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Yamaha F-20B Owner's Manual: Important Safety Instructions

Yamaha bass amplifier user manual.
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INFORMATION RELATING TO PERSONAL INJURY, ELECTRICAL SHOCK, AND FIRE HAZARD
WARNING-
When using any electrical or electronic product, basic
precautions should always be followed. These precautions include, but are
not limited to, the following:
.
1
Read all Safety Instructions, Installation Instructions, Special Mes-
sage Section items, and any Assembly Instructions found in this manual
BEFORE making any connections, including connection to the main
supply.
2.
Do not attempt to service this product beyond that described in the
user-maintenance instructions. All other servicing should be referred to
qualified service personnel.
3.
Main Power Supply Verification: Yamaha products are manufac-
tured specifically for the supply voltage in the area where they are to be
sold. If you should move, or if any doubt exists about the supply voltage in
your area, please contact your dealer for supply voltage verification and (if
applicable) instructions. The required supply voltage is printed on the name
plate. For name plate location, please refer to the graphic found in the
Special Message Section of this manual.
4.
DANGER
-Grounding Instructions: This product must be grounded
and therefore has been equipped with a three pin attachment plug. If this
product should malfunction, the ground pin provides a path of low resis-
tance for electrical current, reducing the risk of electrical shock. If your
wall socket will not accommodate this type plug, contact an electrician to
have the outlet replaced in accordance with local electrical codes. Do NOT
modify the plug or change the plug to a different type!
5.
WARNING:
Do not place this product or any other objects on the
power cord or place it in a position where anyone could walk on, trip over,
or roll anything over power or connecting cords of any kind. The use of an
extension cord is not recommended! If you must use an extension cord, the
minimum wire size for a 25' cord (or less) is 18 AWG. NOTE: The smaller
the AWG number, the larger the current handling capacity. For longer
extension cords, consult a local electrician.
6.
Ventilation: Electronic products, unless specifically designed for
enclosed installations, should be placed in locations that do not interfere
with proper ventilation. If instructions for enclosed installations are not
provided, it must be assumed that unobstructed ventilation is required.
7.
Temperature considerations: Electronic products should be in-
stalled in locations that do not seriously contribute to their operating
temperature. Placement of this product close to heat sources such as;
radiators, heat registers etc., should be avoided.
92-469-3
The exclamation point within the
equilateral triangle is intended to
alert the user to the presence of im-
portant operating and maintenance
(servicing) instructions in the litera-
ture accompanying the product.
The lightning flash with arrowhead
symbol, within the equilateral tri-
angle, is intended to alert the user to
the presence of uninsulated "dan-
gerous voltage" within the product's
enclosure that may be of sufficient
magnitude to constitute a risk of elec-
trical shock.

IMPORTANT SAFETY INSTRUCTIONS

POSSIBILITIES HAS BEEN INCLUDED IN THIS LIST.
PLEASE KEEP THIS MANUAL
IMPORTANT NOTICE FOR THE UNITED KINGDOM
WARNING: THIS APPARATUS MUST BE EARTHED
IMPORTANT. The wires in this mains lead are coloured in accordance with the
following code:
As the colours of the wires in the mains lead of this apparatus may not correspond with the
coloured markings identifying the terminals in your plug proceed as follows:
The wire which is coloured GREEN-and-YELLOW must be connected to the terminal in the
plug which is marked by the letter E or by the safety earth symbol or colored GREEN or
GREEN-and-YELLOW.
The wire which is coloured BLUE must be connected to the terminal which is marked with
the letter N or coloured BLACK.
The wire which is coloured BROWN must be connected to the terminal which is marked
with the letter L or coloured RED.
This applies only to products distributed by Yamaha-Kemble Music (U.K.) Ltd.
8.
This product was NOT designed for use in wet/damp locations and
should not be used near water or exposed to rain. Examples of wet /damp
locations are; near a swimming pool, spa, tub, sink, or wet basement.
9.
This product should be used only with the components supplied or;
a cart ,rack, or stand that is recommended by the manufacturer. If a cart,
rack, or stand is used, please observe all safety markings and instructions
that accompany the accessory product.
10.
The power supply cord (plug) should be disconnected from the
outlet when electronic products are to be left unused for extended periods
of time. Cords should also be disconnected when there is a high probability
of lightening and/or electrical storm activity.
11.
Care should be taken that objects do not fall and liquids are not
spilled into the enclosure through any openings that may exist.
12.
Electrical/electronic products should be serviced by a qualified
service person when:
a. The power supply cord has been damaged; or
b. Objects have fallen, been inserted, or liquids have been spilled into
the enclosure through openings; or
c. The product has been exposed to rain; or
d. The product does not operate, exhibits a marked change in perfor-
mance; or
e. The product has been dropped, or the enclosure of the product has
been damaged.
13.
This product, either alone or in combination with an amplifier and
headphones or speaker/s, may be capable of producing sound levels that
could cause permanent hearing loss. DO NOT operate for a long period of
time at a high volume level or at a level that is uncomfortable. If you
experience any hearing loss or ringing in the ears, you should consult an
audiologist.
IMPORTANT:
The louder the sound, the shorter the time period before
damage occurs.
14.
Some Yamaha products may have benches and/or accessory mount-
ing fixtures that are either supplied as a part of the product or as optional
accessories. Some of these items are designed to be dealer assembled or
installed. Please make sure that benches are stable and any optional fixtures
(where applicable) are well secured BEFORE using. Benches supplied by
Yamaha are designed for seating only. No other uses are recommended.
Connecting the Plug and Cord
GREEN-AND-YELLOW
BLUE
BROWN
: EARTH
: NEUTRAL
: LIVE
0106 R0 Printed in Indonesia

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