HP 4600 Service Manual - Page 379

Interface troubleshooting Communications 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 Company 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, proceed to the Table 7-39 Communications check table. Table 7-39 Communications check Check Is your computer configured to the parameters that are described in the configuration instructions? Action These parameters are required in order to communicate with the printer. Verify that the configuration of the computer's communications port matches these parameters. NOTE If these parameters are not set correctly, an error message might appear on the control-panel display. EIO troubleshooting (HP CLJ 4600 and 4650 models only) 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 Software Installation Guide. If the host system and printer are still not communicating, replace the formatter PCA and the EIO card and reconfigure the printer. If the problem persists, a protocol analyzer might be needed in order to find the source of the problem. CAUTION HP LaserJet printers are not designed to work with mechanical switch-box products that do not offer the correct surge protection. These devices generate high transient voltages that cause permanent damage to the formatter PCA. This circumstance is not covered by the Hewlett-Packard Company warranty. ENWW Interface troubleshooting 363