146 
Installation
AC Line Power Supply Requirements
Replacing the Battery 
This instrument contains a lithium battery. Replacing thebattery 
should be carried out only by a qualified electrician or by Agilent 
Technologies service personnel.
There is a danger of explosion if the battery is incorrectly replaced. 
Replace only with the same or an equivalent type (Agilent part 
number 1420-0394). Discard used batteries according to local 
regulations.
Replacing the Fuse 
There is one fuse in this instrument. This is a T1A/250V (time-lag) 
(Agilent Part No. 2110-0007). The fuse holder is at the rear of the 
instrument, beside the line power connector. To replace the fuse,
1. Release the fuse holder: use the blade of a flat-headed 
screwdriver to depress the catch at the side of the holder and then 
pull the holder out a little.
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