JVC HV-29WZ, HV-29WZ/-A, HV-29WZ/AU, HV-29WZ/EE, HV-29WZ/HK Service Manual

HV-29WZ

SERVICE MANUAL

COLOUR TELEVISION

HV-29WZ HV-29WZ HV-29WZ HV-29WZ HV-29WZ

/HK

/-A

/AU

/EE

BASIC CHASSIS

MF

[RM-C1030] [RM-C1031]

HV-29WZ HV-29WZ/HK

HV-29WZ/-A

HV-29WZ/AU

HV-29WZ/EE

CONTENTS

! SPECIFICATIONS 2	! SPECIFIC SERVICE INSTRUCTIONS 8
! SAFETY PRECAUTIONS 3	! SERVICE ADJUSTMENTS 15
! MAIN DIFFERENCE LIST 4	! PARTS LIST 37
! FEATURES 4	OPERATING INSTRUCTIONS
! FUNCTIONS 6	STANDARD CIRCUIT DIAGRAM 2-1

1	COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.	No.52019
		Sep. 2002

HV-29WZ

SPECIFICATIONS

Item	Content

Dimensions ( W×H×D )

Mass

TV RF System

Colour System

Stereo System

Teletext System

		VL
	Receiving	VH
	Frequency	UHF
		CATV
	Intermediate	VIF
	Frequency	SIF
		PAL
	Colour Sub Carrier	SECAM
	Frequency
		NTSC

Power Input

Power Consumption

Aerial Input Term

Picture Tube

High Voltage

Audio Power Output

Speaker

		Video
		Audio(L/R)
	Input	S / Video
	Terminal
		Component Cb/Cr
	Output	Video
	Terminal	Audio(L/R)
	AV Compulink
	Headphone jack

Remote Control Unit

81.2cm×58.4cm×51.8cm
46.0kg
B/G, I, D/K, K1, M
PAL / SECAM / NTSC 3.58 / NTSC 4.43
A2 (B/G) / NICAM (B/G, I, D/K)
Fastext (UK system) *	[ * Without TEXT mode : HV-29WZ/HK ]
WST(world standard text)
46.25MHz 168.25MHz

175.25MHz 463.25MHz 471.25MHz 863.25MHz

Mid (X Z+2, S1 S10), Super (S11 S20) & Hyper (S21 S41) 38.0MHz

32.5MHz(5.5MHz) / 32.0MHz(6.0MHz) / 3.15MHz(6.5MHz) / 33.5MHz (4.5MHz) 4.43MHz

4.40625MHz / 4.25MHz 3.58MHz / 4.43MHz

AC 110V 240V , 50/60Hz Max 215W / Avg. 153W 75Ωunbalanced, Coaxial 29”(68cm) measured diagonally

+1.0kV

31.5kV -1.5kV (At zero beam current ) 7W + 7W

6.5cm×13cm Oval type×2 1Vp-p 75Ω

500Mv(rms) (-4dBs), High Impedance

Y : 1V(p-p) Positive (Negative sync provided) 75Ω C : 0.286V(p-p) (burst signal), 75Ω

Y : 1V(p-p), 75Ω

Cb : B-Y 0.7V(p-p), 75Ω / Cr : R-Y 0.7V(p-p), 75Ω 1V(p-p) 75Ω

500mV(rms) (-4dBs), Low Impedance Mono mini jack (φ3.5mm )

Stereo mini jack (φ3.5mm )

RM-C1030 (AA/R06 / UM-3 , Dry cell battery×2)

: HV-29WZ / HV-29WZ/-A / HV-29WZ/AU & HV-29WZ/EE RM-C1031 (AA/R06 / UM-3 , Dry cell battery×2) : HV-29WZ/HK

Design & specifications are subject to change without notice.

2

No.52019

HV-29WZ

SAFETY PRECAUTIONS

1.The design of this product contains special hardware, many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer.

Replacement parts must be identical to those used in the original circuits. Service should be performed by qualified personnel only.

2.Alterations of the design or circuitry of the products should not be made. Any design alterations or additions will void the manufacturer's warranty and will further relieve the manufacturer of responsibility for personal injury or property damage resulting therefrom.

