JVC HV-44PRO, HV-44PRO/-A, HV-44PRO/EE, HV-44PRO/M Service Manual

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Page 1

SERVICE MANUA

REAR PROJECTION TELEVISION

HV-44PRO, HV-44PRO HV-44PRO

/EE ,

HV-44PRO

/-A

TABLE OF CONTENTS

1 PRECAUTION････････････････････････････････ 2 SPECIFIC SERVICE INSTRUCTIONS ････････････････････････････････ 3 DISASSEMBLY ････････････････････････････････ 4 ADJUSTMENT ････････････････････････････････ 5 TROUBLE SHOOTING ････････････････････････････････

････････････････････････････････････････････････････････････････

･･･････････････････････････････････････････････

････････････････････････････････････････････････････････････････

･･････････････････････････････････････････････････････････

････････････････････････････････････････････････････････････････

････････････････････････････････････

････････････････････････････････････････････････････････････････

･･････････････････････････････････

････････････････････････････････････････････････････････････････

･･･････････････････････････････････

････････････････････････････････････････････････････････････････

･･････････････････････････ 1-21

････････････････････････････････････････････････････

････1-3

････････

･･･････････････1-4

･･････････････････････････････

･･1-6

････

･･･1-7

･･････

No. 52118

2003/11

Page 2

SPECIFICATION

Item

Dimensions(W x H x D)

Mass

TV RF System Colour System

95.4cm × 122.3cm × 55.1cm

50.0kg

CCIR B/G, I, D/K,M

PAL / SECAM / NTSC3.58 / NTSC4.43

Content

Sound System A2(B/G), NICAM(B/G,I,D/K)

Teletext System Fastext(united kingdom system) , WST(world standard system) Receiving

Frequency

VHF 47MHz ~ 470MHz

UHF 470MHz ~ 862MHz

CATV

116MHz ~ 172MHz / 220MHz ~ 469MHz

VIF 38.9MHz(B/G,D/K,I) / 45.75MHz(M)Intermediate

Frequency

SIF 33.4MHz(5.5MHz : B/G) / 32.9MHz(6.0MHz : I)

32.4MHz(6.5MHz : D/K) / 41.25MHz(4.5MHz : M)

Colour Sub Carrier Frequency

PAL 4.43MHz

SECAM 4.40625MHz / 4.25MHz

NTSC 3.58MHz / 4.43MHz

Power Input

AC110V ~ AC240V, 50 / 60Hz

Power Consumption 250W(maximum)

Screen Size

Visible area : 112cm(measured diagonally), W : 97.6cm / H : 54.9cm

High voltage 21.3kV±0.1kV (at zero beam current)

Audio Output 20W + 20W(Rated)

Antenna Input 75Ω Unbalanced, coaxial

External Input

S-Video Mini-DIN-4 pin connector ×2

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

Video RCA pin jack ×3

1V(p-p), negative sync, 75Ω

Audio(L/R)

RCA pin jack ×10 500mV(rms) (-4dBs), High impedance

Component Video

RCA pin jack ×6 Y : 1V(p-p), positive(negative sync provided), 75Ω

: 0.7V(p-p), positive(negative sync provided), 75Ω

Video RCA pin jack ×1

External output

Audio(L/R)

1V(p-p), 75Ω RCA pin jack ×2

500mV(rms) (-4dBs), Low impedance

Remote Control Unit

RM-C261(AA/R06 dry cell battery ×2)

Design and specifications are subject to change without notice.

1-2 (No.52118)

Page 3

1.1 SAFETY PRECAUTIONS

SECTION 1

PRECAUTION

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. These 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. Where 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

0.15μF AC-TYPE

1500

GOOD EARTH GROUND

Ω

(HAVING 1000 OR MORE SENSITIVITY)

10W

Ω

/V,

PLACE THIS PROBE ON EACH EXPOSED METAL PART

(No.52118) 1-3

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2.1 FUNCTION

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

1-4 (No.52118)

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(No.52118) 1-5

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SECTION 3

DISASSEMBLY

This service manual does not describe DISASSEMBLY.

