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Chapter 4 Calibration and Adjustment
Calibration Security
4
To Unsecure the Instrument Without the Security Code
To unsecure the instrument without the correct security code, follow the
steps below.
See “Electrostatic Discharge (ESD) Precautions” on page 143 before
beginning this procedure.
1 Disconnect the power cord and all input connections.
2 Disassemble the instrument using the “General Disassembly Procedure”
on page 158.
3 Apply a temporary short between pin 1 and pin 6 of the header on the
main board. The general location is shown in the figure below.
4 Apply power and turn on the instrument.
WARNING Be careful not to touch the power line connections or high voltages on the
power supply module. Power is present even if the instrument is turned
off.
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