JVC HV-29LPZ/EE, HV-29LPZ/HK, HV-29LPZ/-A Specific Service Instructions, Disassembly Procedure

Page 8

HV- 29LPZ

SPECIFIC SERVICE INSTRUCTIONS

DISASSEMBLY PROCEDURE

REMOVING THE REAR COVER

1.Unplug the power cord.

2.Remove the 16 screws marked ! as shown in the Fig. 1.

3.Withdraw the rear cover toward you.

CHECKING THE PW BOARD

To check the back side of the PW Board.

1)Pull out the chassis . (Refer to REMOVING THE CHASSIS).

2)Erect the chassis vertically so that you can easily check the back side of the PW Board.

REMOVING THE AV TERMINAL BOARD

"After removing the rear cover.

1.Remove the 5 screws marked " as shown in the Fig. 1.

2.Withdraw the AV terminal board toward you.

REMOVING THE CHASSIS

"After removing the rear cover.

1.Slightly raise the both sides of the chassis by hand and remove the 2 claws under the both sides of the chassis from the front cabinet.

2.Withdraw the chassis backward.

(If necessary, take off the wire clamp, connectors etc.)

REMOVING THE DOME SPEAKER BOX / SPEAKER

"After removing the rear cover.

1.As shown in Fig. 1, remove the 2 screws marked #, then remove the dome speaker box.

2.Remove the 5 screws marked $ as shown in the Fig.2, then remove the dome box.

3.Remove the 4 screws marked % as shown in the Fig.2, then remove the HONE RING.

4.Remove the 4 screws marked & as shown in the Fig.2, then remove the speaker.

5.Follow the same steps when removing the other hand dome speaker box / speaker.

NOTE : When removing the screws marked # of the dome speaker box, remove the lower side screw first, and then remove the upper one.

REMOVING THE TWEETER SPEAKER

"After removing the rear cover.

1.Remove the 7 screws marked ' as shown in the Fig.2, then remove the HONE PANEL.

2.Then remove the tweeter speaker screws to remove it.

[CAUTION]

"When erecting the chassis, be careful so that there will be no contacting with other PW Board.

"Before turning on power, make sure that the wire connector is properly connected.

"When conducting a check with power supplied, be sure to confirm that the CRT EARTH WIRE (BRAIDED ASS’Y) is connected to the CRT SOCKET PW board.

WIRE CLAMPING AND CABLE TYING

1.Be sure to clamp the wire.

2.Never remove the cable tie used for tying the wires together. Should it be inadvertently removed, be sure to tie the wires with a new cable tie.

 

DOME SPEAKER BOX

HORN

SPEAKER

 

(Tweeter)

 

 

 

 

F

(×4)

 

 

E

 

 

(×4)

G

 

 

(×7)

 

 

 

SPEAKER

 

HORN

 

 

PANEL

HORN RING

 

 

DOME BOX

 

 

D

 

 

(×5)

Fig. 2

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No.52012

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Contents Contents HV-29LPZ HV-29LPZ HV-29LPZ HV-29LPZSpecifications Safety Precautions Features Main Difference ListSystem Block Diagram Micom PWBMain PWB Sync SEP PWBFunctions Front Terminal & ControlRemote Control Unit SUB-PICTURESpecific Service Instructions Disassembly ProcedureControl Base Micom Power & DEF PWB Claw Chassis HV- 29LPZDome Speaker BOXRemoving the CRT Silicon grease product No. KS 650NCRT Change Table Approx Cloth CRT Cabinet Change TableSystem Constant SET Setting Values of System Constant SET Table Service Menu Setting Items TableModel No Setting item Setting item Setting valueUser Setting Values Table Picture SettingPicture Features SoundService Adjustments Before Starting Service AdjustmentAdjustment Items Measuring Instrument and FixturesAdjustment Locations Fron TTOP FrontBasic Operation Service Menu Tool of Service Menu OperationService Menu Items Zoom Aspect FreqBasic Operation of Service Menu VSM PresetWB Preset Shipping OFF Service MenuService Menu Screen Service MenuAUDIO, 6. STATUS, 9. Shippingoff & 0. BUS Free Method of SettingRelease of Service Menu Adjustment Checking ItemRGB BLK DEF PWBAdjustment of Focus & Screen Adjustment SignalFocus Screen VRVSM Preset Setting Standard Soft Setting Values of VSM PresetBright Sharp Colour Tint BrightVIDEO/CHROMA Circuit Adjustment Method of adjustment without measuring instrument PAL/SECAM/NTSC Colour ⅠPAL/SECAM/NTSC Colour Ⅱ CRT SUB Tint SUB Tint Ⅱ CRTDEF. Circuit Adjustment Regular Zoom100Hz 60Hz p Fixed ValueAdjustment ShiftSize Aspect Zoom Screen Regular PositionMode ADJ. Item Regular CenterAspect FixedTrapez COR-PINCorner COR-UP13.V.LIN LIN12.V-S.CR Quasi Audio Circuit AdjustmentAUDIODo not adjust Setting item Variable range Fixed value PURITY, Convergence Adjustment Purity AdjustmentMagnets Purity MagnetStatic Convergence Adjustment Front ViewReplacement of Chip Component Replacement StepsSoldering Iron # Resistors, capacitors, etcHV- 29LPZ