VS1 Troubleshooting Manual
Detailed Circuit Descriptions
Issue 10.0 2018-10-29
Page 2-1
Section 2:
Detailed Circuit Descriptions
Refer to the functional block diagram:
“
Block Diagram - VS1 Transmitter
” on page 1-7
and high
level descriptions of the
VS1 Operation and Maintenance Manual
.
This section provides a detailed description of the transmitter’s key modules and assemblies,
including:
•
Exciter/control PWB (NAPE87B) - see page 2-1
•
PS distribution PWB (NAPS41A) - see page 2-2
•
Pre-amp/IPA PWB (NAPA28B) - see page 2-3
•
Power amplifier PWB (NAPA23/03A) - see page 2-4
VS1 electrical schematics
The descriptions in this section all refer to the VS1 electrical schematics listed in
Table 5.1 on page 5-
4
of the
VS1 Troubleshooting Manual
.
Exciter/control PWB (NAPE87B)
Detailed theory for the exciter/control PWB (A1) is not included in this manual.
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