3.Many electrical and mechanical parts in the products have special safety-related characteristics. T hese characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are

identified in the parts list of Service manual. Electrical components having such features are identified by shading on the schematics and by (!) on the parts list in Service manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended

replacement part shown in the parts list of Service manual may cause shock, fire, or other hazards .

4.Don't short between the LIVE side ground and ISOLATED (NEUTRAL) side ground or EARTH side ground when

repairing.

Some model's power circuit is partly different in the GND. The difference of the GND is shown by the LIVE : (") side GND, the ISOLATED(NEUTRAL) : (#) side GND and EARTH : ($) side GND. Don't short between the LIVE side GND and

ISOLATED(NEUTRAL) side GND or EARTH side GND and never measure with a measuring apparatus (oscilloscope etc.) the LIVE side GND and ISOLATED(NEUTRAL) side GND or EARTH side GND at the same time.

If above note will not be kept, a fuse or any parts will be broken.

5.If any repair has been made to the chassis, it is recommended that the B1 setting should be checked or adjusted (See ADJUSTMENT OF B1 POWER SUPPLY).

6.The high voltage applied to the picture tube must conform with

that specified in Service manual. Excessive high voltage can cause an increase in X-Ray emission, arcing and possible component damage, therefore operation under excessive high voltage conditions should be kept to a minimum, or should be prevented. If severe arcing occurs, remove the AC power

immediately and determine the cause by visual inspection (incorrect installation, cracked or melted high voltage harness, poor soldering, etc.). To maintain the proper minimum level of soft X-Ray emission, components in the high voltage circuitry including the picture tube must be the exact replacements or

alternatives approved by the manufacturer of the complete product.

7.Do not check high voltage by drawing an arc. Use a high voltage meter or a high voltage probe with a VTVM. Discharge the picture tube before attempting meter connection, by connecting

a clip lead to the ground frame and connecting the other end of the lead through a 10kΩ 2W resistor to the anode button.

8.When service is required, observe the original lead dress. Extra precaution should be given to assure correct lead dress in the high voltage circuit area. W here a short circuit has occurred, those components that indicate evidence of overheating should

be replaced. Always use the manufacturer's replacement components.

9.Isolation Check

(Safety for Electrical Shock Hazard)

After re-assembling the product, always perform an isolation check on the exposed metal parts of the cabinet (antenna

terminals, video/audio input and output terminals, Control knobs, metal cabinet, screwheads, earphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.

(1)Dielectric Strength Test

The isolation between the AC primary circuit and all metal parts exposed to the user, particularly any exposed metal part having a return path to the chassis should withstand a voltage of 3000V AC (r.m.s.) for a period of one second.

(. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance

rated up to 120V, and 3000V AC (r.m.s.) to an appliance rated 200V or more, for a period of one second.)

This method of test requires a test equipment not generally found in the service trade.

(2)Leakage Current Check

Plug the AC line cord directly into the AC outlet (do not use a line

isolation transformer during this check.). Using a " Leakage Current Tester", measure the leakage current from each exposed metal part of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth ground (water pipe, etc.). Any leakage current must not exceed

0.5mA AC (r.m.s.).

However, in tropical area, this must not exceed 0.2mA AC (r.m.s.).

" Alternate Check Method

Plug the AC line cord directly into the AC outlet (do not use a line

isolation transformer during this check.). Use an AC voltmeter having 1000 ohms per volt or more sensitivity in the following manner. Connect a 1500Ω 10W resistor paralleled by a 0.15µF

AC-type capacitor between an exposed metal part and a known good earth ground (water pipe, etc.). Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed

metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Any voltage measured must not exceed 0.75V AC (r.m.s.). This corresponds to 0.5mA AC (r.m.s.).

However, in tropical area, this must not exceed 0.3V AC ( r.m.s.). This corresponds to 0.2mA AC (r.m.s.).

AC VOLTMETER (HAVING 1000 Ω/V,

OR MOR E SENSITIVITY)

0.15μF AC-TYPE

PLACE THIS PROBE

ON EACH EXPOSED

1500 Ω 10W	METAL PART
GOOD EARTH GROUND

No.52019

3

HV-29WZ

MAIN DIFFERENCE LIST

!

