A look inside: Score Board Controller


This is a device used to change scores on the big board during sporting events but what kind of board it controlls is unknown. When i recieved this item it was somewhat worn, bent pins, components and no chassis. Manufacturer unknown. Quite possibly made in sweden or modified for use in sweden, some buttons have swedish text, others don't.

Main PCB front:


Front view of PCB

Top you see a VFD capable of displaying 20 characters, beneath that three buttons, left and right probably adds a score to the board for team A or B.

Top right there are 10 buttons, 4 of them seems to have been replaced, some of the replaced buttons have swedish text instead of english.

"FUNK." - Function button
"PEDIOD / SET"
"STRAFF / GAME" - Straff means penalty.
"TIME OUT / TIE BREAKE"
"SERVE / MATCHER" - Matcher means matches
"+"
"-"
"STOPP"
"START"
(Symbol) - The last button shows a symbol, looks like a horn. Probably triggers a sound signal.

Bottom right: Number pad with numbers 0-9 and letters S and C.

Main PCB back:


Back view of PCB

Top right: Connector for interface board (white). Inteface board also connects to 3 of the pins on the green bottom center connector.

Above green connector is a motorola MC68A21, an interface adapter for the microprocessor. (Data sheet)

Crystal is 4.9152 MHz

Below the crystal is another 40-pin IC, it is a MC68A08 8-bit processor made by motorola.(Spec Sheet)

Other IC's:



SN74LS00 - Quad NAND gate (1)
SN74LS02 - Quad NOR gate (2)
SN74LS367AN - 3 state hex buffer (3)
CD4040BE - Binary counter/divider (4)

SN74LS74AN - Dual D-type positive edge-triggered flip-flop (5)
SN74LS08N - Quad AND gate (6)
SN74LS138N - 1-of-8 decoder/demultiplexer (7)
SN74LS163AN - synchronous 4-Bit counter (8)

HCF4093BE - NAND-Function Schmitt Trigger (10)
SN74LS04N - Hex inverter (11, 12)		 SN74LS139N - Dual 1-OF-4 Decoder/ demultiplexer (15, 17)

MM5035N - Octal 80-Bit Static Shift Register (14)
IL-1 - Probably an opto coupler (28)
UCN4815A - Segment-Digit Parallel-Input Display Driver (Spec Sheet) (21)
UCN4810A - Segment-Digit Serial-Input Display Driver (Spec Sheet) (22)

EPROM (27)

A, B and C are connectors.

"Interface board":


This connects to the main board, to a 4-pin canon x connector (early version of XLR) and 2 other connectors i haven't seen before (below). All output passes vi this board, and it must also sypply power to the unit.

Unknown connectors:



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Last Updated: 2006-02-03