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3-2
OPEN THE
DOOR
ACTIVE
FUSE CARRIER
(LOWER)
FUSE
Check that the fuse in the active (lower) fuse carrier is of the correct rating. A spare
fuse can be stored in the upper fuse carrier position.
Snap the fuse compartment door closed.
Internal Fuse
The switching power supply contains a separate fuse. Most fault conditions should
be protected by the main fuse. The internal fuse rating is:
2 Amp, 250V, 20 mm, fast-blow.
3.4 Configuring Jumper Settings
The Model DP524 includes certain user-selectable options that are configured by
means of internal jumpers, as shown below. Their default settings (shipped with the
unit) are shown in the figure. Any jumpers not specifically mentioned are for factory
use only and should not be disturbed.
If you need to gain access to the interior of the DP524 to change these jumpers,
proceed as follows:
WARNING Be sure that the unit is NOT powered up. The power cord must not be connected.
Using a #2 Phillips head screwdriver, remove the 12 screws securing the top
cover/front panel subassembly to the chassis; there are three screws on the
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