JVC DT-V1710CG, DT-V1710CGE, DT-V1710CGU Service Manual

SERVICE MANUAL

MULTI-FORMAT MONITOR

BASIC CHASSIS

DT-V1710CG DT-V1710CG

For the specifications, adjustments or part lists of optional board IF-C01PNG (NTSC/PAL video input card) and IF-C01COMG (Component/RGB input card), refer to service manual DT-V1700CG

/E (No.51899).

1. PRECAUTIONS .......................................................................................................................................... 1-3

2. SPECIFIC SERVICE INSTRUCTIONS .......................................................................................................... 1-4

3. DISASSEMBLY ........................................................................................................................................... 1-5

4. ADJUSTEMNT .......................................................................................................................................... 1-13

5. TROUBLE SHOOTING .............................................................................................................................. 1-73

TABLE OF CONTENTS

No. 52152

2003/9

SPECIFICATIONS

Items Contents

Type

Picture Tube

Effective Screen Size

Input Signal Frequency

Video Band

Horizontal Resolution

Compliant Video Signal

Input Terminals

Remote Inputs

Audio Output

Environmental Conditions

Power Requirements

Power Consumption

Dimensions (W × H × D)

Mass

Accessory

Multi-format monitor

17” Flat

33cm(13”) × 25cm(9-7/8”) / 41cm(16-1/4”) [measured diagonally]

Horizontal : 15kHz/27kHz – 45kHz

Vertical : 50Hz – 80Hz

Component : 25MHz (-3dB)

Video (Y/C) : 8MHz (-3dB)

1080/60i : 800 TV lines

Video (Y/C) : 600 TV lines

NTSC (3.58 MHz)/PAL (4.43 MHz) (using the IF-C01PNG)

480i/576i/480p/576p/1080i (50 Hz/60 Hz/24psF)/720p (50 Hz/60 Hz) (using the IF-

C01COMG)

D1 serial digital (using the IF-C01SDG)

HD serial digital (using the IF-C12HSDG)

Installing an optional input card in SLOT1, 2, or 3 is required.

INPUT A/INPUT B : Terminals on the input card in SLOT1.

INPUT C/INPUT D : Terminals on the input card in SLOT2.

INPUT E/INPUT F : Terminals on the input card in SLOT3.

Point-of-contact connection, 1 line, D-sub connector (15-pin 3-line)

Serial connection, 1 line, D-sub connector (9-pin), compliant to RS-485

1W (monaural) 3-1/8” (8cm) round speaker ×1

Operating Temperature : 5°C – 35°C (41°F – 95°F)

Operating humidity : 20% – 80% (non-condensing)

120V/230V, 50Hz/60Hz

1.56A/0.9A (including input card)

39.5cm(15-5/8”) × 33.4cm(13-1/4”) × 46.7cm(18-3/8”)

(not including wide mask and input card)

23.7 kg (not including wide mask and input card)

AC power cord (2.5 m) x1

Power cord holder x 1 (case and cover)

Screws x 2 (Power cord holder)

Wide Mask x 1

Screws x 4 (Wide Mask)

NOTE : Design and specifications subject to change without notice.

1-2 (No. 52152)

SECTION 1

PRECAUTION

1.1 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. 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 ( 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) Use isolation transformer when hot chassis.

The chassis and any sub-chassis contained in some products are connected to one side of the AC power line. An isolation transformer of adequate capacity should be inserted between the product and the AC power supply point while performing any service on some products when the HOT chassis is exposed.

Don't short between the LIVE side ground and

(5)

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 : ( GND, the ISOLATED(NEUTRAL) : (

) side GND. Don't short between the LIVE side GND

: ( and ISOLATED(NEUTRAL) side GND or EARTH side GND and never measure the LIVE side GND and ISOLATED(NEUTRAL) side GND or EARTH side GND at the same time with a measuring apparatus (oscilloscope etc.). If above note will not be kept, a fuse or any parts will be broken.

(6) 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).

(7) 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.

(8) 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.

) on the parts list in Service

) side

) side GND and EARTH

(9) 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.

(10)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.

a) 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 1100V 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.

b) 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 1000Ω/V,

GOOD EARTH GROUND

0.15 µF AC-TYPE

1500Ω 10W

OR MORE SENSITIVITY)

PLACE THIS PROBE ON EACH EXPOSED METAL PART

(11)High voltage hold down circuit check.

After repair of the high voltage hold down circuit, this circuit shall be checked to operate correctly. See “X-RAY PROTECTOR ADJUSTMENT/CHECK” on page 1-44.

This mark shows a fast operating fuse, the letters indicated below show the rating.

A V

POWER CORD REPLACEMENT WARNING

Connecting the white line side of power cord to “WHT” character side.

PWB

White line side

WHT

(No. 52152) 1-3

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 HOW TO IDENTIFT MODEL

Please check the destination and the version of your model by RATING LABEL.

DT-V1710CG/U [FOR NORTH AMERICA MODEL]

DT-V1710CG/E [FOR EUROPE AND ASIA MODELS]

INDICATED “DT-V1710CGU”

1-4 (No. 52152)

INDICATED “DT-V1710CGE”

SECTION 3

DISASSEMBLY

3.1 DISASSEMBLY PROCEDURE

CAUTION :

• Some parts are active even after the main power switch is set to OFF.

• Be sure to unplug the power cord from the power outlet before proceeding with disassembly or assembly of the unit.

