Chapter Iii Disassembly And Reassembly; Safety Precautions - Brother HL-600 Service Manual

CHAPTER III
1

SAFETY PRECAUTIONS

To prevent the creation of secondary problems by mishandling, be careful about the following
precautions during maintenance work.
(1) Always turn off the power before replacing parts or units. When accessing the power
supply PCB or components, be sure to unplug the power cord from the power outlet.
(2) Be careful not to lose screws, washers, or other parts removed.
(3) Be sure to apply grease to the gears and applicable popsitions specified in this chapter.
(4) When using soldering irons or other heat-generating tools, take care not to damage the resin
parts such as wires, PCBs, and covers.
(5) Before handing the PCBs, touch a metal portion of the equipment to discharge the static
electricity charged in your body, or the electronic parts or components may be damaged.
(6) When transporting PCBs, be sure to wrap them in conductive sheet such as aluminum foil.
(7) Be sure to replace self-tapping screws correctly, if removed.
Unless otherwise specified, tighten screws to the following torque values.
TAPTITE, BIND or CUP B
TAPTITE, BIND S
SCREW
(8) When connecting or disconnecting cable connectors, hold the connector bodies, but not the
cables. If the connector has a lock, release the connector lock first to unlock it.
(9) After a repair, check not only the repaired poprtion but also the connectors, or check if other
related portions are functioning properly before doing operation checks.
DISASSEMBLY AND REASSEMBLY
M3 : 6kgf • cm
M4 : 9kgf • cm
M3 : 9kgf • cm
M3 : 7kgf • cm
M4 : 10kgf • cm
III - 1