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WFM 90 & WFM 91 Service Manual
vii
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it.
Only qualified personnel should perform service procedures.
To avoid potential hazards, use this product only as specified.
To Avoid Fire or Shock Hazards:
Use Proper Power Source. Do not operate this product from a power source that
applies more than the voltage specified.
Use Proper AC Adapter. Use only the specified ac adapter provided with this
product to connect it to the mains supply.
Avoid Electric Overload. To avoid electric shock or fire hazard, do not apply a
voltage to a terminal that is outside the range specified for that terminal.
Do Not Operate Without Covers. To avoid electric shock or fire hazard, do not
operate this product with covers or panels removed.
Use Proper Fuse. To avoid fire hazard, use only the fuse type and rating specified
for this product.
Do Not Operate in Wet/Damp Conditions. To avoid electric shock, do not operate
this product in wet or damp conditions.
Do Not Operate in an Explosive Atmosphere. To avoid injury or fire hazard, do not
operate this product in an explosive atmosphere.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
Observe All Ratings. Observe and follow all ratings and markings on the product.
Consult the product manual(s) for further ratings information before making any
connections to the product.
This product is intended to be connected to electrical devices with their common
at ground potential. Do not connect to elevated or floating common voltages.