Section 8: Model 9100 — Routine Maintenance and Test
8-7
Final Width = 215mm
8.2.4.4
Replacing Hi and Lo Terminal Fuses
1. Access
a. Switch 9100 Power
OFF
and disconnect the line power
lead.
b. Lift the left side of the 9100 to stand on its right side.
Rotate the instrument to give good access to the small
panel (Fig. 8.2.1) on the underside:
Fig. 8.2.2 Location of Hi and Lo Terminal Fuses
Front of Instrument
9100 Left Side
Foot
DANGER
HIGH VOLTAGE
Hi Terminal fuse
Lo Terminal fuse
4. Fuse Fitting
WARNING
MAKE SURE THAT ONLY FUSES WITH THE REQUIRED
RATED CURRENT AND OF THE SPECIFIED TYPE ARE
USED FOR REPLACEMENT.
THE FUSE-HOLDERS ARE NOT TO BE SHORT-
CIRCUITED. THIS PRACTICE WILL RENDER THE
WARRANTY VOID.
a. Ensure that 9100 Power
is still OFF
.
b. Locate the two fuse holders in the recess:
i. Fit each fuse by inserting its two pins into the holder
holes, then carefully push the fuse body home.
ii. Screw on the relevant fuse cap(s).
Fuse Cover
9100
Bottom
Cover
9100 Left Side
Foot
Four Screws
M3 x 6 CSK
Fig. 8.2.1 Fuse Cover Access
i. Pull the tilt stand out for better access.
ii. Unscrew four M3 x 6 Pozi-Countersunk screws to
release the panel.
2. Fuse Removal
a. Ensure that 9100 Power
is still OFF
.
b. Locate the two fuse caps (Fig. 8.2.2) in the recess:
i. Unscrew the relevant fuse cap(s).
ii. Remove the fuse(s) by pulling carefully on the
cylindrical fuse body.
3. Fuse Testing
a. Check each removed fuse for continuity and correct type.
b. Decide whether the fuse is to be re-fitted or replaced.