Daewoo DV-K580NZ-T service manual Video Circuit Adjustment Method, EE Level

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ELECTRICAL ADJUSTMENT

2.VIDEO CIRCUIT ADJUSTMENT METHOD

(1) EE LEVEL

Adjustment Parts

Checking Point

Measuring Equipment

Test Tape

Input Signal

 

 

 

 

 

R395

TJ396

Signal Gen. Oscilloscope

-

Color Bar

 

 

 

 

 

vCONNECTION METHOD

TJ302

EE

 

 

R395

TJ396

CH-1

 

 

Oscilloscope

 

CH-2

 

SIGNAL

 

GENERATOR

vADJUSTMENT PROCEDURE

1)Supply the Color Bar Signal to the VIDEO IN JACK, and set the VCR to the STOP mode.

2)Connect the oscilloscope to TJ396 and trigger the scope with a composite sync signal at TJ302.

3)Adjust R395 to obtain 2.0Vp-p ± 0.2Vp-p between the SYNC Tip and 100% white level

TJ395

2.0V 0.2Vp-p

Horizontal :10 s/div Vertical :0.1V/div

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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 LAlarm Input Alarm OutputTerminal Part 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