3.1.1 REMOVING THE SLOT PANEL, TOP COVER AND

REAR PANEL

(1) Unplug the power cord, remove the six screws [1] and

remove the SLOT PANEL.

(2) Remove the fourteen screws [2] and then the two screws

[3]. Open up the lower part of the TOP COVER slightly. Then

(3)

pull the TOP COVER toward the rear and lift to remove it.

(4) Also remove the REAR PANEL.

3.1.2 REMOVING THE BOTTOM COVER

• Remove the SLOT PANEL, TOP COVER and REAR PANEL. (1) Place the unit so that the side with the SLOT CHASSIS

comes at the bottom.

(2) Remove the six screws [4] and pull the BOTTOM COVER

toward the rear to remove it.

3.1.3 REMOVING THE SIGNAL PW BOARD, MOTHER PW

BOARD AND REMOTE PW BOARD

• Remove the SLOT PANEL, TOP COVER and REAR PANEL. (1) Disconnect the wire clamps and connectors as required. (2) Remove the four screws [5] and unplug the SIGNAL PWB

from the connector on the MOTHER PWB.

(3) Remove the two screws [6] and then remove the Joint

Bracket.

(4) Remove the two screws [7] and then remove the SLOT

CHASSIS by lifting it while pushing the claw [C] on the CHASSIS BASE.

(5) Remove the nine screws [8] and remove the MOTHER

PWB.

(6) Remove the screw [9], the four screwnuts [10] and the

two screwnuts [11], then remove the REMOTE PWB.

3.1.4 REMOVING THE CHASSIS BASE, SPEAKER AND

S. CORRECTION PW BOARD

• Remove the SLOT PANEL, TOP COVER, REAR PANEL and SLOT CHASSIS. (1) Disconnect the wire clamps and connectors as required. (2) Remove the two screws [12] and pull the CHASSIS BASE

toward the front to remove it.

(3) While disengaging the claw [D] on the CHASSIS BASE

that is engaged with the rear of the SPEAKER, lift the SPEAKER to remove it (see Fig. 2).

(4) Remove the three screws [13] and then remove the PB

BRACKET.

(5) Unplug the S. CORRECTION PWB from the connector

on the MAIN PWB.

3.1.5 REMOVING THE CRT AND LED PW BOARD

• Remove the SLOT PANEL, TOP COVER, REAR PANEL, BOTTOM COVER, SLOT CHASSIS and CHASSIS BASE. (1) Remove the four screws [14] and remove the SIDE

BRACKETS. (2) Also remove the CRT. (3) Remove the two screws [15] and remove the LED PWB.

3.1.6 REMOVING THE FRONT CONTROL PW BOARD AND FRONT VR PW BOARD

(1) Remove the five screws [16] and remove the CONTROL

BASE.

(2) Disconnect the connectors as required. (3) Remove the three screws [17] and remove the FRONT

CONTROL PWB.

(4) While slightly lifting the two claws [E] on the CONTROL

BASE, remove the FRONT VR PWB.

3.1.7 DIAGNOSING THE MAIN PW BOARD

• Remove the SLOT PANEL, TOP COVER and REAR PANEL.

(1) Place the unit so that the side with the SLOT CHASSIS

comes at the bottom, and remove the BOTTOM COVER.

(2) Now the diagnosis of the MAIN PWB is possible.

CAUTION :

• The unit is unstable when it is placed on its side so please

be careful that it does not topple over during work. Before turning the power on, ensure that the connectors in

•

cluding the CRT grounding are connected properly.

CAUTION

Before turning the power on, ensure that the spiral wires (Yellow/Green) and the CRT grounding wires are connected properly.

CRT grounding wire

Black

White

Black

Spiral wires

(Yollow/Green)

View from the rear of the AC inlet

3.1.8 NOTE CONCERNING WIRE CLAMPING

• Be sure to reconnect the wire clamps that have been

disconnected during the above work.

White

(No. 52152) 1-5

TOP COVER

LED PWB

CRT SOCKET PWB

SIDE

BRACKET

CONTROL BASE

CRT

SIDE BRACKET

MOTHER PWB

JOINT BRACKET

HV CONTROL MODULE PWB

SPEAKER

MAIN PWB

SLOT CHASSIS

SUB DEF MODULE PWB

SIGNAL PWB

REMOTE PWB

PB BRACKET

S. CORRECTION PWB

CHASSIS BASE

REAR PANEL

FRONT VR PWB

REMOVING THE SPEAKER

Speaker back side

FRONT CONTROL PWB

Fig. 2

1-6 (No. 52152)

BOTTOM COVER

SLOT PANEL

Fig. 1

3.2 DEMAGNETIZATION PROCEDURE

3.2.1 CAUTION

(1) Use a rod-type demagnetization coil.

NOTE:

Never use a ring-shaped demagnetization coil.

(2) Keep the demagnetization coil at a distance of more than 1.5 cm from the CRT screen and the main unit during use. (3) When demagnetizing the CRT screen, hold the demagnetization coil perpendicularly to the CRT screen.

(4) When demagnetizing the outer cabinet of the unit, use the demagnetization coil in the orientation as shown below.

(No. 52152) 1-7

3.2.2 DEMAGNETIZING THE CRT SCREEN

(1) While holding the power button of the demagnetization coil, move it to approach the CRT screen area that has color irregularities.

(Keep the demagnetization coil at a distance of more than 1.5 cm from the screen.)

