Welch Allyn Grason-Stadler GSI 17 1717-9700, Руководство по обслуживанию

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FOREWORD
GENERAL SERVICE INFORMATION
Operating, check-out procedures, trouble-shooting hints, etc.,
can be found in the Instruction Manual (1717-0100). Repair
and/or bench testing of GSI 17 Audiometers should only be
performed by trained personnel. The following instructions are
provided primarily for use by persons who are skilled in the
repair of electronic equipment.
CMOS HANDLING PRECAUTIONS
Many of the integrated circuits on the P.C. boards are CMOS and
NMOS type.
CAUTION
Failure to observe the following precautions whenever a circuit
board or an integrated-circuit package is handled can result in
damage to the GSI 17.
a. Place instrument and parts on a grounded, conductive work
surface.
b. Ground yourself (with a strap having about 1 M ohm
resistance).
C . Ground the frame of any test instrument or soldering iron to
be used.
d. If any circuit boards are to be stored or transported,
enclose them in conductive (anti-static) envelopes.
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