Yamaha BR12M Servicehandleiding - Pagina 2

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SPEAKER SYSTEMS

BR10/BR12/BR15/BR12M/BR15M

This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed

that basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and under-

stood by the users, and have therefore not been restated.

WARNING :

Failure to follow appropriate service and safety procedures when servicing this product may result in per-

sonal injury, destruction of expensive components and failure of the product to perform as specified. For

these reasons, we advise all Yamaha product owners that all service required should be performed by an

authorized Yamaha Retailer or the appointed service representative.

IMPORTANT :

This presentation or sale of this manual to any individual or firm does not constitute authorization certifi-

cation, recognition of any applicable technical capabilities, or establish a principal-agent relationship of

any form.

The data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and

service departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable

and changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to

exist, please contact the distributor's Service Division.

WARNING :

Static discharges can destroy expensive components. Discharge any static electricity your body may have

accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to

this bus.)

IMPORTANT :

Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power

to the unit.

The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (Where

applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly

other entities) to cause cancer and/or birth defects or other reproductive harm.

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT

SO EVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose

eyes to solder/flux vapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling

food.

Poly Switch

All full-range loudspeakers are fitted with a self-resetting

poly switch that protects the high-frequency driver from

damage caused by excessive power.

If a loudspeaker cabinet loses high-frequency output,

immediately remove power from the unit and wait for

two to three minutes. This should be long enough to

allow the poly switch to reset. Reapply power and check

the performance of the high-frequency driver before

continuing, with the power reduced to a level that does

not cause the poly switch to interrupt the signal.

WARNING

Components having special characteristics are marked

originally installed.

印の部品は、安全を維持するために重要な部品です。交換する場合は、安全のために必ず指定の部品をご使用ください。

IMPOR TANT NOTICE

WARNING: CHEMICAL CONTENT NOTICE!

and must be replaced with parts having specification equal to those

ポリスイッチ

スピーカーシステムには、自動復帰型ポリスイッチが内蔵されている

ため、過電流による故障から高音域ドライバーを保護します。スピー

カーシステムのキャビネットから高音域が出力されない場合は、すぐ

にパワーアンプの電源を切り、ポリスイッチをリセットする（冷やす）

ために、 2 ∼ 3 分そのままにしてください。再度電源を入れ、高音域ド

ライバーの出力を確認してください。