(2) From the area with the colour irregularities, move the demagnetization coil as if drawing a spiral toward the center of the CRT

screen. (3) Move the demagnetization coil slowly away from the center of the CRT screen. (4) When the demagnetization coil comes to about 1 meter from the CRT screen, release the demagnetization coil power button. (5) If the color irregularities are still observed, repeat the above steps once more.

1 m

3.2.3 DEMAGNETIZING THE OUTER CABINET OF THE UNIT

(1) While holding the power button of the demagnetization coil, move it to approach the outer cabinet of the unit.

(Keep the demagnetization coil at a distance of more than 1.5 cm from the cabinet.) (2) Keep the demagnetization coil in the same orientation, and move it around the cabinet as if drawing a circle around the side

and top panels of the unit. (3) Move the demagnetization coil slowly away from the outer cabinet of the unit. (4) When the demagnetization coil comes to about 1 meter from the unit, release the power button of the demagnetization coil.

1 m

1-8 (No. 52152)

3.3 MEMORY IC REPLACEMENT

3.3.1 MEMORY IC

The unit incorporates a nonvolatile Memory IC, which stores data on the video and deflection systems, etc. When it is replaced with an IC without the data stored in it, the set may malfunction or the video may become abnormal when the unit is turned on. When replacing the Memory IC, be sure to use an IC in which the data (initial values) has already been written.

3.3.2 MEMORY IC REPLACEMENT PRECDURE

1. Turn the unit off and unplug the power cord from the power outlet.

2. Replace the Memory IC with a new Memory IC storing the initial setting value data.

3. Plug the power cord into the power outlet and turn the unit on.

4. Check the SETUP MENU and set its items as required. (1) While holding down the

key, press the VOL - ( )

key.

(2) The SETUP MENU appears (Fig. 1).

SETUP MENU

FUNCTION SETTING PICTURE SUB ADJ. COLOR TEMP./BAL. SIZE/POSI. ADJ. DISTORTION ADJ. STATUS DISPLAY CONTROL LOCK : OFF all reset

EXIT:

ENTER:

SELECT:

(3) Check the items in the SETUP MENU by comparing

them with the data in the table on page 1-10.

Fig. 1

If any item is set differently, set it as required.

5. Check the MAIN MENU and set its items as required. Press the [MENU] key to display the MAIN MENU (Fig.

2). Check the items in the MAIN MENU by comparing them with the data in the table on page 1-11. If any item is set differently, set it as required.

6. Adjust the items that can be adjusted on the front panel.

MAIN MENU

APERTURE CONTROL SLOT CONDITION sub menu POSITION : LOWER AREA MARKER COLOR MATRIX

(Some items cannot be adjusted unless the required signal is input.)

7. Check that the initial values of the items in the SERVICE

EXIT:

ENTER:

SELECT:

MENU (Fig. 3). If any item is set differently, set it as required.

Fig. 2

For the setting method and the initial values, see the corresponding pages for “SERVICE ADJUSTMENTS” in this manual.

SIGNAL BLOCK WHITE BALANCE BLOCK DEFLECTION BLOCK CPU BLOCK DIAGNOSIS UPC1884 ADJ. TA1276 ADJ. HOUR METER

EXIT:

ENTER:

SELECT:

Fig. 3

(No. 52152) 1-9

3.3.3 FACTORY SETTING VALUE

! INITIAL SETTING VALUE TABLE [SET-UP MENU]

Setting Item Data / Variable range Initial setting value Remarks

FUNCTION SETTING

COLOR SYSTEM AUTO / NTSC / PAL AUTO Apply the NTSC/PAL signal

AUTO INPUT ON/OFF OFF Apply the HD SDI/SDI signal

SYNC SELECT INT. / EXT. INT.

RUSH DELAY TIME STD. / SLOW STD.

TALLY SELECT GREEN / RED GREEN

REMOTE SYSTEM MAKE / TRIGGER MAKE

E.AUDIO GROUP 1G / 2G / 1-2G 1G

HOUR METER X 100h 000 – 655 000

PICTURE SUB ADJ.

CONTRAST -20 – +20 00

BRIGHT -20 – +20 00

CHROMA -20 – +20 00

PHASE -20 – +20 00

NTSC SETUP 00 / 75 00

COMPO. LEVEL SMPTE / B00 / B75 SMPTE Apply the Component signal

COLOR TEMP. / BAL.

COLOR TEMP. LOW / HIGH LOW

BLUE DRIVE MIN – MAX (127 steps) 000

RED DRIVE MIN – MAX (127 steps) 000

GREEN CUTOFF MIN – MAX (205 steps) 000

BLUE CUTOFF MIN – MAX (205 steps) 000

RED CUTOFF MIN – MAX (205 steps) 000

SIZE / POSI. ADJ.

H.SIZE -20 – +20 00

Reduced to 00 – +20 during the under-scan mode.

H.POSITION -20 – +20 00

V.SIZE -20 – +20 00

V.POSITION -20 – +20 00

ZOOM H. SIZE -20 – 00 00

ZOOM V. SIZE -20 – +20 00

DISTORTION ADJ.

