Safety Considerations; Safety Symbols; Recommended Test Equipment; Service Aids - HP 5384A Operating And Service Manual

HP 5384A and HP 5385A
Service
manual.
If
the manual change sheets are m1ssrng,
contad your local Hewlett-Packard Sales and Support
Office. See the listing on the back cover of this
manual.
8-10. Revision letters (A, B, etc.) denote changes in
printed circuit layout. For example, if a capacitor type is
changed (electrical value may remain the same) and
requires different spacing for its leads, the printed
circuit board layout is changed and the revision letter is
incremented to the next letter. When a revision letter
changes the series number is also usually changed. The
production code is the four-digit seven-segment num-
ber used for production purposes.
8-11. SAFETY CONSIDERATIONS
8-12. Although this instrument has been designed in
accordance with international safety standards, this
manual contains information, cautions, and warnings
which must be followed to ensure safe operation and
to retain the instrument in safe condition. Service and
adjustments should be performed only by service-
trained personnel.
I
WARNING
I
ALL PROTECTIVE EARTH TERMINALS, EX-
TENSION CORDS, AUTOTRANSFORMERS
AND DEVICES CONNECTED TO THE INSTRU-
MENT SHOULD BE CONNECTED TO A PRO-
TECTIVE EARTH GROUNDED SOCKET. ANY
INTERRUPTION OF THE PROTECTIVE EARTH
GROUNDING WILL CAUSE A POTENTIAL
SHOCK HAZARD THAT COULD RESULT IN
PERSONAL INJURY.
ONLY THE-250V FUSES WITH THE REQUIRED
RATED CURRENT AND SPECIFIED TYPE
SHOULD BE USED. DO NOT USE REPAIRED
FUSES OR SHORT CIRCUITED FUSEHOLDERS.
TO DO SO COULD CAUSE A SHOCK OR FIRE
HAZARD.
8-13. Any adjustments, maintenance, and repair of
the opened instrument under voltage should be
avoided as much as possible and, when inevitable,
should be carried out only by a skilled person who is
aware of the hazard involved.
8-14. Capacitors inside the instrument may still be
charged even if the instrument has been discon-
nected from its source of power.
8-2
WARNING
I •
LINE VOLTAGE IS ALWAYS PRESENT AT THE
POWER CORD CONNECTOR, AC LINE FUSE
AND TRANSFORMER WHENEVER THE LINE
CORD IS ATTACHED. UNPLUGGING THE
POWER CORD IS NECESSARY TO REMOVE ALL
POWER FROM THE INSTRUMENT.
8-15. Whenever it is likely that grounding or fuse
protection has been impaired, the HP 5384A/HP must
be made inoperative and secured against any unin-
tended operation.
WARNING
I
THE SERVICE INFORMATION IS OFTEN USED
WITH POWER SUPPLIED AND PROTECTIVE
COVERS. REMOVED FROM THE HP 5384A/
HP 5385A. ENERGY AVAILABLE AT MANY
POINTS MAY, IF CONTACTED, RESULT IN
PERSONAL INJURY.
8-16. Safety Symbols
8-17. The following safety symbols shown in Fig-
ure 8-1 are used on equipment and in manuals:
8-18. RECOMMENDED TEST
EQUIPMENT
8-19. Test equipment and test equipment acces-
sories required to maintain the HP 5384A/HP 5385A
are listed in Table 1-2. Equipment other than that
listed may be used if it meets the critical specifications.
8-20. SERVICE AIDS
8-21. Pozidriv Screwdrivers
8-22. Many screws in the counter appear to be
Phillips, but are not. To avoid damage to the screw
slots, pozidriv screwdrivers should be used.
8-23. Nut Drivers
8-24. The BNC input connectors on the front and
rear panels have ring nuts to hold them in place. To
remove or tighten the nuts without damaging the
panel, place tape on the end of the nut driver to act as
a cushion.
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