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World of Ham Radio 1997
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WOHR97_AmSoft_(1997-02-01).iso
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asb0830.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 # 830
MODEL: TR-2400
SUBJECT: TX NOISE
Some units may exhibit excessive background noise (up to
several hundred Hertz deviation). This may be reduced or
eliminated by installing an additional shield between the
Display and PLL units
This changes applies only to units between serial numbers
011xxxx and 101xxxx. Radios before this group (with a momentary
REV switch) will not show improvement by addition of this
shield. Refer to Service Bulletin 815 for this early group.
Units appearing with serial numbers after 101xxxx will have
this shield factory installed.
Parts supplied
N09-0627-05 Pan head screw 3 pcs.
F10-1627-04 Shield w/lead 1 pc.
Procedure:
1. Remove 4 rear case screws, and 2 screws from inside the
battery compartment.
2. Seperate front case from body. DON'T tear leads.
3. Remove 2 small and three large screws from the bottom edge
of the Display unit. Save the two small screws.
4. Install the three pan head screws in place of the round
head screws.
5. Install the shield foam towards the Display. Lift the
protective plastic only enough to secure the shield with
the two small screws. Cover the screw heads with the plastic
film.
6. Secure the shield ground under the small Phillips screw
located between the BUSY/OPEN and S TONE switches.
7. When reassembling, the wiring harness must be positioned to
the right of crystal X2 (46.1666MHz) or the case will nne
close correctly, and wires will be pinched.
8. Close the case and reinstall 6 screws.