1-6 (No.52118)

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SECTION 4

ADJUSTMENT

4.1 ADJUSTMENT PREPARATION

(1) There are 2 ways of adjusting this TV: One is with the REMOTE

CONTROL UNIT and the other is the conventional method using adjustment parts and components.

(2) The setting (adjustment) using the REMOTE CONTROL UNIT

is made on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values.

(3) Make sure that connection is correctly made to AC power

source.

(4) Turn on the power of the TV and measuring instrument for

warming up for at least 30 minutes before starting adjustment.

(5) If the receive or input signal is not specified, use the most

appropriate signal for adjustment.

(6) Never touch parts (such as variable resistors, transformers and

condensers) not shown in the adjustment items of this service adjustment.

4.3 ADJUSTMENT ITEM

! RASTER SLANT/FOCUS ! BEAM ALIGNMENT ! CENTER MAGNET ! HIGH VOLTAGE REGULATION ! CUT-OFF

4.2 MEASURING INSTRUMENT

(1) DC voltmeter (or digital voltmeter) (2) HV voltmeter (3) Oscilloscope (4) Signal generator (Pattern generator) (5) TV audio multiplex signal generator (6) Remote controller

! DEFLECTION CIRCUIT ! LENS FOCUS & ELECTRONIC FOCUS ! CONVERGENCE ! LENS FOCUS

4.4 BASIC OPERATION IN SVC(SERVICE MENU) MODE

4.4.1 HOW TO ENTER THE SVC(SERVICE MENU) MODE

(1) Press the [LIST] key and [PSM] key on the REMOTE

CONTROL UNIT simultaneously. (2) The SVC(service menu) mode is displayed. (3) Select the “SERVICE 1~5” and “OPTION 1~4” with the [SWAP]

key. (4) Select the setting item with the ["/#] key, and set the setting

value with the [$/%] keys. (5) Press the [OK] key to memorize the setting value. (6) Press the [TV/AV] key, and return to the normal screen.

SVC(service menu) mode

(No.52118) 1-7

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1-8 (No.52118)

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(No.52118) 1-9

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1-10 (No.52118)

Page 11

4.6 ADJUSTMENT PROCEDURE

4.6.1 RASTER SLANT / FOCUS

Item

RASTER SLANT / FOCUS adjustment

Measuring

Instrument

Remote control Unit

Signal generator

Test point Adjustment part Description

G DEF. YOKE R DEF. YOKE B DEF. YOKE

1) The lens focus and electrical focus must be provisional

alignment.

2) Receive a crosshatch signal.

3) Enter the SVC MODE.

4) Press the keys of remote controller for adjustment ( →

[5] →[OK]→ ) to reset the convergence.

5) Set only green to be appeared on the screen.(cover red and

blue CRT)

6) Carefully rotate the DY of the green CRT so that the slant of

raster become the figure.

7) Set two color (R or B and G) to be appeared on the screen.

Set the slant of Red or Blue correspond to the green.

Note:

1. Tighten the tightening iron after loose completely. Tighten iron

which fixing DY when adjusting raster slant and set position.

2. Never control to the tightening iron which fixed, it’s condition is

not untied.

4.6.2 BEAM ALIGNMENT

Item

2-POLE MAGNET adjustment

BEAM SH APE (4 & 6-POLE MAGNET) adjustment

Measuring

Instrument

Signal generator

Signal generater

Test point Adjustment part Description

G FOCUS VR 2 pole magnet

1) Heat run over 60 minutes.

Pre-adjust raster slope, raster position & lens focus.

Check if the magnet is located 45mm from the end of CRT.

Receive dot pattern signal.

5) Make green raster using lens cover.

Check the center position of dot pattern on the center of the screen after turning green focus volume left.

Turning green focus volume right and adjust 2-pole magnet so the position to coincide.

Adjust not to shift the screen by turning green focus volume left & right.

If the screen shifts, readjust 6)~8) above.

10)

Do the same method in red and blue. Here, be careful not to be stained.

4 pole magnet 6 pole magnet

1) Do after 2-pole magnet adjustment.

Make green raster using lens cover and turn the focus

volume right.

Make the dot in the center a perfect circle using 4 & 6-pole magnet.

Do the same method in red & blue.

