Magnavox MWC24T5 Head Switching Position Adjustment, Purity Adjustment, Green RED Blue

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13.Head Switching Position Adjustment

Purpose: Determine the Head Switching Position during Playback.

Symptom of Misadjustment: May cause Head Switching Noise or Vertical Jitter in the picture.

Note: Unit reads Head Switching Position automatically and displays it on the screen (Upper Left Corner).

1.Playback test tape (VFMS0001H6).

2.Enter the Service mode. (See page 1-7-1.) Then press the number [5] button on the remote control unit.

3.The Head Switching position will display on the

screen; if adjustment is necessary follow step 4. 6.5H(412.7∝s) is preferable.

4.Press [CH. o] or [CH. p] button on the remote control unit if necessary. The value will be changed in 0.5H steps up or down. Adjustable range is up to 9.5H. If the value is beyond adjustable range, the display will change as: Lower out of range: 0.0H

Upper out of range: -.-H

The following 2 adjustments normally are not attempted in the field. They should be done only when replacing the CRT then adjust as a preparation.

14. Purity Adjustment

Purpose: To obtain pure color.

Symptom of Misadjustment: If Color Purity Adjustment is incorrect, large areas of color may not be properly displayed.

	Test Point	Adj. Point	Mode	Input


	---	Deflection Yoke	---	*Red Color
	---	Purity Magnet	---	*Red Color
		Purity Magnet

	Tape	M. EQ.		Spec.


	---	Pattern Generator	See below

		Figure

GREEN

RED

BLUE

Fig. 5

*This becomes RED COLOR if the [7] button is pressed while in service mode.

1.Set the unit facing east.

2.Operate the unit for over 30 minutes before adjusting.

3.Fully degauss the unit using an external degaussing coil.

4.Set the unit to the AUX mode which is located before CH2 then input a red raster from video in.

5.Loosen the screw on the Deflection Yoke Clamper and pull the Deflection Yoke back away from the screen. (See Fig. 6.)

6.Loosen the Ring Lock and adjust the Purity Magnets so that a red field is obtained at the center of the screen. Tighten Ring Lock. (See Fig. 5, 6.)

7.Slowly push the Deflection Yoke toward the bell of the CRT and set it where a uniform red field is obtained.

8.Tighten the clamp screw on the Deflection Yoke.

