Any interruption of the protective (grounding) conductor (inside or
outside the instrument) or disconnecting the protectiveearth terminal
@a
will cause a potential shock that could result in personal injury.
(Grounding one conductor or a two-conductor outlet is not sufficient
protection.)
13
Whenever it is likely that the protection has been impaired, the
instrument tnust be made inoperative and be secured against any
unintended operation.
If this instrument is to be energized via an autotransformer (for
voltage reduction) make sure the common terminal is connected to
the neutral (earth pole) of the power source.
m
Servicing instructions are for use by service-trained personnel only.
a
To avoid dangerous electric shock, do not perform any servicing
unless qualified to do so.
a
Adjustments described in the manual are performed with power
supplied to the instrument while ‘protective covers are removed.
Energy available at many points may, if contacted, result in personal
injury.
a
Capacitors inside the instrument may still be charged even if the
instrument has been disconnected from its source of supply.
m
For continued protection against fire hazard, replace the line fuse
only with 250V fuse of the same current rating and type (for example,
normal blow, time delay, etc.). Do not use repaired fuses or short
circuited fuseholders.
1-16. lNSTRUMENT AND MANUAL IDENTIFICATION
1.17. The instrument serial number is located on the heat sink next to the power input module
on the rear panel of the instrument. Hewlett-Packard instruments have a IO-character serial
number in the form: 0000A00000. The first four digits and the letter are the serial prefix. The last
five digits are the suffix. The prefix is the same for all identical instruments; the prefix ischanged
only to identify changes to the instrument. The suffix is assigned sequentially and is different for
each instrument. The contents of this manual applies to instruments with the serial number
prefix(e$) listed under SERIAL PREFIX on the title page.
I-18. An instrument manufactured after the printing of this manual may have a serial number
prefix that is higher than the prefix(er1 listed on the title page. If the serial prefix of your instru-
ment differs from that listed on the title page of this manual, there are differences between the
instruments described in this manual and your instrument. Instruments having a higher serial
prefix are covered by yellow Manual Changes sheets included with the manual. The Manual
Changes sheet contains information that explains how to adapt the manual to newer instruments.
If the change sheet is missing, contact the nearest Hewlett-Packard Salesand Service Office listed
at the back of this manual.
I-19. In addition to change information, Manual Changes may contain information for cor-
recting errors in the manual, To keep this manual as current and accurate as possible, Hewlett-
Packard recommends that you periodically request the latest Manual Changes sheetis). The
change sheet for this manual is identified by the manual print date and manual part number,
printed on the title page of the manual. Complimentary copies of the change sheet areavailable
from Hewlett-Packard.
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