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This information is the property of Oshkosh Specialty Vehicles and is considered to be confidential. The contents may not be used, either
partially or wholly, for any purpose inconsistent with which it was produced. This information may not be reproduced or disclosed without prior
express consent.
Error Code
Audio Beeps
Error
7(2) 7
(There is no
indication of the
type of DAC
failure)
A failure has occurred during the automatic calibration
of the digital to analog converter (DAC) circuit. The
second digit example (2) shows the type of digital to
analog failure.
0 - Measurement
1 - High Test
2 - Low Test
3 - Offset Cal
4 - Gain Cal
Other Problems with the Instrument
Most other problems arise from either mechanical damage from the instrument falling from a bench
or table, or electronic component failure. In these units, repair or troubleshooting the PCB or
individual component on the board is not feasible. It requires specialized test equipment and
probes not generally available to the public. Under most circumstances a replacement of the entire
PC Board is recommended. The instrument must be returned to the factory for PCB installation.
Occasionally, depending on the environment of use, keys can become stuck or function erratically
due to contamination. Use a mild non-abrasive cleaner solution to periodically clean the keypad
and screen. An aerosol jet spray of the type commonly used to clean computer keyboards can be
used to dislodge dirt and accumulations from the keypad.
The Error Code Table (Table 2) includes a description of certain fault codes which are diagnostic of
some common (usually electronic) problem with the instrument. Some of these codes refer to
specific components on the PCB that are problematic or have failed. These codes are useful in
reporting a problem with your instrument to Teledyne Customer Service. If an error code is
indicated on your monitor record the number and report it to the Customer Service Department at
the address below.
