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Maintainence
6–6
AM700 Audio Measurement Set Service Manual
After cleaning, allow the interior to thoroughly dry before applying power to the
instrument.
CAUTION. Do not allow water to get inside any enclosed assembly or component.
Do not clean any plastic materials with organic cleaning solvents, such as
benzene, toluene, xylene, acetone, or similar compounds, because they may
damage the plastic.
After cleaning, carefully check the instrument for defective connections,
damaged parts, and improperly seated transistors or integrated circuits. The
remedy for most visible defects is obvious; however, if heat-damaged parts are
discovered, extensive repairs requiring a board exchange may be necessary to
restore the equipment to normal operation.
Operation of this instrument is dependent on the software, which is loaded in
Flash EPROM. It is possible that an instrument may contain older software and
therefore not be performing up to the level expected. It may save considerable
time and troubleshooting effort to determine which software version the
instrument contains. The User Manual that was shipped with the instrument
contains the software version level when the instrument was first delivered.
However, it is possible that the instrument was upgraded, or possibly a particular
instrument was missed for a field upgrade and therefore does not perform up to
expectation. Prior to servicing it is wise to determine that the instrument has
software that matches the level specified at the front of the User Manual.
Finding the Version Number. The version number and release date for the software
contained in the instrument’s Flash EPROM is displayed on the CRT every time
a new application is started.
Updating Operating Firmware. Firmware upgrades to the operating system of the
AM700 may be made from time to time. To update the firmware loaded in the
instrument, see the instructions later in this section of the manual or the
instructions that are provided with the upgrade materials.
Instrument performance should be checked after each 2000 hours of operation, or
every 12 months. This will help to ensure maximum performance and assist in
locating defects that may not be apparent during regular operation. The
Verification and Adjustment Procedures are included in this manual.
Visual Inspection
Determining the Software
Version
Performance Checks and
Readjustments