Sharp LLT1510A Schematic

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SERVICE MANUAL

LCD COLOR MONITOR

MODEL LL-T1510A

CONTENTS

■ NOTES TO SERVICE PERSONNEL...................................................................................1

■ COUTIONS IN SERVICING.................................................................................................1

CHAPTER 1. OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION..............4

CHAPTER 2. REPLACING LAMPS.........................................................................................7

CHAPTER 3. CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS..................9

CHAPTER 4. TROUBLESHOOTING.....................................................................................15

CHAPTER 5. TRIMMING AND PROCESSING LEAD WIRES..............................................18

CHAPTER 6. WAVE FORM...................................................................................................19

CHAPTER 7. BLOCK DIAGRAM/UNIT TERMINALS............................................................22

CHAPTER 8. CIRCUIT DIAGRAM.........................................................................................24

CHAPTER 9. PARTS LAYOUT..............................................................................................36

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

This document has been published to be used

SHARP CORPORATION

for after sales service only. The contents are subject to change without notice.

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■Notes to service personnel

·Pictorials

This service manual and the product use a variety of pictorials in order to assure the safety of repair operations and of t he product repaired.

· If those pictorials are ignored in repairing, the following troubles might occur:

· Understand the meaning of those pictorials and read this manual carefully before trying to repair the product.

DANGER: WARNING: CAUTION:

Failure to follow the instructions in the message may cause a serious accident or death. Failure to follow the instructions in the message may cause a serious accident or death. Failure to follow the instructions in the message may cause personal injury or damage to the asset.

·Meaning of symbols ·Pictorial example

symbols mean the necessity of using caution.

symbols mean actions which are prohibited.

symbols mean actions to be required.

■Cautions in servicing

Locations which require a special caution carry safety instructions using labels and stamps on the cabinet, chassis and components. When servicing, observe the instructions on such labels and stamps.

Electrical shock Hot surface

Don’t touch Remove power plug

Electrical shock and burn

1. Prior to servicing, make sure to remove the power supply plug.

Electrical shock

2. Some parts inside the unit have a high voltage. Use caution to avoid an electri cal shock accident when servicing an energized unit.

Use specified parts

3. The component parts of this unit have safety characteristics such as flame resistance and dielectric strength.

· Use replacement parts which have the same characteristics as those of the components parts used for this unit.

· In particular, component parts marked with ! in t he circuit drawing parts list are important for maintaining the safety of the

product. Make sure to use specified replacement parts.

Reinstall component parts in their original locations and return wires which have been rerouted for servicing purposes to their original positions.

4. Some component parts use insulating materials such as tubes or tape for safety purposes, or are mounted, a bi t floated, on the printed wiring board.

· When rerouting inside wiring or clamping the wires, use caution not to bring the wires too close to heating or high-voltage parts.

· Make sure to return inside wiring to their original locations.

Check for safety after servicing.

5. After finishing servicing, check whether the screws, parts, wires which have been removed for servicing are reinstalled properly. In addition, check to see if you have not deteriorated parts around the part you serviced, and also check for insulation between each of the attachment plug terminals and the external metal section.

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·Cautions to be taken when making adjustments

WARNING CAUTION

1. Use caution to avoid shorts due to the probe of an oscilloscope or jigs and do not touch highvoltage circuits directly. (There is fear of causing a fire or your getting an electric short accident)

·Cautions to be taken when replacing electrical parts

WARNING CAUTION

1. Parts marked with are important for maintaining the safety of the product. Use specified parts when replacemzent of such parts is required. (There is fear of giving off smoke, catching fire, or your getting an electric shock)

·Cautions to be taken when soldering

WARNING

1. Do not try to solder when the parts are energized or the unit is turned on. (There is fear of causing fire or your getting an electric shock.)

2. Use caution not to touch heating parts like the radiating plate directly. (You could get a burn.)

2. Use caution not to damage t he LCD unit when handling it.

2. Use caution not to damage peripheral parts and lead wires (e.g., burning peeling of coating). (There is fear of causing a fire or your getting an electric shock accident.)

CAUTION

1. Use caution not to touch a soldering iron directly. (You could get a burn.)

3. Use caution not to have the wrong direction when installing parts, if they need the installation of a correct direction. (There is fear of causing a fire.)

5. Some parts need to be installed at a specified intervals or by a specified method for safety purposes (they may be a bit floated from the board for dissipating heat.). They must be reinstalled to the original conditions. (There is fear of causing a fire or your getting an electrical shock accident.)

