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The Printing History shown below lists all Editions and Updates of this manual and the printing date(s). The first printing of the manual is Edi-
tion 1. The Edition number increments by 1 whenever the manual is revised. Updates, which are issued between Editions, contain replacement
pages to correct the current Edition of the manual. Updates are numbered sequentially starting with Update 1. When a new Edition is created, it
contains all the Update information for the previous Edition. Each new Edition or Update also includes a revised copy of this printing history
page. Many product updates or revisions do not require manual changes and, conversely, manual corrections may be done without accompanying
product changes. Therefore, do not expect a one-to-one correspondence between product updates and manual updates.
Edition 1 (Part Number E1330-90010) . . . . . . . . . . . . . . . . . . . . . . . . . . . . December 1992
Edition 2 (Part Number E1330-90011) . . . . . . . . . . . . . . . . . . . . . . . . . . . November 1994
Edition 3 (Part Number E1330-90012) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . April 1996
I n s t r u c t i o n
that the user
manual symbol
must refer to
affixed to prod-
the manual
uct. Indicates
for specific
Warning or
Caution informa-
product.
tion to avoid per-
sonal injury or
damage to the
Indicates the
field wiring terminal that must be connected
to earth ground before operating the equip-
ment—protects against electrical shock in
case of fault.
OR
The following general safety precautions must be observed during all phases of operation, service, and repair of this product. Failure to
comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and
intended use of the product. Hewlett-Packard Company assumes no liability for the customer's failure to comply with these require-
ments.
Ground the equipment: For Safety Class 1 equipment (equipment having a protective earth terminal), an uninterruptible safety earth ground
must be provided from the mains power source to the product input wiring terminals or supplied power cable.
DO NOT operate the product in an explosive atmosphere or in the presence of flammable gases or fumes.
For continued protection against fire, replace the line fuse(s) only with fuse(s) of the same voltage and current rating and type.
DO NOT use repaired fuses or short-circuited fuse holders.
Keep away from live circuits: Operating personnel must not remove equipment covers or shields. Procedures involving the removal of covers or
shields are for use by service-trained personnel only. Under certain conditions, dangerous voltages may exist even with the equipment switched
off. To avoid dangerous electrical shock, DO NOT perform procedures involving cover or shield removal unless you are qualified to do so.
DO NOT operate damaged equipment: Whenever it is possible that the safety protection features built into this product have been impaired,
either through physical damage, excessive moisture, or any other reason, REMOVE POWER and do not use the product until safe operation can
be verified by service-trained personnel. If necessary, return the product to a Hewlett-Packard Sales and Service Office for service and repair to
ensure that safety features are maintained.
DO NOT service or adjust alone: Do not attempt internal service or adjustment unless another person, capable of rendering first aid and resusci-
tation, is present.
DO NOT substitute parts or modify equipment: Because of the danger of introducing additional hazards, do not install substitute parts or per-
form any unauthorized modification to the product. Return the product to a Hewlett-Packard Sales and Service Office for service and repair to en-
sure that safety features are maintained.
4
Printing History
Safety Symbols
WARNINGS
Frame or chassis
ground ter-
minal—typi
the
cally connects to
ment's metal
frame.
A l t e r n a t i n g
current (AC).
WARNING
Direct current
(DC).
CAUTION
h a z a r d o u s
voltages.
I n d i c a t e s
equip-
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