JVC LM-15G Service Manual

Page 1

SERVICE MANUAL

LCD VIDEO MONITOR

LM-15G LM-15G LM-15G

TABLE OF CONTENTS

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

2. SPECIFIC SERVICE INSTRUCTIONS ....................................................................................................... 1-6

3. DISASSEMBLY ........................................................................................................................................... 1-7

4. ADJUSTEMNT .......................................................................................................................................... 1-12

5. TROUBLE SHOOTING ............................................................................................................................. 1-13

No.52151

2003/7

Page 2

Items Contents

Type

Dimensions (W × H × D)

Mass

Color system

Scanning frequency

Power Input

Power consumption

LCD Panel

Picture Tube

Display Pixels

Input/Output VIDEO A

terminals

VIDEO B

PC input

REMOTE INPUT

ASPECT

SPECIFICATION

LCD Video Monitor

37cm × 31.1cm × 14.2cm

3.7kg

PAL / NTSC

H : 31.5kHz

V : 56Hz

AC100V/AC240V, 50Hz/60Hz

35W

15-in, active matrix TFT

Visible size : 38cm(Diagonal) / 30.4cm × 22.8cm(H × V)

Hovizontal : 1024 pixel × Vertical : 768 pixel

Composite video, BNC connector ×2, 1V(p-p), 75Ω negative sync

(bridge connection possible, auto termination)

Composite video, BNC connector ×2, 1V(p-p), 75Ω negative sync

(bridge connection possible, auto termination)

Analog RGB : D-sub(16 pin) ×1, positive 0.7 (p-p)

RCA pin ×1

60kHz(PC) / 15.734kHz(NTSC) / 15.625kHz(PAL)

~ 70Hz(PC) / 59.94(NTSC) / 50Hz(PAL)

NOTE: Design & specifications are subject to change without notice.

1-2 (No. 52151)

Page 3

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 (!) 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 : ( GND, the ISOLATED (NEUTRAL) : ( EARTH : (

) side GND. Don't short between the LIVE

) side GND and

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.

(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.

) side

(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, screw heads, 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 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.

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, OR MORE SENSITIVITY)

0.15µF AC-TYPE

(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.

GOOD EARTH GROUND

1500Ω 10W

PLACE THIS PROBE ON EACH EXPOSED ME TAL PART

(No. 52151) 1-3

Page 4

1.2 INSTALLATION

1.2.1 HEAT DISSIPATION

If the heat dissipation vent behind this unit is blocked, cooling efficiency may deteriorate and temperature inside the unit will rise. Therefore, please make sure pay attention not to block the heat dissipation vent as well as the ventilation outlet behind the unit and ensure that there is room for ventilation around it.

front side Note

wall

20cm

1.2.2 INSTALLATION REQUIREMENTS

Ensure that the minimal distance is maintained, as specified below, between the unit with and the surrounding walls, as well as the floor etc. Install the unit on stable flooring or stands. Take precautionary measures to prevent the unit from tipping in order to protect against accidents and earthquakes.

Use the metal fittings of the exclusive use option.

1.Hang on the wall

2.Hang from the ceiling

3.Put on the table

10cm

front

wall

20cm

10cm

front wall

10cm

front

wall

10cm

front

wall

Install has to be done by professional construction trader

Please confirm the structure and the strength of the wall to install beforehand. It attempts accident prevention and safe securing .

Install on the fixed floor and the stand.

To prevent from an accident and for the safe securing of an earthquake and so on, please process for tumble prevention.

15cm

5cm

15cm

1.2.3 FALL TIP PREVENTION MEASURES

Take precautionary measures to prevent the unit from falling or tipping to protect against emergencies such as earthquakes as well as accidents. Attach the supplied stand to the monitor as shown, and then fix it with the screws. Please fix the stand with the supplied screw (A) first, and then fix it with the screws (B).

1-4 (No. 52151)

10cm

Page 5

1.3 PRECAUTIONS

(1) Depending on the around temperature, the brightness leaning occurs. Be careful of the environment in the product

installation place and so on sufficiently.

(2) Don't hinder radiation from the back, the heaven and the side. Please refer to the next page that explains about the

condition of the installation.

The inside becomes hot if hindering radiation and there is fear, which the inner circuit damages. (3) Install in the place with good ventilation. Use in the condition that around temperature is in the 0~35°C range. (4) Avoid preservation and use at the high temperature or high humidity place. If you behave like this, leaning sometimes

happens in the screen when the set actives. (5) Depending on the condition and the environment of display, the slight fleck of the light and leaning of the screen and so on

is sometimes conspicuous. This is the characteristic which is peculiar to liquid crystal display. It is not set trouble. (6) This monitor has cool cathode pipe as the backlight. The time change and the use time sometimes change brightness

and condition of display.

1.4 THE ATTENTION IN TRANSPORTATION

When transporting a set, if the load handling is bad (throwing, falling and so on) however it is using a solid box, pressure inside liquid crystal display. In the case there is fear to break the liquid crystal display while transporting. To prevent from the accident or trouble while transporting, pay attention to choice of the transportation company sufficiently and also arrange for it in the delivery after the attention of the load handling is explained to the transportation company. This set is used glass for composing liquid crystal display. When carrying, pay attention not to add over vibration and impact sufficiently.

(No. 52151) 1-5

Page 6

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 DESCRIPTION ABOUT LIQUID CRYSTAL PANEL

2.2.1 STRUCTURE OF LIGUID CRYSTAL PANEL

The Liquid Crystal Panel of this model is TFT Panel. The Print circuit board that consist of TFT array and the print circuit board adopted stripe shaped image element alignment are used. These two boards are mixed. The Liquid crystal is enclosed between two boards.

2.1.2 LONG RANGE AFTERIMAGE OF LIQUID CRYSTAL

The small amount of ion material has mixed a liquid crystal panel with the liquid crystal material in the manufacturing process. If ion material is piled up partially among the poles when the voltage is impressed among the poles, the brightness difference occurs and becomes a long-range afterimage If same picture is reflected for long time, such a long-range afterimage occurs. If the long-range afterimage occurs, we recommend that you reflect the single color image and so on to restore.

2.1.3 THE DISPLAY REPLYING SPEED OF LIQUID CRYSTAL

Because the speed to display of Liquid crystal panel is slower than the speed of the CRT monitor, some of the moving picture cannot overtake to the speed to display and the image looks flowing is sometimes displayed. This is not trouble, but efficiency of Liquid Crystal.

2.1.4 THE EYESIGHT CORNER OF LIQUID CRYSTAL

The liquid crystal panel has the wide eyesight corner for which it is difficult to reverse brightness. The tint changes depending on the direction to see a screen. This is not trouble, but efficiency of Liquid Crystal.

2.1.5 THE PICTURE ELEMENT FAULT OF LIQUID CRYSTAL

The liquid crystal panel is composed of precise technique but all devices don't always work right.

2.2 ATTENTION ITEMS WHEN REPLACING PARTS

2.2.1 ATTENTION TO EXCHANGE THE LIQUID CRYSTAL PANEL

(1) The stillness electricity sometimes makes damage a liquid crystal panel. In liquid crystal panel exchange, do a measure

of the stillness electricity such as the earth band.

(2) A liquid crystal panel and back-light are made from glass. If you gain an impact to these materials, there is fear to damage.

So in case of treatment, be careful sufficiently.

(3) Fix with the screw after confirming that there is not a float to chassis base when exchanging liquid crystal panel.

After that reflect all the black signals and confirm that brightness leaning doesn't occur near the screw fixation part. When brightness leaning occurs, slacken a screw in the neighborhood until the brightness leaning is running-out.