1-7-6

T2202EA

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Contents Suffix B Illustration at rightMain Section Rating LabelImportant Safety Notice Main Section Description Condition Unit Nominal Limit SpecificationsDVD PTD 1-NOR TIT.1 CHP.1Amsp Pmsp VCRHi-Fi Audio This DVD player uses a pickup that emits a laser beam Laser Beam Safety PrecautionsLocation Top of DVD mechanism E7NLSPReading should Important Safety PrecautionsSafety Precautions for TV Circuit Test ALL ExposedTvdvdnisp Precautions during Servicing Clearance Distance Safety Check after ServicingMeasuring Method Power on Leakage Current TestStandard Notes for Servicing Instructions for ConnectorsHow to Remove / Install Flat Pack-IC Circuit Board IndicationsWith Soldering Iron MachineMasking Flat Pack-IC Tape Tweezers Pin 1 of the Flat Pack-IC Is indicated by a mark InstallationWith Iron Wire PresolderGround for Workbench Instructions for Handling Semi- conductorsGround for Human Body IncorrectPreparation for Servicing How to Enter the Service ModeHow to Enter the Service Mode PreparingDisassembly Method Cabinet Disassembly InstructionsDisassembly Flowchart RemovalReference Notes in the Table Fig. D1Tray Chassis Unit DVD Mechanism Anode CapCRT CBA DVD Main CBA Unit DC 120V +B Adjustment Electrical Adjustment InstructionsHow to make service remote control unit Test Equipment RequiredR2583 CH. o / p buttons Video F0 AdjustmentGeneral Pincushion Adjustment Cut-off AdjustmentSize Adjustment Smpte White Balance AdjustmentSub-Brightness Adjustment 11. V. Shift Adjustment Focus Adjustment10. H. Position Adjustment 12. V. Size AdjustmentGreen RED Blue Head Switching Position AdjustmentPurity Adjustment Convergence Adjustment Magnet RB Magnet RB-GTV/VCR Section HOW to Initialize the TV/DVD/VCRDVD Section Appearance State Firmware Renewal ModeAppearance shown in *1 of Fig. b is described as follows 10-1 T2202BLS Main CBAT2202BLV Video Block Diagram10-2 T2202BLA Audio Block Diagram10-3 T2202BLH Diagram10-4 TV Process Block Diagram 10-5 T2202BLTT2202BLCRT CRT/H.V. Block Diagram10-6 Power Supply Block Diagram IC160110-8 T2202BLSDDigital Signal Process Block Diagram 10-9 T2202BLDX7TNSC Schematic Diagrams / CBA’S and Test PointsStandard Notes Area D3 How to read converged linesTest Point Information Area B1Main 1/6 & Sensor Schematic Diagram TV/VCR Section T2202SCM1Main 2/6 Schematic Diagram TV/VCR Section T2202SCM2Main 3/6 Schematic Diagram TV/VCR Section T2202SCM3Main 4/6 Schematic Diagram TV/VCR Section T2202SCM4Main 5/6 & Junction-A Schematic Diagram TV/VCR Section T2202SCM5Main 6/6 Schematic Diagram TV/VCR Section T2202SCM6Sub 1/2 Schematic Diagram TV/VCR Section T2202SCSUB1T2202SCSUB2 Sub 2/2 Schematic Diagram TV/VCR Section11-10 T2202SCCRT CRT Schematic Diagram TV/VCR SectionFunction & Junction-B Schematic Diagram TV/VCR Section T2202SCF 11-11DVD Main 1/3 Schematic Diagram DVD Section 11-12 T2202SCD1DVD Main 2/3 Schematic Diagram DVD Section 11-13 T2202SCD2DVD Main 3/3 Schematic Diagram DVD Section 11-14 T2202SCD3BHF300F01011B Main CBA Top View TV/VCR SectionBHF300F01011A 11-15 BT1200F01013Main CBA Bottom View TV/VCR Section 11-16 BT1200F01013Sub CBA Top View TV/VCR Section 11-17 BT1200F01023-ASub CBA Bottom View TV/VCR Section 11-18 BT1200F01023-A11-19 BT1200F01023-B BT1200F01023-D BT1200F01023-E BT1200F01023-C 11-20X7TWF Waveforms12-1 13-1 T2202WITWiring 13-2 T2202WIDSymbol System Control Timing ChartsMode SW LD-SW Symbol Loading StatusChart 14-214-3 14-4 STILL/SLOW- Play14-5 Tray Close ~ Play / Play ~ Tray Open IC PIN Function Descriptions ≥ 4.5 V, L ≤ 1.0 Pin Signal FunctionPin Signal Function IC1201 TV/VCR Micro Controller ICOUT YCA-CS PB-HOUT YCA-SDA OUT YCA-SCLLead Identifications 16-1 T2202LEDVD Mechanical Parts Exploded ViewsCabinet 17-1 T2202CEXPacking 17-2 T2203PEXCRT Warning Label Location Mechanical Parts ListV501 and L551 Combination CRT Type No. CRT Warning LabelElectrical Parts List 20060325 19-1 T2202EL20060325 19-2 T2202EL CCD3DKA0B82120060325 19-3 T2202EL ICS20060325 19-4 T2202EL Switches 20060325 19-5 T2202EL20060325 19-6 T2202EL WT1 Lead Clamper20060325 19-7 T2202EL CRT CBA 20060325 19-8 T2202ELMWC24T5 T2202UC