Audio Precision Portable One Plus Access User Manual

Checking the Fuses
Whenever the line voltage is changed, the fuses should be checked to
make certain that their values are correct. To check the fuses, follow
these steps:
1. If the Cover (see Figure 10-2) is not already removed from the
instrument, remove it by inserting a small blade screwdriver (or
similar tool) into the Removal notch (shown on Figure 10-2)
and prying gently.
2. On the back of the Cover you should see the Fuse Block. If it is
set for the 100 V or 120 V configuration, you should see one
fuse. If it is set for the 230 V or 240 V configuration, you should
see two fuses.
3. Check the fuse values. For 100 V or 120 V line voltages, a single
500 mA (1/2 Amp) 250 Volt slow-blow fuse should be used.
For 230 V or 240 V line voltages, two 250 mA (1/4 Amp) 250
Volt slow-blow fuses should be used. The fuse ratings for each
line voltage are also shown on the rear panel of the instrument.
4. Replace fuses if necessary. Replace Cover, making sure that
indicator tip is inserted in correct indicator hole for the selected
line voltage (see Figure 10-1 for location of indicator holes).
Fuses
Fuse block
Cover
Jumper ba
r
230/240 V Orientation
Fuse
Fuse block
Cover
Jumper bar
100/120 V Orientation
Figure D-5. Fuse Block Orientations
D
Line and Fuses
Checking the Fuses Appendix D - Line Voltage and Fuse Selection
Portable One Plus Access User's Manual D-5
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Audio Precision Portable One Plus Access Specifications

General

Brand	Audio Precision
Model	Portable One Plus Access
Category	Test Equipment
Language	English