(4) Fix the torque that installs a screw below 0.294Nm.

If you install at any more torque, the liquid crystal panel is transformed and sometimes damages.

(5) If you pull out or insert each connector when power is ON, it causes the trouble.

So pull out or insert each connector in the condition to have pulled out a power supply plug.

2.2.2 ATTENTION WHEN EXCHANGING THE BACK-LIGHT

(1) The back-light is the glass which used cool cathode pipe. In treatment and exchange, pay attention to the following point. (2) Leave the set for a while in the condition that the power is off. Behave the exchanging after lamp's getting cold sufficiently. (3) Adhering the garbage or dust to the luminous part causes brightness leaning Don't touch a part except the lamp folder. (4) The lamp part is fear to break if extra power is gained by the part of the neighborhood of the liquid crystal panel and so on.

Handle the lamp folder and pull out slowly. (5) In installation, insert the lump slowly until the nail of the lamp fixation hangs. (6) Dispose of the exchanged background light according to the local code.

2.2.3 ATTENTION WHEN EXCHANGING THE MAIN PWB

To show the original efficiency of the MAIN PWB, pull out a heat think from the previous MAIN PWB and install it in the new PWB surely.

2.2.4 ATTENTION WHEN EXCHANGING THE FUSE

When exchanging the fuse, please use specified parts. After fuse exchange, confirm that insulater is set to the shield and insulate surely.

1-6 (No. 52151)

Page 7

SECTION 3

DISASSEMBLY

3.1 DISASSEMBLY PROCEDURE

CAUTION:

• Even with the power switch off, some parts of the unit

are live. Be sure to disconnect the power plug from the AC outlet before disassembly and reassembly.

• Remove the power cord.

3.1.1 REMOVING THE BASE

(1) Lie down the unit and let panel downward. (2) As shown in Fig.1, remove 1 screw [A] and loosen the

two spring screws on BASE.

(3) Slightly remove the BASE.

3.1.2 REMOVING THE FUNCTION COVER

• Remove the BASE.

(1) As shown in Fig.1, remove 5 screws [B]. (2) Shift the FUNCTION COVER toward BASE and raise

upward.

3.1.3 REMOVING THE MAIN PWB

• Remove the FUNCTION COVER.

(1) As shown in Fig.1, remove 4 screws [C]. (2) Slightly remove the MAIN PWB upward.

3.1.4 REMOVING THE POWER PWB

• Remove the FUNCTION COVER.

(1) As shown in Fig.1, remove 4 screws [D]. (2) As shown in Fig.1, remove 1 screw [E], and remove the

earth wire.

(3) Slightly remove the POWER PWB upward.

3.1.9 REMOVING THE CONTROL BRACKET

• Remove the FRONT COVER.

(1) As shown in Fig.1, remove 3 screws [M]. (3) Remove the CONTROL BRACKET upward.

3.1.10 REMOVING THE CONTROL BUTTON

• Remove the CONTROL BRACKET.

(1) As shown in Fig.1, remove 4 screws [N]. (2) Remove two CONTROL BUTTON downward.

3.1.11 REMOVING THE FRONT CONTROL 1 PWB AND THE FRONT CONTROL 2 PWB

• Remove the CONTROL BRACKET.

(1) As shown in Fig.1, remove 2 screws [P]. (2) Remove the FRONT CONTROL 1 PWB upward. (3) As shown in Fig.1, remove 2 screws [Q]. (4) Remove the FRONT CONTROL 2 PWB upward.

3.1.12 REMOVING THE BACK COVER AND THE TERMINAL BRACKET

• Remove the FUNCTION COVER.

• Remove the MAIN PWB

• Remove the POWER PWB

• Remove the INVERTER PWB

• Remove the BNC INPUT PWB

• Remove the FRONT COVER

• Remove the LCD PANEL.

• Remove the CONTROL BRACKET

(1) As shown in Fig.1, remove 4 screws [S]. (2) Remove the BACK COVER and the TERMINAL BRACKET.

3.1.5 REMOVING THE INVERTER PWB

• Remove the FUNCTION COVER.

(1) As shown in Fig.1, remove 3 screws [F]. (2) Slightly remove the INVERTER PWB upward.

3.1.6 REMOVING THE BNC INPUT PWB

• Remove the FUNCTION COVER.

(1) As shown in Fig.1, remove 2 screws [G]. (2) Slightly remove the BNC INPUT PWB upward.

3.1.7 REMOVING THE FRONT COVER

• Remove the BASE.

(1) Lie down the unit and let panel upward. (2) As shown in Fig.1, remove 4 screws [H]. (3) Slightly remove the FRONT COVER.

3.1.8 REMOVING THE LCD PANEL, THELCD BRACKET (R) AND THE LCD BRACKET (L)

• Remove the FRONT COVER.

(1) As shown in Fig.1, remove 4 screws [J]. (2) Raise LCD PANEL upward. (3) As shown in Fig.1, remove 4 screws [K]. (4) Remove the LCD BRACKET (R) and the LCD BRACKET

(L).

(No. 52151) 1-7

Page 8

TERMINAL BRACKET

POWER PWB

INVERTER PWB

SPRING SCREW

BASE

FUNCTION COVER

BACK COVER

MAIN PWB

EARTH

WIRE

BNC INPUT

PWB

CONTROL BUTTON

LCD BRACKET (R)

LCD PANEL

FRONT CONTROL 1 PWB

1-8 (No. 52151)

LCD BRACKET (L)

CONTROL BUTTON

FRONT CONTROL 2 PWB

CONTROL

BRACKET

FRONT COVER

Fig. 1

Page 9

3. 2 REPLACEMENT OF MEMORY IC

3.2.1 MEMORY IC

The memory is in the MAIN PWB. The MAIN PWB is only for reference. Avoid replacing individual parts. Replace entire unit only. When the microcomputer or the memory are out of crder, exchange a MAIN PWB.

3. 3 USER SETTING

! PC side

Setting item Setting content Setting value

BACK LIGHT 0 – 100 100

CONTRAST 0 – 100 50

H. POSITION 0 – 100 50

V. POSITION 0 – 100 50

COLOR TEMP.

H. OSD POSITION 0 – 100 50

V. OSD POSITION 0 – 100 50

REMOTE ON/OFF OFF

! Video side (VIDEO A,B)

HIGH,NATURAL,LOW,USER

NATURAL

Setting item Setting content Setting value

BACK LIGHT 0 – 100 100

PICTURE 0 – 100 0

PHASE 0 – 45 23

CHROMA 0 – 100 80

ASPECT 4 : 3, 16 : 9 4 : 3

COLOR TEMP.

LOW LIGHT ADJ. 0 – 255 20

SIGNAL LEVEL STD, AMP STD

H. OSD POSITION 0 – 100 50

V. OSD POSITION 0 – 100 5 0

AGC ON/OFF ON

REMOTE ON/OFF OFF

HIGH,NATURAL,LOW,USER

NATURAL

(No. 52151) 1-9

Page 10

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.

1-10 (No. 52151)

Page 11

SECTION 4

ADJUSTMENT

The service manual does not describe ADJUSTMENT.

(No. 52151) 1-11

Page 12

SECTION 5

TROUBLE SHOOTING

The service manual does not describe TROUBLE SHOOTING.

