Teradyne Z1800 Series, Руководство оператора

Страница: 13 / 118

1-2 SAFETY
Safety Practices
Safety features incorporated in the Z1800-Series testers are:
•
Safety warnings and information labels placed on testers close to hazards to warn a
knowledgeable service person of a potential hazard.
•
Detailed installation, verification, and service documentation.
•
Door locks to prevent unauthorized access to the interior of the testers.
Teradyne recommends that persons using the tester observe the safety practices described
below while the tester is operating.
WARNING! The tester is capable of producing lethal voltages. Extreme care must be taken to
ensure the safety of persons operating the tester. Please read all safety information
before attempting operation.
Operation
Operators should read this manual and understand the procedures and precautions.
Teradyne does not assume liability for the customer’s failure to comply with established
procedures.
•
Consult your supervisor about the proper steps to take if the tester should experience an
operational problem.
•
Do not operate the tester in the vicinity of flammable gases or fumes.
•
Do not substitute parts or perform any unauthorized modifications to the tester, in order
to avoid introducing additional hazards.
•
Do not place tools, food, liquids, or any other items on the top surfaces of the tester.
•
Wear protective eyewear and nonflammable clothing.
•
Remove or cover conductive items such as rings and watches before using or servicing
the tester.
•
Exercise electrostatic discharge (ESD) control measures when handling components or
circuit assemblies. Refer to the section titled “Electrostatic Discharge.”
•
Do not replace components on a board-under-test when it is installed on the tester.
•
Be aware of and exercise caution against all electrical hazards which include:
•
DC voltages equal to or greater than 60 V
•
AC voltages equal to or greater than 30 Vrms (42 V peak)
•
24 V pulses
•
240 V-A power combination
•
10 joules reactive energy
•
Keep tester doors locked.
•
Use caution near the device-under-test when power is applied.Capacitors mounted in
reverse (reverse polarity) can explode.
•
Do not use water or any other unauthorized cleaning agent either externally or
internally.
•
Use caution when lifting large fixtures.
•
Do not work on the fixture while it is connected to the tester.
•
Do not remove fixture receiver covers while a program is running. Power may be
applied to the fixture receiver and consequently place the operator at risk.
•
If you have a vacuum tester, do not use the tester vacuum hose to clean any part of the
tester. Doing so clogs the vacuum and shortens the vacuum pump life.
•
Z1805, Z1808, Z1880 and Z1890 testers can be tilted up to 15 degrees or be raised up to
eight inches. Only qualified maintenance technicians should perform tilt adjustments.