725
Product Overview
10
Replacing the Fuses
The calibrator comes equipped with two 0.05A, 250V,
socketed fuses to protect the calibrator.
WWarning
To avoid electrical shock, remove the test
leads from the calibrator before opening the
battery door. Close and latch the battery
door before using the calibrator.
The fuses can be removed and checked for resistance. A
value of < 10 Ω is good. Problems while measuring using
the right jacks indicate that F3 may have opened. If you
can’t measure or source current with the left jacks, F4
may have opened. To replace the fuses, refer to Figure 4
and perform the following steps:
1. Turn the calibrator off, remove the test leads from the
terminals, and hold the calibrator face down.
2. Using a flat-blade screwdriver, turn the battery door
screws 1/4-turn counterclockwise and remove the
battery door.
3. Remove and replace the damaged fuse.
4. Replace the battery door and secure it by turning the
screws 1/4-turn clockwise.
Replacement Parts
Table 4 lists the part number of each replaceable part.
Refer to Figure 5.
Table 4. Replacement Parts
Item Description PN Qty.
1 Case top 664232 1
2 LCD mask 664273 1
3 Elastomeric strips 802063 2
4 Input/output bracket 691391 1
5 LCD bracket 667287 1
6 Mounting screws 494641 11
7 Backlight 690336 1
8 LCD 690963 1
9 Keypad 690955 1
10 Case bottom 664235 1
11 AA alkaline batteries 376756 4
12 Case screws 832246 4
13 Battery door 664250 1
14 Accessory mount 658424 1
15 Tilt stand 659026 1
16 Battery door 1/4-turn fasteners 948609 2
17 TL75 series test leads 855742 1
18 Test lead, red
Test lead, black
688051
688066
1
1
19 725 Product Overview Manual 1549644 1
20 AC72 alligator clip, red
AC72 alligator clip, black
1670641
1670652
1
1
21 CD ROM, contains User Manual 1549615 1
22 Input Decal 690948 1
23 Fuse 0.05A/250V 2002234 2
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