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Chapter
5
Troubleshooting Other Symptoms
Troubleshooting Other Symptoms
Use standard fault isolation techniques to troubleshoot malfunctions not
indicated by display messages. These techniques are summarized below:
1. Ask the operator to describe the problem.
2. Verify the fault by running a diagnostic printer test or by replicating
conditions reported by the user.
3. Look for a match in the General Symptom List below. If you find a
match, follow the instructions.
4. If you cannot find the symptom in the General Symptom List, use the
Half-Split Method to find the malfunction:
a. Start at a general level and work down to details.
b. Isolate faults to half the remaining system at a time, until the final half
WARNING
Always disconnect the AC power cord from the printer or the power
outlet before doing a maintenance procedure. Failure to remove power
could result in injury to you or damage to equipment. If you must apply
power during maintenance, you will be instructed to do so in the
maintenance procedure.
5. Replace the defective part or assembly. Do not attempt field repairs of
electronic components or assemblies. Most electronic problems are
corrected by replacing the circuit board, sensor, or cable that causes the
fault indication.
6. Test printer operation after every corrective action.
7. Reinstall any parts you replaced earlier that did not solve the problem.
8. Stop troubleshooting and return the printer to normal operation when the
reported symptoms disappear.
General Symptom List
Table 9, beginning on page 199, is a list of possible printer problems that are
not indicated by messages on the LCD. Troubleshooting procedures are
included with each symptom.
If you encounter a problem that is not listed in Table 9, troubleshoot using the
Half-Split Method described above.
198
is a field-replaceable part or assembly.
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Table of Contents
Troubleshooting