PINCUSHION -20 – +20 00

PIN.BALANCE -20 – +20 00

PARALLELOGRAM -20 – +20 00

TRAPEZOID -20 – +20 00

ROTATION -31 – +31 00

STATUS DISPLAY

STATUS DISPLAY ON / OFF ON

LEVEL METER ch

BAR TYPE

OFF/1:2/12:34/31:24/123:456/1-8

3 COLORS / WHITE-1 / WHITE-2

OFF

3 COLORS

REFERENCE LEVEL -20dB / -18dB -20dB

OVER LEVEL -8dB / -6dB / -4dB / -2dB -8dB

BAR BRIGHTNESS HIGH / LOW HIGH

CONTROL LOCK ON / OFF OFF

1-10 (No. 52152)

! INITIAL SETTING VALUE TABLE [MAIN MENU]

Setting Item Data / Variable range Initial setting value

APERTURE CONTROL

LEVEL 00 – 10 00

CONTROL FREQ. HIGH / LOW / OFF HIGH

SLOT CONDITION Type of boards installed in the rear panel slots.

INPUT A – F SLOT1 : INPUT A, B

SLOT2 : INPUT C, D

SLOT3 : INPUT E, F

sub menu POSITION LOWER / UPPER LOWER

AREA MARKER

MARKER SELECT OFF / LINE /S. HALF / HALF+L / S. BLK / BLK. +L OFF

ZOOM OFF / ON OFF

ASPECT SELECT 4 : 3 / 13 : 9 / 14 : 9 4 : 3

SAFEY AREA OFF / 80% / 88% / 90% OFF

R-MARKER SELECT OFF / LINE / S. HALF / HALF+L / S. BLK / BLK. +L OFF

R-ZOOM OFF / ON OFF

R-ASPECT SELECT 4 : 3 / 13 : 9 / 14 : 9 4 : 3

R-SAFETY AREA OFF / 80% / 88% / 90% 0FF

COLOR MATRIX SELECT : MANUAL / ITU601 or ITU709 NORMAL

[Example when MANUAL is set]

R-Y PHASE : 90/92/94/112 90

R/B GAIN : 0.56/0.68/0.79/0.86 0.86

G-Y PHASE : 236/240/244/253 244

G/B GAIN : 0.30/0.34/0.40/0.45 0.30

! INITIAL SETTING VALUE TABLE [FRONT PANEL CONTROL]

Setting Item Data / Variable range Initial setting value

POWER ON / OFF OFF

INPUT SELECT INPUT A – F INPUT A

COLOR OFF AREA MARKER PULSE CROSS ASPECT ON / OFF OFF UNDER SCAN SCREENS CHECK DEGAUSS

VOLUME 00 – 50 10

CONTRAST BRIGHT POTENTIOMETER Center click position CHROMA PHASE

(No. 52152) 1-11

3.4 REPLACEMENT OF CHIP COMPONENT

3.4.1 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.

3.4.2 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.

3.4.3 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.

SOLDER

(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.

(4) Then solder leads B and C.

1-12 (No. 52152)

SECTION 4

ADJUSTMENT

4.1 ADJUSTMENT PRECUTION

(1) Make sure that connection is correctly mode AC to AC power souce. (2) Warm run the unit and measuring tools sufficiently (at least 30 minutes). (3) Perform all adjustments based on the initial values. There is no problem if the result of an adjustment performed by observing

the screen is different from the initial value.

(4) Never attempt to turn on potentiometers or other controls that are not explicitly mentioned in the adjustment procedures.

NOTE:

When using the IF-C01PNG (NTSC/PAL Video Input Card) in an adjustment, be sure to check the output waveforms from the video input card in advance.

4.2 SETTINGS REQUIRED FOR ADJUSTMENTS

For the functions other than those that should be set before each adjustment, reset them to the initial values according to the table on page 1-10 before proceeding to the adjustment. Correct adjustments will not be possible unless the values of the functions are reset to the initial values.

4.3 SETTING ITEMS

Begin adjustments with the primary items and then proceed to the secondary items, (1) to (3).

!PRIMARY ADJUSTMENT ITEMS

• Screen voltage coarse adjustment

• High-voltage coarse adjustment

• X-ray protector adjustment/check

• High-voltage adjustment

• Focus adjustment

• Image rotation adjustment

• Convergence adjustment

!SECONDARY ADJUSTMENT ITEMS (1)

• Contrast adjustments

• Chroma/Phase adjustments

!SECONDARY ADJUSTMENT ITEMS (2)

• Deflection system adjustments (Overscan, underscan, aspect mode)

!SECONDARY ADJUSTMENT ITEMS (3)

• White balance adjustments

• Brightness adjustments

(Overscan, underscan, aspect mode)

(No. 52152) 1-13

4.4 MEASURING INSTRUMENTS AND FIXTURES

(1) DC voltmeter ( or digital voltmeter) (2) Oscilloscope (3) Color analyzer (colour temperature meter) (4) High-voltage voltmeter (5) Signal generator (Should be compatible with the following signal specifications.) (6) Scale (made of non-metallic material) (7) IF-C01PNG (NTSC/PAL Video Input Card) (8) IF-C01COMG (Component/RGB Input Card)

Fromats of Signal Used in Adjustments

• DTV format component signals (480/60i, 480/60p, 576/50i, 576/50p, 720/50p, 720/60p, 1080/24psF, 1080/50i, 1080/60i)

• NTSC signals (Composite, Y/C)

• PAL signals (Composite, Y/C)

• Color bar signal

• Size adjustment signal

• All white signal

• All black signal

• Mono-scope signal

• Gray scale signal

• 10-step gray scale signal

Types of Signals Used in Adjustments

• Crosshatch signal

• Crosshatch signal with circle pattern

4.5 FOCUS AND SCREEN ADJUSTMENT HOLES

The rear panel has the adjustment holes for use in adjusting the focusing and screen.

