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Best Maintenance Repair Practices
The procedures presented in this manual are to be considered best maintenance repair practices. These
procedures are intended to optimize the performance and durability of your machine. Best maintenance
repair practices are to be performed using the correct tools and xtures while adhering to all safety pre-
cautions appropriate for each job.
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WARNING!! Personal injury may result if proper precautions are not observed. Remove rings,
watches, and any other metallic objects from hands and wrists before servicing the machine.
Remove metallic articles from shirt pockets to prevent them from falling into the machine. Do
not allow loose clothing or long hair contact moving parts of the machine. Under certain con-
ditions of machine failure, the moving parts of the machine may not be controllable by normal
means. At these times, the machine may operate without notice.
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CAUTION!! Use extreme care not to drop metallic objects, tools, or other conductive material on
the main Printed Circuit Board (PCB) when you have the base cover removed. If you drop such
objects on the main PCB, it can severely damage the electronics which will be very expensive to
repair.
Maintenance Philosophy:
The maintenance philosophy used in this manual is to isolate potential problems within the system to the
smallest practical replacement assembly. Therefore, components are typically not repaired, but rather, a
circuit board or mechanical subassembly may be replaced.
In the process of isolating problems in the machine, the person performing the troubleshooting must also
practice good troubleshooting techniques. Good troubleshooting techniques include, but are not limited
to, guarding against static electricity that can result in further damage to machine components, and only
replacing one part at a time to enable identication of the defective part after the machine is repaired.
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WARNING!! Failure to practice Best Maintenance Repair Practices may result in injury to person-
nel performing the work and/or damage to the equipment. The warranty is exclusive of, and
may be VOID if poor maintenance practices have caused damage to the equipment.
Dust:
As with any electronics, the worst source for contamination for the PCBs and the Control PCB is dust.
Although great care has been made during the design of the electronics in the machine, dust accumula-
tion may cause failure of the machine if it is allowed to accumulate.
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CAUTION!! DO NOT use solvents of any type on the printed circuit boards (PCBs) or sensors.
Solvents will damage the electronic components. Use only compressed air to clean these items.
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