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Front End Control Troubleshooting
A15 Front End Control Description
The table below describes the connector location and the final destinations of
the RF signal, switch control logic or bias voltage.
Table 5-2 A15 Connectors and Destinations
A15 Connector
Designation
Description Destination
FEC EFEC
N/A J900 Narrowband I.F. Out To A2
N/A J901 Wideband I.F. Out To A3 or A25
N/A J902 322.5 MHz I.F. In From A13
N/A J1100 Aux I.F. Out To Rear Panel
N/A J1300 Switched I.F. Filter Out Reserved for future use
N/A J801 YTF Bypass Out To SW1 & SW3 (Option MPB with Option
513 or 526)
J103 J700 Low Band Switch Logic Out To A11
J801 J800 Mechanical Attenuator Logic Out To A9 & A10
J302 J301 Sweep Out Reserved for future use
J104 J102 R.F. Front End Logic Out To A13
J300 J302 Preselector Tune Out N/A (test point only)
J301 J300 YTF Bias Control Out To A12
N/A J802 Low Noise Bypass Switch Logic Out Reserved for future use
J100 J100 Motherboard Connector From A8
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