www.flippers.be - Playmatic repair guide

www.FLIPPERS.be
your guide to pinball in Belgium

Description of the BSC (relays) board
This board whose work is the one of activating the different solenoids of the machine, ball return unit, "taca", etc. is equipped with a 8 bit addressable latch (4724), an eight darlington driver (DS8863) and up to eight relays.
The six inputs coming from the IOS board are: -EN whose work is to open all relays; three nominated A, B & C, which correspond to the address of which one is transmitting the information one nominated DATA, which will be high if the determined relay for A.B.C. must close or low if the determined relay must open; finally, the signal -EN indicates to this latch when the information of the A.B.C. & DATA inputs is stable and valid to be passed to the memory.
Playmatic repair main page

Main

© Aeneas Verhé - averhe@gmail.com

		www.FLIPPERS.be your guide to pinball in Belgium

Description of the BSC (relays) board This board whose work is the one of activating the different solenoids of the machine, ball return unit, "taca", etc. is equipped with a 8 bit addressable latch (4724), an eight darlington driver (DS8863) and up to eight relays. The six inputs coming from the IOS board are: -EN whose work is to open all relays; three nominated A, B & C, which correspond to the address of which one is transmitting the information one nominated DATA, which will be high if the determined relay for A.B.C. must close or low if the determined relay must open; finally, the signal -EN indicates to this latch when the information of the A.B.C. & DATA inputs is stable and valid to be passed to the memory. Playmatic repair main page Main
© Aeneas Verhé - averhe@gmail.com