
Theory of Operation, Operating Instructions and Maintenance
Sections
Series 4520 Replacement Parts List
Item Qty. Description Part Number
1 1 Mounting panel
(Comprises: M=meter, E=element socket,
S=switch
Model 4521 (1M, 1E)
Model 4522 (1M, 2E, 1S)
Model 4523 (1M, 1E)
Model 4525 (1M, 1E)
Model 4526 (2M, 2E)
Model 4527 (2M, 2E)
4521-002
4522-006
4523-002
4525-002
4526-004
4527-005
2 1 Line section assembly
Model 4521/23/25
Model 4522/26
Model 4527
4230-018
4522-002
4527-002
3 2 RF connectors See Model 43
Replacement
parts list
Maintenance
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