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Agilent E4418B/E4419B Service Guide Contents-3
Procedure ................................................................................ 3-11
Theory of Operation........................................................................... 1
Introduction................................................................................... 4-2
A1 Power Supply/Battery Charger .............................................. 4-3
A2 Processor Assembly................................................................. 4-4
A3 Front Panel Assembly............................................................. 4-7
A4 Comms Assembly .................................................................... 4-8
A5 Daughter Assembly................................................................. 4-9
A6 Measurement Assembly.......................................................... 4-10
A8 Rechargeable Battery Assembly............................................. 4-12
Replaceable Parts ............................................................................... 1
Introduction................................................................................... 5-2
Assembly Part Numbers............................................................... 5-3
Power Supply Assembly Types .............................................. 5-5
Front Panel Connector Repair ..................................................... 5-6
Firmware Upgrades...................................................................... 5-7
Downloading Firmware.......................................................... 5-7
Assembly and Disassembly Guidelines ....................................... 5-8
Removing the Power Meter Cover......................................... 5-8
Removing the A1 Power Supply Assembly ........................... 5-9
Removing the A2 Processor Assembly................................... 5-10
Removing the A4 Comms Assembly...................................... 5-11
Removing the A5 Daughter or A6 Measurement Assemblies5-12
Removing the A7 Fan Assembly............................................ 5-13
Removing the Power Meter RAM Battery (BT1).................. 5-14
Removing the A3 Front Panel Assembly............................... 5-15
Replacing the Front Panel Power Reference Cable Assembly.5-18
Replacing the Rear Panel Power Sensor Cable Assemblies
(Options 002 and 003) ............................................................ 5-19
Replacing the Rear Panel Power Reference Cable Assembly
(Option 003) ............................................................................ 5-21
Replacing the Rear Panel Recorder Output Cable Assembly.5-22
Replacing The Chassis Assembly .......................................... 5-23
Troubleshooting .................................................................................. 1
Introduction................................................................................... 6-2
Suggested Diagnostic Equipment.......................................... 6-2
Measurement Uncertainty Analysis Instrument Accuracy Test1
Measurement Introduction...........................................................A-2
Uncertainties ..........................................................................A-3
Define the Measurand............................................................A-3