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                        Kenwood Service Centers

   Kenwood Service Corporation             Kenwood Service Center, East
   2201 East Dominguez Street              829 Lynnhaven Parkway, Suite 130
   Long Beach, California 90801            Virginia Beach, Virginia 23452
   Telephone 1-310-639-5300                Telephone 1-804-340-1702

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BULLETIN # 868
MODEL: TS-930S
SUBJECT: LOW RECEIVE SENSITIVITY


A loss of receiver sensitivity (6-30db) may be caused by shorted 
switching diodes in the Signal Unit (X57-1000-XX). 

The following procedure will increase the capability of the unit to 
withstand high RF voltage levels.

PROCEDURE:

Signal Unit (X57-1000-XX)

1. Replace Signal unit jumper J27 with an XZ-070 zener diode. 
   tHIS JUMPER IS CONNECTED TO Q93. THE ANODE GOES AWAY FROM Q93.

2. Change diodes D15 through D33 from BA282's to ls2588's.

   Change only the defective diodes when making the repair.

3. Figure 3 shows a circuit that is capable of withstanding antenna 
   input levels of up to 50 Watts. Use this on units that may be subject 
   to high levels of RF. (This is an optional chanqe that may not be done 
   in warranty.)