Brother International FAX 275 Service Manual - Page 64

1.17 Bottom Plate (1) Place the main frame upside down. (2) Remove the four screws. (3) Slightly lift up the bottom plate and disconnect the grounding terminal. (4) Remove the insulation sheet from the bottom plate. Positioning hole Checking hole "a" Insulation sheet Adhesive tape Bottom plate Grounding terminal Resin PCB support "b" 11 a C-, C_, C-, (Front) fr I Main frame (placed upside down) • Reassembling Notes • Once removed, the insulation sheet will become unusable and a new one should have to be put back in. When attaching it to the bottom plate, align the rear edge with that of the bottom plate and fit the positioning hole with that provided in the bottom plate, as shown above. • Before putting the bottom plate back into place, make sure that the power supply PCB is completely fitted in the resin PCB supports without any gap. After installing the bottom plate, check that resin PCB support "b" of the main frame appears from the checking hole "a" provided in the bottom plate and that the bottom plate is fitted in the main frame without any gap. If the power supply PCB comes into contact with the bottom plate, a short circuit may occur.