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WARNING! - Important safety instructions
WARNING: This apparatus must be earthed!
A PLEASE read this instruction manual carefully before switching on.
B ALWAYS use the supplied mains lead, if a replacement is required please contact your
authorised Marshall Dealer.
C NEVER attempt to by-pass the fuses or fit ones of the incorrect value.
D DO NOT attempt to remove the amplifier chassis, there are no user serviceable parts.
E Refer all servicing to qualified service personnel including replacement of fuses and
valves. Servicing is required when the apparatus has been damaged in any way, such as
when the power supply cord or plug is damaged, liquid has been spilled or objects have
fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not
operate normally or has been dropped.
F NEVER use an amplifier in damp or wet conditions.
G ALWAYS unplug this apparatus during lightning storms or when unused for long periods of
time.
H PROTECT the power cord from being walked on or pinched particularly at plugs,
convenience receptacles and at the point where they exit from the apparatus.
I DO NOT switch the amplifier on without the loudspeaker connected.
➲
Note: This equipment has been tested and found to comply with the requirements of the EMC
directive (Environments E1, E2 and E3) and the Low Voltage directive in the E.U.
➲
EUROPE ONLY - Note: The Peak Inrush current for the JCM900 4100 is 40 amps.
➲
CAUTION: Any changes or modifications not expressly approved by the party responsible for
compliance may void the users authority to operate the equipment.
➲
Note: It is recomended that all audio cables used to connect to the JCM900 4100 are of a high
quality screened type. These should not exceed 10 metres in length.
➲ WARNING: Do not obstruct ventilation grille and always ensure free movement of air around the
amplifier!
USA ONLY - DO NOT defeat the purpose of the polarised or grounding type plug. A
polarised plug has two blades with one wider than the other. A grounding type plug has two
blades and a third grounding prong. The wide blade or the third prong are provided for your safety.
When the provided plug does not fit into your outlet, consult an electrician for replacement of the
obsolete outlet.
Follow all instructions and heed all warnings
KEEP THESE INSTRUCTIONS !
!
From the Chairman
I would like to thank you personally for selecting
one of our Marshall JCM 900 valve amplifiers. For
over three decades my company has been
dedicated to the design and manufacture of the
finest amplification systems in the world.
By ‘listening’ to guitarists from all over the world
we know that their needs are constantly changing,
demanding more from their amplification.
The only way to cope with these new demands is
to invest into the research & development of new
models capable of fulfilling their ever more extreme
requirements. This investment has led to
remarkable innovation within our product ranges
over the years.
In all the JCM 900 models there are degrees of
innovation to give extra high gain, wider tone
control and greater connection flexibility to provide
you with the widest possible sound variations.
In addition the incorporation of new circuitry and
the unique ‘output valve protection circuit’ has
increased the renowned Marshall reliability even
further.
I wish you great success with your new amplifier.
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