Agilent Technologies ESG Series Installation Note page 6

Installation Procedure
Save all hardware so it can be re-installed.
Before you disassemble the instrument, turn the power switch off
WARNING
and unplug the instrument. Failure to unplug the instrument can
result in personal injury.
Electrostatic discharge (ESD) can damage or destroy electronic
CAUTION
components. All work on electronic assemblies should be performed at a
static-safe workstation.
Remove the Instrument Covers
1. Remove the strap handles (item 1) from each side of the signal generator by loosening the two
screws (item 2) on each handle. Refer to
2. Remove the four bottom feet (item 3).
3. Remove the rear four feet (item 4) from the signal generator by removing the four screws (item 5)
that secure them.
4. Slide the instrument cover (item 6) off the back of the signal generator.
5. Remove the top cover by removing the 11 screws that secure it.
6. Remove the bottom cover by removing the 15 screws that secure it.
Remove A14Q501 from the CPU/Motherboard
1. Turn the signal generator upside-down and remove the screw (item 2) from the transistor A14Q501
that is attached to the CPU/Motherboard (A14). Refer to
2. Desolder the three leads of A14Q501 and remove the transistor. Remove all excess solder from the
three lead holes.
Add the 3 Pin Connector Header to the CPU.Motherboard
1. From the top of the CPU/Motherboard, insert the 3 pin connector header (1252-3332) into the three
holes vacated by A14Q501. Refer to
NOTE Insert the 3 pin connector header so that the large open long slot in the connector
is facing towards connector J6. This connector is meant to be positioned one way
for polarity purposes regarding Q501.
2. From the bottom side of the CPU/Motherboard, hand solder the three leads of the 3 pin connector to
the CPU/Motherboard.
3. Now insert screw (0515-0372) to secure the CPU/MOtherboard to the chassis into the hole directly
adjacent to the previous hole that held A14Q501. Torque the screw to 9 inch-lbs. Refer to
Relocate Q501 with Wiring Harness to the Instrument Chassis
The purpose of this procedure is to provide a process for attaching a new Q501 to the instrument
chassis and then attaching Q501's wiring harness into the new A14 motherboard. The relocation of
Q501 to the instrument chassis eliminates mechanical stress imposed upon this component.
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Figure 1.
Figure
Figure 5.
2.
Installation Note E4400-90379
Figure 3.