Media-handling problems Print test pages To confirm that the printer can pick and move print media, generate a self test/configuration page by pressing G O and J OB C ANCEL simultaneously when the printer is in a ready state. If the printer cannot produce a self test/configuration page, generate an engine-test page. If an engine-test page does not print, see "Jam troubleshooting" on page 193. Engine test The engine test verifies that the print engine is functioning correctly. This test is very useful for isolating printer problems, because it does not involve the formatter.
Because the engine test prints a full page of lines across the entire printable area, it is also useful for checking and adjusting registration. The engine test prints from the first tray found that contains media and can be activated with the formatter installed or removed. See "Engine test" in chapter 3 for engine test procedures. Note Make sure that the toner cartridge is installed in the printer. Also, the print motor must be idle and the printer must be in standby mode. In order to produce an engine test print, media must be loaded into the printer. The system checks for media in tray 2, then in tray 1, and finally in tray 3 (if installed).
If media is loaded in both tray 1 and tray 2 the media will be duplexed. 1 Figure 157. Engine test button Self test/configuration page Use the configuration page to view the current printer settings, to help troubleshoot printer problems, or to verify installation of optional accessories such as memory (DIMMs), JetDirect cards, and printer languages. See "Self test/configuration page" in chapter 3 for a sample page. Note If status log information exists, it will print in the status area of the configuration page. If an HP JetDirect print server EIO card is installed, a JetDirect configuration page will also be generated. 192 Chapter 7 Troubleshooting C7058-90936