34 Chapter 1
Overview
Replacement Assemblies
Replacement Assemblies
The instrument assemblies are not repairable to the component level.
Refer to Chapter 11 to determine how to disassemble and assemble the
instrument. The following assemblies must be replaced as an assembly.
• A1 flat panel display
• A2 front panel interface assembly (includes inverter boards)
• A3 keyboard (does not include keypads)
• A5 power supply assembly
• A6 SCSI board
• A7 digital IF assembly
• A8 analog IF assembly
• A9 2nd LO/fan control assembly
• A10 3rd converter assembly
• A11 reference assembly
• A12 Synthesizer assembly
• A12A1 LO/synthesizer board
• A12A2 sampling oscillator board
• A13 Front end driver assembly
• A14 Input attenuator A/switch
• A15 Input attenuator B
• A18 YTO
• A19 RYTHM (models up to 26.5 GHz)
• A19 SBTX/RYTHM (43 to 50 GHz models)
• A20 Low band assembly
• A21 SLODA (models up to 26.5 GHz)
• A21 FELOMA (43 to 50 GHz models)
• A22 Preamplifier (option 1DS)
• A23 disk drive assembly
• A25 motherboard
• A26 CPU (processor) assembly (does not include A26A1 or A26A2)
• A26A1 DRAM card
• A26A2 Flash memory board
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