HP 5335A Service Manual

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Installation
2-1. INTRODUCTION
2-2. This section contains information for unpacking, inspection, storage, and installation.
2-3. UNPACKING AND INSPECTION
2-4. If the shipping carton is damaged, inspect the instrument for visible damage (scratches,
dents, etc.). If the instrument is damaged, notify the carrier and the nearest Hewlett-Packard
Sales and Service Office immediately (offices are listed at the back of this manual.) Keep the
shipping carton and packing material for the carrier’s inspection. The Hewlett-Packard Sales and
Service Office will arrange for repair or replacement of your instrument without waiting for the
claim against the carrier to be settled.
2-5. PREPARATION FOR USE
2-6. Power Requirements
2-7. The 5335A requires a power source of 100-, 120-, 220-, or 240-volt ac,+5%,-10%,48 to 66 Hz
single phase.
2-8. Line Voltage Selection
2-9. The HP 5335A Universal Frequency Counter is equipped with a power module that con¬
tains a printed circuit line voltage selector card to select 100-, 120-, 220-, or 240-voit ac operation.
Before applying power, the pc selector card must be set to the correct position and the correct
fuse must be installed as described below.
CAUTION
Before connecting the instrument to ac power lines, be sure that
the voltage selector is properly positioned as described below.
2-10. Power line connections are selected by the position of the plug-in pc selector card in the
module. When the card is plugged into the module, the only visible markings on the card indi¬
cate the line voltage to be used. The correct value of line fuse, with a 250-volt rating, must be
installed after the card is inserted. This instrument uses a 1A fuse (HP Part No. 2110-0360) for
100/120-volt operation; a 0.5A fuse (HP Part No. 2110-0202 for 220/240-volt operation.
2-11. To convert from one line voltage to another, the power cord must be disconnected from
the power module before the sliding window covering the fuse and card compartment can be
moved to expose the fuse and circuit card. See Figure 2-1.
2-12. Pull on the fuse lever to remove the fuse and then pull the card out of the module. The
fuse lever must be held to one side to extract and insert the card. Insert the card so the marking
that agrees with the line voltage to be used is visible.
2-13. Return fuse lever to normal position, insert correct fuse, slide plastic window over the
compartment, and connect the power cord to complete the conversion.
2-1
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HP 5335A Specifications

General

Brand	HP
Model	5335A
Category	Cash Counter
Language	English