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World of Ham Radio 1997
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WOHR97_AmSoft_(1997-02-01).iso
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1997-02-01
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==============================================================================
K E N W O O D
>>> A M A T E U R R A D I O S E R V I C E B U L L E T I N <<<
==============================================================================
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
==============================================================================
BULLETIN # 960
MODEL: TS-950S/SD
SUBJECT: LOW VS-2 AUDIO
Early TS-950S Digital transceivers will not produce sufficient audio
from the optional VS-2 voice synthesizer. The following modification
will correct this condition.
NOTE: This modification has already been performed on models starting
with serial number 103XXXX.
REQUIRED PART: 47K OHM CHIP RESISTOR PART # RK73FB2A473J
1. Disconnect the power cord and antenna.
2. Remove the top and bottom covers (18 screws).
3. Remove the top screw from each side of the front panel assembly.
4. Loosen the bottom screw on each side of the front panel assembly.
5. Pull the front panel assembly forward to expose the Digital and
Control boards.
6. Remove the two screws that secure Control board B/3 to the top of the
chassis and swing the board out of the way.
7. Remove the 4 screws from Control board A/3 and rotate the board down.
THIS WORK WILL BE DONE ON THE FOIL SIDE OF CONTROL BOARD A/3.
1. Desolder and discard chip resistors R30 and R31.
2. Install a 47K ohm chip resistor in place of R30. Do not use
R31 (47K ohm) in the R30 position. Use a new resistor.
3. Reassemble the transceiver.
This modification is covered under the 1 year warranty.
Time required to perform the modification is 1 hr or less.