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DR4300 Circular Chart Recorder
168 DR4300 Circular Chart Recorder Product Manual 12/03
7.3.5 Troubleshooting Erratic Pen Movement
Procedure
Table 7-5 explains what to do if the pen remains at the high end of range when the input signal is low.
Table 7-5 Troubleshooting Erratic Pen Movement Symptoms
Step What to do How to do it or
where to find the instructions
1
Check the sensor and lead wires for
continuity. Check the connections to TB2
on the printed circuit assembly for the pen
with the problem.
Replace the sensor lead wires as needed.
Tighten the connections.
2
Check the pen and input configuration
data.
Refer to Section 3 – Configuration, Startup, and
Operation of Recorder without Display.
3
Run step test. Refer to Section 3 – Configuration, Startup, and
Operation of Recorder without Display
(Subsection 3.3.3).
4
Replace the servo plate assembly. Refer to the replacement procedure in Section 9
– Replacing Hardware Assemblies.
5
Replace the printed circuit assembly for
the pen having the problem.
Refer to the replacement procedure in Section 9
– Replacing Hardware Assemblies.