JVC AV-20N3/D, AV-20NMG3/-A Adjustment Locations, Solder Side, Top, Upperfocus, Lowerscreen

Page 19

AV-20N3

AV-20NMG3

AV-20NMG3B

ADJUSTMENT LOCATIONS

CRT SOCKET PWB	(SOLDER SIDE)
TOP	U
	U
TP-47R/G
TP-47G/R	TP-47B
	TP-E
	E1
T

CRT EARTH WIRE (BRAIDED ASS'Y)

MAIN PWB

F9 01

DEG

FRONT

IC701 IC702

M EM ORY IC

TU001

IC301	S1	HV
T
		U
		HVT

	1Pin TP-91(B1)	UPPER:FOCUS
	2Pin NC
		LOWER:SCREEN

3Pin X-ray1

4Pin X-ray2

5Pin TP-E( )

No. 52025

Image 19

Contents Contents AV-20NMG3 SpecificationsEnts AV-20N3Safety Precautions VIDEO/CHROMA Decorder SCL 1/SDA1 FeaturesMemory SCL 2/SDA2 Micro ComputerFront Panel Rear Terminal FunctionsRemote Control Unit Part Name Main Difference ListModel Name Disassembly Procedure Specific Service InstructionsSpeaker System CONSTANT-Ⅱ KEY Assignment of Remote Control UnitService Menu System CONSTANT-ⅠSetting item Setting value Setting of System Constant SETSetting item Setting contents User Setting ValuesInitial Setting Value of Service Menu Sound System Do Not Adjust Setting item PresetPAL Secam Procedures Replacement of IC301 if V/C DecoderLocations of Front Panel Buttons and LAM PS Measuring Instrument and Fixtures Service AdjustmentsBefore Starting Service Adjustment Adjustment ItemsKEY Assignment of Remote Control Unit Service Menu Basic Operation of Service MenuShould be OFF Method of settingC, 3.DEF and 4.VSM Preset Setup TourService Menu Flow Chart Upperfocus Adjustment LocationsSolder Side TOPIf Circuit Adjustment AdjustmentsB1 Power Supply Focus AdjustmentAGC Take Over Other Delay PointPoint AGCVideo / Chroma Circuit Adjustment SUB Method of adjustment without measuring instrumentSUB Bright Ad justment RemoteColour Ⅱ CRT TintSocket BL ACK BL AdjustAd justment part Description Remote Secam Control unitPosition Deflection Circuit AdjustmentTOP VSM Preset SettingVER. Scurve ScurvePurity Adjustment Purity / Convergence Adjustment# P/C Magnets Dynamic Convergence Adjustment Static Convergence AdjustmentReplacement Steps Replacement of Chip ComponentSoldering Iron AV-20N3 AV-20NMG3 AV-20NMG3B

ADJUSTMENT LOCATIONS

(SOLDER SIDE)

TOP

MAIN PWB

UPPER:FOCUS

LOWER:SCREEN