Chapter 5 Service
Electrostatic Discharge (ESD) Precautions
100
Electrostatic Discharge (ESD) Precautions
Almost all electrical components can be damaged by electrostatic discharge
(ESD) during handling. Component damage can occur at electrostatic
discharge voltages as low as 50 volts .
The followi ng guideli nes wi ll help prevent ESD damage when serving the
power supply or any electronic device.
• Disassemble instruments only in a static-free work area.
• Use a conductive work area to d is si pate static ch arge.
• Use a conductive wrist strap to dissipate static charge accum ulati on.
• Minimize handling.
• Keep replacement parts in original static-free packaging.
• Remove all plastic, styrofoam, vinyl, paper, and other static-generating
materials from the immediate work area.
• Use only anti-static sol der suckers .
Surface Mount Repair
Surface mount components should only be removed using solderi ng irons or
disordering stations expressly designed for surface mount components.
Use of conventional solder removal equipm ent wil l alm os t always resul t in
perman ent damage to the printed ci rcui t board and w il l void your Hewlett-
Packard factory warranty.
To Replace the Power-Line Fuse
The power-line fuse is loca ted within the power supply’ s f use-holder assembly
on the rear panel (see page 24). For 100 or 115 Vac operation, you must use a
6.3 A slow-blow fuse (HP part number 2110-1030). For 230 V ac operation, you
must use a 3.15 A slow -bl ow fuse (HP part number 2110-1031).
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