Technical data

Chapter 3 3-3
Adjustments and Correction Constants
Post-Repair Procedures
Post-Repair Procedures
Table 3-1 lists the additional service procedures which you must perform to ensure that
the instrument is working correctly, following the replacement of an assembly. Unless
otherwise noted, these procedures can be located in either Chapter 2 , “Performance Tests,”
or in this chapter, “Adjustments and Correction Constants.”
Perform the procedures in the order that they are listed in the table.
Table 3-1 Related Service Procedures
Replaced
Assembly
Adjustments/ Correction Constants
(Chapter 3)
Verification (Chapter 2)
A1 Front Panel
Keyboard
None — Service Test 0 (Chapter 10)
— Service Test 23 (Chapter 10)
A2 Front Panel
Interface
None — Service Test 0 (Chapter 10)
— Service Test 23 (Chapter 10)
— Service Test 12 (Chapter 10)
— Tests 66–80
A3 Source — A9 Switch Positions
— Source Def CC (Test 44)
— Pretune Default CC (Test 45)
— Analog Bus CC (Test 46)
— Source Pretune CC (Test 48)
— RF Output Power CC (Test 47)
— Sampler Magnitude and Phase CC
(Test 53)
— Cavity Oscillator Frequency CC
(Test 54)
— Source Spur Avoidance Tracking
— EEPROM Backup Disk
— Source Frequency Range and
Accuracy
— Source Power Range, Linearity, and
Accuracy
— Source and Receiver Harmonics
(Option 002 only)
A4/A5/A6
Samplers
—A9 Switch Positions
— Sampler Magnitude and Phase CC
(Test 53)
— IF Amplifier CC (Test 51)
— EEPROM Backup Disk
— Minimum R Channel Level
(if R sampler replaced)
— Receiver Input Crosstalk
— Receiver Magnitude Frequency
Response
A7 Pulse
Generator
—A9 Switch Positions
— Sampler Magnitude and Phase CC
(Test 53)
— EEPROM Backup Disk
— Receiver Magnitude Frequency
Response
— Source Frequency Range and
Accuracy
A8 Post
Regulator
—A9 Switch Positions
— Cavity Oscillator Frequency CC
(Test 54)
— Source Spur Avoidance Tracking
— EEPROM Backup Disk
— Service Test 0 (Chapter 10)
— Check A8 test point voltages
A9 CPU
(EEPROM
Backup Disk
Available)
—A9 Switch Positions
—Load Firmware
— Serial Number CC (Test 55)
— Option Number CC (Test 56)
— Correction Constants Retrieval
— Operator's Check
— Service Test 21 (Chapter 4)
— Service Test 22 (Chapter 4)