Tektronix 070-8030-01 User Manual
Troubleshooting
1780R-Series Service Manual
6–17
Assembly and Circuit Numbering. All circuit board assemblies are assigned
assembly or “A” numbers. Table 6–3 and Figure 6–5 show the assembly
numbers and their locations for this instrument.
assembly or “A” numbers. Table 6–3 and Figure 6–5 show the assembly
numbers and their locations for this instrument.
NOTE. Always check the parts list for part numbers and descriptions when
ordering replacement parts. Some parts may have been replaced or have a
different value in an individual instrument.
ordering replacement parts. Some parts may have been replaced or have a
different value in an individual instrument.
Table 6–3: Circuit Board Assemblies
Assembly Number
Board Name
A1
Low Voltage Power Supply and Waveform Monitor High Voltage Supply
A2
Waveform Monitor
A3
Vectorscope High Voltage Supply
A4
Z-Axis
A5
Microprocessor
A6
Vectorscope
A7
Oscillator
A8
Input including BNC
A9
Front Touch Panel
A10
Microprocessor Annex
A11
Interconnect
A12
Front Switch Panel
A13
Vectorscope Graticule Lights
A14
Waveform Monitor Graticule Lights
A15
Filter
A16
Waveform High Voltage Supply
A17
Fuse