Technical data

122 U1401A User’s and Service Guide
6Maintenance
Fuse replacement
Replace any blown fuse in the instrument according to the
following procedures:
1 Power down the instrument and disconnect all the test
leads. Make sure that the charging adapter is also
removed.
2 Remove the battery cover and the batteries.
3 Loosen the three screws found on the bottom of the case
and remove the bottom cover.
4 Take out the circuit board as shown in Figure 6- 3.
5 Gently remove the defective fuse by prying one end of the
fuse loose and sliding it out of the fuse bracket.
6 Replace it with a new fuse of the same size and rating.
Make sure the new fuse is centered in the fuse holder.
Figure 6-2 Recharging the batteries
External AC
adapter jack
Charging indication
Green: Fully charged
Yellow: Charging
Set slide switch
at the CHARGE
position
NOTE
This manual provides only the fuse replacement procedures, but not the
fuse replacement markings.