Brother HL-7050 Series Service-Handbuch - Seite 9

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CHAPTER 4

DISASSEMBLY AND RE-ASSEMBLY

SAFETY PRECAUTIONS

To avoid creating secondary problems by mishandling, follow the warnings and precautions

below during maintenance work.

(1) Always turn off the power switch and unplug the power cord from the power outlet

before accessing any parts inside the printer.

(2) Some parts inside the printer are extremely hot immediately after the printer is

used. When opening the front cover or back cover to access any parts inside the

printer, never touch the red-colored parts shown in the following figures.

CAUTION:

(1) Be careful not to lose screws, washers, or other parts removed.

(2) Be sure to apply grease to the gears and applicable positions specified in this chapter.

(3) When using soldering irons or other heat-generating tools, take care not to accidentally damage

parts such as wires, PCBs and covers.

(4) Before handling any PCBs, touch a metal portion of the equipment to discharge any static electricity

charge on your body, or the electronic parts or components may be damaged.

(5) When transporting PCBs, be sure to wrap them in the correct protective packaging.

(6) 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

M3: 70N cm

M4: 80N cm

TAPTITE, CUP S

M3: 80N cm

SCREW

M3: 70N cm

M4: 80N cm

(7) When connecting or disconnecting cable connectors, hold the connector body, not the cables. If the

connector has a lock, release the connector lock first to release it.

(8) After a repair, check not only the repaired portion but also all connectors. Also check that

other related portions are functioning properly before operational checks.

WARNING

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