Preparing The Printer For Maintenance; Preparing The Printer For Maintenance - Printronix P7000 Series Maintenance Manual

Chapter 4

Preparing The Printer For Maintenance

Preparing The Printer For Maintenance

WARNING
Unplug the printer power cord from the printer or power outlet before
you do 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.
IMPORTANT
Do not try to repair electronic components or assemblies in the field. Do
not de-solder or re-solder any circuit board components. Replace a
malfunctioning electronic assembly with an operational spare. Most
electronic problems are corrected by replacing the printed circuit board
assembly, sensor, or cable that causes the fault indication. This is also
true of failures traced to the hammer bank—it is not field repairable and
you must replace the entire shuttle frame assembly. Hammer spring
assemblies are the only replaceable components of the shuttle frame
assembly.
To prepare the printer for maintenance, do the following steps before you
make any adjustments or perform any maintenance procedure:
1. Set the printer power switch to O (off).
2. Unplug the printer power cord from the printer or AC power source.
3. Disconnect the data (signal) cable(s) from the printer interface.
4. Unload paper.
5. Read the entire adjustment or maintenance procedure before you begin
working on the printer.
6. Gather the necessary tools and parts before you begin working on the
printer.
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