4 Troubleshooting and Diagnostics
84 Keysight 34980A Service Guide
For the 34921A, relay and fuse part numbers are given on page 126 and the
component locator is shown on page 135. The table below shows the relationship
of channel numbers to relay numbers.
Bank 1 Bank 2
Channel Relay Channel Relay
001 K601 021 K721
002 K602 022 K722
003 K603 023 K723
004 K604 024 K724
005 K605 025 K725
006 K606 026 K726
007 K607 027 K727
008 K608 028 K728
009 K609 029 K729
010 K610 030 K730
011 K611 031 K731
012 K612 032 K732
013 K613 033 K733
014 K614 034 K734
015 K615 035 K735
016 K616 036 K736
017 K617 037 K737
018 K618 038 K738
019 K619 039 K739
020 K620 040 K740
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