User Manual
IM 04P01B01-01E 
10-4
10.2  Troubleshooting Flow Charts
Follow the flow charts to correct the problem.
Is the power supply 
connected properly?
Is the power supplied 
properly?
NO
NO
NO
YES
YES
YES
Nothing works (pen and chart paper do not move).
Is the power switch 
turned ON? Does the switch 
work properly?
Connect properly.
Turn ON the power properly.
Contact your nearest 
YOKOGAWA dealer.
Section 2.5
Section 2.6
Supply the power at the specified 
voltage and frequency.
Does the input meet 
the specifications?
NO
NO
YES
YES
• The reading error is large.
• The indication is unstable.
• The pen is off the scale on either the 0% or 100% side.
Adjust the span and range.
Change the input to meet
the specifications.
Are the span and range 
settings correct?
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