To remove and replace the power supply
1Using previous procedures, remove the following assemblies:
•Handle
•Rear Feet
•Cover
•Disk Drive
WARNING 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 three minutes for the capacitors to discharge before servicing the
instrument.
2Lift the PCB locking pins out of the chassis.
3Slide the power supply out far enough to reach the power supply cables, then
disconnect them from the power supply.
4Slide the power supply the rest of the way out the side of the instrument.
5Reverse this procedure to install the power supply.
Check that the following assemblies are properly installed before installing the power supply:
•Monitor
•Front Panel
•Switch Actuator
•Main Circuit Board
To remove and replace the Main Circuit board
1Using previous procedures, remove the following assemblies:
•Handle
•Rear Panel
•Cover
•Disk Drive
•Power Supply
2Disconnect the GPIB and RS-232C cables from the Main Circuit board.
3Disconnect the front panel cable from the Main Circuit board.
4Disconnect the monitor board cable from the Main Circuit board.
5Slide the board out the rear of the instrument.
6Reverse this procedure to install the Main Circuit board.
Check that the following assemblies are properly installed before installing the Main Circuit
board:
•Monitor
•Front Panel
•Switch Actuator
Replacing Assemblies
To remove and replace the power supply
6–7