Daewoo K3050MECHA service manual Audio Output A/C Head Tilt & Height Adjustment

Page 36

J. AUDIO OUTPUT (A/C HEAD TILT & HEIGHT ADJUSTMENT)

TEST POINTS

AUDIO OUTPUT

AUDIO OUTPUT JACK

MEASURING EQUIPMENT

OSCILLOSCOPE

a. Connect the OSCILLOSCOPE to the AUDIO OUTPUT JACK.

b. Play back the ALIGNMENT TAPE (NTSC: DN1 (SP, 1KHz), PAL: DP1 (SP, 1KHz)). c. Check the AUDIO OUTPUT SIGNAL is -9~-3dBm.

d. If the requirement "c" is not satisfied, adjust the A/C HEAD TILT SCREW and A/C HEAD HEIGHT NUT to obtain the maximum audio output. (Fig. 5-3)

K. A/C HEAD AZIMUTH ADJUSTMENT

a. Connect the OSCILLOSCOPE to the AUDIO OUTPUT JACK.

b. Play back the ALIGNMENT TAPE (NTSC: DN2 (SP, 7KHz), PAL: DP2 (SP, 6KHz)).

c. Adjust the A/C HEAD AZIMUTH SCREW to obtain the audio output -9~-3dBm. (Fig. 5-3) d. Repeat the process "H. DRUM ENTRANCE/EXIT".

TEST POINTS

AUDIO OUTPUT

AUDIO OUTPUT JACK

MEASURING EQUIPMENT

OSCILLOSCOPE

35

Image 36

Contents VCR Mechanism Unit Contents 1CHARACTERISTICOFTHEK30-DECKMECHANISM Descriptionofthemechanism2WIREDIAGRAM Wire DiagramConnector PIN Arrangement Assemblingdiagram Assembling Diagram of Deck Assy TOP ViewBottom View Parts Location of Front Loading Assy A. TOP View Front View Periodicmaintenanceandserviceschedule Periodic Maintenance and Service ScheduleCleaning and Lubrication Service Schedule for the Major Parts Name Periodic Service TimeJigsandtools List of Jigs and Tools Items Model RemarksSketch of Jigs and Tools Disassembly and Replacement Front Loading Assy Removal See FigDisassemblyofthefrontloadingassy SeeFig.3-2~3-6 Remove one screw holding the Prism Link L. Fig Insert Points TOP Plate DRUMASSY/EARTHBRACKETASSYREMOVALSeeFig.3-7REELBELT,LOADINGRACKASSY,LOADINGASSY,S/TSLANTPOLEASSY A/CHEADASSYREMOVALSeeFig.3-10 L/CBRACKETASSYREMOVALSeeFig.3-11Pinchlever TOTALASSYREMOVALSee -11CAMGEAR,RELAYLEVERANDF/LRACKREMOVALSeeFig.3-11 S/TMAIN&SUBBRAKEASSYREMOVALSeeFig.3-14TENSIONBANDASSYREMOVALSeeFig.3-15,3-16 CAPSTANMOTORREMOVALSeeFig.3-18 IDLERPLATETOTALASSY&S/TREELTABLEREMOVALSeeFig.3-19FEHEADREMOVALSeeFig.3-20 REELGEARTOTALASSY&CONNECTPLATEREMOVALFig.3-21Mechanicaladjustment MECHANICALADJUSTMENTSeeFig.4-1~4-5Triangle Marks Must Meet Each Other Page BACKTENSIONMEASUREMENTSeeFig.4-6~4-7 Datum Hole TapeTensionpole Positionadjustment MechanicalmodeoperatingthevcrwithoutacassettetapeAdjustmentoftapetransportingsystem 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 and Parts List Exploded View of Deck Assy TOP ViewExplodedviewofdeckassybottomview EXPLODEDVIEWOFF/LASSY D0040 Parts List of Deck Total Assy LOC Stock no Part Name Description NtscLOC Stock no Part Name Description Secam Parts List of Drum Price ASS’Y Parts List of Drum Total ASS’Y LOC Stock no Part Name Description Drum ASLOC Stock no Part Name Description Mail G7F00E@web.dwe.co.kr TEL FAX