Keithley SourceMeter 3A 2420, Service Manual

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6-2 Replaceable Parts
Introduction
This section contains replacement parts information and component layout drawings for the
Model 2420.
Parts lists
The electrical parts lists for the Model 2420 are shown tables at the end of this section. For
part numbers to the various mechanical parts and assemblies, use the Miscellaneous parts list
and the assembly drawings provided at the end of Section 5.
Ordering information
To place an order, or to obtain information concerning replacement parts, contact your Kei-
thley representative or the factory (see inside front cover for addresses). When ordering parts, be
sure to include the following information:
• Instrument model number (Model 2420)
• Instrument serial number
• Part description
• Component designation (if applicable)
• Keithley part number
Factory service
If the instrument is to be returned to Keithley Instruments for repair, perform the following:
• Call the Repair Department at 1-800-552-1115 for a Return Material Authorization
(RMA) number.
• Complete the service form at the back of this manual, and include it with the instrument.
• Carefully pack the instrument in the original packing carton.
• Write ATTENTION REPAIR DEPARTMENT and the RMA number on the shipping
label.
Component layouts
The component layouts for the various circuit boards are provided on the following pages.
Drawings include:
• Analog board — 2430-100
• Display board — 2400-110
• Digital board — 2420-140