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World of Ham Radio 1997
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WOHR97_AmSoft_(1997-02-01).iso
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asb0865.txt
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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 # 865
MODEL: TS-430S
SUBJECT: TS-430S 500KHZ Hetrodyne
Some users of the TS-430S have reported a hetrodyne signal at the 500KHZ
point on the bands. This tone may be reduced or eliminated by the following
procedure.
PARTS REQUIRED
QTY DESCRIPTION KENWOOD PART NUMBER
l .00lpf disc cap CC45B1H102K
l 220pf disc cap CC45SL1H221J
l 470uh coil L40-4711-13
PROCEDURE
1. Remove top and bottom covers.
2. Turn radio bottom up and locate PLL Unit (X50-1910-00).
3. Remove the six (6) screws securing the PLL unit to the chassis
and fold the unit over to allow access to the foil side of the
circuit board.
4. Remove the jumper wire that is installed between TP-1 and C6.
Install the parallel circuit consisting of the 220pf capacitor and
the 470uh coil in its place.
5. Install the .001pf capacitor between the foil that contains TP-1
and groung (edge of board)
6. Reinstall the PLL unit and replace the top and bottom covers.
7. No alignment is required.
*NOTE: This change may be performed at the owners option and may not
be performed in warranty.