Engine test The printer has a built-in test pattern (pairs of vertical lines). The test print can be made by pressing the test print switch located on the left side of the printer (see figure 93 on page 190) once—after the photosensitive drum has stopped and the printer has entered the standby mode. If the switch is held down, the test pattern is printed continuously. The switch can be used when paper is loaded in any tray other than tray 1. ! Verifies if the print engine is functioning correctly (the formatter is completely bypassed during an engine test) The engine test: ! Is used for isolating printer problems ! Is used for checking and adjusting registration !
Prints from tray 2, 3, or 4 only, not from tray 1 ! Can be activated with the formatter removed Note For the printer to perform an engine test, tray 2, 3, or 4 must be installed and loaded with paper, and the toner cartridge must be installed in the printer. Location of engine test button The engine test button is located on the left side of the printer, below the fan vent, as shown figure 93 on page 190. Figure 93. Location of the engine test button 190 Troubleshooting EN