Mitsubishi Electronics VS-60609 service manual Cb, Cr Circuit Purpose, 13. Cb, Cr Offset Symptom

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

[Cb, Cr Circuit]				Purpose:		To match the match grays between color and monochrome
13. Cb, Cr Offset				Symptom:		pictures.
13. Cb, Cr Offset				Symptom:		Grays have a color tint.

Measuring		-----		1.	Supply an NTSC White Raster with 25% luminance.
Instrument		-----
Instrument
Test Point		-----		2.	Activate the Service Mode, VCJ Function.
Test Point		-----		3.	Set the data for item “30 COLH” to 63.
				3.	Set the data for item “30 COLH” to 63.
Ext. Trigger		------		4.	Adjust items “23 CBOF” and “24 CROF” for optimum gray.
				5.	Set the data for item “30 COLH” back to 31.
Measuring		-----		5.	Set the data for item “30 COLH” back to 31.
Measuring				6.	Save the data and exit the Service Mode.
Range				6.	Save the data and exit the Service Mode.
Range
Input Signal		White Raster @ 25%

Input Terminal		NTSC Input


	SERVICE MODE
	Activate …….. MENU-0-1-5-7
	Function …...………..AUDIO
	Item No. ……….…….VIDEO
	Adjust Data ….…….ADJUST
	Save Data …. ………ENTER
	Exit …………..MENU (twice)

[On Screen Display Circuit]	Purpose:	To position the on-screen display.
14. Character Position	Symptom:	On-screen display is not positioned correctly.

	Measuring	-----
	Instrument
	Test Point	-----
	Ext. Trigger	------
	Measuring	-----
	Range	-----
	Range
	Input Signal	Monoscope

1.Supply a Monoscope signal to the Video or RF Input.

2.Select the Monoscope as the source for the main picture (Input button).

3.Activate the Service Mode, HR Function.

4.Use the Adjust Right/Left buttons to center the display horizontally. (A = B)

5.Save data and exit the Service Mode.

Input Terminal RF or Video

SERVICE MODE Activate …….. MENU-0-1-5-7

Function …...………..AUDIO

Item No. ……….…….VIDEO

Adjust Data ….…….ADJUST

Save Data …. ………ENTER

Exit …………..MENU (twice)

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Contents Models VZ9Mitsubishi Digital Electronics AMERICA, INC Page Contents Chip Parts Replacement Replacement Parts Service Parts List Circuitry Block DiagramsProduct Safety Notice IntroductionRadiation warning Safety PrecautionsLeakage current check Front Cabinet Disassembly Cabinet Disassembly Front ViewRefer to Parts List for Part Numbers Cabinet Disassembly Rear View Rear Cabinet DisassemblyPage Size Length Table aCabinet Separation Procedure VS-70709 1c. VS-70709 Cabinet Separation PrecedureServicing the Diamondshield DiamondShield Removal ProcedureDiamondShield Installation Procedure Top & Bottom Molding Clips Side Molding ClipsChassis Removal and PCB Locations Major Parts LocationsCRT Replacement Removal of the CRTPage Adjustment procedures after replacing the CRTs Monoscope Signal Electrical AdjustmentsTest Signal Color Bar SignalDefault Settings Initial SettingsOption Menu Setup Description Initial SettingError Codes LED Indicator DiagnosticsError Code Operational Check AV MemorySelection of adjustment Functions Adjustment Items Adjustment FunctionsActivating the Circuit Adjustment Mode Changing DataConvergence Adjustment Mode Cursor Fine Conv PressSub Functions Cursor CoordinatesSaving Data and Exiting the Convergence Mode DisplayAudio Function Adjustment Items ListPIP Function Conv Misc Convergence Mode ItemsHR Function Conv GreenDF Function Conv REDConv Blue VkeyPage Input Level Service ModeAudio Circuit Purpose Audio Function Abbrev DataConvergence Mode High Voltage Control SymptomDynamic Focus Symptom High Voltage Circuit PurposeMENU-0-1-5-9 Lens Focus Symptom Blurred pictureFocus Verification Color PressCRT Circuit Purpose CRT Cutoff SymptomAbbr Data Service Mode CRT CurrentLow Color Temperature Service Mode Activate …….. MENU-0-1-5-7PIP Circuit Purpose Color and Tint SymptomPIP Insert Picture Cb, Cr Circuit Purpose 13. Cb, Cr Offset SymptomOn-screen display is not positioned correctly Abbr Data Deflection Circuit Purpose Height and Vert. Linearity SymptomConvergence Circuit Purpose Convergence Circuit Purpose Coarse Convergence Fine Convergence Symptom Color edging at the top, bottom and sides of the pictureChip Parts Removal Resistors, Capacitors, etc ReplacementChip Parts Removal Transistors Parts Tolerance Codes Critical and Warranty Parts DesignationParts Ordering Model AbbreviationsCRT Assemblies Remote ControlQuick Reference for Common Replacement Parts High Voltage / Deflection ComponentsTransistors TubesIntegrated Circuits DiodesCoils COIL-CHOKE ZTS6620Variable Resistors TransformersResistors R529 R521Carbon 1/4W 10K-J Fuse 1/2W 0.82-JComposition 1/2W 4.7M-K Capacitors & TrimmersComposition 1/2W 1M-K CER-CHIP CH50V 47P-J CER-CHIP CH50V 82P-JCER-CHIP SL50V 470P-J CER-CHIP CH50V 68P-JPLA-PP 200V 0.47M-J C552C554 C568Poly 250VAC 0.1M-M C903 C901Poly 250VAC 0.1M-M C902 CER 250VAC 1000P-M C904Miscellaneous AccessoriesPrinted Circuit Boards Screen Parts Screen Assembly Power Supply Circuitry Block DiagramsVIDEO/COLOR Signal Path Sound Circuit Deflection Protect Circuit Convergence Circuitry Control Circuit Page Page Page Page Page Page Page Page Page Page Page