HP 2700n Service Manual - Page 236
Interface troubleshooting, Communication checks, EIO troubleshooting
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Interface troubleshooting Communication checks NOTE Communication problems are normally the customer's responsibility. Time spent attempting to resolve these problems might not be covered by the Hewlett-Packard warranty. Refer the customer to the network administrator for assistance in troubleshooting network problems. If the printer is not connected to an MS-DOS-based host, use the following table to check the connection. Table 6-27 Communication check Check Action Does the computer configuration match the parameters described in the configuration instructions? Verify that the configuration of the computer's communications port matches these parameters. View the Jetdirect configuration page for print server status, and to verify configuration parameters for operation on your network. NOTE If these parameters are not set correctly, an error message might appear on the control panel. EIO troubleshooting If the printer contains an optional HP Jetdirect print server and you cannot communicate with the printer over the network, verify the operation of the print server. Print a configuration page. If the Jetdirect card does not appear under "Installed personalities and options" on the configuration page, see the troubleshooting section of the HP Jetdirect Print Server Administrators Guide supplied with the print server. If the host system and printer still do not communicate, replace the formatter PCB or the EIO card and reconfigure the printer. If the problem persists, use a protocol analyzer to find the source of the problem. CAUTION HP LaserJet printers are not designed to work with mechanical switch-box products that do not have surge protection. These devices generate high transient voltages that cause permanent damage to the formatter PCB. This circumstance is not covered under the HewlettPackard warranty. 218 Chapter 6 Troubleshooting ENWW