The following information is taken from the April 1976 Gottlieb Royal
Flush manual. This may be helpful when debugging a startup problem with
this or other Gottlieb 4-player games from the same period.
1. Inserting a coin or pushing the replay button actuates 'S' relay
(Start relay).
2. This relay will lock-in through its own switch and a motor 2B switch.
3. 'S' relay starts the motor running.
4. 'AX' relay actuates and the 'coin' unit resets through switches
on 'U' and 'S' relays and a switch on motor 1D. 'Q'
and 'U' relays de-energize when 'AX' relay operates.
5. When 'AX' relay actuates, the reset relays 'Z1' and
'Z2' are energized in sequence by rivets on the 'Player' unit,
through switches on 'AX' relay.
5a. Motor 1A steps the 'Player' unit, through switches on 'AX' relay
and 'P5B', to the 20th position energizing 'Z1'.
5b. When 'Z1' is energized the 1st and 2nd player score units reset
to zero through switches on motor 1A, motor 4A and 'Z1'. When all
score units of the 1st and 2nd player are at zero the player unit steps to
the 21st position through a normally closed switch on 'Z2' and
normally closed switches on all score units of the 1st two players,
actuating 'Z2' relay. The 3rd and 4th player score units now reset
through switches on motor 1A, motor 4A, and 'Z2'. The player unit
continues to its zero position through the closed switches on 'Z1',
'Z2', 'P5B' and motor 1A until 'P5B' opens.
6. When 'P5A' on the player unit closes, 'AX' and 'BX'
relays reset through motor 2C and switches on 'U', 'O', and
'R' relays. The reset cycle is now complete.
7. Inserting additional coins or pushing the replay button will step the
'coin' unit to a maximum of 3 (4 players) through switches on 'U' and
'S' relays and a switch on motor 1D. The replay button circuit opens
when 'coin' unit is on 3rd position.
8. Place the ball in the out hole. The ball return switch closes and
completes the circuit to 'O' relay through the normally closed
switches on 'A', 'AX', and 'Q' relays. 'O'
relay locks-in through its own switch and a switch on motor 2B. When
'O' relay is energized, motor 4C actuates the ball return coil (which
kicks the ball onto the runway) through a switch on 'O' and a
normally closed switch on 'BX' relay. The ball is now on the runway
and is ready to be put into play.
9. The remaining balls that enter the outhole are kicked across the trough
switch which pulls in 'P' relay. 'P' relay runs the motor.
Switches on 'U', motor 2C, 'P', 'BX', and motor 1A
advances the 'Player' unit the required number of steps determined by the
'Player' unit switches and the 'Coin' unit.
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