Lexmark Optra C710 Service Manual - Page 174

5016-001 Network Card Option Service Check Error Code 976 - Network Card X (X=Network card 1, 2, or 3) A 976 error code indicates an unrecoverable software error in network card x. Verify that network card x is correctly installed in the socket on the interconnect board and is properly grounded. If you find no problem, contact your next level of support, before replacing the network card. Error Code 977 - Network Card X A 977 error displays when the RIP software detects a network card is installed in slot x, on the interconnect board, but cannot establish communications with the network card. If a network card works in another slot, replace the interconnect board. 250/250 Dual Paper Tray Service Check The 250/250 sheet dual tray option uses two of the same paper feed units that are in tray 1. Also included are idler rollers above the paper feed unit and paper guides on the side of the paper feed opening. An interconnect board assembly, drive module and LVPS for the option is located on the right side frame. Note: Check the following before proceeding with this service check: • Be sure the media feeds correctly from integrated tray (tray 1). • Be sure the primary power cord is plugged into the 250/250 option base unit and the option power cord into the printer. If the duplex option is installed, plug the 250/250 option power cord into the bottom tray of the duplex unit and plug the duplex unit power cord into the printer. • Be sure the printer is correctly installed over the 250/250 tray option, or over the duplex option, if installed. • Be sure media in the trays is within specifications. Be sure the following are not fed from tray 2 or 3. - 16 lb. paper should only be loaded in tray 1 or MPT. - Labels and card stock should be fed from the MPT only. - Transparencies should be fed from tray 1 or the MPT only. - Envelopes should be fed from the MPT. 2-108 Service Manual