Read Sharp LL-T181A Service Manual online
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Notes to service personnel
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Pictorials
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This service manual and the product use a variety of pictorials in order to assure the safety of repair operations and of the product
repaired.
repaired.
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If those pictorials are ignored in repairing, the following troubles might occur:
·
Understand the meaning of those pictorials and read this manual carefully before trying to repair the product.
DANDER:
Failure to follow the instructions in the message might cause a serious accident or death.
WARNING:
Failure to follow the instructions in the message might cause a serious accident or death.
CAUTION:
Failure to follow the instructions in the message may cause personal injury or damage to the asset.
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Meaning of symbols
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Pictorial example
symbols mean the necessity of using caution.
Electrical shock
Hot surface
symbols mean actions which are prohibited.
symbols mean actions to be required.
Don’t touch
Remove power plug
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Cautions in servicing
Locations which require a special caution carry safety instructions using labels and stamps on the cabinet, chassis and components.
When servicing, observe the instructions on such labels and stamps.
When servicing, observe the instructions on such labels and stamps.
Electrical shock and burn
1. Prior to servicing, make sure to remove the power supply plug.
Electrical shock
2. Some parts inside the unit have a high voltage. Use caution to avoid an electrical shock accident when servicing an energized
unit.
Use specified parts
3. The component parts of this unit have safety characteristics such as flame resistance and dielectric strength.
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Use replacement parts which have the same characteristics as those of the components parts used for this unit.
·
In particular, component parts marked with
in the circuit drawing parts list are important for maintaining the safety of the
product. Make sure to use specified replacement parts.
Reinstall component parts in their original locations and return wires which have been rerouted for servicing purposes
to their original positions.
to their original positions.
4. Some component parts use insulating materials such as tubes or tape for safety purposes, or are mounted, a bit floated, on the
printed wiring board.
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When rerouting inside wiring or clamping the wires, use caution not to bring the wires too close to heating or high-voltage parts.
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Make sure to return inside wiring to their original locations.
Check for safety after servicing.
5. After finishing servicing, check whether the screws, parts, wires which have been removed for servicing are reinstalled properly.
In addition, check to see if you have not deteriorated parts around the part you serviced, and also check for insulation between
each of the attachment plug terminals and the external metal section.
each of the attachment plug terminals and the external metal section.
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