Labels:reckoner | sky OCR: KENWOOD ASB-1034 Service Bulletin Amateur Radio Division Subject: TS -850S No audio from VS-2 Date: December 1993 Symptom: Several users have reported problem with the Voice Synthesizer Unit VS-2 not voicing the frequency reliably when the Voice button is depressed This symptom caused by drop the 50 voltage from vdc to approximately 45 vdc when the VS-2 connected The following change will correct this symptom. Parts Required: Qty Description PIO Part No. New Part No Circult Description TH Chip coit 140-2211-48 L40-4701-48 50 Procedure: Change L501 from 220 uH to 47 UH on the RF Unit (X44-3120-00 C/4) Caution: This modification requires surface mount soldering equipment that is rated for CMOS circuits IT also requires famillarity withsuriace mount soldering techniques f you do not have the ...
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