Model name

HV-29WZ

HV-29WZ/HK

HV-29WZ/-A

HV-29WZ/AU

HV-29WZ/EE

Part name

MICOM PWB

SMF-0M706A

SMF-0M707A

SMF-0M708A

SMF-0M706A

SMF-0M709A

!

PICTURE TUBE

A68QCU257XV9K

A68QCU257XV9S

A68QCU257XV9K

QMP40D0-200J5

QMPR010-200-E2

!

POWER CORD

or

QMPN050-200-E2

or

QMP2980-185J5

QMP40D0-200J5

QMP40D0-200J3

QMPR010-200-K2

!

REAR COVER

GG10192-005B-H

GG10192-006B-H

GG10192-005B-H

GG10192-006B-H

GG10192-005A-H

!

INST BOOK

LCT1200-001A-H

LCT1201-001A-H

LCT1200-001A-H

LCT1202-001A-H

REMOTE CONTROL UNIT

RM-C1030-1H

RM-C1031-2H

RM-C1030-1H

!

DIGEST MANUAL

×

×

LCT1203-001A-H

×

×

!

CONVERSION PLUG

×

×

QAM0055-001

×

×

WARRANTY CARD

×

×

×

BT-56001-2

BT-54012-2

S CENTER LIST

×

×

×

BT-56002-2

×

STICKER

×

×

×

GG40016-002A-H

×

TELETEXT

FASTEXT

○

×

○

○

○

WST

FEATURES

"New chassis design enable use of an interactive on screen control.

"The TELETEXT SYSTEM has a built-in FASTEXT (UK system), and WST (world standard text system).

* Except HV-29WZ/HK.

"Built-in ECO (ECONOMY, ECOLOGY) MODE.

In accordance with the brightness in a room, the brightness and/or contrast of the picture can be adjusted automatically to make the optimum picture which is easy on the eye.

"Pure FLAT CRT reproduce fine textured.

"Digi Pure pro : Auto digi pure with motion picture compensation.

"Because this TV unit corresponds to multiplex broadcast, users can enjoy music programs and sporting events with live realism. In addition, BILINGUAL programs can be heard in their original language.

4

No. 52019

HV-29WZ

SYSTEM BLOCK DIAGRAM

	MICON PWB
	IC 004		IC 001
		MICRO COMPUTER
	MEMORY
		SDA 0
		SCL 0
		SDA 2	SDA 1
		SCL 2	SCL 1
	MAIN PWB
	IC 661		IC 301
	3D SURROUND		DEF & RGB
	/ VOL / TONE		PROCESSOR
	IC 101		TU0 01
	MULTI SOUND
			TUNER
	PROCESSOR
	AV SW PWB		100Hz PWB
			IC 101
	IC 101		VIDEO PROCESS
	SW		&
			CODEC
			IC 201
			SAMPLE RATE
			CONVERTER
			IC 301
			ENHANCE

No. 52019

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HV-29WZ

FUNCTIONS

■ Front Terminal & Control

1 HEADPHONE jack	7 Remote Control SENSOR
2 VIDEO-4 terminal (S-VIDEO / VIDEO / L/MONO / R)	8 ECO SENSOR
3 MENU/OK Button	9 CINEMA SURROUND LAMP
4 CHANNEL -/+ (MENU UP/DOWN) Button	A ECO LAMP
5 VOLUME -/+ (MENU LEFT/RIGHT) Button	B POWER LAMP
6 TV/VIDEO / EXIT Button	C POWER SW Button

■ Rear Terminal

1VIDEO-1 (INPUT) terminal (S, V, L, R) 2VIDEO-2 (INPUT) terminal (V, L, R)

3VIDEO-3 (INPUT) terminal (V/Y, Cb, Cr, L, R) / COMPONENT

4OUTPUT (AUDIO/VIDEO) terminal (V, L, R)

