Daewoo K3050MECHA service manual Position Adjustment

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E. X-POSITION ADJUSTMENT

	TEST POINTS	S/W PULSE TEST PIN	PATH ADJ. FIXTURE

		ENVELOPE TEST PIN	PATH ADJ. FIXTURE
		ENVELOPE TEST PIN	PATH ADJ. FIXTURE

	MEASURING EQUIPMENT	OSCILLOSCOPE

	ADJUSTMENT	VR CONTROL	PATH ADJ. FIXTURE

		ADJUST BOSS	MAIN BASE.
		ADJUST BOSS	MAIN BASE.

a. Connect the path adjustment fixture to PT01 of the MAIN CIRCUIT BOARD. b. Play back the ALIGNMENT TAPE (COLOR BAR ALIGNMENT).

c. Connect channel-1 scope probe to S/W PULSE TEST PIN of PATH ADJ, FIXTURE. d. Connect channel-2 scope probe to ENVELOPE TEST PIN of PATH ADJ, FIXTURE.

e. Turn the VR CONTROL to the center point. (If the VR CONTROL is completly turned counter-clockwise, it is positioned on another tracking center.)

f. With the VR CONTROL in the center state, turn the ADJUST BOSS by using FLAT TYPE SCREW DRIVER and adjust the X-POSITION to obtain the maximum envelope waveform.

Fig. 5-5 X-POSITION 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 Periodic Maintenance and Service Schedule PeriodicmaintenanceandservicescheduleCleaning 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 TOTALASSYREMOVALSee -11 A/CHEADASSYREMOVALSeeFig.3-10L/CBRACKETASSYREMOVALSeeFig.3-11 PinchleverS/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