Fasten the magnet after adjustment.

Adjust focus accurately.

(No.52118) 1-11

Page 12

4.6.3 CENTERING MAGNET

Item

CENTERING MAGNET adjustment

4.6.4 HIGHT VOLTAGE REGULATION

Item

HIGHT VOLTAGE REGULATION adjustment

Measuring

Instrument

Signal generator

Remote controller

Measuring

Instrument

Digital MultiMeter (DMM)

Test point Adjustment part Description

D432 Heat sink of Q406 [DEF PWB]

G CENTERING magnet

R CENTERING magnet

B CENTERING magnet [DEF. YOKE]

VR401 [DEF.PWB]

1) Receive a cross-hatch.

2) Enter the SVC mode.

Press the keys of remote controller for adjustment

( →[5)→[OK]→ )to reset the convergence.

Make green raster using lens cover and coincide horizontal / vertical center lines of pattern with those of screen.

1) Switch picture mode to STANDARD in no signal input.

2) Connect “+” terminal(red) of DMM to the anode of D432 and “-”

terminal(black) to the heat sink of Q406.

Adjust VR401 so that the D432 terminal voltage is

21.3±0.1kV.

4.6.5 CUT-OFF

Item

CUT-OFF adjustment

Measuring

Instrument

Remote controller

Test point Adjustment part Description

R SCREEN VR G SCREEN VR B SCREEN VR [FOCUS PACK]

Enter the SVC mode.

Press the [ ] key on the remote controller for adjustment to display horizontal line. enter the SVC mode, the horizontal line might not be seen according to the position of screen VR.)

Adjust screen VR (R/G/B) in focus pack until brightness of red/blue/green horizontal line is about not to be seen. (at this moment, brightness of red, blue or green horizontal line should be equal to one another.)

Exit the adjustment mode by pressing the [ ] key.

(even though you

1-12 (No.52118)

Page 13

4.6.6 DEFLECTION CIRCUIT

1. Adjust differently based on input signal such as PAL or NTSC.

2. Picture mode is STANDARD mode it sets up and adjusts.

3. Reset the data in convergence adjustment mode ,quit the mode.

Convergence Mode : [SVC, ] key Data reset : [5], [OK] keys Adjustment mode out : [ ] key

[PAL mode]

Item

VERTICAL SHIFT adjustment

Measuring

Instrument

Signal generator

Remote controller

Test point Adjustment part Description

[SERVICE 2] VS

1) Receive a PAL circle pattern signal.

2) Enter the SVC mode.

3) Press the [SWAP] key, and enter the SERVICE 2 deflection

adjustment mode.

4) Select <VS> using ["/#] key.

5) Using [$/%] key to make A=B as shown in figure.

VERTICAL AMPLITUDE adjustment

HORIZONTAL SHIFT adjustment

E-W WIDTH adjustment

Signal generator

Remote controller

Signal generator

Remote controller

Signal generator

Remote controller

[SERVICE 2] VA

[SERVICE 2] HS

[SERVICE 2] EW

1) Receive a PAL cross-hatch pattern signal.

2) Enter the SVC mode.

3) Press the [SWAP] key, and enter the SERVICE 2 deflection

adjustment mode.

4) Select <VA> using ["/#] key.

5) Using [$/%] key, adjust the data value, so that the vertical

amplitude becomes about 92% of the screen size.

1) Receive a PAL circle pattern signal.

2) Enter the SVC mode.

3) Press the [SWAP] key, and enter the SERVICE 2 deflection

adjustment mode.

4) Select <HS> using ["/#] key.

5) Using [$/%] key to make C=D as shown in figure.

1) Receive a PAL cross-hatch pattern signal.

2) Enter the SVC mode.

3) Press the [SWAP] key, and enter the SERVICE 2 deflection

adjustment mode.

4) Select <EW> using ["/#] key.

5) Using [$/%] key, adjust the data value, so that the right and

left sides become about 92% of the screen size.

(No.52118) 1-13

Page 14

Item

E-W PARABOLA adjustment

Measuring

Instrument

Signal generator

Remote controller

Test point Adjustment part Description

[SERVICE 2]

1) Receive a PAL cross-hatch pattern signal.

