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2. Service
Functional-Group-Diagnostic Trees (Diagnostic Section 2)
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Functional-Group-Diagnostic Trees
(Diagnostic Section 2)
This section provides functional-group-level diagnostic trees for the 5071A
Primary Frequency Standard.
Functional-group diagnostic trees necessarily evaluate two or more
assemblies/modules when such operation is interactive. The cumulative
operation of the constituent parts is analyzed as a whole.
When possible, an assembly or module is isolated to fault-status within the
functional-group diagnostic tree. At other times, the functional-group tree
points to individual assembly/module diagnostic trees located in section 3.
The names of the functional-groups are listed below in order with the
assemblies and modules that comprise them:
1 Power-supply diagnostic tree: 2.1.1.1.0
•
A1 motherboard assembly
•
A11 Power steering logic assembly
•
A12 Dc-to-Dc Converter module
•
LF1 Line filter module/cable assembly
•
T1 Toroidal power transformer
•
B1 24V Internal-Standby Battery. (Does not apply for Opt. 048).
2 Analog-signal chain diagnostic tree: 2.2.1.0
•
A6 Servo assembly
•
A14 Signal amplifier module
3 RF-chain diagnostic tree: 2.3.1.0
•
A4 Digital Synthesizer assembly
•
A5 87 MHz PLL module
•
A9 Frequency multiplier module
•
A10 Output frequency distribution amplifier module
•
A15 9.2 GHz microwave module
•
A18 9.2 GHz PLL module
•
A19 Reference oscillator module
4 C-field diagnostic tree: 2.4.1.0
•
A7 Interface assembly
•
A17 Cesium-beam tube assembly
Содержание 5071A
Страница 2: ......
Страница 40: ...1 Performance Tests Verifying Specifications 5071A Complete Performance Tests 24 ...
Страница 48: ...2 Service Pre Troubleshooting Information 32 Figure 2 1 Instrument Top View ...
Страница 147: ...3 Theory of Operation Functional Block Descriptions 131 Figure 3 2 5071A Overall Block Diagram ...
Страница 148: ...3 Theory of Operation Functional Block Descriptions 132 Figure 3 2 5071A Overall Block Diagram Continued ...
Страница 164: ...3 Theory of Operation Functional Block Descriptions 148 Figure 3 3 A1 Power Supply Distribution Schematic Diagram ...
Страница 166: ...3 Theory of Operation Functional Block Descriptions 150 Figure 3 4 A1 Slot Module Interconnect Diagram ...
Страница 168: ...3 Theory of Operation Functional Block Descriptions 152 Figure 3 5 Power Supply Block Diagram ...
Страница 171: ...3 Theory of Operation Functional Block Descriptions 155 Figure 3 7 Opt 048 A1 Slot Module Interconnect Diagram ...
Страница 172: ...3 Theory of Operation Functional Block Descriptions 156 Figure 3 8 Opt 048 Power Supply Block Diagram ...
Страница 173: ......
Страница 175: ...3 Theory of Operation Functional Block Descriptions 159 Figure 3 9 A1 Component Locator Diagram ...
Страница 194: ...5 Replaceable Parts How To Order A Part 178 ...
Страница 197: ......