Agilent Technologies 1670G Series Service Manual page 174

Replacing Assemblies
To remove and replace the power supply
To remove and replace the power supply
Using previous procedures, remove the following assemblies:
1
•
Handle
•
Rear Feet
•
Cover
•
Disk Drive Assembly
•
Acquisition Board
•
CPU Board
•
Rear Panel
Hazardous voltages exist on the power supply. To avoid electrical shock, disconnect the
W A R N I N G
power from the instrument before performing the following procedures. After disconnecting
the power, wait at least three minutes for the capacitors to discharge before continuing.
Disconnect the power switch cable from the power supply power on/off connector.
2
Using a Torx T-15 screwdriver, remove two screws on the bottom toward the front
3
of the instrument that secure the power supply to the bottom of the chassis..
Loosen the remaining two T-15 screws on the bottom toward the rear of the
4
instrument.
Slide the power supply toward the rear of the instrument approx. 12 mm (1/2) inch),
5
then lift the power supply out of the chassis
Unplug the power supply output cables and power sense cables from the power
6
supply.
When installing the power sense cable, ensure each cable is plugged onto the correct
connectors of the power supply.
Using a Torx T-15 screwdriver, remove two screws that secure the power supply
7
bracket to the power supply.
Reverse this procedure to install the power supply.
Check that the LCD Display is properly installed before installing the power supply.
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