11
(1) Disconnect the test leads from the
PC20TK and turn OFF the Function
switch.
(2) Open the stand, loosen the rear case
securing screw and then remove the rear
case.
(3) Replace the fuse or batteries.
(4) Attach the rear case back in place and
secure it with the screw.
Reference: Checking the fuse for continuity
(1) Remove only the fuse from the PC20TK.
(2) Attach the rear case to the PC20TK and
set the Function switch to
.
(3) Check the removed fuse for electrical
continuity.
Note: Ensure that both of the batteries are replaced with new ones. Properly place the new
batteries with their polarities conforming to the ones engraved inside the rear case.
2-8 Storage and others
In using the PC20TK, be sure to observe the following instructions:
(1) Do not store the PC20TK in a place exposed to direct sunlight, high temperature (50 °C or
higher), or high humidity (70 % RH or higher).
(2) Avoid using the PC20TK in a place exposed to high or low temperature or high humidity.
(3) If the PC20TK is not used for a long period of time, store it with the built-in batteries removed.
(4) The PC20TK is neither dust-proof nor drip-proof.
(5) The panel, the rear case and others are made of plastics. Therefore, do not place them near
any volatile solvent or heat source.
(6) Lightly wipe off dust and other foreign matter on the external surface of the PC20TK by using
soft cloth.
(7) The readout (LCD) is made of glass. Do not give a strong impact to it, e.g., by dropping the
PC20TK.
2-7 Replacing the fuse and batteries
1. In order to prevent electric shock, be sure to separate the test pins from the object under
measurement before removing the rear case, and then turn OFF the Function switch on the
PC20TK.
2. Do not remove the rear case except when performing the assembling procedures described in
the instruction manual or replacing the fuse or batteries.
Warning
To replace the fuse and batteries, be sure to use the specified rated products.
• Rating of fuse: 0.5 A/250 V, 6.3 mm dia. x 30 mm (in glass tube)
• Rating of battery: R6 (AA size) manganese dry cell; 1.5 V x 2 pieces
Warning
Fig. 2-11:
To replace the fuse and batteries
Rear case
mounting screw
M3 × 22
Fuse
Ø 6.3 × 30 mm
0.5 A / 250 V
Front case
Dry Cell (R6)Stand
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