B&K Precision 310 - Manual - Manual (Page 14)

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FUSES REPLACEMENT
There are three fuses
l Power Supply Fuse
The power supply fuse is situated under the tester. Open the
battery compartment, and replace the fuse with the same type
(1.5A, >24V, Slow Blow)
l Current Circuit Fuse
Fuse protection is provided on the current terminals.
This fuse is situated under the Printed Circuit Board. To access
it, you need to unscrew the four mounting screws which are
holding the font panel. Two os these screws are located under
the foots, and the two others are located inside the battery
compartment.
The fuse is automatically blow by the crowbar, should voltage be
present on the resistance under test. This is to prevent damage
to the instrument.
It is indicative of this fuse being blown is the R Led stays "on".
C
(HBC, 1A, 250Vac, Slow Blow)
l Potential Circuit Fuse
Fuse protection is provided on the potential terminals.
This fuse is situated under the Printed Circuit Board. To access
it, you need to unscrew the four mounting screws which are
holding the font panel. Two os these screws are located under
the foots, and the two others are located inside the battery
compartment.
The fuse is automatically blow by the crowbar, should voltage be
present on the resistance under test. This is to prevent damage
to the instrument.
If the preliminary tests does not lit R this is indicative of this fuse
P
being blown. (HBC, 0.5A, 250Vac, Slow Blow)