Daewoo DV-K580NZ-T service manual Audio Circuit Adjustment Method, Audio Record Bias

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ELECTRICAL ADJUSTMENT

3. AUDIO CIRCUIT ADJUSTMENT METHOD

(1) AUDIO RECORD BIAS

Adjustment Parts

Checking Point

Measuring Equipment

Condition of Adj.

Test Tape

R292

-

Audio Level Meter

REC mode

Blank Tape

 

 

 

 

 

vCONNECTION METHOD

R292

 

REC BIAS

 

(+)

(-)

Audio

Level Meter

vADJUSTMENT PROCEDURE

1)Supply the signal in the OPEN mode.

2)Connect the Audio Level Meter to R01 at the Deck AC Head.

3)After inserting a blank tape, record in SP mode.

4)Adjust R292 to obtain 3 m Vrms .

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Contents Time Lapse VCR Table of Contents SAFETY&PRECAUTIONS Safety Check After ServingSAFETY&PRECAUTIONS External Views Front Views FunctionAC Power Cord Rear Views FunctionElectrical Adjustment Adjustment ProcedureVideo Circuit Adjustment Method EE LevelPlayback Y-SIGNAL Output Level Sync TIP Frequency FM Deviation Record Current REC-Y Audio Circuit Adjustment Method Audio Record BiasSpecifications NtscTimelapse REC/PB Speed Chart Tape Mode Tape Speed RemarkVideo Part REC ModeCircuit Operation X302 IH DLY Audio Part Block Diagram Servo Syscon PartTime Lapse Recording Method R L R L R L R LTerminal Part Alarm InputAlarm Output Panic InputSeries Output Tape END OUTSW Output Series Input Checking the Primary Circuit Trouble Shooting Flow ChartPower Circuit Troubleshooting Flow Chart Checking the Secondary CircuitSERVO-SYSCON Circuit Noise appears on Screen on the whole Auto-stop during Playback Power CIRCUIT? YES Capstan M/T loading stops REC Mode Cassette is not inserted Power compensation Does not operate EE Mode N.G Video CircuitREC Signal N.G PB-Y Signal N.G PB-C Signal N.G Troubleshooting of PB Mode Audio CircuitTroubleshooting of REC Mode Troubleshooting of EE Mode COM Port Description COM Port Description OUT OSD Data Voltage Chart IC Motor Drive BA6209 IC504IC Relay A9W-K RL901 IC Relay A9W-K RL902IC Video LA7391A IC301 IC Video SW LA7152 IC303 IC Video AMP NJM2267 IC002 TransisterVoltage Chart Circuit Diagram Connection DiagramPower Circuit Diagram Syscon Circuit Diagram Video Circuit Diagram Headamp Circuit Diagram OSD Circuit Diagram C Separation Circuit Diagram Audio Circuit Diagram Logic Circuit Diagram Terminal Circuit Diagram Components Location Guide on PCB Bottom View PCB MainPCB Union Disassembly Panel Front ASS’YSET Total ASS’Y Packing ASS’Y Electrical Parts List DEL DV-K580NZ-TElectrical Parts List SPG T SUB Brake Coil OSC DEO-010BIAS Diode Bridge R205 R413 Mylar Clip Fuse Semi Fixed Diode Zener UZ-5.6BSC PCB Logic AS DV-K580NZ-T SW Tact Diode EG01C Mail G7F00E@web.dwe.co.kr TEL FAX