Brother International HL-3400CN Service Manual - Page 242
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HL-3400CN SERVICE MANUAL (4) Remove the set screw ST3x6 (2 pcs.) holding the power inlet base. (5) Remove the set screw M4x6 complete with the shakeproof washer to release the ground wire. Power inlet base "re Fig. 7-53 Ground wire (6) Disconnect the connectors (4 pcs.) from the low-voltage power supply PCB. (7) Remove the set screws ST3x6 (3 pcs.) from the low-voltage power supply unit frame. (8) Remove the low-voltage power supply unit complete with the frame. - I ------______ A Low-voltage power supply unit ea --\ Fig. 7-54 -1/27)---,--... A WARNING The ground wire is very important for the safety of users. Upon replacement of the low-voltage power supply unit, confirm that the ground wire (green and yellow color) is securely connected to the G) connector, the shakeproof washer is fitted and the screw is tightly fastened. 7-37