ITech IT7622 User Manual page 31

ООО "Техэнком" Контрольно-измерительные приборы и оборудование
Exception handling
6. Press key Up/Down to select Dsp Test. Press [Enter]. If 'Dsp Ok' displays
on the screen, Dsp has passed self-test. The self-test operation of
BackRam is similar to that of Dsp. After self-test, the screen is as follows.
If the power supply can not start normally, please check and take measures by
reference to steps below.
1. Check whether the power cord is correctly connected and confirm whether
the power supply is powered.
Correct wiring of power cord => 2
Incorrect wiring of power cord => Re-connect the power cord and check
whether the exception is removed.
2. Check whether the power in On. Power key is under "
Yes => 3
No => Please check the Power key to start power and check whether the
exception is removed.
3. Check whether the fuse of power supply is burned out.
If yes, replace with a fuse of the same specification.

The fuse of IT7622/IT7624 is arranged on the internal circuit board of
the machine, and must be replaced by professional personnel.

Fuse of IT7626/IT7627/IT1628 can unscrew directly by hand.For fuse
position, see Introduction of Rear Panel for details. Remove the wiring
panel before replacing the fuse of IT7627/IT1628.
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" On status.
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