Lexmark T522 Service Manual - Page 110

4520-xxx Note: The Quick Disk Test is a non-destructive test and indicates Pass or Fail. If the test fails, replace the hard disk. If a problem still exists, replace the hard disk board. The "Disk Test/Clean" on page 3-3 is used to help restore the disk if the disk contains bad data and is unusable. This test is divided into a cleaning and a verifying or testing section. Warning: This can be a very lengthy test depending on the disk size. This test leaves the hard disk unformatted. The servicer or user must reformat the disk using the Format Disk Menu operation. This is a destructive type of test. All the data on the disk is destroyed and should not be performed on a known good disk. Network Card Option Note: The network is installed on the controller board on network model printers. 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 that a network card is installed in slot x on the interconnect board but cannot establish communications with the network card. 2-82 Service Manual