Replaceable Parts
Assembly and Disassembly Guidelines
Replacing The Chassis Assembly
1. Remove the Power Meter Cover as shown in ?Removing the Power
Meter Cover?, on page 5-7.
2. Disassemble the power meter down to allow access to the rear panel
connectors (Refer to ?Removing the A4 Comms Assembly?, on
page 5-11).
3. For Standard or Option #002 models, disconnect the Power Reference
Cable from the Front Panel Assembly.
4. For Option #003 units, disconnect the Power Reference Cable from the
Chassis Assembly (rear panel).
5. Remove the A3 Front Panel Assembly as shown in ?Removing the A3
Front Panel Assembly?, on page 5-15.
6. For Option #002 or Option #003 models, remove the Rear Panel Power
Sensor Cable Assemblies as shown on ?Replacing the Rear Panel Power
Sensor Cable Assemblies (Options 002 and 003)?, on page 5-19.
7. For Option #003 units, remove the Rear Panel Power Reference
Connector as shown on ?Replacing the Rear Panel Power Reference
Cable Assembly (Option 003)?, on page 5-21.
8. Remove the Recorder Output(s) Cable Assembly as shown on
?Replacing the Rear Panel Recorder Output(s) Cable Assembly?, on
page 5-22.
9. Remove all blanking plugs from the rear panel.
10.Obtain the new Chassis Assembly, and then re-assemble the Power
Meter by following steps 1 to 9 in reverse order.
WARNING When replacing the power supply unit in the power meter,
ensure that all earth wiring is reconnected. There are two
terminals to check, the first is the force fit connector to the
power supply unit and the second a closed loop terminal
bonded to the chassis with an M3.5 machine screw (use a
9 lb/in T15 screw driver). All the protective earth wiring can
be identified by the insulation color green with a yellow
stripe.
WARNING Once re-assembly is complete, the unit must be safety-tested in
accordance with local guidelines and procedures. This
safety-test may take the form of an Earth Continuity Test,
Hi-Pot Test, etc.
Agilent E4416A/E4417A Service Guide5-23 |
ACEC
