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DR4300 Circular Chart Recorder
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DR4300 Circular Chart Recorder Product Manual
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8.5.5 Troubleshooting Erratic Pen Movement
Procedure
Table 8-9 explains what to do if the pen remains at the high end of range when the input signal is low.
Table 8-9 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 4 – Configuration, Startup, and
Operation of Recorder with Display.
3
Run step test.
Refer to Section 4 – Configuration, Startup, and
Operation of Recorder with Display (Subsection
4.4.3).
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.
8.5.6 Troubleshooting the Keypad and Display
Procedure
Table 8-10 explains what to do if a key does not respond and/or the display does not light.
Table 8-10 Troubleshooting Keypad and/or Display Failure Symptoms
Step
What to do
How to do it or
where to find the instructions
1
Run a Key Test to check the operation of
the keys and displays.
Refer to Section 4 – Configuration, Startup, and
Operation of Recorder with Display for procedure
for running key test (Subsection 4.4.4.4).
2
Verify correct alignment of display cable
with pins on connector at display module
and main PCA.
Insure tracks on cable are aligned with pins on
connector.
3
Replace the display and keypad
assembly or display cables, as required.
Refer to the replacement procedure in Section 9
– Replacing Hardware Assemblies.
Summary of Contents for DR4300 Series
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