Labels:book | bulletin board | daily | reckoner OCR: KENWOOD SB-989 SERVICE BULLETIN Amateur Radio Division SUBJECT DATE DRU-2 Erratic Playback/ /Memory Loss Janurary 20 1992 Erratic operation ot the DRU-2 such ae loss of peeeedd data or erratic messagc playback might be caused by prema ture backup battery failure This premature failure 1 due to an current drain thar is placed on the DRU-2 battery (over 100 uA when connected to the TS-850S No backup current is drawn whea the DRU-2 he not installed shclt life of new units shauld not be affected The following procedure will this symptom requlred Modification parts kit W05-0379-00 Consists ofthe following items) Insulator (top) Lithium bartery W09-0326-05 DTC. -124ES transistor DTC. 124ES Insulator (bottom) F20-0521 1-04 2.2 uF 25v tantalum tap CS15E1E2RM Insulating tubing Procedore: Add DTC -1 ...
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