSIC TEST.
1. In the Music Test, observe that the player 1 and 2 displays show the message, MUSIC TEST.
When this MUSIC TEST message appears, listen for an error code from the music board: One
beep indicates that the board is OK. Two beeps: RAM error. Three beeps: U4 error. Four
beeps: U19 error. You may repeat the beep test by pressing the DIAGNOSTIC button on the
Sound Board.
Switching to AUTO-UP, observe that the message now reads MUSIC OFF, and that the player 3
score display shows 00 00. Press the Credit button to select the desired music selection: 01 -
'Main Theme'
through 06 - 'King of the Hill Theme'. Adjust the volume control as desired.
2. Use the AUTO-UP position.
DISPLAY TEST.
1. To initiate the Display Test, press ADVANCE. Observe that player 1 and 2 displays briefly show
the words, DISPLAY TEST, and that the player 3 score display shows 01 (Display Test identifier).
2. Use AUTO-UP. Observe that all displays begin a display cycle of all Os through all9s, one digit at
a time. Verify that the proper comma segments light during display of the odd-numbered digits.
Next, a special "all segments" character 'walks' from left to right across each player score display.
SOUND TEST.
1. (From Display Test) To initiate the Sound Test, press ADVANCE. Observe that the player 1 and
2 displays show the message, SOUND TEST, and that the player 3 display shows 02 (the Sound
Test identifier). The player 3 display shows a series of test steps from 00 through 07. Verify that
a different sound is heard each time the number in the display changes.
2. To repeatedly pulse a single sound, use MANUAL-DOWN.
Verify that one particular sound
repeats. Press ADVANCE to step to the next sound, which repeats until ADVANCE is pressed
again. Use AUTO-UP to resume cycling the sounds, and to proceed to tile next test.