1-12 (No. 52151)

Page 13

VICTOR COMPANY OF JAPAN, LIMITED

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

(No. 52151)

Printed in Japan

WPC

Page 14

INSTRUCTIONS

LCD VIDEO MONITOR

LM-15G

Thank you for purchasing this JVC LCD video monitor. Before using it, read and follow all instructions carefully to take full advantage of the monitor’s capabilities.

(* “LCD” stands for Liquid Crystal Display.)

For Customer Use:

Enter below the Serial No. which is located on the rear of the cabinet. Retain this

information

for future reference.

Model No. : LM-15G Serial No. :

Page 15

Contents

Safety Precautions.................................................................................................... 3

Installation.................................................................................................................. 5

Unpacking the Monitor................................................................................................. 5

Controls and Features................................................................................................. 5

Using Y our Monitor .................................................................................................. 7

Turning the Monitor On and Off ................................................................................. 7

Caring for and Cleaning the Monitor .......................................................................... 7

Using the Menu ........................................................................................................ 8

Summary of Control Buttons........................................................................................ 8

Menu Operations......................................................................................................... 8

Using the Monitor in the PC mode............................................................................... 13

Basic Connection Example ..................................................................................... 14

Troubleshooting ....................................................................................................... 15

Specifications.............................................................................................................. 16

Page 16

SAFETY PRECAUTIONS

In order to prevent any fatal accidents caused by disoperation or mishandling the monitor, be fully aware of all the

following precautions.

WARNINGS

To prevent fire or shock hazard, do not expose this monitor to rain or moisture. Dangerous high voltages are present

inside the unit. Do not remove the back cover of the cabinet. When servicing the monitor, consult qualified service

personnel. Never try to service it yourself.

WARNING: THIS APPARATUS MUST BE EARTHED.

This monitor is equipped with a 3-blade grounding-type plug to satisfy FCC rule. If you are unable to insert the

plug into the outlet, contact your electrician.

FCC NOTICE (U.S.A. only)

CAUTION: Changes or modifications not approved by JVC could void the user’s authority to operate the

equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to

Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference

when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate

radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful

interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful

interference in which case the user will be required to correct the interference at his own expense.

PRECAUTIONS

● Use only the power source specified on the unit.

● When not using this unit for a long period of time, or when cleaning it, be sure to disconnect the power plug from

the AC outlet.

● Do not allow anything to rest on the power cord. And do not place this unit where people will tread on the cord. Do

not overload wall outlets or power cords as this can result in a fire or electric shock.

● Avoid using this unit under the following conditions:

– in extremely hot, cold or humid places,

– in dusty places,

– near appliances generating strong magnetic fields,

– in places subject to direct sunlight,

– in badly ventilated places,

– in automobiles with doors closed.

● Do not cover the ventilation slots while in operation as this could obstruct the required ventilation flow.

● When dust accumulates on the screen surface, clean it with a soft cloth.

Page 17

● Unplug this unit from the AC outlet and refer servicing to qualified service personnel under the following conditions:

– when the power cord is frayed or the plug is damaged,

– if liquid has been spilled into the unit,

– if the unit has been dropped or the cabinet has been damaged,

– when the unit exhibits a distinct change in performance.

● Do not attempt to service this unit yourself as opening or removing covers may expose you to dangerous voltage or

other hazards. Always refer servicing to qualified service personnel.

● When replacement parts are required, have the service personnel verify in writing that the replacement parts

he/she uses have the same safety characteristics as the original parts. Use of manufacture’s specified

replacement parts can prevent fire, shock, or other hazards.

● Upon completion of any servicing or repair work to this unit, please ask the service personnel to perform the safety

check described in the manufacturer’s service literature.

● When this unit reaches the end of its useful life, improper disposal could result in a picture tube implosion. Ask

qualified service personnel to dispose of this unit.

POWER CONNECTION

The power supply voltage rating of this product is AC 120 V (For U.S.A. and Canada only) and AC 230 V (For

European countries or United Kingdom), the power cord attached conforms to the following power supply voltage

and countries. Use only the power cord designated to ensure Safety and EMC regulations of each countries.

Power cord

Power supply voltage : AC 120 V AC 230 V AC 230 V AC 220V

Countries : U.S.A. and Canada European countries United Kingdom Chinese

Warning:

● Do not use the same Power Cord for AC 120 V as for AC 230 V. Doing so may cause malfunction, electric shock or

fire.

Note for the United Kingdom power cord only

The plug on the United Kingdom power cord has a built-in fuse. When replacing the fuse, be sure to use only a

correctly rated approved type, re-fit the fuse cover. (Consult your dealer or qualified service personnel.)

How to replace the fuse

Open the fuse compartment with the blade screw driver,

And replace the fuse.

(* An example is shown in the illustration.)

Page 18

Installation

Please follow the instructions in this chapter to install your LCD Monitor.

Note: Before connecting your monitor, first read through the instructions in this chapter and the safety precautions in

the previous chapter.

Unpacking the Monitor

When you are unpacking the monitor, make sure that you have the following items:

Ö The LCD monitor

Ö AC power cord

Ö Stand and screw

Ö This instruction book

Note: Place the monitor on a flat, sturdy surface. Choose an area free from excessive heat, moisture, and sunlight.

Attach the supplied stand to the monitor as shown, and then fix it with the screws. Please fix the stand with the

supplied screw (A) first, and then fix it with the screws (B).

Controls and Features

2 3

7 8

Page 19

□1 Down ( ▼ ) button

□

UP ( ▲ ) button

□

MENU/ENTER button

□

Video button

□

PC button

□6 Power switch [POWER]

□

VIDEO A indicator

□

VIDEO B indicator

□

PC indicator

□10 Power indicator

Use this button for menu operation. (See page 8) Displays the “AUTO SET UP” menu in the PC mode. (See page 13) Use this button for menu operation. (See page 8) Displays the “AUTO SET UP” menu in the PC mode. (See page 13) Use this button for menu operation. (See page 8)

Selects the VIDEO A or B input.

Selects the PC input.

Press this to turn the power on or off.

Lights when VIDEO A input is selected.

Lights when VIDEO B input is selected.

Lights when PC input is selected.

Lights in green when the power is on. Unlit when the power is off. Lights in amber when the monitor is in a reduced power mode, when there is no signal or when the signal is out of range.

To AC outlet (220V AC,50Hz/60Hz)

Chinese

□11 AC inlet □12 VIDEO A terminals

□13 VIDEO B terminals □14 Remote (external

control) terminals

□15 PC input terminal

□16 AC power cord

(Provided)

Note: For more details about connections, see the "Basic Connection Example" on page 14.

Connect the provided AC power cord 16 to this inlet. Then connect the AC power cord 16 to the AC outlet (120V AC/220V AC or 230V AC, 50Hz/60Hz) Video signal input (IN) and output (OUT) terminals for VIDEO A input.

Video signal input (IN) and output (OUT) terminals for VIDEO B input.

Terminals for controlling the monitor from external unit. You can select input signals, or change the ASPECT RETIO setting via the Remote terminals.

You can connect this monitor to your PC. Before using this terminal, please see the "Video Modes (Analog PC signal)” and “Unknown Video Modes (Analog PC signal)” on page 18. CAUTION: In North America (USA and Canada), this monitor comes with one power cord. In Europe and the United kingdom, two power cords are provided. Be sure to use the power cable that is appropriate for the AC outlets used in your region. If none of the power cord provided is suitable, please contact your dealer or qualified service personnel to obtain the correct type of power cord.

Page 20

Using Your Monitor

This chapter contains information about using your LCD Monitor.

Turning the Monitor On and Off

Use the power button located at the lower right side of the front panel of the monitor to turn the monitor on and off. When the monitor is on, the Power indicator near the Power button lights green.

