Daewoo K3050MECHA service manual Linearity Adjustment

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G. LINEARITY ADJUSTMENT

TEST POINTS

S/W PULSE TEST PIN

PATH ADJ. FIXTURE

 

 

ENVELOPE TEST PIN

PATH ADJ. FIXTURE

 

 

 

 

MEASURING EQUIPMENT

OSCILLOSCOPE

 

 

 

 

ADJUSTMENT

VR CONTROL

PATH ADJ. FIXTURE

 

 

S/T GUIDE ROLLER

TAPE TRANSPORTING SYSTEM

 

 

 

 

a. Connect the PATH ADJ. FIXTURE to PT01 of the MAIN CIRCUIT BOARD. b. Play back the ALIGNMENT TAPE (COLOR BAR SIGNAL).

c. Connect the channel-1 scope probe to the S/W PULSE TEST PIN of the PATH ADJ. FIXTURE. d. Connect the channel-2 scope probe to the ENVELOPE TEST PIN of the PATH ADJ. FIXTURE. e. Adjust the VR CONTROL of the PATH ADJ. FIXTURE for maximum envelope signal output of the

alignment tape.

f. Adjust the S/T GUIDE ROLLER until the envelope signal waveforms of the entrance and exit sides are as shown in Fig. 5-7.

Fig. 5-7 LINEARITY ADJUSTMENT

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Contents VCR Mechanism Unit Contents Descriptionofthemechanism 1CHARACTERISTICOFTHEK30-DECKMECHANISMWire Diagram 2WIREDIAGRAMConnector PIN Arrangement Assembling Diagram of Deck Assy TOP View AssemblingdiagramBottom View Parts Location of Front Loading Assy A. TOP View Front View Periodicmaintenanceandserviceschedule Periodic Maintenance and Service ScheduleCleaning and Lubrication Name Periodic Service Time Service Schedule for the Major PartsList of Jigs and Tools Items Model Remarks JigsandtoolsSketch of Jigs and Tools Front Loading Assy Removal See Fig Disassembly and ReplacementDisassemblyofthefrontloadingassy SeeFig.3-2~3-6 Remove one screw holding the Prism Link L. Fig DRUMASSY/EARTHBRACKETASSYREMOVALSeeFig.3-7 Insert Points TOP PlateREELBELT,LOADINGRACKASSY,LOADINGASSY,S/TSLANTPOLEASSY L/CBRACKETASSYREMOVALSeeFig.3-11 A/CHEADASSYREMOVALSeeFig.3-10Pinchlever TOTALASSYREMOVALSee -11S/TMAIN&SUBBRAKEASSYREMOVALSeeFig.3-14 CAMGEAR,RELAYLEVERANDF/LRACKREMOVALSeeFig.3-11TENSIONBANDASSYREMOVALSeeFig.3-15,3-16 IDLERPLATETOTALASSY&S/TREELTABLEREMOVALSeeFig.3-19 CAPSTANMOTORREMOVALSeeFig.3-18REELGEARTOTALASSY&CONNECTPLATEREMOVALFig.3-21 FEHEADREMOVALSeeFig.3-20MECHANICALADJUSTMENTSeeFig.4-1~4-5 MechanicaladjustmentTriangle Marks Must Meet Each Other Page Datum Hole Tape BACKTENSIONMEASUREMENTSeeFig.4-6~4-7Mechanicalmodeoperatingthevcrwithoutacassettetape Tensionpole PositionadjustmentAdjustmentoftapetransportingsystem Adjustment of the S/T Guide Roller Adjustment of the A/C Head Assy Tilt Adjustment Position Adjustment Playback Phase Adjustment See Fig Linearity Adjustment Drum Entrance /EXIT See -8,5-9 Review ¤APLAY See Fig Audio Output A/C Head Tilt & Height Adjustment Position See Fig Exploded View of Deck Assy TOP View Exploded View and Parts ListExplodedviewofdeckassybottomview EXPLODEDVIEWOFF/LASSY D0040 LOC Stock no Part Name Description Ntsc Parts List of Deck Total AssyLOC Stock no Part Name Description Secam Parts List of Drum Price ASS’Y LOC Stock no Part Name Description Drum AS Parts List of Drum Total ASS’YLOC Stock no Part Name Description Mail G7F00E@web.dwe.co.kr TEL FAX
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