6 Replaceable Parts
146 Keysight 34420A Service Guide
Replaceable Parts
This chapter contains information ordering replacement parts for your meter. The
parts lists are divided into the following four groups.
– Input Connector Replaceable Parts
– Main PC Assembly, 34420-66501
– Display and Keyboard PC Assembly, 34420-66502
– Mainframe Parts List
Parts are listed in alphanumeric order according to their schematic reference
designators. the parts lists include a brief description of the part with applicable
Keysight part numbers and manufacturer part number.
To Order Replace Parts
You can order replaceable parts from Keysight using the Keysight part number or
directly from the manufacturer using the manufacturer's part number. To order
replaceable parts from Keysight, do the following:
1 Contact your nearest Keysight Sales Office of Keysight Service Center.
2 Identify the parts by the Keysight part number shown in the replaceable parts
list.
3 Provide the instrument model number and serial number.
Backdating and Part Changes
Always refer to Chapter 7, "Backdating" before attempting repair or before
ordering replacement parts. Parts changes are documented in the backdating
chapter.
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