
76 Chapter 3
Troubleshooting
Manual Troubleshooting Procedures (Step 4)
A2A32 Signaling
Source/Analyzer
AF Diagnostics:
Audio
Frequency
Generators 1 and 2
No
A2A31 Controller Functional
Diagnostics: Self
Test
Yes
A2A30 Memory/SBRC Functional
Diagnostics: Self
Test
No
A2A115 Downconverter RF Diagnostics:
Downconverter
Yes
A3A1 Power Supply
Regulator
Functional
Diagnostics: Self
Test
No
A21 Fan No
A2A50 Display Drive Functional
Diagnostics: Self
Test
No
A23 Power
Supply
Functional
Diagnostics: Self
Test
No
A2A25 Signal
Generator
Synthesizer
RF Diagnostics:
Signal Generator
Synthesizer
RF Generator:
Harmonic and
Spurious Spectral
Purity
Yes
A2A120 LO-IF/IQ Modulator CDMA Diagnostics
LO_IF/IQ Mod.
SERVICE4:
IQ Modulator,
Eb/No
Yes
A2A24 RF Output RF Diagnostics:
Output
Yes
A2A23 Reference RF Diagnostics:
Reference
RF Generator:
Residual FM
Yes
A2A22 Receiver
Synthesizer
RF Diagnostics:
Receiver
Synthesizer
RF Analyzer:
Residual FM
Yes
A2A100 CDMA Generator
Reference
CDMA Diagnostics:
CDMA Gen. Ref.
SERVICE4:
IQ Modulator,
Eb/No
Yes
A2A21 Receiver RF Diagnostics:
Receiver
RF Analyzer:
FM Accuracy
Yes
A3 Power Supply No
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
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