B&K Precision 851 User Manual

Model: 851

Deluxe EPROM Eraser

USER MANUAL

Safety Summary

Do not alter the ground connection. Without the protective ground connection, all accessible

electric shock. The power jack and mating

To avoid electrical shock hazard, disconnect power cord before removing covers. Refer servicing to

he line cord to the AC mains, check the rear panel AC line voltage indicator.

Applying a line voltage other than the indicated voltage can destroy the AC line fuses. For continued

static discharge (ESD). To avoid

damage, be sure to follow proper procedures for handling, storing and transporting parts and

The following safety precautions apply to both operating and maintenance personnel and must be observed during
all phases of operation, service, and repair of this instrument. Before applying power, follow the installation
instructions and become famil ia r with the operating instructions for this instrument.

Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety
standards of design, manufacture, and intended use of the instrument. B&K PRECISION assumes no liability for a
customer’s failure to comply with these requirements. This is a Safety Class I instrument.

GROUND THE INSTRUMENT

To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical ground. This
instrument is grounded through the ground conductor of the supplied, three-conductor ac power cable. The power
cable must be plugged into an approved three-conductor electrical outlet. Do not alter the ground connection.
Without the protective ground connection, all accessible conductive parts (including control knobs) can render an
electric shock. The power jack and mating plug of the power cable meet 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

Instrument covers must not be removed by operating personnel. Component replacement and internal adjustments
must be made by qualified maintenance personnel. Disconnect the power cord before removing the instrument
covers and replacing components. Under certain conditions, even with the power cable removed, dangerous
voltages may exist. To a void injuries, always disconnect power and discharge circuits before touching them.

DO NOT SERVICE OR ADJUST ALONE

Do not attempt any internal service or adjustment unless another person, capable of rendering first aid and
resuscitation, is present.

DO NOT SUBSTITUTE PARTS OR MODIFY THE INSTRUMENT

Do not install substitute parts o r perform any unauthorized modifications to this instrument. Return the instrument
to B&K Precision for service and repair to ensure that safety features are maintained.

WARNINGS AND CAUTIONS

WARNING and CAUTION statements, suc h as the following examples, denote a hazar d and appear throughout this

manual. Follow all instructions contained in these statements.
A WARNING statement calls atte ntion to an operating procedure, practic e , or condition, which, if not followed

correctly, could result in injury or d eath to personnel.
A CAUTION statement calls attention to an operating procedure, practice , or condition, which, if not followed

correctly, could result in damage to or destruction of part or all of the product.

WARNING:

conductive parts (including control knobs) can render an
plug of the power cable meet IEC safety standards.

WARNING:

qualified personnel.

CAUTION:

CAUTION:

Before connecting t
fire protection, replace fuses only with those of the specified voltage and current ratings.

This product uses components which can be damaged by electro­subassemblies which contain ESD-sensitive compo nents.

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