5-1
5 Service
This chapter provides procedures for troubleshooting your instrument to the assembly
level. It is organized in four sections.
• Chapter 5
— introductory information
— shipping instructions
— complete list of equipment required for all adjustments and performance tests
— post-repair instructions
— safety notes
• Chapter 5a
— simplified block diagram of instrument’s operation
— theory of operation for each major assembly
• Chapter 5b
— troubleshooting checklist
— ac mains (line) fuse removal
— modulation test points and power supply LEDs diagram
— power supply distribution diagram
— instrument block diagram
• Chapter 5c
— service error messages including description of the error, possible causes, and
resolutions
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