Chapter 1 13
Troubleshooting
Before You Start
Before You Start
There are four things you should do before starting to troubleshoot a
failure:
❏ Check that you are familiar with the safety symbols marked on the
instrument, and read the general safety considerations and the
safety note definitions given in the front of this guide.
❏ The instrument contains static sensitive components. Read the
section entitled “ESD Information” in this chapter.
❏ Become familiar with the organization of the troubleshooting
information in this chapter.
❏ Read the rest of this section.
WARNING These servicing instructions are for use by qualified personnel
only. To avoid electrical shock, do not perform any servicing
unless you are qualified to do so.
WARNING The opening of covers or removal of parts is likely to expose
dangerous voltages. Disconnect the product from all voltage
sources while it is being opened.
WARNING The detachable power cord is the instrument disconnecting
device. It disconnects the mains circuits from the mains supply
before other parts of the instrument. The front panel switch is
only a standby switch and is not a LINE switch (disconnecting
device).
WARNING The power cord is connected to internal capacitors that may
remain live for 5 seconds after disconnecting the plug from it’s
power supply.
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