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Safety
Considerations
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 prevent damage to the instrument. Service and adjustments should be
performed only by qualified service personnel.
Warning
w
Adjustments in this section are performed with power supplied to the
instrument and protective covers removed. There are voltages at many points
in the instrument which can, if contacted, cause personal injury. Be extremely
careful. Adjustments should be performed only by trained service personnel.
w
Power is still applied to this instrument with the (LINE) switch in the off
position. Before removing or installing any assembly or printed circuit board,
remove the line-power cord.
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Capacitors inside the instrument may still be charged, even if the instrument
has been disconnected from its source of supply.
n
Use a nonmetallic adjustment tool whenever possible.
Which
Adjustments
Should
Be
Performed?
Table 2-l lists the manual adjustments that should be performed when an assembly is repaired
or changed. It is important to perform the adjustments in the order indicated to ensure that
the instrument meets its specifications.
Test
Equipment
The equipment required for the manual adjustment procedures is listed in Table 1-4,
“Recommended Test Equipment
.”
Any equipment that satisfies the critical specifications
given in the table may be substituted for the preferred test equipment.
Adjustable
and
Factory-Selected
Components
Table 2-2 lists the adjustable components by reference designation and name. For each
component, the table provides a description and lists the adjustment number.
Refer to Table 2-3 for a complete list of factory-selected components used in the instrument
along with their functions. Factory-selected components are identified with an asterisk on the
schematic diagrams.
2-2 Adjustment Procedures