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                             K E N W O O D
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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 # 1003
MODEL: TS-950SDX
SUBJECT: K1EA Ver.8 Program

We have received several reports of the transmitter unkeying when using 
the K1EA Contesting program. This symptom only occurs when the TS-950SDX 
is used with version 8 of the K1EA program.  Apparently some of the more 
advanced control features of this new version of the program cause the 
radio to think the program has unkeyed.  A new EPROM is available that 
corrects this transmitter drop out.    

Procedure:

1. Remove the top and bottom covers of the TS-950SDX.
2. Carefully unplug the two DSP unit cables from the rear of the
   transceiver.
3. The front panel of the radio is desiged to allow it to be tilted forward
   for ease of service.  To tilt the front panel forward remove the screw 
   at the top of the brackets that secure the front panel to the chassis.  
   (Please refer to the accompanying diagram.)  There is one screw on each 
   side of the front panel.  
4. Next loosen the remaining screw at the bottom of each bracket.  
5. Gently pull the bottom of the front panel forward until it reaches the
   end of the slot in the bracket and gently pull the top of the front panel 
   down.
6. Now look at the circuit board mounted vertically on the main chassis. 
   This is the Digital Unit (X46-3130-11).  Near the center of this board 
   you will find the lithium battery for memory backup and a large IC 
   installed in a socket.  This is the EPROM.
7. Carefully remove the IC from the socket. Use an IC puller or very
   gently pry it out by slipping a small flat tool between the IC and the 
   socket. Do not use excessive pressure as you can damage the circuit 
   board if you pry too hard!
8. Take the new EPROM and carefull install it in the now vacant socket. 
   Note that the notch on the end of the EPROM should be down.
9. Reverse steps 1 through 5 to reassemble.  Make certain you do not pinch 
   any wires when you return the front panel to its vertical position.
10.You will need to reset the microprocessor after the radio is
   reassembled. This is done by pressing and holding the A=B key while 
   the power is turned on, and then release the key.

Time required for this modification is 30 minutes or less.