Brother CB200, Service Manual

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III - 1
3.1 DISASSEMBLY/REASSEMBLY
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Safety Precautions
To prevent the creation of secondary problems by mishandling, observe the following precautions
during maintenance work.
(1) Turn the power off and unplug the AC cord from the power outlet before accessing parts or
units inside the machine. When disassembling the printer, unplug the AC adapter from the
left side of the printer.
(2) Be careful not to lose screws, washers, or other parts removed for parts replacement.
(3) When using soldering irons and other heat-generating tools, take care not to damage the resin
parts such as wires, PCBs, and covers.
(4) 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.
(5) When transporting PCBs, be sure to wrap them in conductive sheets such as aluminum foil.
(6) Be sure to reinsert self-tapping screws correctly, if removed.
When removing self-tapping screws from aluminum frames, aluminum material may stick to
the threads of those screws, requiring higher torque for retightening. If it happens, do not
tighten them forcedly, but use new screws and observe the specified torque values.
(7) Tighten screws to the torque values listed on the next page.
(8) 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.
(9) Before reassembly, apply the specified lubricant to the specified points. (Refer to Section
3.2.)
(10) After repairs, check not only the repaired portion but also that the connectors and other
related portions function properly before operation checks.
(11) After completion of repairs, always press the FEED key to scroll the copyboard screen (white
sheet) to the home position. This prevents the screen from leaving traces of being curled
along the upper and lower pipes within the scanning area.
Make sure that the copyboard screen is in the home position before storing or packing it.