CAUTION :

• Be sure to use screwdrivers made of non-metallic materials for the following adjustments. If a metallic screwdriver is used, short-circuiting may damage parts of the unit, including the high-voltage parts.

1-14 (No. 52152)

4.6 TIMING CHART OF SIGNALS REQUIRED FOR ADJUSTMENTS

Generate the signals required for adjustments with a programmable signal generator by referring to the following figure.

EQfpEQ

Display area

Front porch

1080/24psF

1080/50i 1080/60i

Signal

Resolution(Horizontal)

Sync

Back porch

Total period

NTSC(14.3)

PAL 480/60i 576/50i 480/60p 576/50p 720/50p 720/60p

768 624 720 720 720 720 1280 1280 1920 1920 1920

Resolution(Vertical) 243 287 244 287 483 576 720 720 540 540 540

Horizontal frequency(kHz)

Vertical frequency(Hz)

15.73 15.625 15.73 15.625 31.469 31.25 37.50 44.955 27 28.125 33.75

29.97i 25i 30i 25i 60p 50p 50p 60p 24psF(48i) 50i 30i

CS & V RGB RGB RGB RGB RGB RGB RGB RGB RGB RGB

CS -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

HS -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

VS -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

Dot clock(MHz) 14.318 12 13.5 13.5 27 12 74.25 74.25 74.25 74.25 74.25

H period 910 768 858 864 858 864 1980 1650 2750 2640 2200

H sync 68 56 63 63 63 63 40 40 44/44 44/44 44/44

H back p. 58 70 59 68 59 69 260 260 144/188 144/188 144/188

H disp 768 624 720 720 720 720 1280 1280 1920 1920 1920

V period 263 312 263 312 525 625 750 750 562 562 562

V sync 33336555555

V back p. 14 19 13 19 30 39 25 20 15 15 15

V disp 243 287 243 287 483 576 750 720 540 540 540

Equivalent pulse(fp/bp)

3H/3H 3H/3H 3H/3H 3H/3H 0H/0H 0H/0H 0H/0H 0H/0H 0H/0H 0H/0H 0H/0H

(No. 52152) 1-15

4.7 ADJUSTMENT LOCATIONS

S. CORRECTION PWB (SOLDER SIDE) CRT SOCKET PWB (SOLDER SIDE)

CN0RD CN00R

TOP

FRONT

CN010

MAIN PWB

VR505 COVN_V

VR504 CONV_H

CN011

VR501 X-RAY

VR502 H.VOLTAGE

TP-G TP-XR

FRONT

TP-47R

TP-47G

S. CORRECTION PWB

HV CONTROL MODULE PWB

TP-47B

TP-GND

CN011

1-16 (No. 52152)

CN005

SUB DEF MODULE PWB

F901

CN001

CN002

CN003

CN004

CN010

UPPER : FOCUS-1 MIDDLE : FOCUS-2 LOWER : SCREEN

4.8 BASIC OPERATIONS OF SERVICE MENU

4.8.1 SERVICE MENU ITEMS

The service menu is roughly classified according to setup and adjustments, and is divided into the following items. Do not alter the values of unnecessary items.

SIGNAL BLOCK Adjustments of the contrast, brightness, chroma and phase. WHITE BALANCE BLOCK Adjustments of the white balance. DEFLECTION BLOCK Adjustments of the deflection circuitry. CPU BLOCK Setting of the entire system by means of the control values of the microcomputer. (This block is

usually not adjusted in servicing. Do not touch it except for adjustment items CC41 and CE05 to

CE24.) DIAGNOSIS Display of the results of self diagnosis. UPC1884 ADJ. Display of the status of UPC1884 which is the DEF processor IC. (Do not adjust this item because

it is not required for servicing.) TA1276 ADJ. Display of the status of TA1276 which is the RGB processor IC. (Do not adjust this item because it

is not required for servicing.) HOUR METER Display of the hour meter count. UPDATE CPU PROGRAM Display of the software version. E2PROM VERSION Display of the E2PROM version. (Do not adjust this item because it is not required for servicing.) FPGA VERSION Display of the HDSDI FPGA version. (Do not adjust this item because it is not required for servicing.) INITIALIZE EEPROM Initialization of the user-setting menu. (Do not adjust this item because it is not required for servicing.)

4.8.2 BASIC OPERATIONS IN THE SERVICE MENU

1. Entering the Service Menu

Use the front panel keys to display the Service Menu (Fig. 1).

–

VOLUME

Fig. 1 FRONT PANEL KEYS

(1) While holding the

” mark appears at the center of the screen (Fig. 2).

The “

(2)Before the “

appears), hold the

key, press the [MENU] key.

” mark disappears (within 5 seconds after it

key and press the VOL- ( ) key.

Warning message “Please don't touch!” appears on the screen (Fig. 3).

(3) Before the warning message disappears (within 5 seconds

after it appears), press the VOL+ ( ) key.

The service menu items appears on the display (Fig. 4).

Fig. 2 WRNING MARK

Please don't touch!

Fig. 3 WARNING MESSAGE DISPLAY

SIGNAL BLOCK WHITE BALANCE BLOCK DEFLECTION BLOCK CPU BLOCK DIAGNOSIS UPC1884 ADJ. TA1276 ADJ. HOUR METER

EXIT:

ENTER:

SELECT:

Fig. 4 SERVICE MENU

(No. 52152) 1-17

2. Setting the Service Menu items

(1) With the Service Menu displayed, press the

select the item to be adjusted, then press the VOL+

) key to enter the submenu for the item.