2) Enter the SVC mode.

3) Press the [SWAP] key, and enter the SERVICE 2 deflection

adjustment mode.

4) Select <EP> using ["/#] key.

5) Using [$/%] key, adjust so that all vertical line become

adjustment.

E-W TRAPEZIUM adjustment

UPPER CORNER PINCUSHION adjustment

Signal generator

Remote controller

Signal generator

Remote controller

[SERVICE 2]

1) Receive a PAL cross-hatch pattern signal.

2) Enter the SVC mode.

3) Press the [SWAP] key, and enter the SERVICE 2 deflection

adjustment mode.

4) Select <ET> using PR ["/#] key.

5) Using [$/%] key, adjust to make the length of top horizontal

line same with it of the bottom horizontal line.

1) Receive a PAL cross-hatch pattern signal.

2) Enter the SVC mode.

3) Press the [SWAP] key, and enter the SERVICE 2 deflection

adjustment mode.

4) Select <UC> using ["/#] key.

5) Using [$/%] key, adjust the data value, so that the vertical

lines at the upper corner of the screen are as straight as

possible.

LOWER CORNER PINCUSHION adjustment

1-14 (No.52118)

Signal generator

Remote controller

[SERVICE 2]

1) Receive PAL cross-hatch pattern signal.

2) Enter the SVC mode.

3) Press the [SWAP] key, and enter the SERVICE 2 deflection

adjustment mode.

4) Select <LC> using ["/#] key.

5) Using [$/%] key, adjust the data value, so that the vertical

lines at the lower corner of the screen are as straight as

possible.

Page 15

Item

UPPER VERTICAL LINEARITY adjustment

Measuring

Instrument

Signal generator

Remote controller

Test point Adjustment part

[SERVICE 2] U-VL

Description

1) Receive PAL cross-hatch pattern signal.

2) Enter the SVC mode.

3) Press the [SWAP] key, and enter the SERVICE 2 deflection adjustment mode.

4) Select <U-VL> using ["/#] key.

5) Using [$/%] key, adjust the space of line at top and center bottom.

LOWER VERTICAL LINEARITY adjustment

VERTICAL LINEARITY adjustment

Signal generator

Remote controller

Signal generator

Remote controller

[SERVICE 2] L-VL

[SERVICE 2] VL

1) Receive PAL cross-hatch pattern signal.

2) Enter the SVC mode.

3) Press the [SWAP] key, and enter the SERVICE 2 deflection adjustment mode.

4) Select <L-VL> using ["/#] key.

5) Using [$/%] key, adjust the space of line at bottom and center become uniform.

1) Receive a PAL cross-hatch pattern signal.

2) Enter the SVC mode.

3) Press the [SWAP] key, and enter the SERVICE 2 deflection adjustment mode.

4) Select <VL> using ["/#] key.

5) Using [$/%] key, adjust the space of line at top, bottom and center become uniform.

AFC ANGLE adjustment

Signal generator

Remote controller

[SERVICE 2] A-ANG

1) Receive a PAL cross-hatch pattern signal.

2) Enter the SVC mode.

3) Press the [SWAP] key, and enter the SERVICE 2 deflection adjustment mode.

4) Select <A-ANG> using ["/#] key.

5) Using [$/%] key, adjust the vertical lines become straight.

(No.52118) 1-15

Page 16

Item

AFC BOW adjustment

Measuring

Instrument

Signal generator

Remote controller

Test point Adjustment part Description

[SERVICE 2] A-BOW

1) Receive PAL cross-hatch pattern signal.

2) Enter the SVC mode.

3) Press the [SWAP] key and enter the SERVICE 2 deflection adjustment mode.

4) Select <A-BOW> using ["/#] key.

5) Using [$/%] key, adjust the vertical lines become straight.

VERTICAL SIDE PIN CORRECTION adjustment

[NTSC mode]

Item

NTSC Mode Deflection adjustment

Signal generator

Remote controller

Measuring

Instrument

[SERVICE 2] SC

Test point Adjustment part Description

1) Receive PAL cross-hatch pattern signal.

2) Enter the SVC mode.

