Safety Considerations 
WARNINGs, CAUTIONs, and Notes 
WARNINGS,  CAUTIONS 
and 
Notes are used in  this manual 
to 
alert 
users 
to 
important 
situations. 
They 
are used as follows: 
•  WARNINGS contain information which, if not observed, could re-
sult in injury 
to 
personnel or loss of life. 
•  CAUTIONS contain information which if not observed,  could re-
sult in damage 
to 
or 
destruction of equipment. 
•  Notes contain information 
that 
will assist you in accomplishing 
the 
job. 
WARNING 
The power supply is hazardous to personnel.  Ex-
treme care  must  be taken when connecting volt-
meter probes to the test points.  Turn off the unit 
and remove the power cord before connecting or 
removing test probes. 
CAUTION 
Integrated circuits on PC boards are  susceptible 
to  damage 
by 
electro-static  discharge.  Extreme 
care must be taken when handling printed circuit 
boards. 
Use an Anti-static  Workstation. 
Note 
Hewlett-Packard  supports  field  repair  of  these 
products  only 
to 
the 
board 
or  assembly  level. 
Component  level  information  and  repair 
is 
not 
within 
the 
scope of this manuaL nor available. 
vi  Notices