Troubleshooting / Service
Troubleshooting Procedures
Release M DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual 215
April 2017
Table 9-9 Procedure #4—Troubleshooting erratic pen movement symptoms
Do not lubricate the plastic gears on the chart and pen motors.
How to do it or where to find the data
Check the sensor and lead wires for
continuity. Check the connections.
Replace the sensor lead wires as needed.
Tighten the connections.
Check the pen and input configuration
data.
Refer to Section 3 - Configuration.
Replace the servo plate assembly.
Refer to the instructions included with the
replacement part.
Call Technical Assistance Center.
1-800-423-9883 USA and Canada
Table 9-10 Procedure #5—Troubleshooting pen failure symptoms
Do not lubricate the plastic gears on the chart and pen motors.
How to do it or where to find the data
Check the sensor and lead wires for
continuity. Check the connections.
Replace the sensor lead wires as needed. Verify
and tighten the input connections.
Check the pen arm for secure
mechanical attachment to the servo
shaft.
Verify that the flat-head screw that attaches the
pen arm to the plastic servo gear on the servo
shaft is tight.
Check the servo cable plug connection
(J6) on the main printed circuit board.
Visually examine the plug and reseat it.
Refer to the instructions included with the
replacement part.
Call Technical Assistance Center.
1-800-423-9883 USA and Canada
Table 9-11 Procedure #6—Troubleshooting keyboard and/or display failure symptoms
How to do it or where to find the data
Run a Key Test to check the operation of
the keys and displays.
Refer to Section 5 - Operation for procedures on
running a key test.
Replace the membrane switch
(keyboard) and /or display printed circuit
board as required.
Refer to the instructions included with the
replacement part.
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