Brother HL-3450CN Series, Service Manual

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SHIPMENT OF THE PRINTER
viii
SAFETY INSTRUCTIONS
SAFETY PRINCIPLE
1) Before starting any operations, read this manual thoroughly. Especially read the safety instructions
in this section carefully and ensure that you understand the contents.
2) Perform all the operations by following the procedures described in this manual. Follow all the
cautions and warnings set out in the procedures and on safety labels affixed to the machine.
Failure to do so may result in human injury or equipment damage.
3) Perform only the procedures explained in this manual. Refrain from opening or touching any
portions that are not related to your required operation(s).
4) Repair and replacement of parts should be performed by trained and qualified persons only.
Operators should not attempt to do such repair or replacement work.
5) It must be appreciated that the above-mentioned cautions and warnings do not cover every
circumstance because it is impossible to evaluate all the conditions of repair situations.
SPECIAL SAFETY INFORMATION
Introductory Information
Cautions and warnings are made clear by them following a ‘Safety Alert Symbol’ or ‘Signal Word’ such
as DANGER, WARNING and CAUTION.
<SAFETY ALERT SYMBOL>
This is the safety alert. When you find this symbol placed on the equipment or marked in this manual,
be aware of the potential of human injuries. Follow the recommended precautions and safety
operation practices.
<Understanding Signal Words>
DANGER is used to indicate the presence of a hazard which will cause severe human injuries or a fatal
accident if the warning is ignored.
WARNING is used to indicate the presence of a hazard or unsafe practices which may cause severe
human injuries or a fatal accident if the warning is ignored.
CAUTION is used to indicate the presence of a hazard or unsafe practices which may cause minor
human injuries if the warning is ignored. CAUTION also calls your attention to safety messages in this
manual.
<Follow Safely Instructions>
Carefully read all the safety messages set out in this manual and also in the safety warning signs
placed on the equipment. In this manual, the safety instructions (safety alert symbols and signal
words) are enclosed in a rectangular enclosure to bring them to your attention. Keep the safety signs
on the equipment in good condition and ensure none are missing or damaged. Replace the safety
signs if unreadable or damaged. Learn how to operate the equipment and how to use the controls
properly. Do not let anyone operate this equipment without following the instructions. Keep the
equipment in proper working condition. Unauthorized modification to the equipment may impair the
function & safety and affect the life of the equipment.
Listed below are the various kinds of “WARNING” messages contained in this manual.
<Caution for the batteries>
There is a danger of explosion if the battery is incorrectly replaced.
Do not replace the battery.
Do not disassemble, recharge or dispose of in fire.
Used battery should be disposed of according to local regulations.