To remove and replace the power supply – HP 16500B User Manual
Page 81
To remove and replace the power supply
W A R N I N G
Hazardous voltages exist on the power supply. To avoid electrical shock, disconnect the
power from the instrument before performing the following procedures. After disconnecting
the power, wait at least six minutes for the capacitors on the power supply board to
discharge before servicing the instrument. However, if the AC LED on the power supply has
any illumination, a significant charge remains on the capacitors.
HP 16500B
1
Using previous procedures, remove the following assemblies:
•
Top cover
•
Flexible disk drive assembly
•
Optional module card or filler panel in the top slot of the card cage
2
Remove the power supply rear panel.
3
Disconnect the color display to power supply cable from the power supply.
4
Remove the four power supply mounting screws.
5
Pull the power supply towards the rear panel of the mainframe until the power
supply disconnects from the mother board connector.
6
Lift the front end of the power supply and guide it out of the mainframe.
7
Reverse this procedure to install the replacement power supply.
Before pushing the power supply into place, make sure that it is properly aligned with the
front connector of the mother board and with the rail guides of the card cage.
HP 16501A
1
Using previous procedures, remove the following assemblies:
•
Top cover
•
Optional module card or filler panel in the top slot of the card cage
2
2
Remove the power supply rear panel.
3
Remove the four power supply mounting screws.
4
Pull the power supply towards the rear panel of the expansion frame until the power
supply disconnects from the mother board connector.
5
Lift the front end of the power supply and guide it out of the expansion frame.
6
Reverse this procedure to install the replacement power supply.
Before pushing the power supply into place, make sure that it is properly aligned with the
front connector of the mother board and with the rail guides of the card cage.
Replacing Assemblies
To remove and replace the power supply
6–6