Brother International HL 1240 Service Manual - Page 76
Laser Unit
UPC - 012502600855
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CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY 3.7 Laser Unit (1) Remove the three M3x16 Taptite screws. (2) Push the P harness cover to the right to release it from the hook and remove the P harness cover. (3) Disconnect the LD harness and the polygon motor connector. (4) Taking care not to touch the lens and mirror, remove the laser unit. LD harness Taptite, cup M3x16 Polygon motor harness Laser unit Polygon motor harness Taptite, cup M3x16 Taptite, cup M3x16 (hook) P harness cover Fig. 4-22 ! CAUTION: Never touch the reflect mirror and lens inside the laser unit. If there is any dirt or dust on the mirror or lens, blow it off using an air gun. Never touch the scanner window on the printer body. If there is any dirt or dust on the window, blow it off using an air gun. If cleaning the underside of the scanner window, wipe off dirt or dust with soft clean paper. Refer to subsection 3.3 'Cleaning the Scanner Window' in CHAPTER 5. Laser unit Reflect mirror Scanner window Printer body Lens Fig. 4-23 4-14