Brother International HL-2400C Service Manual - Page 149

41 BD CHECK Laser beam position and laser power can be checked. Procedure Description of Procedures 1) Press the Continue button after selecting screen (a) "BD CHECK". (a) → (b) 2) The scanner motor scans the laser beam as it is rotating. If the scanning position of the laser beam is normal, "GOOD" is displayed on the LCD, otherwise "FAIL". (b) or (c) Scanner motor automatically stops rotating after 60 seconds. (d) 3) Press the Font button to exit the BD CHECK mode. (b) → (d) LCD Message 39 FACTORY MODE a) BD CHECK 41 BD CHECK b) GOOD 41 BD CHECK c) FAIL d) 39 FACTORY MODE DP CHECK 42 FU CHECK Availability of oil in the fusing unit can be checked. Procedure Description of Procedures 1) Press the Continue button after selecting screen (a) "FU CHECK". (a) 2) The fusing unit starts the heat-up process, and checks the availability of fuser oil. If oil is available in the fusing unit, "GOOD" is displayed in the LCD, otherwise, "FAIL". (b) 3) Press the Font button to exit the FU CHECK mode. (c) LCD Message 39 FACTORY MODE a) FU CHECK 43 FU CHECK b) OIL:GOOD 39 FACTORY MODE c) DP CHECK V-28