Board IC Voltage List, RGB DRIVE, CRT Drive | Sony KV-20S90 guide

KV-20S90 / 21SE43C

C

[RGB DRIVE, CRT DRIVE]

	1		2		3		4		5
										CN1751
A			R1765
A
—			R1764
						H2	H1
				L1751		H2
							KB
						KR
						G2
B								SPARK
						KG		GAP
						KG		GROUND		E
								GROUND		E
				C1752
						G1				CN1754
						G1
—						G2		J1751
			20,27			G2
			20,27
			E
C	T P4 7B		B		CN1753			GROUND
	T P4 7B				CN1753			GROUND
	B O UT		G

			R		R1759
					R1759
			IK
—					C1755
—				T P47 R	1-673-986-11			171691511
				T P47 R	1-673-986-11			171691511
				R OU T

C BOARD WAVEFORMS

1

148.4V p-p (H)

2

118.8V p-p (H)

3

122.5V p-p (H)

C BOARD IC VOLTAGE LIST

IC1751

PIN	VOLT
1	2.1
2	2.2
3	2.1
4	GND
5	3.7
6	193.4
7	146.5
8	133.8
9	134.9

— 29 —

Image 29

Sony KV-20S90, KV-21SE43C service manual Board IC Voltage List, RGB DRIVE, CRT Drive

Contents

Trinitron Color Television Table of Contents Lbs Specifications SAFETY-RELATED Component Warning Leakage Test Safety CHECK-OUT Self Diagnosis SELF-DIAGNOSTIC Function Self Diagnostic Self-Diagnostic Screen Display Rear Cover Removal DisassemblyChassis Assembly Removal Service Position Picture Tube Removal Anode CAP Removal ProcedureHOW to Handle AN Anode CAP Beam Landing SET-UP AdjustmentsAdjustment Procedure Vertical Static Convergence Convergenge SCREEN-CORNER Convergence Dynamic Convergence AdjustmentFocus Screen G2 White Balance Adjustments Service Adjustment ModeService Adjustment Mode Memory HOLD-DOWN Readjustment Safety Related AdjustmentsB+ Voltage Confirmation and Adjustment Preparation Before Confirmation Digital Digital Power Multimeter Supply Circuit Adjustments Function Range Data Video Adjustment Items 1Data Initial Average ID MAP Adjustment Items 2Board Adjustments Frequency Adjustment Display Position Adjustment Disp SUB Contrast Adjustment RdrvSUB Bright Adjustment Sbrt SUB HUE, SUB Color Adjustment SHUE, Scol Center Adjustment Vpos Size Adjustment VsizCenter Adjustment Hpos Linearity VLIN, V. Correction Printed Wiring Board and Schematic Diagram Information DiagramsCircuit Boards Location Reference Information DY Assy Block Diagram and Schematics INT Board Schematic Diagram REF. no Location Board Variant Model List Board IC Voltage List Board IC Block DiagramsIC521 NJM4558M-TE2 PIN Volt Cvco Demod IC301 CXA2133BS Diode Board Locator ListTransistor Crystals KG KB G2 CRT RGB DRIVE, CRT Drive Semiconductors Chassis KV-20S90/21SE43C Exploded Views REF. no Electrical Parts List Ceramic Fuse Connector Chip Conductor JackCoil Photo Coupler Metal Chip Metal Relay SwitchTuner Varistor Remote Commander Accessories and Packaging 2LA TX 1C 3LA TX NIL BA ADS LCS IRD CCV +EVIRD Trinitron Color TV Page Safety Precautions Notification Power Sources Important SafeguardsFor the set with a polarized AC power cord plug Grounding or Polarization Overloading CleaningObject and Liquid Entry Attachments Ventilation AccessoriesPower-Cord Protection Lightning Outdoor Antenna GroundingAntenna Grounding According to the NEC Replacement Parts Damage Requiring ServiceSafety Check ServicingPage Contents Page Introduction Trinitron Color TV Features About this Manual Batteries for the Remote Control TV with indoor or outdoor antenna, or Catv cable Basic Connections Rear of TV Connecting Additional EquipmentTV and VCR Cable Box Rear of TV TV and Cable Box VCR TV, VCR, and Cable box Connecting Headphones Connecting a CamcorderPage Button Description Using the Remote Control and Basic Functions If you lost your remote control, see To perform Auto Setup again Setting Up the TV Automatically Menu Quick Start to the Menus Press f to Press F to Using the Video menuTo access a menu KV-20S90 only Using the Audio menu ON/OFF Timer Scheduled viewing Using the Timer menu Favorite Channel Quick access to favorite channels Using the SET UP menu Cable Channel SET UP menu Contents Defined as Using Parental ControlOverview of the Ratings Age NC-17 Rating Defined asPG-13 14+ C8+18+ Rating Activating Parental Lock Initial access into Parental Control Rating TV will allow a maximum rating Setting the RatingUsing the Custom menu Information for Parents Resetting your passwordPage Troubleshooting To be cleaned Remote controlLost password Cable stations don’t seem to work For all models except as noted SpecificationsPage Index TV Rating A. Ratings 20 Unrated Page Page Page Page Page Page Schematic Diagrams NON-SCHEMATIC PagesTo Print Full Size Schematic Diagrams To Print Tiled Version of Schematics ON-SCREEN Search Option Original Manual Issue Date 4/2001