3) Press the [SWAP] key and enter the SERVICE 2 deflection adjustment mode.

4) Select <SC> using ["/#] key.

5) Adjust so that all distance between each vertical lines to be the same.

1) Adjust vertical size (VA Adjustment) until fourth vertical bar

from upper and lower center screen is accord with the edge of

the frame.

Adjust horizontal size (EW Adjustment) until third bar to indicate horizontal size of circle is accord with the edge of the frame.

Do other adjustments the same as in PAL mode.

1-16 (No.52118)

Page 17

4.6.7 LENS FOCUS & ELECTRONIC FOCUS [Preliminary steps]

Electronic focus, raster slope & raster position must be pre-adjusted.

Heat-run over 60 minutes.

Receive cross-hatch pattern.

Adjustment must be operated in a dark room(simple dark room) and pay attention not to touch the lens during adjustment.

Screen the optional two lens with a cover so that the single color is appeared on the screen.

6) When turn the light the lens at front, chromatic aberration which appeared in bright line of cross-hatch signal changed as figure.

Item

G-LENS adjustment

R-LENS adjustment

Measuring

Instrument

Signal generator

Remote controller

Signal generator

Remote controller

Test point Adjustment part Description

[LENS ASSY] G-LENS

[FOCUS PACK] G FOCUS VR

Turn the lens until the chromatic aberration changed blue

to red point.

Viewing the all screen, in no case of the chromatic aberration appeared slimly within 3.5 cross-hatch of the picture center. At this time, in case that the red chromatic aberration's bright line isn't equal, adjust G-LENS so that the red chromatic aberration is appeared more than previous time.

Switching the signal to circle pattern signal and operate adjustment minutely.

Adjust G-FOCUS control volume of focus pack so that the external big circle's part appeared clear.

Adjust accurately by repeat the upper control.

Especially, noting to the G-LIGHT because it influenced on picture's function.

[LENS ASSY] R-LENS

[FOCUS PACK] R FOCUS VR

Turn the lens until the chromatic aberration changed orange to scarlet.

Adjust the chromatic aberration so that it located center correctly.

Switching the signal to circle pattern signal and adjust it as same method of G-LENS.

Adjust as same method of G-LENS with red focus control volume of focus pack.

B-LENS adjustment

Signal generator

Remote controller

[LENS ASSY] B-LENS

[FOCUS PACK] B FOCUS VR

Turn the lens until the chromatic aberration changed purple

to green which of 3.5 cross-hatch part from picture's center toward left.

Adjust the chromatic aberration become center of purple and green. Note) After adjustment red, green & blue lens, remove lens cover and receive cross-hatch pattern and check the overall focus. If need, repeat above.

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Page 18

4.6.8 CONVERGENCE PRELIMINARY [Preliminary steps]

1) This adjustment should be performed after raster slant, raster position, horizontal and vertical adjustment.

2) This adjustment should be performed after warming up 60 minutes.

3) Do it always with crosshatch pattern.

4) Adjust for both PAL and NTSC system.

5) Use the jig screen with the cross-hatch pattern for each mode.

[Convergence key]

Convergence Mode : [SVC/ ] key

Cursor shift : [$/

Cursor movement/adjustment selection : [OK] key

Cursor color selection : [TV/AV] key

Adjustment mode out : [ ] key

Note :

When cursor flickers, its adjustment mode, and when quiescent, its cursor movement mode.

]

, [

"/#

] keys

Item

HORIZONTAL / VERTICAL PHASE adjustment

PATTERN POSITION adjustment

Measuring

Instrument

Remote controller

Test point Adjustment part Description

[CONVERGENCE] H.PHASE V.PHASE

Press the 9 & 5 keys to get into the PHASE adjustment

mode.

&&&& Horizontal PHASE Adjustment.

Press the [$/

keys and move the convex part to the

middle of TV screen.

&&&& Vertical PHASE Adjustment.

Press the [

"/#

] keys and move the convex part to the

middle of TV screen.

Press the [OK] key to escape from the PHASE adjustment mode.

[CONVERGENCE] POSITION

Change into pattern shift mode.

Press the numbers keys [9 & 4] to get into the PATTERN POSITION mode.

