Introduction; Degaussing The Display; Safety Considerations - HP 16500A Service Manual

4-1. Introduction

The HP 16500A/16501A requires no adjusting
when used in a normal environment. The
procedure given in this section is for the color
module. Do not perform these adjustments as
part of regular maintenance. Observe the
following rules before making any color module
adjustments.
Do not perform this procedure as normal
maintenance.
Make adjustments only if the instrument has
been subjected to extreme magnetic
environments and the colors are incorrect.
Before making any adjustments, try
degaussing the unit using the rear panel
degaussing switch or a color television type
degaussing coil.
Only qualified personnel who are familiar
with color CRT convergence procedures
should perform this adjustment.
Before adjustments are made, mark the
position of the potentiometers. This process
allows you to return the adjustments to their
original starting position.
HP 16500/16501A - Adjustments

4-2. Degaussing the Display

After the instrument has been used for awhile, the
CRT may become magnetized and the color or
other data may become distorted. To correct
these problems, press the Degauss button on the
power supply rear panel several times. If the
instrument has been subjected to strong magnetic
fields, it may be necessary to degauss the CRT
with a conventional external television-type
degaussing coil.

4-3. Safety Considerations

Although this instrument has been designed in
accordance with international safety standards,
general safety precautions must be observed
during all phases of operation, service, and repair
of the instrument. Failure to comply with the
precautions listed in the Safety Summary at the
front of this manual, or with specific warnings
given throughout this manual, could result in
serious injury or death. Service adjustments
should be performed only by qualified service
personnel.
Read the Safety Considerations at the front
of this manual before performing
adjustment procedures. Disconnect the
instrument from all voltage sources before it
is opened for any adjustment, replacement,
maintenance, or repair.
SECTION IV
Adjustments
4-1