5AV COMPULINK terminal

6AERIAL socket

6

No. 52019

HV-29WZ

■Remote Control Unit

RM-C1030 : HV-29WZ, HV-29WZ/-A, HV-29WZ/AU, HV-29WZ/EE

2

5

6

7

9

10

11

12

16

17

	1 POWER Key
	2 MUTING Key
1	3 ZOOM Key

34 CINEMA SURROUND Key

45 COLOUR SYSTEM Key

86 SOUND SYSTEM Key

7 DISPLAY Key

138 MENU / OK Key

9 FUNCTION Key ( ▲/▼ &/Key ) A STEREO / Key

	14	: Stereo / : Mono
		: Bilingual (sub )
	15	: Bilingual (sub )
	18	B TV/VIDEO Key
		C PICTURE MODE Key
	19	D TV/TEXT Key
		E CHANNEL Key

20	F -/-- Key
	G RETURN + Key
	H CHANNEL +/- Key
	I VOLUME +/- Key
	J COLOUR Key
	K TELETEXT Key

RM-C1031 : HV-29WZ/HK

2

5

6

7

9

10

11

12

16

17

	1 POWER Key
	2 MUTING Key
1	3 ZOOM Key

34 CINEMA SURROUND Key

45 COLOUR SYSTEM Key

86 SOUND SYSTEM Key

7 DISPLAY Key

		8 MENU / OK Key
		9 FUNCTION Key ( ▲/▼ & / Key )
		A STEREO		/ Key
	14		: Stereo /	: Mono
			: Bilingual (sub )
	15		: Bilingual (sub )
	18	B TV/VIDEO Key
		C PICTURE MODE Key

19E CHANNEL Key F -/-- Key

G RETURN + Key H CHANNEL +/- Key I VOLUME +/- Key J COLOUR Key

No. 52019

7

HV-29WZ

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		[CAUTION]
"	After removing the rear cover.	" When erecting the chassis, be careful so that there will be no
1.	Remove the 5 screws marked " as shown in the Fig. 1.		contacting with other PW Board.
2.	Withdraw the AV terminal board toward you.	" Before turning on power, make sure that the wire connector is
			properly connected.
REMOVING THE CHASSIS		" When conducting a check with power supplied, be sure to confirm
			that the CRT EARTH WIRE (BRAIDED ASS’Y) is connected to
"
	After removing the rear cover.		the CRT SOCKET PW board.
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	WIRE CLAMPING AND CABLE TYING
	cabinet.
2.	Withdraw the chassis backward.	1.	Be sure to clamp the wire.
	(If necessary, take off the wire clamp, connectors etc.)	2.	Never remove the cable tie used for tying the wires together.
			Should it be inadvertently removed, be sure to tie the wires with

REMOVING THE SPEAKER	a new cable tie.

"After removing the rear cover.

1.Remove the 2 screws marked #, and remove the SP holder as shown in Fig. 1.

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

2. Remove the claw marked $ push the SP holder as shown in Fig. 2.

3. Follow the same steps when removing the other speaker.

SP HOLDER

	SPEAKER
SPEAKER	CLAW

D

CLAW

SP HOLDER

SP HOLDER

[SIDE VIEW]

Fig. 2

8

No.52019

HV-29WZ

FRONT CABINET

C

SPEAKER

See Fig. 2

C

SPEAKER

CRT SOCKET

PWB

FRONT CONTROL

PWB (L)

CONTROL

MICOM PWB

BASE

POWER & DEF.

PWB

CLAW

FRONT

CONTROL

CHASSIS

PWB (R)

AV

TERMINAL

BLK PWB

BOARD

CONTROL

BASE

100Hz PWB

CLAW

MAIN PWB

AV SW PWB

B

(×5)

POWER CORD

REAR COVER

A(×16)

Fig. 1

No.52019

9

HV-29WZ

REMOVING THE CRT

Replacement of the CRT should be performed by 2 or more persons.

• After removing the cover, chassis etc.,

1.Putting the CRT change table on soft cloth, the CRT change table should also be covered with such soft cloth (shown in Fig.3).

2.While keeping the surface of CRT down, mount the TV set on the CRT change table balanced will as shown in Fig.4.

3.Remove 4 screws marked by arrows with a box type screw driver as shown in Fig.4.

• Since the cabinet will drop when screws have been removed, be sure to support the cabinet with hands.

