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Figure A-2. Rear Panel Markings

Changing the Battery

This instrument contains a lithium battery. Changing the battery should be

carried out only by a qualied electrician or by HP service personnel. There is a

danger of explosion if the battery is incorrectly replaced. Replace only with the

same or an equivalent type (HP part number 1420-0298). Discard used batteries

according to local regulations.

Changing the Fuse

There are two fuses in this instrument. Both of the fuses are T4.0A/250V

time-lag (HP Part No. 2110-0014). The fuse holder is at the rear of the

instrument, below the line power connector.To change a fuse,

1. Release the fuse holder: use the blade of a at-headed screwdriver to

depress the catch at the top of the holder and then pull the holder out a

little.

A-4 Installation

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HP 8168E Specifications

General