Brother International HL-3400CN Service Manual - Page 257

CHAPTER 7 DISASSEMBL Y & RE-ASSEMBLY 4.6.7 Paper feeding sensor (PS1) (1) Remove the paper feeding sensor from the rear frame. (2) Disconnect the connector on the paper feeding sensor. 0 Paper feeding sensor Fig. 7-80 4.7 Fusing Unit DANGER Note in Parts Replacement • The fusing unit consists of important safety parts. Therefore, replacement of parts or disassembly and maintenance work should only be done at an appropriate service facility by skilled service personnel acquainted with electrical safety. After re-assembly the product safety should be reconfirmed. • Since the fuser unit is very hot, make sure that the fuser unit and surrounding area are well cooled down prior to starting the replacement of parts. You may get burned when touching hot areas. • The fusing unit contains silicone oil. Take care not to spill the silicone oil, especially on the floor, as the floor will become very slippery and dangerous. 7-52