JVC HV-29LPZ/EE, HV-29LPZ/HK Replacement of Chip Component, Soldering Iron, Replacement Steps

Page 35

HV- 29LPZ

REPLACEMENT OF CHIP COMPONENT

!CAUTIONS

1.Avoid heating for more than 3 seconds.

2.Do not rub the electrodes and the resist parts of the pattern.

3.When removing a chip part, melt the solder adequately.

4.Do not reuse a chip part after removing it.

!SOLDERING IRON

1.Use a high insulation soldering iron with a thin pointed end of it.

2.A 30w soldering iron is recommended for easily removing parts.

!REPLACEMENT STEPS

1.How to remove Chip parts

#Resistors, capacitors, etc

(1)As shown in the figure, push the part with tweezers and alternately melt the solder at each end.

(2) Shift with tweezers and remove the chip part.

2.How to install Chip parts

#Resistors, capacitors, etc

(1)Apply solder to the pattern as indicated in the figure.

(2)Grasp the chip part with tweezers and place it on the solder. Then heat and melt the solder at both ends of the chip part.

#Transistors, diodes, variable resistors, etc

(1)Apply extra solder to each lead.

SOLD E R

SOLD E R

(2)As shown in the figure, push the part with tweezers and alternately melt the solder at each lead. Shift and remove the chip part.

Note : After removing the part, remove remaining solder from the pattern.

#Transistors, diodes, variable resistors, etc

(1)Apply solder to the pattern as indicated in the figure.

(2)Grasp the chip part with tweezers and place it on the solder.

(3)First solder lead A as indicated in the figure.

A

B

C

(4) Then solder leads B and C.

A

B

C

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Contents HV-29LPZ HV-29LPZ HV-29LPZ HV-29LPZ ContentsSpecifications Safety Precautions Main Difference List FeaturesSync SEP PWB System Block DiagramMicom PWB Main PWBFront Terminal & Control FunctionsSUB-PICTURE Remote Control UnitDisassembly Procedure Specific Service InstructionsSpeaker BOX Control Base Micom Power & DEF PWB Claw ChassisHV- 29LPZ DomeCloth CRT Cabinet Change Table Removing the CRTSilicon grease product No. KS 650N CRT Change Table ApproxSystem Constant SET Setting item Setting value Setting Values of System Constant SET TableService Menu Setting Items Table Model No Setting itemSound User Setting Values TablePicture Setting Picture FeaturesMeasuring Instrument and Fixtures Service AdjustmentsBefore Starting Service Adjustment Adjustment ItemsFront Adjustment LocationsFron T TOPZoom Aspect Freq Basic Operation Service MenuTool of Service Menu Operation Service Menu ItemsService Menu Basic Operation of Service MenuVSM Preset WB Preset Shipping OFFService Menu Service Menu ScreenAUDIO, 6. STATUS, 9. Shippingoff & 0. BUS Free Method of SettingRelease of Service Menu DEF PWB AdjustmentChecking Item RGB BLKScreen VR Adjustment of Focus & ScreenAdjustment Signal FocusBright VSM Preset SettingStandard Soft Setting Values of VSM Preset Bright Sharp Colour TintVIDEO/CHROMA Circuit Adjustment PAL/SECAM/NTSC Colour Ⅰ Method of adjustment without measuring instrumentPAL/SECAM/NTSC Colour Ⅱ CRT SUB Tint Ⅱ CRT SUB TintFixed Value DEF. Circuit AdjustmentRegular Zoom 100Hz 60Hz pAspect Zoom Screen Regular Position AdjustmentShift SizeFixed Mode ADJ. Item RegularCenter AspectCOR-UP TrapezCOR-PIN Corner13.V.LIN LIN12.V-S.CR Quasi Audio Circuit AdjustmentAUDIODo not adjust Setting item Variable range Fixed value Purity Magnet PURITY, Convergence AdjustmentPurity Adjustment MagnetsFront View Static Convergence Adjustment# Resistors, capacitors, etc Replacement of Chip ComponentReplacement Steps Soldering IronHV- 29LPZ