Initial Steps; Using The Troubleshooting Charts; Problem Isolation Checklist - Printronix T3204 Maintenance Manual

Initial Steps

ALWAYS unplug the unit before attempting to replace any components.
Always be sure that the printer has been placed on a level, stable surface.
Before attempting any service, confirm that the printer power cord is plugged into
a known good outlet with the correct voltage, and the unit has been installed in
an area which is within acceptable environmental conditions (see page 1–9). A
visual inspection of the printer should also be performed and any excessive
accumulation of dirt or dust should be removed (see page 4–2).
Confirm that the printer has been correctly loaded with the proper media and
ribbon (see page 3–4).
Set the printer power switch to OFF and unplug it from its power source. If
power is needed for a procedure it will be stated in that procedure.
When working with the power supply section of the printer always use
extreme caution.
Read the procedure completely before attempting any troubleshooting on the
printer. Gather all tools necessary to complete the procedure before beginning.

Using the Troubleshooting Charts

NOTE: NOTE: In some cases there are different procedures depending
After performing the initial checks and confirming that conditions are correct,
follow the steps in the Problem Isolation Checklist chart appropriate to the
emulation is installed in the printer. These checklists are designed to direct
the service person to the appropriate Troubleshooting Procedure.
Always begin with Step 1, follow the instruction listed under Check Item, and
answer the question, YES or NO, under Result. The Corrective Action will
direct the service person either to another step or to one of the
Troubleshooting Procedures.
In the appropriate Troubleshooting Procedure chart, again always begin with
Step 1, follow the instruction listed under Check Item, and answer the
question, YES or NO, under Result. The Corrective Action will direct the
service person either to another step or to a suggested repair.
6–4
upon the particular emulation installed in the printer. Procedures
unique to LP+, IGP/PGL and IGP/VGL are designated by an "(a)"
while those unique to IGP/FGL are designated by a "(b)".
WARNING
WARNING
Troubleshooting