Mitsubishi Electronics VS-60609 PIP Circuit Purpose, Color and Tint Symptom, PIP Insert Picture

Page 33

MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709

[Video Circuit]			Purpose:		To set the beam current to its’ optimum level.
11. Sub Contrast			Symptom:		Excessive or insufficient contrast.

Measuring		DC milliammeter	Note: This adjustment must follow the Black Level Adjustment.
Instrument
Test Point		+ DT #3
		- DT #1	1.	Supply a Grayscale signal to the Video Input.

Ext. Trigger		------	2.	Enter the Service Mode, VCJ Function.
			3.	Select Item “1 SCT”, before going to Step 4.
Measuring		3 MA
			4.	Connect the DC milliammeter to the DT connector.
Range
				• Positive lead to pin 3
Input Signal		Grayscale
				• Negative lead to pin 1

			5.	Adjust Item “1 SCT” to set the total CRT current value to 860 ±15ua.
Input Terminal		Video Input
			6.	Disconnect the meter.

			7.	Save data and exit the Service Mode.

SERVICE MODE

Activate …….. MENU-0-1-5-7

Function …...………..AUDIO

Item No. ……….…….VIDEO

Adjust Data ….…….ADJUST

Save Data …. ………ENTER

Exit …………..MENU (twice)

	[PIP Circuit]		Purpose:		To match the main and sub pictures color.
	12. Color and Tint		Symptom:		Different color between the main and sub pictures.
	(PIP Insert Picture)

	Measuring	-----	1.	Supply a Color Bar signal to the Video or RF Input.
	Instrument

	Test Point	-----	2.	Select the Color Bars as the source for the main picture (Input button).
			3.	Activate the single insert PIP mode .

	Ext. Trigger	------	4.	Select the Color Bars as the PIP source.
			5.	Exit the PIP mode (PIP button)

	Measuring	-----	6.	Enter the Service Mode, PIP Function.
	Range		7.	Select Item “3 SCL1” (the single insert is displayed)
	Input Signal	Color Bars
			8.	Use Items “2 CSAT” and “1 HUE” to match the color of the sub picture to that

				of the main picture.
	Input Terminal	Video or RF Input
			9.	Save data and exit the Service Mode.

SERVICE MODE

Activate …….. MENU-0-1-5-7

Function …...………..AUDIO

Item No. ……….…….VIDEO

Adjust Data ….…….ADJUST

Save Data …. ………ENTER

Exit …………..MENU (twice)

Page 33

Image 33

Contents VZ9 ModelsMitsubishi Digital Electronics AMERICA, INC Page Contents Service Parts List Circuitry Block Diagrams Chip Parts Replacement Replacement PartsIntroduction Product Safety NoticeSafety Precautions Radiation warningLeakage current check Cabinet Disassembly Front View Front Cabinet DisassemblyRefer to Parts List for Part Numbers Rear Cabinet Disassembly Cabinet Disassembly Rear ViewPage Table a Size Length1c. VS-70709 Cabinet Separation Precedure Cabinet Separation Procedure VS-70709DiamondShield Installation Procedure DiamondShield Removal ProcedureServicing the Diamondshield Top & Bottom Molding Clips Side Molding ClipsMajor Parts Locations Chassis Removal and PCB LocationsRemoval of the CRT CRT ReplacementPage Adjustment procedures after replacing the CRTs Test Signal Electrical AdjustmentsMonoscope Signal Color Bar SignalOption Menu Setup Initial SettingsDefault Settings Description Initial SettingError Code Operational Check LED Indicator DiagnosticsError Codes AV MemoryActivating the Circuit Adjustment Mode Adjustment FunctionsSelection of adjustment Functions Adjustment Items Changing DataConvergence Adjustment Mode Sub Functions Fine Conv PressCursor Cursor CoordinatesDisplay Saving Data and Exiting the Convergence ModeAdjustment Items List Audio FunctionPIP Function HR Function Convergence Mode ItemsConv Misc Conv GreenConv Blue Conv REDDF Function VkeyPage Audio Circuit Purpose Service ModeInput Level Audio Function Abbrev DataDynamic Focus Symptom High Voltage Control SymptomConvergence Mode High Voltage Circuit Purpose Focus Verification Lens Focus Symptom Blurred picture MENU-0-1-5-9 Color PressAbbr Data Service Mode CRT Cutoff SymptomCRT Circuit Purpose CRT CurrentService Mode Activate …….. MENU-0-1-5-7 Low Color TemperatureColor and Tint Symptom PIP Circuit PurposePIP Insert Picture 13. Cb, Cr Offset Symptom Cb, Cr Circuit PurposeOn-screen display is not positioned correctly Abbr Data Height and Vert. Linearity Symptom Deflection Circuit PurposeConvergence Circuit Purpose Convergence Circuit Purpose Coarse Convergence Color edging at the top, bottom and sides of the picture Fine Convergence SymptomReplacement Chip Parts Removal Resistors, Capacitors, etcChip Parts Removal Transistors Parts Ordering Critical and Warranty Parts DesignationParts Tolerance Codes Model AbbreviationsQuick Reference for Common Replacement Parts Remote ControlCRT Assemblies High Voltage / Deflection ComponentsIntegrated Circuits TubesTransistors DiodesCOIL-CHOKE ZTS6620 CoilsTransformers Variable ResistorsResistors Carbon 1/4W 10K-J R521R529 Fuse 1/2W 0.82-JCapacitors & Trimmers Composition 1/2W 4.7M-KComposition 1/2W 1M-K CER-CHIP SL50V 470P-J CER-CHIP CH50V 82P-JCER-CHIP CH50V 47P-J CER-CHIP CH50V 68P-JC554 C552PLA-PP 200V 0.47M-J C568Poly 250VAC 0.1M-M C902 C901Poly 250VAC 0.1M-M C903 CER 250VAC 1000P-M C904Accessories MiscellaneousPrinted Circuit Boards Screen Parts Screen Assembly Circuitry Block Diagrams Power SupplyVIDEO/COLOR Signal Path Sound Circuit Deflection Protect Circuit Convergence Circuitry Control Circuit Page Page Page Page Page Page Page Page Page Page Page