Sony Tektronix AWG2021, Service Manual

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AWG2021 Service Manual
2-9
Operating Instructions
Before servicing the AWG2021, read the following operating instructions. These
instructions are at the level appropriate for servicing the AWG2021. The user
manual contains complete operator instructions.
In addition, section 4, Performance Verification, includes instructions for making
the front-panel settings required to check AWG2021 characteristics.
How to Power On
To power-on the AWG2021, follow these steps:
1. Set the PRINCIPAL POWER SWITCH (on the back of the AWG2021) to
the ON position. This switch is the main power switch; it routes power to the
standby circuit in the AWG2021.
2. Then, press the ON/STBY (standby) switch on the front (lower-left corner)
of the AWG2021. This switch applies power to the remaining circuits of the
AWG2021. Allow at least 20 minutes for the AWG2021 to warm up.
WARNING.
To avoid personal shock hazard, turn off both the ON/STBY switch
and the PRINCIPAL POWER SWITCH before servicing. The PRINCIPAL
POWER SWITCH on the rear panel is the true power disconnect switch. The
ON/STBY (standby) switch simply toggles operation on and off. When connected
to a power source and when the PRINCIPAL POWER SWITCH is on, the
internal power supplies and much of the other circuitry of the AWG2021 remain
energized regardless of the setting of the ON/STBY switch.
To avoid personal shock hazard, set the PRINCIPAL POWER SWITCH off before
connecting or disconnecting the line cord to or from the power source.
Internal Diagnostics and Calibration Routines
At power-on, the AWG2021 performs internal start-up diagnostics. These
diagnostics check internal circuit function and report any failures. In addition,
you can initiate internal diagnostics using the Diag/Cal item in the UTILITY
menu; these diagnostics differ from the start-up diagnostics in that they do more
extensive memory checking.