(

key to

SIGNAL BLOCK

SA : VIDEO -NTSC SB : Y/C -NTSC SC : VIDEO -PAL SD : YC -PAL SE : COMP. -480/60i SF : COMP. -576/50i SG : COMP. -480/60p SH : COMP. -576/50p

EXIT:

ENTER:

SUBMENU

SELECT:

(2) Press the

press the VOL+ (

key to select the item to be adjusted, then

) key to enter the item.

(3) Set the adjustment item by varying it with the VOL- (

and VOL+ ( ) keys.

3. Exiting from the Service Menu

(1) After completing the adjustment of an item, press the

[MENU] key to return to the submenu.

XXXXX X XXXXX XXXX XXXX XXXX XXX

S (A01)

ADJUSTMENT ITEM DISPLAY

)

XXXXX X XXXXX XXXX XXXX XXXX XXX

S (A01)

ADJUSTMENT ITEM

ADJUSTMENT VALUE

(2) Press the [MENU] key again to return to the Service

Menu.

(3) Press the [MENU] key again to return to the normal

screen.

1-18 (No. 52152)

4.8.3 SERVICE MENU FLOW CHART

[SERVICE MENU]

SIGNAL BLOCK WHITE BALANCE BLOCK DEFLECTION BLOCK CPU BLOCK DIAGNOSIS UPC1884 ADJ. TA1276 ADJ. HOUR METER

ENTER:

EXIT:

UPDATE CPU PROGRAM E2PROM VERSION INITIALIZE EEPROM

EXIT:

SELECT:

[SIGNAL BLOCK 1/3]

SIGNAL BLOCK

SA : VIDEO -NTSC SB : Y/C -NTSC SC : VIDEO -PAL SD : YC -PAL SE : COMP. -480/60i SF : COMP. -576/50i SG : COMP. -480/60p SH : COMP. -576/50p

EXIT:

ENTER:

SELECT:

[SIGNAL BLOCK 2/3]

SIGNAL BLOCK

SI : COMP. -1080/60i SJ : COMP. -1035/60i SK : COMP. -1080/50i SL : COMP. -1080/24psF SM : COMP. -720/60p SN : COMP. -720/50p SO : RGB SP : SCAN -UNDER

EXIT:

ENTER:

SELECT:

(SA : VIDEO -NTSC) (SI : COMP. -1080/60i)

XXXXX X XXXXX XXXX XXXX XXXX XXX

S [A01]

XXXXX X XXXXX XXXX XXXX XXXX XXX

S [I01]

[WHITE BALANCE BLOCK 1/3] [WHITE BALANCE BLOCK 2/3]

WHITE BALANCE BLOCK

WA : NTSC HIGH WB : NTSC LOW WC : PAL HIGH WD : PAL LOW WE : COMP.-480(576)i HIGH WF : COMP.-480(576)i LOW WG : COMP.-480(576)p HIGH WH : COMP.-480(576)p LOW

EXIT:

ENTER:

SELECT:

WHITE BALANCE BLOCK

WI : COMP.-1080i HIGH WJ : COMP.-1080i LOW WK : COMP.-1035/60i HIGH WL : COMP.-1035/60i LOW WM : COMP.-1080/50i HIGH WN : COMP.-1080/50i LOW WO : COMP.-1080/24psF HIGH WP : COMP.-1080/24psF LOW

ENTER:

SELECT:

EXIT:

[SIGNAL BLOCK 3/3]

SIGNAL BLOCK

SQ : ASPECT SR : COMMEN SS : SCAN -ZOOM ST : SUB DATA (HD/SD)

EXIT:

ENTER:

SELECT:

(SQ : ASPECT)

XXXXX X XXXXX XXXX XXXX XXXX XXX

S [Q01]

[WHITE BALANCE BLOCK 3/3]

WHITE BALANCE BLOCK

WQ : COMP.-720/60p HIGH WR : COMP.-720/60p LOW WS : COMP.-720/50p HIGH WT : COMP.-720/50p LOW WU : RGB HIGH WV : RGB LOW WW : COMMON HIGH WX : COMMON LOW

EXIT:

ENTER:

SELECT:

(WA : NTSC HIGH) (WI : COMP.-1080i HIGH)

XXXXX X XXXXX XXXX XXXX XXXX XXX

W [A01]

XXXXX X XXXXX XXXX XXXX XXXX XXX

W [I01]

[DEFLECTION BLOCK 1/4] [DEFLECTION BLOCK 2/4] [DEFLECTION BLOCK 3/4]

DEFLECTION BLOCK

DA : NTSC DB : NTSC-UNDER DC : PAL DD : PAL-UNDER DE : 480/60i DF : 480/60i-UNDER DG : 576/50i DH : 576/50i-UNDER

ENTER:

EXIT:

SELECT:

DEFLECTION BLOCK

DI : 480/60p DJ : 480/60p -UNDER DK : 576/50p DL : 576/50p -UNDER DM : 1080/60i DN : 1080/60i-UNDER DO : 1035/60i DP : 1035/60i-UNDER

ENTER:

EXIT:

SELECT:

DEFLECTION BLOCK

DQ : 1080/50i DR : 1080/50i-UNDER DS : 1080/24p DT : 1080/24p-UNDER DU : 720/60p DV : 720/60p-UNDER DW : 720/50p DX : 720/50p-UNDER

ENTER:

EXIT:

SELECT:

(DA : NTSC) (DI : 480/60p) (DQ : 1080/50i)

