{"product_id":"giddings-and-lewis-io-communications-board-503-19770-10-0226-540","title":"Giddings and Lewis I\/O Communications Board 503-19770-10","description":"\u003cp\u003eThis listing is for a used Giddings and Lewis I\/O Communications Board, part number 503-19770-10, assembly drawing number 501-04314-01, Revision 2. The full assembly identifier per available documentation is 503-19770-10 \/ 502-M.1200.0405 \/ 501-04314-01 REV-2. This board is manufactured by Giddings and Lewis, now part of the FIVES group following corporate acquisition.\u003c\/p\u003e\n\n\u003cp\u003eThe board silkscreen is printed in yellow on green and clearly labels the function as I\/O COMMUNICATIONS BOARD. A white sticker label reading 503-19770-10 is affixed over a portion of the silkscreen. The component side features a sparsely populated layout consistent with a communications interface function. Visible ICs include positions U1 through U12, resistor networks RN1 through RN5, test points TP1 through TP6 (labeled TP1, TP2, TP3-4, TP5-6), and jumper positions J7, J8, J9. A labeled EPROM or firmware chip at U11 carries the sticker 502-57972-00 \/ 94203-01. A large edge connector assembly is mounted along one edge for rack backplane connection. Additional connectors include a red FOT connector and toggle switch positions labeled PASS and FAIL. A crystal oscillator component Y1 is visible near the right edge.\u003c\/p\u003e\n\n\u003cp\u003eThis board is a discontinued, obsolete component available only through the industrial surplus market.\u003c\/p\u003e\n\n\u003cp\u003eStock # 0226-540\u003c\/p\u003e","brand":"Giddings and Lewis","offers":[{"title":"Default Title","offer_id":48856823496944,"sku":"m00540","price":649.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/6648\/7280\/files\/D4EBF7BA-0344-479E-9E34-5E3D1C7CC970.jpg?v=1771630506","url":"https:\/\/mroexchange.com\/products\/giddings-and-lewis-io-communications-board-503-19770-10-0226-540","provider":"MRO Exchange","version":"1.0","type":"link"}