Lexicon MPX G2, Service Manual

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MPX G2 Service Manual
SAFETY SUMMARY
The following general safety precautions must be observed during all phases of operation, service and repair of this instrument. Failure to comply with
these precautions or with specific warnings elsewhere in these instructions violates safety standards of design manufacture and intended use of the
instrument. Lexicon assumes no liability for the customer’s failure to comply with these requirements
.
GROUND THE INSTRUMENT
To minimize shock hazard the instrument chassis and cabinet
must be connected to an electrical ground. The instrument is
equipped with a three-conductor AC power cable. The power
cable must either be plugged into an approved three-contact
electrical outlet or used with a three-contact to two-contact
adapter with the grounding wire (green) firmly connected to an
electrical ground (safety ground) at the power outlet. The power
jack and mating plug of the power cable meet International
Electrotechnical Commission (IEC) safety standards.
DO NOT OPERATE IN AN EXPLOSIVE
ATMOSPHERE
Do not operate the instrument in the presence of flammable gases
or fumes. Operation of any electrical instrument in such an
environment constitutes a definite safety hazard.
KEEP AWAY FROM LIVE CIRCUITS
Operating personnel must not remove instrument covers.
Component replacement and internal adjustments must be made
by qualified maintenance personnel. Do not replace components
with power cable connected. Under certain conditions, dangerous
voltages may exist even with the power cable removed. To avoid
injuries, always disconnect power and discharge circuits before
touching them.
DO NOT SERVICE OR ADJUST ALONE
Do not attempt internal service or adjustment unless another
person, capable of rendering first aid and resuscitation, is present.
DO NOT SUBSTITUTE PARTS OR MODIFY
INSTRUMENT
Because of the danger of introducing additional hazards, do not
install substitute parts or perform any unauthorized modification to
the instrument.
DANGEROUS PROCEDURE WARNINGS
Warnings, such as the example below, precede potentially
dangerous procedures throughout this manual. Instructions
contained in the warnings must be followed.
WARNING
Dangerous voltages, capable of causing death, are present in this
instrument. Use extreme caution when handling, testing and
adjusting.
SAFETY SYMBOLS
General definitions of safety symbols used on equipment or in
manuals.
Instruction manual symbol: the product will be marked
with this symbol when it is necessary for the user to refer to the
instruction manual in order to protect against damage to the
instrument.
Indicates dangerous voltage. (Terminals fed
from the interior by voltage exceeding 1000 volts must be so
marked.)
WARNING
The WARNING sign denotes a hazard. It calls attention to a
procedure, practice, condition or the like which, if not correctly
performed or adhered to, could result in injury or death to
personnel.
CAUTION
The CAUTION sign denotes a hazard. It calls attention to an
operating procedure, practice, condition or the like which, if not
correctly performed or adhered to, could result in damage to or
destruction of part or all of the product.
NOTE:
The NOTE sign denotes important information. It calls attention to
procedure, practice, condition or the like which is essential to
highlight.
CAUTION
Electrostatic Discharge (ESD) Precautions
The following practices minimize possible damage to ICs resulting from
electrostatic discharge or improper insertion.
• Keep parts in original containers until ready for use.
• Avoid having plastic, vinyl or Styrofoam in the work area.
•
Wear an anti—static wrist-strap.
•
Discharge personal static before handling devices.
• Remove and insert boards with care.
• When removing boards, handle only by non-conductive surfaces
and never touch open-edge connectors except at a static-free
workstation.*
• Minimize handling of ICs.
•
Handle each IC by its body.
•
Do not slide ICs or boards over any surface.
• Insert ICs with the proper orientation, and watch for bent pins on
ICs.
• Use static shielding containers for handling and transport.
‘To make a plastic-laminated workbench anti-static, wash with a
solution of Lux liquid detergent, and allow drying without rinsing.