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World of Ham Radio 1997
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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 # 895
MODEL: TS-430S
SUBJECT: PLL Unlock at High Temperatures (Revision)
This service bulletin supercedes bulletin 891, which concerned low input
level to IC-16 as the radio warmed up. This bulletin incorporates
information contained in Bulletin 891 plus additional information.
PROCEDURE:
On the Control Unit (X53-1290-XX)
Check transistor Q8. If it is not a 2SC1815Y change it to this type
(Serial numbers 408XXXX-509XXXX).
For serial numbers before 408XXXX change R29 to 820 ohms and C41 to 100 pF.
In addition to the changes listed above check for the following signals:
(You must check these at a dial frequency of exactly 14.000.000 MHz)
TP-1 6.0v (L18 adjusts)
TP-2 70 MHz
TP-3 45.3 MHz
TP-4 6.35v (L10 adjusts)
Time required for this modification is 1 hour or less.