Brother International FAX 275 Service Manual - Page 65

1.18 Main PCB, NCU PCB and Power Supply PCB If you have already removed the scanner frame ASSY and speaker, slightly lift up the main PCB together with the NCU PCB and then disconnect the power supply harness from the main PCB. If the scanner frame ASSY and speaker are not yet removed, follow the steps below: FAX255/FAX275/FAX-515tHOIVIEFAX3 (1) Slightly lift up the rear edge of the NCU PCB and disconnect it from the main PCB. (2) Slightly lift up the rear edge of the main PCB and disconnect the following harnesses from the main PCB: • Main-panel harness (5-pin) • Cutter home position (HP) sensor harness (2-pin) • CIS harness (7-pin) • Recording head harness (12-pin) • Solenoid harness (2-pin) • Motor harness (6-pin) • Speaker harness (2-pin) • Power supply harness (6-pin) (3) Lift up the power supply PCB. Power supply PCB NCU PCB Power supply harness Main frame (placed upside down) - I \ .-> Main PCB (Front) NCU connector Main-panel harness (5-pin) 1- SW3 SW2 = Speaker harness (2-pin) u pI s El E El PH2 0 0 c-, .1_ (Rear edge) P1 1 L P7 ------ E Cutter HP sensor harness (2-pin) 9P3 CIS harness (7-pin) 1, I Ph- _JJEll1L, Pa r-I I __J l- Recording head harness (12-pin) Main PCB Solenoid harness (2-pin) Power supply harness (6-pin) Motor harness (6-pin)