XXXXX X XXXXX XXXX XXXX XXXX XXX

(WI : COMP.-720/60p HIGH)

XXXXX X XXXXX XXXX XXXX XXXX XXX

W [Q01]

[DEFLECTION BLOCK 4/4]

DEFLECTION BLOCK

DY : ASPECT DZ : V.LIN/FOCUS D1 : ROTATION/PURITY D2 : COMMON D3 : ZOOM

ENTER:

EXIT:

SELECT:

(DY : ASPECT)

XXXXX X XXXXX XXXX XXXX XXXX XXX

D [A01]

D [I01]

D [Q01]

D [Y01]

(No. 52152) 1-19

[SERVICE MENU]

SIGNAL BLOCK WHITE BALANCE BLOCK DEFLECTION BLOCK CPU BLOCK DIAGNOSIS UPC1884 ADJ. TA1276 ADJ. HOUR METER

ENTER:

EXIT:

SELECT:

[CPU BLOCK]

CPU BLOCK

CA : MENU CB : SIGNAL CC : SETTING CD : DEFLECTION CE : OSD etc

EXIT:

ENTER:

[CA : MENU]

SELECT:

XXXXX X XXXXX XXXX XXXX XXXX XXX

C [A01]

UPDATE CPU PROGRAM E2PROM VERSION FPGA VERSION INITIALIZE EEPROM

ENTER:

SELECT:

EXIT:

[E2PROM VERSION]

EEPROM VERSION

EEPROM :

[FPGA VERSION]

FPGA VERSION

SET FPGA : SLOT1 : SLOT2 : SLOT3 :

[DIAGNOSIS]

DIAGNOSIS MENU

CLEAR I2C-0 SIGNAL BUS I2C-1 SIGNAL BUS I2C ROM BUS X-RAY OCP VOFF

EXIT:

ENTER:

[UPC1884 ADJ. ]

XXXXX X XXXXX XXXX XXXX XXXX XXX

U [P01]

[TA1276 ADJ. ]

XXXXX X XXXXX XXXX XXXX XXXX XXX

T [A01]

[INITIALIZE EEPROM]

EEPROM INITIALIZE

Are you sure? “YES” then “NO” then

+ key.

key.

Do not adjust these items because they are not rquired for servicing.

1-20 (No. 52152)

[HOUR METER]

HOUR METER

ENTER:

+ key.

key.

RESET HOUR METER :

EXIT:

[

UPDATE CPU PROGRAM

Are you sure? “Yes” then “No” then

Necessity! : PC, cable & terminal software CURRENT Ver.

EXIT:

]

4.9 INITIAL SETTING VALUE OF SERVICE MENU

Note that the following values other than the fixed values should simply be used as references during adjustments. Their correct values may be variable depending on individual units.

[SIGNAL BLOCK]

No. Setting item Variable range

Initial setting value

SA [VIDEO NTSC]

S[A01] CONTRAST -064 ~ +063 +018

S[A02] BRIGHT HIGH -128 ~ +127 000

S[A03] CHROMA -064 ~ +063 000

S[A04] PHASE -064 ~ +063 000

S[A05] APERTURE -064 ~ +063 000

S[A06] BRIGHT LOW -128 ~ +127 000

S[A07] Y DL 000/001 000 (Fixed value)

S[A08] R-Y PHASE 000 ~ 003 000 (Fixed value)

S[A09] R/B GAIN 000 ~ 003 002 (Fixed value)

S[A10] G-Y PHASE 000 ~ 003 001 (Fixed value)

S[A11] G/B GAIN 000 ~ 003 003 (Fixed value)

SB [Y/C NTSC]

S[B01] CONTRAST -064 ~ +063 +018

S[B02] BRIGHT HIGH -128 ~ +127 000

S[B03] CHROMA -064 ~ +063 000

S[B04] PHASE -064 ~ +063 000

S[B05] APERTURE -064 ~ +063 000

S[B06] BRIGHT LOW -128 ~ +127 000

S[B07] Y DL 000/001 000 (Fixed value)

S[B08] R-Y PHASE 000 ~ 003 000 (Fixed value)

S[B09] R/B GAIN 000 ~ 003 002 (Fixed value)

S[B10] G-Y PHASE 000 ~ 003 001 (Fixed value)

S[B11] G/B GAIN 000 ~ 003 003 (Fixed value)

SC [VIDEO PAL]

S[C01] CONTRAST -064 ~ +063 +018

S[C02] BRIGHT HIGH -128 ~ +127 000

S[C03] CHROMA -064 ~ +063 000

S[C04] PHASE -064 ~ +063 000

S[C05] APERTURE -064 ~ +063 000

S[C06] BRIGHT LOW -128 ~ +127 000

S[C07] Y DL 000/001 000 (Fixed value)

S[C08] R-Y PHASE 000 ~ 003 000 (Fixed value)

S[C09] R/B GAIN 000 ~ 003 002 (Fixed value)

S[C10] G-Y PHASE 000 ~ 003 002 (Fixed value)

S[C11] G/B GAIN 000 ~ 003 003 (Fixed value)

SD [YC PAL]

S[D01] CONTRAST -064 ~ +063 +018

S[D02] BRIGHT HIGH -128 ~ +127 000

S[D03] CHROMA -064 ~ +063 000

(No. 52152) 1-21

No.