The monitor goes into the reduced power mode when there is no video signal input. And then the Power indicator changes amber from green.

The Power indicator lights amber when the video signal input is out of range .

Note: Because of the technology used in LCD panels, screen savers will not prolong the life of your monitor . So if

the monitor will not be used for an extended period, be sure to turn it off.

Caring for and Cleaning the Monitor

To maximize screen life and prevent damage to the LCD panel, we recommend that you:

Ö Turn the monitor off when you are not using this monitor for a long period of time.

Ö Don’t press, rub, or poke the monitor with your finger or other object.

Ö Handle your monitor with care.

Your LCD module is a high-quality optical device that requires special care when cleaning.

Warning

To clean the screen:

1. Turn off and unplug the monitor.

2. Gently dust the screen with a dry, soft, line-free cloth.

Note: If the screen is still dirty, you can dampen the cloth with several drops of distilled water. Make sure the LCD

panel is completely dry before you turn the monitor on.

Don’t use liquid, aerosol, or abrasive cleaning solutions to clean the

Page 21

Using the Menu

This chapter contains information about how to changing monitor settings for your LCD Monitor. It is designed with an menu to help you easily adjust to its optimum performance.

Note: In the PC mode, do the “AUTO SET UP” setting first, before adjusting any settings. For details, see “AUTO

SET UP” on page 13.

Summary of Control Buttons

There are three control buttons located at the lower part of the front panel of your monitor:

Ö MENU/ENTER: Display and select a menu. You can also exit a menu by pressing this button repeatedly. Ö UP( ): Move upward through the choice in the submenu. If an adjustment bar is displayed, this button increases

the setting value.

Ö Down( ) : Move downward through the choice in the submenu. If an adjustment bar is displayed, this button

decreases the setting value.

Menu Operation

1. Press the ‘MENU/ENTER’ button to display the “BACK LIGHT” menu..

2. Press the ‘MENU/ENTER’ button repeatedly to display the menu you want to use.

− ＋100

PICTURE ADJ.

COLOR TEMP.

LOW LIGHT ADJ.

BACK LIGHT

PICTURE

PHASE

CHROMA

ASPECT

3. Press the ‘UP’ and ‘DOWN’ button to choose the item, and then press the ‘MENU/ENTER’ button to display the

sub-menu.

ASPECT

4：3

16：9

・ If the item do not have sub-menu, go to the step 4.

4. Press ‘UP’ and ‘DOWN’ button to adjust it, or choose a setting.

5. Press the ‘MENU/ENTER’ button repeatedly to exit the menu.

・ To return to the menu from the sub-menu, press the ‘MENU/ENTER’ button

・The menu will disappear if no operation is performed for approximately 15 seconds.

Page 22

In the VIDEO A or B mode (composite video input):

Menu Items BACK LIGHT You can adjust the light output of the backlight. PICTURE ADJ. PICTURE, PHASE, CHROMA, ASPECT, COLOR TEMP., LOW LIGHT ADJ. . SYSTEM SETTING SIGNAL LEVEL, DISPLAY, OSD POSITION, COLOR SYSTEM, AGC, REMOTE, All

reset

In the PC mode (analog RGB input):

Menu Items BACK LIGHT You can adjust the light output of the backlight. CONTRAST You can adjust the contrast of the picture. POSITION ADJ. H.POSITION, V. POSITION WHITE BALANCE

ADJ. DISPLAY ADJ. AUTO SET UP, CLOCK, PHASE SYSTEM SETTING DISPLAY, OSD POSITION, REMOTE, All reset

COLOR TEMP., LOW LIGHT ADJ.

BACK LIGHT menu

You can adjust the light output of the backlight.

BACK LIGHT

− ＋100

PICTURE ADJ. menu

PICTURE ADJ.

PICTURE

PHASE

CHROMA

ASPECT

COLOR TEMP.

LOW LIGHT ADJ.

PICTURE: You can adjust the levels of black and white on the screen, giving you a darker or brighter picture

overall.

PHASE: You can adjust the picture hue. When the COLOR SYSTEM is BW60, BW50 or PAL, you cannot adjust

the PHASE.

CHOROMA: You can adjust the picture color density. When the COLOR SYSTEM is BW60 or BW50, you cannot

adjust the CHOROMA.

ASPECT: You can choose the screen aspect ratio between “4：3 ” and “ 16：9 ”.

COLOR TEMP.: If you select ‘COLOR TEMP.’ and press the ‘MENU/ENTER’ button, the “COLOR TEMP.” menu will

appear. For details, see the following “COLOR TEMP.” menu.

LOW LIGHT ADJ.: At the video mode: You can adjust the brightness of the dark part of picture. At the PC mode: You can adjust the R.G.B. balance of the dark part of picture. For details of the

adjustments, see “HIGH LIGHT ADJ.” in page10

Next page: If you select ‘Next page’ and press the ‘MENU/ENTER’ button, the next menu will appear.

Page 23

COLOR TEMP. menu

1. Press the ‘UP’ and ‘DOWN’ button to choose the “COLOR TEMP.”, and then press the ‘MENU/ENTER’ button

to display the sub-menu.

COLOR TEMP.

HIGH NATURAL LOW USER

2. Press ‘UP’ and ‘DOWN’ button to choose one of four Color temp settings: HIGH, NATURAL, LOW and USER.

“USER” setting:

You can store the adjustments of “HIGH LIGHT ADJ.” to the “USER” setting.

・ In “HIGH”, “NATURAL” and “LOW”, you cannot use “HIGH LIGHT ADJ.”.

1. Press the ‘UP’ or ‘DOWN’ button to choose the “USER” , and then press the ‘MENU/ENTER’ button to return to

the “HIGH LIGHT ADJ.” menu.

HIGH LIGHT ADJ.

RED

GREEN

BLUE

2. Press ‘UP’ and ‘DOWN’ button to choose “RED”, and then press ‘MENU/ENTER’ button to display the adjusting

menu.

3. Press ‘UP’ or ‘DOWN’ button to adjust the level, and then press ‘MENU/ENTER’ button to return to the

4. Repeat step 3 and 4 for other colors “GREEN” and “BLUE” to complete the “HIGH LIGHT ADJ.” setting.

−

sub-menu

RED

＋

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Page 24

SYSTEM SETTING menu

SYSTEM SETTING

Exit

SIGNAL LEVEL

DISPLAY

OSD POSITION

COLOR SYSTEM

AGC

REMOTE

All reset

SIGNAL LEVEL: You can choose the signal level from ”STD.” or “AMP.”.

STD.: Select this for normal operation.

AMP.: Select this to watch dark part of the picture better.

DISPLAY: If you select ‘DISPLAY’ and press the ‘MENU/ENTER’ button, you can confirm the current status;

resolution, Horizontal frequency and Vertical frequency.

COLOR SYSTEM: You can choose the color system from NTSC, PAL, BW60 or BW50. Choose the correct color

system when the color is abnormal or no color appears.

AGC: You can turn the AGC (Auto Gain Control) function on (ON) or off (OFF).If you select off(OFF), you can adjust

contrast bar.

REMOTE: If you select ON, you can only do remote control. If you select OFF, you can control only by using the

monitor’s buttons.

Exit: If you select “Exit” and press the ‘MENU/ENTER’ button, the menu will disappear. All reset: If you select “All reset” and press the ‘MENU/ENTER’ button, the settings will be return to the factory

settings.

* “COLOR SYSTEM” and the input select will not be return to the factory settings.

