Brother MFC-5200C Service-Handbuch - Seite 5

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6.1 DISASSEMBLY/REASSEMBLY

Safety Precautions

To prevent the creation of secondary problems by mishandling, observe the following precautions

for maintenance work.

(1) If y ou unpack the p ackage sent

from the user, first check that the

top edg e o f th e he ad w iper is

flush w ith t hat of the head cap

unit bef ore tu rning

machine. I f the he

protrudes or is

lightly pull up the head wiper and

move it towards the head cap unit

to retract it.

(2) Unplug the pow er c ord from the p ower o utlet be fore rep lacing pa rts or u nits. When having

access to the power supply, be sure to unplug the power cord from the power outlet.

(3) Be careful not to lose screws, washers, or other parts removed for parts replacement.

(4) Do not remove gears from the document feed roller ASSY (shown on page 6-14) or document

ejection roller ASSY (shown on page 6-19) if at all possible. Once removed, they will become

unusable and new gears will have to be put back in.

(5) When using soldering irons and other heat-generating tools, take care not to damage the resin

parts such as wires, PCBs, and covers.

(6) Before handling the PCBs, touch a metal portion of the machine to discharge static electricity;

otherwise, the electronic parts may be damaged due to the electricity charged in your body.

(7) When transporting PCBs, be sure to wrap them in conductive sheets such as aluminum foil.

(8) Be sure to reinsert self-tapping screws correctly, if removed.

(9) Tighten screws to the torque values listed on the following pages.

(10) When connecting or disconnecting cable connectors, hold the connector bodies not the cables.

If the connector has a lock, always slide the connector lock to unlock it.

(11) Before reassembly, apply the specified lubricant to the specified points. (Refer to Subsection

6.2 in this chapter.)

(12) After repairs, check not only the repaired portion but also that the connectors and other related

portions function properly before operation checks.

(13) Once the print head unit prints, it will start head locking operation after five seconds from the

end of printing. T he he ad l ocking opera tion wi ll tak e 5 to 10 secon ds. NEVER unplug the

power cord before the machine completes the head locking operation; doing so w ill make the

print head unit unusable and require replacement with a new print head unit.

When you receive the m achine from the us er or when you pack it for sending it back to the

user, check the head locking state.

on the

ad wiper

out of

place,

Head wiper

6 -1

Head cap unit