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www.analogtechnologies.com
Copyrights 2000 – 2012, Analog Technologies, Inc. All Rights Reserved. Updated on 11/22/2012
5
Analog Technologies
VC480C
Multimeter
The tester is a precise instrument. User is not allowed to apply any modification to the instrument circuit.
Caution
1. To ensure safety, the tested object must be completely shut off from power supply and must be testified that the tested
object has been fully discharged by short circuit discharge to testify that the tested object dose have any electrical hazard.
2. Do not apply voltage measurement to the input terminals.
3. Do not apply any measurement before the instrument’s batteries are well installed or before the rear cover is well loaded.
4. Before change battery or change fuse, remove all test leads from the tested object and turn off the power switch.
5. Keep the instrument away from water and dust. Do not fall or throw the instrument.
6. Keep the instrument away from high temperature, high humidity, flammable, explosive and strong magnetic environment.
7. Use a soft cloth dampened in a solution of mild detergent and water to clean the instrument. Do not spray cleaner directly
onto the instrument or use any abrasives or strong solvent.
8. If long time no use, take out the batteries from the instrument to avoid battery leakage damaging the instrument.
9. When use 9V battery, if the LCD displays low battery symbol “
”, please replace battery, see table 4.
Table 4. Step
1
Use a screw driver to open the battery door screws, and take off the battery door.
2
Take off the battery and replace with a new one. To ensure long time battery
power supply, it is recommended to use alkaline batteries.
3
Load the battery door and tighten the screws.
FUSE REPLACEMENT
The instrument uses a 150mA/60V resettable fuse. In case of replacement, please use a fuse of the same specification. And
follow instructions as below:
1. Tune the function switch to “OFF” position.
2. Use a screw driver to open the screws on the bottom, and take off the bottom cover.
3. Take off the PCB screws, and take off the PCB.
4. Locate the resettable fuse on the PCB, which is marked with “FUSE”. Use an iron to take off the fuse and replace it with a
new one of same spec.
5. Re-load the PCB, bottom cover and screws.
Caution
The instrument uses a resettable fuse, which will protect the internal circuits once wrong operations occur. Once the wrong
operation is canceled, the fuse will automatically reset, and there is no need to change fuse. Once a fuse change is in need, use a
fuse of the same spec.