OSD POSITION:

You can adjust the position of the menu on the screen as following procedure.

1. Select “OSD POSITION” and press the ‘MENU/ENTER’ button, the sub-menu will appear.

OSD POSITION

H. POSITION V. POSITION

2. Press ‘UP’ and ‘DOWN’ button to choose “H. POSITION” (horizontal position) or “V. POSITION” (vertical position), and then press ‘MENU/ENTER’ button to display the adjusting menu

3. Press ‘UP’ and ‘DOWN’ button to adjust the position of the menu on the screen.

4. Press ‘MENU/ENTER’ button to return to the “OSD POSITION” menu.

Next page: If you select ‘Next page’ and press the ‘MENU/ENTER’ button, the next menu will appear.

CONTRAST menu

You can adjust the contrast of the image from the PC.

−

CONTRAST

＋ 50

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Page 25

POSITION ADJ. menu

You can adjust the position of the image from the PC on the screen.

POSITION ADJ.

H. POSITION

V. POSITION

1. Press ‘UP’ and ‘DOWN’ button to choose “H. POSITION” (horizontal position) or “V. POSITION” (vertical position), and then press ‘MENU/ENTER’ button to display the adjusting menu

2. Press ‘UP’ and ‘DOWN’ button to adjust the position of the picture on the screen.

3. Press ‘MENU/ENTER’ button to return to the “POSITION ADJ.” menu.

Next page: If you select ‘Next page’ and press the ‘MENU/ENTER’ button, the next menu will appear.

DISPLAY ADJ. menu

You can do the necessary adjustments to display the image from the PC.

DISPLAY ADJ.

AUTO SET UP

CLOCK

PHASE

AUTO SET UP:

We recommend you to do the AUTO SET UP first. And then adjust the CLOCK or PHASE if necessary.

To use the AUTO SET UP, select this item and press ‘MENU/ENTER’ button. And follow the step 2 of the description

“AUTO SET UP” on page 13.

CLOCK: You can adjust the Clock. PHASE: You can adjust the Phase. Next page: If you select ‘Next page’ and press the ‘MENU/ENTER’ button, the next menu will appear.

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Page 26

Using the Monitor in the PC mode

Since the inherent format of this monitor is 1024 pixels by 768 lines, the monitor will perform best when your PC is set to a screen resolution of 1024 x 768. If you use a lower resolution (such as 640 x 480), the image is expanded to fill the screen

Your monitor supports many common video modes, as shown in “Video Modes” on page 18. Check the manuals supplied with your PC and video adapter card to find out which modes they support. To see what the video mode in

your Microsoft Windows, please check Windows’settings in your PC.

Do the AUTO SET UP first when you use the monitor in the PC mode.

AUTO SET UP

You can setup this monitor to display the analog RGB signal from your PC. Please do the AUTO SET UP whenever you apply a new video mode or change the refresh rate from the PC.

1. Press ‘UP’ or ‘DOWN’ button while no menu appears on the screen.

The “AUTO SET UP” menu appears on the screen

AUTO SET UP

YES NO

2. Press ‘UP’ or ‘DOWN’ button to choose “YES”, and then press ‘MENU/ENTER’ button to start the AUTO SET

UP. The monitor will do the necessary settings for new PC input automatically.

AUTO SET UP

Please wait…

When you start the AUTO SET UP, do not display moving images (games, videos, etc) on the screen.

3. After the AUTO SET UP is complete, you will be asked whether the image is displayed correctly or not.

AUTO SET UP

Does this image

look correct?

YES NO

4. If the image looks correct, press ‘UP’ or ‘DOWN’ button to choose “YES”.

The menu disappears.

If the image requires further adjustment, press ‘UP’ or ‘DOWN’ button to choose “NO”. “PHASE” menu will appear and you can adjust the PHASE by ‘UP’ or ‘DOWN’ button. When all text appears well focused and there is no instability in the image, press the ‘MENU/ENTER’ button.

The menu disappears.

Note: You can also start the AUTO SET UP with “DISPLAY ADJ.” menu.

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Page 27

Basic Connection Example

Notes:

・ Before connecting your system, make sure that all devices are turned off. ・ The illustration shows some examples of different connections. Terminal connections may differ depending on

the devices. Be sure to refer to the manuals provided with the devices.

・ Each pair of input (IN) and output (OUT) terminals are bridge-connected ・ If you’re not connecting any equipment to a bridged output (OUT) terminal, be sure not to connect any other

cables to the bridged output (OUT) terminal as this will cause the terminating resistance switch to open (auto

terminate function).

・ When making a bridge connection, connect the input (IN) and output (OUT) terminals on the monitor to separate

video components.(For example, if both terminals are connected to the same VCR, resonance may occur except

during playback. This is caused by the same video signal “looping” between the VCRs, and is not a malfunction.)

・ The ASPECT or INPUT A/B settings can be controlled via the ASPECT or INPUT jack in the REMOTE terminal. ・ When using REMOTE terminal, set REMOTE function ON . See “SYSTEM SETTING menu “ on

page 11.

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Page 28

Troubleshooting

Solutions to common problems related to your monitor are described here. If none of the solutions presented here solove the problem, unplug the monitor and consult a JVC-authorised dealer or service centre for assistance.

A. My monitor doesn’t work.

 Check that the power cable is securely plugged into the monitor.

 Check that the monitor is turned on.

 Turn the monitor off and pull the plug out, then put the plug in again and turn the monitor on.

B. My monitor shows no colors, wrong color, or dark pictures.

 Check that the color system is selected correctly. See “SYSTEM SETTING menu” on page 11.

 Check the BACK LIGHT and PICTURE ADJ. settings. See “BACK LIGHT menu” and “PICTURE ADJ.

menu” on page 9.

 In the PC mode, check the CONTRAST setting. See “CONTRAST menu” on page 11.

C. Dark stripes appear at the top and bottom of the screen, picture vertically squeezed.

 Set the ASPECT setting to “4:3”. See “PICTURE ADJ. menu” on page 9.

D. The message “No Sync” appears .

This message appears when there is no video signal. After few seconds, the monitor goes into the reduced power mode.

 Check the connection.

 Select the required video signal input.

 Connect the video signal cable firmly.

 Check that your graphic card outputs the analog RGB signal.

E. The message “Signal Out of Range” appears on my monitor.

This message appears when the input signal is beyond the monitor capability.

Set your PC to a supported video mode; preferably 1024 x 768 at 60 Hz.

F. The image is very unstable in the PC mode.

 Set your PC to a supported video mode; preferably 1024 x 768 at 60 Hz.

 Restore the original factory settings by “All reset”. See “SYSTEM SETTING menu” on page 11.

 Do the “AUTO SET UP”. See “AUTO SET UP” on page 13.

Note: Even if your PC’s setting is out of the range of video modes that are supported by your LCD monitor, it

may still be displayed with reduced quality. This provides you with an opportunity to change your PC’s

setting to a correct one.

The following are not malfunctions:

･The monitor emits a strange sound when the room temperature changes suddenly. This is only a problem if an

abnormality appears on the screen as well.

･When a still image as been displayed for a long period, a faint residual image may remain on the screen for a short

time after the power has been turned off or when another image is displayed. The image will eventually disappear.

･When you see the monitor from the side, the color or brightness look different. ･The LCD panel is made with high-precision technology and has more than 99.99% effective pixels.

Fewer than 0.01% of pixels may be chipped or always lit.

