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CHAPTER 4
TROUBLESHOOTING
4-1.
General
This chapter provides procedures to fault isolate to field replaceable units. A working
knowledge of the P3000 Operator's Guide and the P3000 User's Reference Manual is
required to perform fault isolation procedures contained in this manual.
4-2.
Common Causes of Malfunctions
Improper printer operation may be caused by electronic failures, mechanical failures, or
interface problems. Many problems can be corrected by replacing one of the PCBAs.
Other problems associated with poor print quality can be cleared up by adjusting hamĆ
mer alignment, platen gap, shuttle turnaround time, or belt tension. The remaining probĆ
lems can be attributed to particular assemblies of the printing mechanism, or occasionĆ
ally, to cables or interconnecting PCBAs.
4-3.
Internal Testing
a.
Self Test.
The printer continuously monitors some of its own functions. When a problem develops,
fault indications appear on the indicators and digital display. A summary of these indicaĆ
tions is presented in Table 4-1.
b.
Supplemental Tests.
The printer is capable of conducting additional tests which can be used to evaluate its
performance. These tests, which are summarized in Table 4-2, are useful as an aid to
troubleshooting. For specific procedures, refer to User's Reference Manual.
4-4.
Fault Isolation
Failures are divided into catagories as listed in the malfunction symptom index, Table
4-3. To fault isolate, locate your symptom in the table. The table will direct you to a flow
chart which will guide you through the correct troubleshooting procedure. Note that
these flow charts do not take multiple failures into consideration.
P3000 Troubleshooting
4-1