1.4 To Adjust the Carrying Handle
To adjust the position, grasp the handle by the sides and pull it outward. Then rotate the handle to
the desired position.
1.3 If the Power Supply Does Not Turn On
Use the following steps to help solve problems you might encounter when turning on the instrument.
If you need more help, refer to chapter 6 for instructions on returning the instrument to the supplier
for service.
1. Verify that there is AC power to the power supply.
First, verify that the power cord is rmly plugged into the power receptacle on the
rear panel of the power supply. You should also make sure that the power source
you plugged the power supply into is energized. Then, verify that the power supply
is turned on.
2. Verify the power-line voltage setting.
The line voltage is set to the proper value for your country (110VAC or 220VAC)
when the power supply is shipped from the factory. Change the voltage setting if it’s
not correct.
3. Verify that the correct power-line fuse is installed.
If the fuse was damaged, please see the table below to replace the fuse for your
power supply.
Model Fuse Description
IT6821
IT6822
IT6823
Fuse 2.5A T 250V for 220VAC
Fuse 5A T 250V for 110VAC
IT6831
IT6832
IT6833
IT6834
Fuse 3.15A T 250V for 220VAC
Fuse 6.5A T 250V for 110VAC
Chapter1 Quick Start
12 USER’S GUIDE
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