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Page 29

Specifications

 Type ：  Color system ：

 LCD panel ：

 Display colors :

 Display area ：

 Scanning

frequency ：

LCD Video Monitor

NTSC,PAL, BW60,BW50

15-in(38.1cm),active matrix TFT, anti-glare coating , 0.297mm

16700000. colors

Width 304.1mm

High 228.1mm

Diagonal 380 mm

(H) 31.5kHz~60kHz(Analog)

15.734kHz (NTSC)

15.625kHz (PAL)

(V)56Hz~70Hz (Analog)

59.94Hz (NTSC)

50Hz (PAL)

 Pixel dot clock ：  Recommended ：

mode

 Input terminals Video A ：

Video B :

PC input :

 REMOTE INPUT ：



REMOTE ASPECT ：

 Conditions ：

Temperature ：

 Humidity Altitude ：

79 MHz (maximum)

1024 x 768 at 60Hz (Analog)

Composite video:

1 line, BNC connector x 2, 1 V(p-p), 75 W,

bridge-connected (auto termination)

Composite video:

1 line, BNC connector x 2, 1 V(p-p), 75 Ω,

bridge-connected (auto termination)

Analog RGB: D-sub (16 pins) x1,

positive 0.7V

1 line, RCA pin x 1

5℃~40℃ at altitude 0~2000m 5℃~30℃ at altitude 2000~3000m,

20%~85%RH,non-condensing

3000m Max.

 Viewing Angle ：

 Power Input ：

Left/Right 60/60

Up/Down 55/45

100~240V AC,50/60Hz

1.2A at 100V

 Storage Conditions

Temperature ： Humidity ： Altitude ：

 Maximum power

Consumption ：

-20℃~60℃

5%~95% RH

10000m Max

35W

0.6A at 230V

Monitor only:

Width 370mm

 Dimensions :

Height 309mm

Depth 66.1mm

 BACK LIGHT ：

250cd/m

(Typical)

 CONTRAST ： 350：1 (Typical)

With supplied stand:

Width 370 mm

Height 310.6 mm

Depth 142 mm

3.7kg

 Net weight ：

4.2 kg (with stand)

 100mm mount based on VESA regulation is equipped.

*Pictures may not appear on the some of PC even if frequencies are within this range. *.Design and specifications subject to change without notice

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Page 30

 Dimensions

＜Front View＞

＜Side View＞

P17

Page 31

 Video Modes (Analog RGB Signal)

Your LCD monitor supports the following industry-standard combinations of screen resolution and refresh rates.

For optimum performance, set your PC to the screen resolution of 1024 x 768 at 60 Hz refresh rate.

Supported Resolution

(dots x lines)

VGA 640 x 350

640 x 480

SVGA 800 x 600

800 x 600

XGA 1024 x 768

1024 x 768

US TEXT 720 x 400 70 Hz

Power MAC 640 x 480 67 Hz

Vertical Frequency

(Refresh Rate)

70 Hz 60 Hz

56 Hz 60 Hz

60 Hz 70 Hz

 Unknown Video Modes (Analog RGB Signal)

Like all other monitors, the your LCD monitor is designed to work with standard video modes. However, not all video/graphic cards use only standard display modes.

Your LCD monitor uses state-of-the-art technology, which is designed to synchronize to any display mode. We recommend choosing one of the supported modes listed above. If you want to use an unknown mode, do the AUTO SET UP at first. If AUTO SET UP doesn’t make adjustments corrrectly, adjust the CLOCK, PHASE , horizontal position and vertical position manually.

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Page 32

PARTS LIST

CAUTION

! The parts identified by the symbol are important for the safety . Whenever replacing these parts, be sure to use specified

ones to secure thesafety.

! The parts not indicated in this Parts List and those which are filled with lines

supplied.

! P. W. Board Ass'y will not be supplied, but those which are filled with the Parts No. in the Parts No. columns will be supplied.

ABBREVIATIONS OF RESISTORS, CAPACITORS AND TOLERANCES

! in the Parts No. columns will not be

RESISTORS

CR Carbon Resistor

FR Fusible Resistor

PR Plate Resistor

VR Variable Resistor

HV R High Voltage Resistor

MF R Metal Film Resistor

MG R Metal Glazed Resistor

MP R Metal Plate Resistor

OM R Metal Oxide Film Resistor

CMF R Coating Metal Film Resistor

UNF R Non-Flammable Resistor

CH V R Chip Variable Resistor

CH MG R Chip Metal Glazed Resistor

COMP. R Composition Resistor

LPTC R Linear Positive Temperature Coefficient Resistor

CAPACITORS

C CAP. Ceramic Capacitor

E CAP. Electrolytic Capacitor

M CAP. Mylar Capacitor

CH CAP. Chip Capacitor

HV CAP. High Voltage Capacitor

MF CAP. Metalized Film Capacitor

MM CAP. Metalized Mylar Capacitor

MP CAP. Metalized Polystyrol Capacitor

PP CAP. Polypropylene Capacitor

PS CAP. Polystyrol Capacitor

TF CAP. Thin Film Capacitor

MPP CAP. Metalized Polypropylene Capacitor

TAN. CAP. Tantalum Capacitor

CH C CAP. Chip Ceramic Capacitor

BP E CAP. Bi-Polar Electrolytic Capacitor

CH AL E CAP. Chip Aluminum Electrolytic Capacitor

CH AL BP CAP. Chip Aluminum Bi-Polar Capacitor

CH TAN. E CAP. Chip Tantalum Electrolytic Capacitor

CH AL BP E CAP. Chip Tantalum Bi-Polar Electrolytic Capacitor

RESISTORS

FGJ K MNRHZ P

±1% ±2% ±5% ±10% ±20% ±30%

+30% +50% +80% +100%

-10% -10% -20% -0%

(No. 52151) 3-1

Page 33

CONTENTS

EXPLODED VIEW PARTS LIST .................................................................................................................................................... 3-2

EXPLODED VIEW ......................................................................................................................................................................... 3-3

PRINTED WIRING BOARD PARTS LIST ....................................................................................................................................... 3-4

POWER PW BOARD ASS’Y ................................................................................................................................................ 3-4

MAIN PW BOARD ASS’Y ..................................................................................................................................................... 3-5

FRONT CONTROL 1 PW BOARD ASS’Y............................................................................................................................ 3-5

FRONT CONTROL 2 PW BOARD ASS’Y............................................................................................................................ 3-5

BNC INPUT PW BOARD ASS’Y .......................................................................................................................................... 3-5

INVERTER PW BOARD ASS’Y ........................................................................................................................................... 3-5

PACKING ...................................................................................................................................................................................... 3-6

PACKING PARTS LIST ................................................................................................................................................................. 3-6

EXPLODED VIEW PARTS LIST

Ref.No. Part No. Part Name Description Local

1 DA-5642725100 FRONT COVER 2 DA-5642678400 CLIP x4 3 DA-5642724600 CONTROL BRACKET 4 DA-5642848800 CONTROL BUTTON x2 5 DA-5648736900 LCD BRACKET (L) 6 DA-5642724900 BACK COVER 7 DA-5646549200 INSULATOR 8 DA-5642725200 FUNCTION COVER 9 DA-5642724700 TERMINAL BRACKET 10 DA-5646440601 HEAT SINK (P) x2 11 DA-5646425700 HEAT SINK (E) 12 DA-5642724400 BASE 13 DA-5648736901 LCD BRACKET (R) 14 DA-5642673100 LED HORDER x4 15 DA-5051253631 LCD Panel 16 DA-5030573202 MODEL LABEL LM-15G/E 16 DA-5030573204 MODEL LABEL LM-15G/C 16 DA-5030573201 MODEL LABEL LM-15G/U S1 DA-7190562313 SCREW (M3x6) x17 S2 DA-7000311032 SCREW (M3x6) x26 S3 DA-7134161186 SCREW (M3x8) x3 S4 DA-7004171116 SCREW (M3x8) S5 DA-7160250652 SCREW (M4x6)