Make sure to overlap pattern and image. (Use MUTE key)

Accord the center of image and pattern. (Use

$/%],["/#]

[

Quit pattern shift mode. (Press [OK] key.)

Save adjusted phase/pattern position adjustment

keys)

mode.(Press [9/2 & OK] keys)

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Page 19

4.6.9 CONVERGENCE (R, G, B)

Item

GREEN CONVERGENCE adjustment

Measuring

Instrument

Remote controller

Test point Adjustment part Description

[CONVERGENCE] GREEN

Show the OSD on screen by pressing [2] key, then change

the OSD to green(G) adjustment mode with pressing [TV/AV] key.

Close the cover of red CRT and blue CRT so that green display on screen only.

Adjust to coincide green pattern with screen jig pattern. (Use [

$/%],["/#]

Move cursor and adjust convergence in same way with

keys)

item 3.

Here, do it in the same order from center listed in figure.

RED CONVERGENCE adjustment

BLUE CONVERGENCE adjustment

ADJUSTED Data saving

Remote controller

[CONVERGENCE] RED

[CONVERGENCE] BLUE

Show the OSD on screen by pressing [2] key, then change

the OSD to red(R) adjustment mode with pressing [TV/AV] key.

If the need arises, close the cover of the blue lens.

Coincide the red screen with the green screen in same way with that of green convergence adjustment.

1) Show the OSD on screen by pressing [2] key, then change the OSD to blue(B) adjustment mode with pressing [TV/AV] key.

2) Coincide the blue screen with the green screen in same way with that of blue convergence adjustment.

Save the data after adjustment. (Press [9], [1] & [OK] key)

Quit convergence adjustment mode. ([ ] key)

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Page 20

4.6.10 SUB-BRIGHT

Item

SUB-BRIGHT adjustment

4.6.11 DVCO

Item

DVCO check

Remote controller

Measuring

Instrument

Measuring

Instrument

Test point Adjustment part Description

[SERVICE 1] S-BRI

Receive any broadcast.

Enter SVC mode.

3) Press the [SWAP] key and enter the SERVICE1 deflection

adjustment mode.

4) Select <S-BRI> using [

Set the value with the [$/%] keys.

If the brightness is not the best with the initial setting value,

"/#

] keys.

make fine adjustment until you get the best brightness.

Save the data after adjustment. (Press [OK] key)

Quit adjustment mode. (use [TV/AV] key)

Test point Adjustment part Description

[SERVICE 1] DVCO

& It must not adjust without signal.

Tune the TV set to receive a any broadcast signal.

2) Enter the adjustment mode by pressing SVC button of remote

controller for adjustment, then select DVCO menu.

Operate auto adjustment with [

changed, auto adjustment has finished.

After finishing DVCO adjustment, save the data by pressing [OK] key.

key. If DVCO data is

4.6.12 PIP POSITION

Item

PIP POSITION adjustment

Remote controller

Measuring

Instrument

Test point Adjustment part Description

[SERVICE 5] M-HOR

After receiving a PAL signal, show the multi-picture scan screen on screen with pressing [SCAN] key.

Enter SVC mode.

Press the [SWAP] key and enter the SERVICE 5 deflection adjustment mode

Select <M-HOR> using [

Adjust M-HOR to symmetry of the left and right blank is 20mm±5mm with the [

When finishing adjustment, save the data by pressing [OK]

"/#

$/%

] keys.

key.

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Page 21

SECTION 5

TROUBLE SHOOTING

This service manual does not describe TROUBLE SHOOTING .

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Page 29

VICTOR COMPANY OF JAPAN, LIMITED

AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan

(No.52118)

Printed in Japan

WPC

JVC HV-44PRO, HV-44PRO/-A, HV-44PRO/EE, HV-44PRO/M Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SPECIFICATION

1.1 SAFETY PRECAUTIONS

2.1 FUNCTION

4.1 ADJUSTMENT PREPARATION

4.3 ADJUSTMENT ITEM

4.2 MEASURING INSTRUMENT

4.4 BASIC OPERATION IN SVC(SERVICE MENU) MODE

4.6 ADJUSTMENT PROCEDURE