Daewoo DC-S83D1D Service Manual
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9TROUBLESHOOTING8TROUBLESHOOTINGNo broadcasting signalreceivedIs the output at IC501 pin# 61(CLK),60 (DATA) normal?Is SIF,Video output at TMI(RF101)pin#16,19 normal?Check IC 501.Check IC301.Check IC501.YESYESNONONOIs Video Signal input at IC501pin#50?Is there Video output at IC501pin#52?Check TMI (RF101) Block.NOCheck Video Buffer Q670, Q671C. No broadcasting signal receivedYESYESYESCassette tape isn’t inserted.Is 5V voltage obtained at Loadingparts IC501 pin#2?Is 14V voltage obtained atCapstan Motor P501 pin#2?Check at EVER 14VCheck Q850.Connect Capstan and Loading Motor.Check connector and Capstan Motor.YESNONONOIs 13V voltage obtained at Eachparts of Loading Motor?Replace Loading Motor.Check D851 and POWER circuit.D. No CASSETTE LoadingYESYESE. AUTO STOP in Playback modeVCR stops automatically inplayback mode.Check R544,C516 and P501pin#11.Check S501, S502 REEL Sensor.Is D.PG/FG pulse at IC501pin#90 normal ?Is C. FG pulse at IC501 pin#87normal ?Is there REEL Pulse at IC501pin#79, 80?Check and replace IC501.NOYESYESYESNOCheck C.FG(R543,C517) andP501 pin#1.NO |
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