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World of Ham Radio 1997
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WOHR97_AmSoft_(1997-02-01).iso
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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 # 829
MODEL: TR-7800
SUBJECT: Loss of Memory
Intermittent loss of memory may be corrected by adding one resistor at the
microprocessor on the control unit.
Procedure:
1. Remove bottom cover, 4 screws.
2. From the Control unit X53-1180-xx unplug the rear mounted connectors 8-11.
3. Remove 6 screws from the board.
4. Swing the unit forward.
5. Install a 470K ohm 1/8 watt or larger resistor from connector 11, "UP"
pin, to ground. (microprocessor pin 35, PA2 port). Space is limited: Be
certain not to create a solder bridge when installing the resistor.
6. Reverse steps 4-1 for reassembly.