How To Troubleshoot - Printronix SLPA8000 User Manual

How To Troubleshoot

You will be more successful in troubleshooting printer problems if you use
standard fault isolation techniques, which are summarized below:
1. Ask the operator to describe the problem.
2. Verify the fault by running a diagnostic printer test or by replicating the
3. Look for a matching message or symptom in Table 11 on page 198 or
4. If you cannot find the symptom in either troubleshooting table, use the
WARNING
ALWAYS disconnect the AC power cord from the printer or the power
outlet before doing any 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
6. Test printer operation after every corrective action. (See "Printer Tests"
7. Install any parts you replaced earlier that did not solve the problem.
8. Stop troubleshooting and return the printer to normal operation when the
conditions reported by the user.
Table 12 on page 226. If you find a match, follow the troubleshooting
instructions.
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
is a field-replaceable part or assembly.
electronic components or assemblies. Most electronic problems are
corrected by replacing the printed circuit board assembly, sensor, or
cable that causes the fault indication.
on page 196.)
reported symptoms disappear.
Troubleshooting At A Glance
195