Setting item Variable range

Initial setting value

S[D04] PHASE -064 ~ +063 000

S[D05] APERTURE -064 ~ +063 000

S[D06] BRIGHT LOW -128 ~ +127 000

S[D07] Y DL 000/001 000 (Fixed value)

S[D08] R-Y PHASE 000 ~ 003 000 (Fixed value)

S[D09] R/B GAIN 000 ~ 003 002 (Fixed value)

S[D10] G-Y PHASE 000 ~ 003 002 (Fixed value)

S[D11] G/B GAIN 000 ~ 003 003 (Fixed value)

SE [COMP. 480/60i]

S[E01] CONTRAST -064 ~ +063 +018

S[E02] BRIGHT HIGH -128 ~ +127 000

S[E03] CHROMA -064 ~ +063 000

S[E04] PHASE -064 ~ +063 000

S[E05] APERTURE -064 ~ +063 000

S[E06] BRIGHT LOW -128 ~ +127 000

S[E07] Y DL 000/001 000 (Fixed value)

S[E08] R-Y PHASE 000 ~ 003 000 (Fixed value)

S[E09] R/B GAIN 000 ~ 003 002 (Fixed value)

S[E10] G-Y PHASE 000 ~ 003 002 (Fixed value)

S[E11] G/B GAIN 000 ~ 003 003 (Fixed value)

SF [COMP. 576/50i]

S[F01] CONTRAST -064 ~ +063 +018

S[F02] BRIGHT HIGH -128 ~ +127 000

S[F03] CHROMA -064 ~ +063 000

S[F04] PHASE -064 ~ +063 000

S[F05] APERTURE -064 ~ +063 000

S[F06] BRIGHT LOW -128 ~ +127 000

S[F07] Y DL 000/001 000 (Fixed value)

S[F08] R-Y PHASE 000 ~ 003 000 (Fixed value)

S[F09] R/B GAIN 000 ~ 003 002 (Fixed value)

S[F10] G-Y PHASE 000 ~ 003 002 (Fixed value)

S[F11] G/B GAIN 000 ~ 003 003 (Fixed value)

SG [COMP. 480/60p]

S[G01] CONTRAST -064 ~ +063 +018

S[G02] BRIGHT HIGH -128 ~ +127 000

S[G03] CHROMA -064 ~ +063 000

S[G04] PHASE -064 ~ +063 000

S[G05] APERTURE -064 ~ +063 000

S[G06] BRIGHT LOW -128 ~ +127 000

S[G07] Y DL 000/001 000 (Fixed value)

S[G08] R-Y PHASE 000 ~ 003 000 (Fixed value)

S[G09] R/B GAIN 000 ~ 003 002 (Fixed value)

S[G10] G-Y PHASE 000 ~ 003 002 (Fixed value)

S[G11] G/B GAIN 000 ~ 003 003 (Fixed value)

1-22 (No. 52152)

No.

Setting item Variable range

Initial setting value

SH [COMP. 576/50p]

S[H01] CONTRAST -064 ~ +063 +018

S[H02] BRIGHT HIGH -128 ~ +127 000

S[H03] CHROMA -064 ~ +063 000

S[H04] PHASE -064 ~ +063 000

S[H05] APERTURE -064 ~ +063 000

S[H06] BRIGHT LOW -128 ~ +127 000

S[H07] Y DL 000/001 000 (Fixed value)

S[H08] R-Y PHASE 000 ~ 003 000 (Fixed value)

S[H09] R/B GAIN 000 ~ 003 002 (Fixed value)

S[H10] G-Y PHASE 000 ~ 003 002 (Fixed value)

S[H11] G/B GAIN 000 ~ 003 003 (Fixed value)

SI [COMP. 1080/60i]

S[I01] CONTRAST -064 ~ +063 000

S[I02] BRIGHT HIGH -128 ~ +127 000

S[I03] CHROMA -064 ~ +063 000

S[I04] PHASE -064 ~ +063 000

S[I05] APERTURE -064 ~ +063 000

S[I06] BRIGHT LOW -128 ~ +127 000

S[I07] Y DL 000/001 000 (Fixed value)

S[I08] R-Y PHASE 000 ~ 003 000 (Fixed value)

S[I09] R/B GAIN 000 ~ 003 003 (Fixed value)

S[I10] G-Y PHASE 000 ~ 003 002 (Fixed value)

S[I11] G/B GAIN 000 ~ 003 000 (Fixed value)

SJ [COMP. 1035/60i]

S[J01] CONTRAST -064 ~ +063 000

S[J02] BRIGHT HIGH -128 ~ +127 000

S[J03] CHROMA -064 ~ +063 000

S[J04] PHASE -064 ~ +063 000

S[J05] APERTURE -064 ~ +063 000

S[J06] BRIGHT LOW -128 ~ +127 000

S[J07] Y DL 000/001 000 (Fixed value)

S[J08] R-Y PHASE 000 ~ 003 000 (Fixed value)

S[J09] R/B GAIN 000 ~ 003 003 (Fixed value)

S[J10] G-Y PHASE 000 ~ 003 002 (Fixed value)

S[J11] G/B GAIN 000 ~ 003 000 (Fixed value)

SK [COMP. 1080/50i]

S[K01] CONTRAST -064 ~ +063 +006

S[K02] BRIGHT HIGH -128 ~ +127 000

S[K03] CHROMA -064 ~ +063 000

S[K04] PHASE -064 ~ +063 000

S[K05] APERTURE -064 ~ +063 000

S[K06] BRIGHT LOW -128 ~ +127 000

(No. 52152) 1-23

+ 53 hidden pages

JVC DT-V1710CG, DT-V1710CGE, DT-V1710CGU Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual