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Giddings & Lewis 503-19770-10 I/O Communications Board

$649.00 USD

Sale Sold out

ConditionSurplus - Untested MPN503-19770-10 Stock #0226-00540

Photos reflect current condition. Items differing from description may be eligible for return or refund — see our condition guide.

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Estimated package weight: 5.0 lbs

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This 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.

The 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.

This board is a discontinued, obsolete component available only through the industrial surplus market.

Stock # 0226-540

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Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.