4.After 4 screws have been removed, put the cabinet slowly on cloth (At this time, be carefully so as not to damage the front surface of the cabinet) shown in Fig.5.

•The CRT should be assembled according to the opposite sequence of its dismounting steps.

The CRT change table should preferably be smaller that the CRT surface, and its height be about 35cm. (Fig.3)

About CRT Spacer (Fig.4)

An appropriate CRT spacer should be used in the corresponding CRT in accordance with the type of the CRT.

When a CRT is replaced, special attention should be paid to this matter.

COATING OF SILICON GREASE FOR ELECTRICAL INSULATION ON THE CRT ANODE CAP SECTION.

•Subsequent to replacement of the CRT and HV transformer or repair of the anode cap, etc. by dismounting them, be sure to coat silicon grease for electrical insulation as shown in Fig.6.

Wipe around the anode button with clean and dry cloth. (Fig.6) Coat silicon grease on the section around the anode button. At this time, take care so that any silicon greases dose not stick to the anode button. (Fig.7)

Silicon grease product No. KS - 650N

CRT	Anode button

Silicon grease coating

Fig. 6

CRT CHANGE TABLE

APPROX.

35cm

CLOTH

Fig. 3

Fig. 4

CRT

CABINET	CRT
	CHANGE TABLE
	Fig. 5
Approx.	Silicon grease
20mm (Do not	should be coated
coat grease on	by 5mm or more
this section	from the outside
	diameter of
	anode cap.
Anode button	Coating position
(No sticking of
silicon grease)	of silicon grease
	Anode cap
	Fig. 7

10

No. 52019

REPLACEMENT OF MEMORY ICs

1. Memory ICs

This TV use memory ICs. In the memory ICs, there are memorized data for correctly operating the video and deflection circuits. When replacing memory ICs, be sure to use ICs written with the initial values of data.

2.Procedure for replacing memory ICs

(1)Power off

Switch the power off and unplug the power cord from the wall outlet.

(2)Replace ICs.

Be sure to use memory ICs written with the initial data values.

(3)Power on

Plug the power cord into the wall outlet and switch the power on.

HV-29WZ

SERVICE MENU

1. IF	2. V/C
3. AUDIO	4. DEF
5. VSM PRESET	6. STATUS
7. WB PRESET	8. SHIPPING(OFF)
9. BUS FREE
1-9 : SELECT	DISP : EXIT

Fig.1

(4)Check and set SYSTEM CONSTANT SET:

* It must not adjust without signal.

1)Press the DISPLAY key and the PICTURE MODE key of the REMOTE CONTROL UNIT simultaneously.

2)The SERVICE MENU screen of Fig. 1 will be displayed.

3)While the SERVICE MENU is displayed, press the DISPLAY key and PICTURE TUBE key simultaneously, and the SYSTEM CONSTANT SET screen of Fig. 2 will be displayed.

4)Check the setting values of the SYSTEM CONSTANT SET of Table 1. If the value is different, select the setting item with the FUNCTION ▲/▼ key, and set the correct value with the FUNCTION / key.

5)Press the MENU(OK) key to memorize the setting value.

6)Press the INFORMATION key, and return to the normal screen.

SYSTEM CONSTANT SET

1. TEXT **

+OK : STORE DISP : EXIT

Fig.2

2. BLUE BACK MUTE	**
3. E.M.C	**
4. WHITE BACK	**
5. COLOUR AUTO	**
6. PICTURE TILT	**

(5)Setting of receive channels

Set the receive channel.

For setting, refer to the OPERATING INSTRUCTIONS.

(6)Setting of SERVICE MENU

Verify the setting items of the SERVICE MENU of Table 2, and reset where necessary.

For setting, refer to the SERVICE ADJUSTMENTS.

(7)User settings

SERVICE MENU KEY

							ZOOM
							(ASPECT)
SERVICE							key
MENU /
& SYSTEM							FUNCTION key
CONSTANT		(					▲/▼ & / key)
key
							MENU / OK key
							MEMORY
							(STORE) key
							SETTING ITEM
							SELECT key
							(Numbers key)

Check the user setting values of Table 3, and if setting value is different, set the correct value.

For setting, refer to the OPERATING INSTRUCTIONS.

No. 52019

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