Specifications

Chapter 3 77
Troubleshooting
Manual Troubleshooting Procedures (Step 4)
A2A20 Spectrum
Analyzer
RF Diagnostics:
Spectrum Analyzer
Spectrum Analyzer Yes
A2A70 Control
Interface
Functional
Diagnostics: Self
Test
No
A2A44 Modulation
Distribution
AF Diagnostics:
Mod
Distribution
Internal Paths
AF Generator: AC
Level Accuracy
SERVICE4:
Periodic
Calibration:
AF Gen Gain,
EXT Mod Path
Gain
Yes
A2A80 Audio
Analyzer 1
AF Diagnostics:
Audio Analyzer 1
Internal Paths
SERVICE4:
Periodic
Calibration:
Audio Analyzer
Offset
Yes
A2A40 Audio
Analyzer 2
AF Diagnostics:
Audio
Analyzer 2
AF Analyzer:
AC Voltage
Accuracy
SERVICE4:
Periodic
Calibration:
VFN
Yes
A2A33
Measurement
4
Functional
Diagnostics: Self
Test
Oscilloscope SERVICE4:
Periodic
Calibration:
Voltmeter
Reference
Yes
A2A1 Motherboard No
1. See Chapter 4 , “Preventative Maintenance,” on page 93.
2. SeeChapter 7 , "Periodic Adjustments" on page 157.
3. See Table 7-1 on page 159.
4. Measurement checked indirectly by all diagnostics.
Table 3-2 Relating Assemblies to Troubleshooting Aids
Ref.
Designator
Assembly Name SERVICE4
Program
Diagnostic Test:
Sub-Test
Performance
Test to Perform
1
Periodic
Calibration
2
Program
Cal.-Data
Needed
3