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SM 700820-01E
NOTE YOKOGAWA instruments have been designed in a way that the replacement of elec-
tronic parts can be done on an assembly (module) basis by the user. YOKOGAWA
instruments have also been designed in a way that troubleshooting and replacement of
any faulty assembly can be done easily and quickly. Therefore, YOKOGAWA strongly
recommends replacing the entire assembly over replacing parts or components within
the assembly. The reasons are as follows:
• The instruments use high-performance microprocessors, large scale CMOS gate arrays
and surface-mount components to provide state-of-art performance and functions.
• Repair of components can only be performed by specially trained and qualified mainte-
nance personnel with special tools. In addition, repair of components requires various
special parts and components, including costly ones. It also requires facilities where
highly-accurate and expensive maintenance equipment and special tools are provided.
• When taking the service life and cost of the instruments into consideration, the replace-
ment of assemblies offers the user the possibility to use YOKOGAWA instruments more
effectively and economically with a minimum in downtime.
INTRODUCTION
This manual contains information for servicing the YOKOGAWA Digital Oscilloscope
DL2700 series.
NOTE This manual is the first edition, September 1996.
WARNING
This Service Manual is to be used by properly trained personnel only. To avoid
personal injury, do not perform any servicing unless you are qualified to do so.
Refer to the Safety Precautions prior to performing any service.
Even in case of servicing according to this Service Manual and carried out by
qualified personnel, YOKOGAWA assumes no responsibility for any result
occurring from this servicing.
SAFETY PRECAUTIONS
The following general safety precautions must be observed during all phases of opera-
tion, service, and repair of this instrument. Failure to comply with these precautions or
with specific WARNINGS given elsewhere in this manual violates safety standards of
design, manufacture, and intended use of the instrument.
YOKOGAWA ELECTRIC CORPORATION assumes no liability for the customer’s
failure to comply with these requirements.
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