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10. Troubleshooting
What to Check When There Is a Problem
If the CA0 does not work properly even after you check the items below or you have a
problem that is not listed below, contact your nearest YOKOGAWA dealer.
Symptom
Items to Check
Even when the power is on,
nothing appears on the LCD.
• Are the batteries inserted properly?
• Have the batteries worn out?
Current output is not working.
• Have the fuses melted (blow out)?
SOURCE mode:
• When the current is output, is the load
resistance too high?
(Open output terminals or leads)
SIMULATE mode:
• Is the input voltage too low?
(Check the external DCV power supply.)
The output or measured values
are strange.
• Is it possible that the values are being affected by
noise?
Control through the USB interface
is not working.
• Are the communication settings correct?
“Err60” appears when the power
is turned on.
• The settings that were specified with the setup
function are incorrect.
Refer to section 4.6, “Setup Function,” to return
the CA450 to its factory default settings.
“Err61” or “Err62” appears when
the power is turned on.
• The calibration data is incorrect.
Refer to section 4.7, “Additional Power-on
Functions,” to return the calibration data to its
factory defaults.
If after you perform the above operations, errors
still appear every time you turn on the power,
repairs are necessary.