3-2 (No. 52151)

Page 34

EXPLODED VIEW

INVERTER

PWB

POWER PWB

BNC

MAIN PWB

PWB

INPUT

FRONT CONTROL 2 PWB

(No. 52151) 3-3

Page 35

PRINTED WIRING BOARD PARTS LIST

POWER PWB ASS’Y

! Symbol No. Part No. Part Name Description Local ! Symbol No. Part No. Part Name Description Local

RESISTORS

R801 DA-5101111400 TMERMISTOR 5Ω 5A

R802 DA-5142868490 C RESISTOR 650kΩ 1/4W

R803 DA-5142868490 C RESISTOR 680kΩ 1/4W R084 DA-5142833495 C RESISTOR 330kΩ 1/4W R805 DA-5142833495 C RESISTOR 330kΩ 1/4W R806 DA-5142833495 C RESISTOR 330kΩ 1/4W R807 DA-5130251090 OM RESISTOR 51Ω 1/2W R808 DA-5130310490 OM RESISTOR 100kΩ 1W R809 DA-5142833395 C RESISTOR 33kΩ 1/4W R810 DA-5142833395 C RESISTOR 33kΩ 1/4W R811 DA-5142810595 C RESISTOR 1MΩ 1/4W R812 DA-5142147295 C RESISTOR 4.7kΩ 1/6W R813 DA-5142110495 C RESISTOR 100kΩ 1/6W R814 DA-5142110295 C RESISTOR 1kΩ 1/6W R815 DA-5142110295 C RESISTOR 1kΩ 1/6W R816 DA-5142115395 C RESISTOR 15kΩ 1/6W R817 DA-5142115395 C RESISTOR 15kΩ 1/6W R818 DA-5142147395 C RESISTOR 47kΩ 1/6W R819 DA-5142110495 C RESISTOR 100kΩ 1/6W R820 DA-5142156395 C RESISTOR 56kΩ 1/4W R821 DA-5142110495 C RESISTOR 100kΩ 1/6W R822 DA-5142110395 C RESISTOR 10kΩ 1/6W R823 DA-5142110595 C RESISTOR 1kΩ 1/6W R824 DA-5142143295 C RESISTOR 4.3kΩ 1/6W R825 DA-5134730119 MF RESISTOR 3.01kΩ 1/6W R826 DA-5142147195 C RESISTOR 470Ω 1/6W R827 DA-5142182195 C RESISTOR 820Ω 1/6W R828 DA-5130251090 OM RESISTOR 51Ω 1/2W R829 DA-5142868995 C RESISTOR 6.8Ω 1/4W R830 DA-5130333890 OM RESISTOR 0.33Ω 1W R831 DA-5130210095 OM RESISTOR 10Ω 1/2W R832 DA-5142815295 C RESISTOR 1.5kΩ 1/4W R833 DA-5142815295 C RESISTOR 1.5kΩ 1/4W R834 DA-5134738329 MF RESISTOR 38.4kΩ 1/6W R835 DA-5142133495 C RESISTOR 330kΩ 1/6W R836 DA-5134710028 MF RESISTOR 10kΩ 1/6W R837 DA-5142147295 C RESISTOR 4.7kΩ 1/6W R838 DA-5142847295 C RESISTOR 4.7kΩ 1/4W R839 DA-5142847195 C RESISTOR 470Ω 1/4W R840 DA-5142110295 C RESISTOR 1kΩ 1/6W R841 DA-5142833395 C RESISTOR 33kΩ 1/4W R842 DA-5142147295 C RESISTOR 4.7kΩ 1/6W

CAPACITORS

C801 DA-5270113301 MF CAPACITOR 0.33µF 275V M

C802 DA-5230108601 C CAPACITOR 4.7µF 250V M

C803 DA-5230108601 C CAPACITOR 4.7µF 250V M

C804 DA-5213019300 E CAPACITOR 120µF 400V M C805 DA-5233310291 C CAPACITOR 1µF 1KV K

C806 DA-5230108301 C CAPACITOR 1µF 250V M C807 DA-5216021991 ELEC.LOW ESR CAP. 47µF 50V M C808 DA-5231310391 C CAPACITOR 10µF 50V K C809 DA-5221110391 POLYESTER CAP. 10µF 50V J C810 DA-5231347191 C CAPACITOR 470pF 50V K C811 DA-5216022191 ELEC.LOW ESR CAP. 10µF 50V M C812 DA-5216022091 ELEC.LOW ESR CAP. 1µF 50V M C813 DA-5231322191 C CAPACITOR 220pF 50V K C814 DA-5222410491 POLYESTER CAP. 100µF 100V J C815 DA-5232347191 C CAPACITOR 470pF 500V K C816 DA-5216021891 ELEC.LOW ESR CAP. 1000µF 16V M C817 DA-5216021891 ELEC.LOW ESR CAP. 1000µF 16V M C818 DA-5216021791 ELEC.LOW ESR CAP. 470µF 16V M C819 DA-5231310391 C CAPACITOR 1µF 50V K C820 DA-5231347291 C CAPACITOR 4.7µF 50V K C821 DA-5231310391 C CAPACITOR 10µF 50V K C822 DA-5231310391 C CAPACITOR 10µF 50V K

C823 DA-5270113701 MF CAPACITOR 470pF 275V M

TRANSFORMERS

T801 DA-5061377320 SWIT CHING

COILS

L801 DA-5061113700 COIL, LINE FILTER 14mH L802 DA-5062142100 COIL CHOKR 1.5µH

L803 DA-5061113800 COIL, LINE FILTER 260µH

DIODES

D801 DA-6641000704 BRIDGES D802 DA-6611007740 SILICON D803 DA-6615023745 SILICON D804 DA-6611007240 SILICON D805 DA-6615007531 ZENER D806 DA-6611020442 SILICON D807 DA-6613003032 SILICON D808 DA-6611010407 SILICON

TRANSISTORS

Q801 DA-6626005100 FET Q802 DA-6621032132 SILICON Q803 DA-6621025832 SILICON Q804 DA-6621025832 SILICON Q805 DA-6624000737 SILICON Q806 DA-6621025832 SILICON Q807 DA-6621025832 SILICON

IC801 DA-6644063004 IC IC802 DA-6640007706 IC

IC803 DA-6642002904 PHOTO COUPLER

OTHERS

4E01 DA-5646425700 HEAT SINK(E) 4E02 DA-5646440601 HEAT SINK(E) Q801M DA-5646440600 HEAT SINK(P) F801 DA-5054420084 FUSE 250V/2A

P801 DA-5056415343 AC INLET P802 DA-5057404352 4PIN CONNECTOR

3-4 (No. 52151)

Page 36

LM-15G

MAIN PWB ASS’Y

! Symbol No. Part No. Part Name Description Local ! Symbol No. Part No. Part Name Description Local

