Yamaha CHR Series, Manual

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PRECAUTIONS

PLEASE READ CAREFULLY 
BEFORE PROCEEDING 

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 WARNING

Always follow the basic precautions listed below to 
avoid the possibility of serious injury or even death from 
electrical shock, short-circuiting, damages, fire or other 
hazards. These precautions include, but are not limited 
to, the following:

If you notice any abnormality

• If any of the following problems occur, immediately turn off 

the power of the amplifier.
- Unusual smells or smoke are emitted.
- Some object, or water has been dropped into the product.
- There is a sudden loss of sound during use of the product.
- Cracks or other visible damage appear on the product.
Then have the product inspected or repaired by qualified 
Yamaha service personnel.

Do not open

• This product contains no user-serviceable parts. Do not 

attempt to disassemble the internal parts or modify them in 
any way. 

Water warning

• Do not expose the product to rain, use it near water or in 

damp or wet conditions, or place on it any containers (such 
as vases, bottles or glasses) containing liquids which might 
spill into any openings. 

Fire warning

• Do not place any burning items or open flames near the 

product, since they may cause a fire.

Hearing loss

• Before turning the power of all devices on or off, make sure 

that all volume levels are set to the minimum. Failing to do so 
may result in hearing loss, electric shock, or device damage.

• When turning on the AC power in your audio system, always 

turn on the power amplifier LAST, to avoid hearing loss and 
speaker damage. When turning the power off, the power 
amplifier should be turned off FIRST for the same reason.

 CAUTION

Always follow the basic precautions listed below to 
avoid the possibility of physical injury to you or others. 
These precautions include, but are not limited to, the 
following:

Location and connection

• Do not place the product in an unstable position or a location 

with excessive vibration, where it might accidentally fall over 
and cause injury.

• Keep this product out of reach of children. This product is not 

suitable for use in locations where children are likely to be 
present.

• Do not place the product in a location where it may come into 

contact with corrosive gases or salt air. Doing so may result in 
malfunction.

• Before moving the product, remove all connected cables.

• When transporting or moving the CHR15, always use two or 

more people. Attempting to lift the product by yourself may 
result in injuries, such as back injuries, or cause the product 
to be dropped and broken, which could lead to other injuries.

• Do not use the speaker’s handles for suspended installation. 

Doing so can result in damage or injury.

• Do not hold the bottom of the product when transporting or 

moving it. In doing so, you may pinch your hands under the 
product, and result in injury.

• Do not press the rear panel of the product against the wall. 

Doing so may cause the plug to come in contact with the wall 
and detach the cable from the connector, resulting in short 
circuiting, malfunction, or even fire.

• Always consult qualified Yamaha service personnel if the 

product installation requires construction work.
Improper installation might cause accidents, injuries, 
damage or malfunction of this product.

• Use only speaker cables for connecting speakers to the 

speaker jacks. Use of other types of cables may result in fire.

Handling caution

• Do not insert your fingers or hands in any gaps or openings 

on the product (ports).

• Do not rest your weight on the product or place heavy objects 

on it. 

• Make sure that the output power of the amplifier is lower than 

the power capacity of this product (see page 108). 
If the output power is not appropriate, malfunction or fire may 
occur.

• Do not input excessively loud signals that may result in 

clipping in the amplifier or cause the following:
- Feedback, when using a microphone
- Continuous and extremely loud sound from a musical 

instrument, etc.

- Continuous and excessively loud distorted sound
- Noise caused by plugging/unplugging the cable while the 

amplifier is turned on

Even if the output power of the amplifier is lower than the 
power capacity of this product (program), damage to the 
product, malfunction or fire may occur.

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