Agilent Technologies 66000A, Service Manual, Page: 15 / 53

Disassembly 15
3
Disassembly
This chapter provides disassembly and reassembly instructions for the Agilent 66000A MPS Mainframe. Refer to Chapter 6
for an exploded view diagram of the mainframe. Major mechanical components are identified with "MP" designations and
are referenced in this section. Refer to Chapter 5 for the component descriptions. Refer to Chapter 1 for the tools required to
disassemble and reassemble the unit.
Disassembly Procedures
SHOCK HAZARD To avoid the possibility of personal injury, remove the mainframe from operation
before removing the top cover. Turn off ac power and disconnect the line cord, GPIB cable, and load leads
before attempting any disassembly.
When servicing the Main assembly and Backplane assembly, ac line voltages are present on the Main board
and backplane connectors.
Most of the attaching hardware is metric. Use of other types of fasteners will damage threaded inserts.
Removing the Modules and Module Connectors
Before you can disassemble the mainframe, you must first remove all of the power supply modules as well as the module
connectors on the back of the mainframe.
1. Use the slot-head screwdriver and release the pull tab at the front of each module.
2. Pull all of the modules out of the mainframe.
3. Use the Pozi driver and disconnect all of the module connectors from the back of the mainframe.
Removing the Cover
1. Use the T25 driver and remove the four screws that attach the handles (MP22) to the chassis .
2. Slide the cover (MP6) back, spread the sides slightly, and lift the cover up.
3. Lift the top tray (MP3) out of the chassis.
Removing the Front Frame
The cover must be removed from the unit before you can remove the front frame.