Brother International HL-3400CN Service Manual - Page 128

CHAPTER 5 CONTROL PANEL OPERATION 2.3 Line Test Mode This mode tests the following items; Item LCD TEST LED TEST SW TEST SENSOR TEST RAM SIZE TEST TRAY 1 CHECK TRAY 2 CHECK FLASH CARD1 R/VV TEST FLASH CARD2 RAN TEST MIO TEST Self-test Description Displays the checker pattern Checks that all LEDs are on / off. Checks that all buttons work correctly. Checks that all sensors work correctly. Displays the NVRAM size Displays the paper size of the upper cassette (Tray 1). Displays the paper size of the lower cassette (Tray 2). Check/delete/import/export (read/write) on Card 1 ID. Check/delete/import/export (read/write) on Card 2 ID. Checks that the installed M'0 card is initialized. NOTE: If any errors occur during the following procedures, an error message appears. By pressing the Continue button, it is possible to proceed with the tests. (8) Install flash memory cards 1 & 2 and an MIO card into the printer. (9) Turn on the power while holding down the A button. When the message below appears, release the A button. LINE TEST (3) Press the Set button to make the printer start the self-test. (4) Press the Continue button to implement the LCD TEST. Check that the LCDs are all displayed correctly and none of the dots have dropped out. Also, check that the LEDs are all on. 5-6