DA-5097620300 MAIN PWB ASS’Y

FRONT CONTROL 1 PWB ASS’Y

! Symbol No. Part No. Part Name Description Local

DA-5097620400 FRONT CONTROL 1 PWB ASS’Y

FRONT CONTROL 2 PWB ASS’Y

! Symbol No. Part No. Part Name Description Local

DA-5098800629 FRONT CONTROL 2 PWB ASS’Y

BNC INPUT PWB ASS’Y

! Symbol No. Part No. Part Name Description Local

DA-5098800628 BNC INPUT PWB ASS’Y

INVERTER PWB ASS’Y

! Symbol No. Part No. Part Name Description Local

DA-5097613200 INVERTOR PWB ASS’Y

(No. 52151) 3-5

Page 37

PACKING

6 8 9

PACKING PARTS LIST

Ref.No. Part No. Part Name Description Local

1 DA-9513280156 BLANK CARTON 2 DA-9513265156 ANCHOR SHEET 3 DA-6513285356 ANCHOR SHEET-TOP 4 DA-9533070256 PE BAG 5 DA-9533070356 ZIP LOCK PE BAG

6 DA-5030053001 USER’S MANUAL LM-15G/E

6 DA-5030053010 USER’S MANUAL LM-15G/C

6 DA-5030053011 USER’S MANUAL LM-15G/U 7 DA-5056706081 POWER CORD LM-15G/E 7 DA-5056705939 POWER CORD LM-15G/E 7 DA-5056706089 POWER CORD LM-15G/C 7 DA-5056706095 POWER CORD LM-15G/U 8 BT-51010-2 WARRANTY CARD LM-15G/U 9 BT-51024-1 SARVICE CENTER LIST LM-15G/U 10 DA-5030409304 IDENTIFICATION LABEL (Large) LM-15G/E 10 DA-5030409302 IDENTIFICATION LABEL (Large) LM-15G/C 10 DA-5030409306 IDENTIFICATION LABEL (Large) LM-15G/U 11 DA-5030409305 IDENTIFICATION LABEL (Small) LM-15G/E 11 DA-5030409303 IDENTIFICATION LABEL (Small) LM-15G/C 11 DA-5030409307 IDENTIFICATION LABEL (Small) LM-15G/U

3-6 (No. 52151)

Page 38

LM-15G /U,

LM-15G /E,

LM-15G

STANDARD CIRCUIT DIAGRAMS

CONTENTS

USING P.W. BOARD ..................................................................................................................................................................... 2-1

SEMICONDUCTOR .....................................................................................................................................................................2-1

BLOCK DIAGRAM .........................................................................................................................................................................2-2

CIRCUIT DIAGRAMS................................................................................................................................................................... 2-3

POWER PWB CIRCUIT DIAGRAM ..........................................................................................................................................................2-3

MAIN PWB CIRCUIT DIAGRAM .............................................................................................................................................................. 2-5

FRONT CONTROL 1 PWB CIRCUIT DIAGRAM ................................................................................................................................... 2-17

FRONT CONTROL 2 PWB CIRCUIT DIAGRAM ................................................................................................................................... 2-17

BNC INPUT PWB CIRCUIT DIAGRAM .................................................................................................................................................. 2-17

INVERTER PWB CIRCUIT DIAGRAM .... ............................................................................................................................................... 2-19

PATTERN DIAGRAMS ............................................................................................................................................................. 2-21

POWER PWB PATTERN ...................................................................................................................................................................... 2-21

USING P.W. BOARD

POWER P.W. BOARD DA-5097613402

MAIN P.W. BOARD DA-5097620300

FRONT CONTROL1 P.W. BOARD DA-5097620400

FRONT CONTROL2 P.W. BOARD DA-5098800629

BNC INPUT P.W. BOARD DA-5098800628

INVERTER P.W. BOARD DA-5097613200

SEMICONDUCTOR SHAPES

TRANSISTOR

BOTTOM VIEW

E C

ECB

(G)(D)(S )

B OT TO M V I EW FR ON T VI EW T OP V I EW

OUT

IN OUTE

CHIP IC

BCE

FRONT VI EW

TOP VIEW

ECB

TOP VIEW

CHIP TR

(No. 52151) 2-1

Page 39

BLOCK DIAGRAM

LCD Panel

CPT XE01

Inverter

EEPROM

24LC16B

Scaler

(GM5020)

Micro

Key

Video

(SAA7118)

W78E65P

Controller

Remote

Control

Regulator

5.0V 3.3V

DC Power

12V

PWM

S.M.P.S

Controller

2-2 (No. 52151)

VGA

Video

Remote input

100~240Vac

Page 40

POWER PWB ASS'Y

DA-5097613402

MAIN PWB(3/6) P103

ISOLATEDLIVE

POWER PWB CIRCUIT DIAGRAM

CIRCUIT DIAGRAMS

No. 52151 2-3 2-4

No. 52151

Page 41

PC INPUT

MAIN PWB ASS'Y (1/6)

DA-5097620300

The schematic diagram is only for reference. Avoid replacing individual parts. Replace the entire unit only.

MAIN PWB CIRCUIT DIAGRAM (1/6)

No. 52151

2-5 2-6

No. 52151

Page 42

INVERTOR PWB P1

FRONT CONTROL 1 PWB P602

FRONT CONTROL 2 PWB P601

REMOTE

MAIN PWB ASS'Y (2/6)

DA-5097620300

The schematic diagram is only for reference. Avoid replacing individual parts. Replace the entire unit only.

MAIN PWB CIRCUIT DIAGRAM (2/6)

No. 52151 2-7 2-8

No. 52151

Page 43

POWER PWB P802

MAIN PWB ASS'Y (3/6)

DA-5097620300

The schematic diagram is only for reference. Avoid replacing individual parts. Replace the entire unit only.

MAIN PWB CIRCUIT DIAGRAM (3/6)

No. 52151

2-9 2-10

No. 52151

Page 44

LCD PANEL

MAIN PWB ASS'Y (4/6)

DA-5097620300

The schematic diagram is only for reference. Avoid replacing individual parts. Replace the entire unit only.

MAIN PWB CIRCUIT DIAGRAM (4/6)

No. 52151

2-11 2-12

No. 52151

Page 45

The schematic diagram is only for reference. Avoid replacing individual parts. Replace the entire unit only.

MAIN PWB ASS'Y (5/6)

DA-5097620300

MAIN PWB CIRCUIT DIAGRAM (5/6)

No. 52151

2-13 2-14

No. 52151

Page 46

BNC INPUT PWB JP3

MAIN PWB ASS'Y (6/6)

DA-5097620300

The schematic diagram is only for reference. Avoid replacing individual parts. Replace the entire unit only.

MAIN PWB CIRCUIT DIAGRAM (6/6)

No. 52151

2-15 2-16

No. 52151

Page 47

MAIN PWB (2/6) P002

8+&'1$8+&'1#

MAIN PWB (2/6) P002

MAIN PWB (6/6)

P001

BNC INPUT PWB ASS'Y

DA-5098800628

FRONT CONTROL2 PWB ASS'Y

DA-50988000629

FRONT CONTROL1 PWB ASS'Y

DA-5097620400

The schematic diagram is only for reference. Avoid replacing individual parts. Replace the entire unit only.

FRONT CONTROL 1 PWB, FRONT CONTROL 2 PWB, BNC INPUT PWB CIRCUIT DIAGRAMS

No. 52151

2-17 2-18

No. 52151

Page 48

MAIN PWB (2/6) P004

LCD PA NE L

INVERTER PWB ASS'Y

DA-5097613200

The schematic diagram is only for reference. Avoid replacing individual parts. Replace the entire unit only.

INVERTER PWB CIRCUIT DIAGRAM

No. 52151 2-19 2-20

No. 52151

Page 49

PATTERN DIAGRAM

POWER PWB PATTERN

()

TOP

()

No. 52151

2-21 2-22

No. 52151

JVC LM-15G Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual