492/492P Service Vol. I (SN B030000 & up)
SERVICING SAFETY SUMMARY
FOR QUALIFIED SERVICE PERSONNEL ONLY
Do Not Service Alone
Do not perform internal service or adjustment of this prod
uct unless another person capable of rendering first aid and
resuscitation is present.
Use the Proper Fuse
To avoid fire hazard, use only the fuse specified in the parts
list for your product, and which is identical in type, voltage
rating, and current rating.
Use Care When Servicing With Power On
Dangerous voltages exist at several points in this product.
To avoid personal injury, do not touch exposed connections
and components while power is on.
Disconnect power before removing protective panels, sol
dering, or replacing components.
Power Source
This product is intended to operate from a power source
that will not apply more than 250 volts rms between the
supply conductors or between either supply conductor and
ground. A protective ground connection by way of the
grounding conductor in the power cord is essential for safe
operation.
Refer fuse replacement to qualified service personnel.
Do Not Operate in Explosive Atmospheres
To avoid explosion, do not operate this product in an atmo
sphere of explosive gases unless it has been specifically
certified for such operation.
SYMBOLS
In This Manual
Δ
|\ This symbol indicates where applicable cau
tionary or other information is to be found.
As Marked on Equipment
DANGER—High voltage.
TERMS
In This Manual
CAUTION statements identify conditions or practices that
could result in damage to the equipment or other property.
WARNING statements identify conditions or practices that
could result in personal injury or loss of life.
As Marked on Equipment
CAUTION indicates a personal injury hazard not immediate
ly accessible as one reads the marking, or a hazard to prop
erty including the equipment itself.
DANGER indicates a personal injury hazard immediately ac
cessible as one reads the marking.
A
Protective ground (earth) terminal.
ATTENTION—refer to manual.
Power Source
This product is intended to operate from a power source
that will not apply more than 250 volts rms between the
supply conductors or between either supply conductor and
ground. A protective ground connection by way of the
grounding conductor in the power cord is essential for safe
operation.
Grounding the Product
This product is grounded through the grounding conductor
of the power cord. To avoid electrical shock, plug the power
cord into a properly wired receptacle before connecting to
the product input or output terminals. A protective ground
x REV AUG 1981
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