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World of Ham Radio 1997
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WOHR97_AmSoft_(1997-02-01).iso
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asb1045.txt
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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 # 1045
MODEL: TS-950SDX
SUBJECT: No VFO B after "Split"
Symptom:
Using the following key sequence will result in a failure to receive on
VFO B.
1. Select different frequencies for VFO A and B. (Example 14.019 for VFO A
and 14.018 for VFO B, Mode SSB, 2.7 KHz FILTER for 455 KHz and 8.83 MHz.)
2. Select VFO A to RX and VFO B to TX. Then press the TF-W key.
3. Press the ENT key and select a frequency in the 7 MHz band. (For example
7.018 MHz for VFO A and 7.019 MHz for VFO B.)
4. Press the ENT key and reselect the 14 MHz band.
5. Change VFO B from TX to RX. The FILTER display for 8.83 dissappears and
reception is disabled on VFO B.
Countermeasure:
Press the 8.83 MHz FILTER select key one time, or replace the ROM chip.
Parts Required:
Qty Descriptlon Old Part No. New Part No. Circuit Description
1 ROM 27C512BJDUG 27C512BJDUJ IC-19
or
1 ROM 27C512BJDVG 27C512RJDVJ IC-19
Time required for this modification is 30 minutes or less.
Service code A:57 B:X46-3130 l/2 C:ICl9 D:91