2. Make sure the radiating plate or heating parts are cool enough not to get a burn before touching such a part. (You could get a burn.)

4. Use caution to avoid shorts due to an improperly cut length of parts’ lead legs after soldering and exercise care not to cut your finger with the edge of cut surface. (There is fear of causing a fire or your getting an injury.

6. Use caution to solder in a correct manner so that areas other than the part you want to solder are contaminated with solder, like a solder ball or bridge.

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·Cautions to be taken when disassembling or reassembling the unit

WARNING

1. Prior to servicing, make sure to remove the power supply plug. (You could get an electrical shock accident.)

3. Before servicing, make sure you know the locations of high-voltage parts. (You could get an electrical shock accident.)

CAUTION

1. When disassembling or reassembling the unit, make sure to put the front cabinet side (LCD uni t side) downward and carry out work using caution not to get your fingers caught. (Since the LCD unit side is heavier, there is fear of your getting an injury due to tipping or falling.)

3. When disassembling the unit, use caution not to get a burn because radiating plates and areas around lamps on the PWB are hot immediately after unplugging. (You could get a burn.)

5. Pay attention to burrs or edges of the resin (cabinet and PWBs) and metal (chassis and others) parts. (You could cut your finger with them.)

2. Use caution not to touch the inside of the product with a wet hand or foot. (You could get an electrical shock accident.)

4. Do not work on an unstable place or with t he stand put upright. In particular, fix the cabinet before replacing PWBs or fan. (There is fear of your getting an injury due to tipping or falling.

2. Use caution to avoid a reaction due to your applying too much force when removing or reinstalling screws. (You could get an injury.)

4. Use caution not to get you fingers caught in the stand pole, between the stand and angles or under the cabinet. (You could get an injury.)

6. Use caution to the deformation of the grounding spring or the displacement of the ferrite core. (There is fear of causing radio noises to other equipment.)

·Cautions to be taken when replacing fluorescent lamp

CAUTION

1. Make sure the fluorescent lamp is cool enough not to get a burn before you are going to touch the lamp or areas around it. (You could get a burn.)

3. Use caution not to break the fluorescent lamp when handling it. (You could get an injury.)

2. Use caution to avoid a reaction due to your applying too much force when removing the connector. (You could get an injury.)

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CHAPTER 1. OUTLINE OF THE PRODUCT, NOMENCLATURE AND

FUNCTIONS

[1] Features

· 38 cm [15 type] 1024-dots x RGB x 768-line Anti-Glare and Low-

Refrection TFT color LCD panel

· 200 cd/m

high-luminance design

· Connectable to analog RGB output (for CRT)

Multi display mode function that supports resolutions from 640-dot x RGB x 400-line to up to 1024-dot x RGB x 768-line In modes lower than 800 x 600 dots, it is possible to enlarge the screen that offers smooth and excellent visibility. Supports VESA specification, Power Macintosh etc.

· Up to 16,190,000 colors are displayable

· Automatic screen adjustment

· The display timing and RGB gain can be more finely adjusted due

to the OSD guide function, in addition to the automatic adjustment function.

· Power management function

· Supports Plug&Play (VESA:DDC1, DDC2B specifications)

[2] Safe servicing and safe inspection,

1. Observe the cautions.

Locations which require a special caution carry safety instructions using labels and stamps on the cabinet, chassis and components. When servicing, observe the instructions on such labels and stamps as well as those in the Instruction manual.

2. Exercise care not to get an electrical shock accident.

Some parts have a high voltage inside the unit. Use caution when handling them while they are energized.

3. Use specified parts.

The component parts of this unit have safety characteristics such as flame resistance and dielectric strength. Use replacement parts which have the same characteristics as those of the components parts used for this unit. In particular, component parts marked with ! in the circuit drawing parts list are important for maintaining the safety of the product. Make sure to use specified replacement parts.

4. Reinstall component parts in their original locations and return wires which have been rerouted for servicing purposes to their original positions.

Some component parts use insulating materials such as tubes or tape for safety purposes, or are mounted, a bit floated, on the printed wiring board. When rerouting inside wiring or clamping the wires, use caution not to bring the wires too close to heating or high-voltage parts. Make sure to return inside wiring to their original locations.

5. Check for safety after servicing.

After finishing servicing, check whether the screws, parts, wires which have been removed for servicing are reinstalled properly. In addition, check to see if you have not det eriorated parts around the part you serviced, and also check for insulation between each of the attachment plug terminals and the external metal section.

[3] Specifications

1. General specifications

Name of the product: LCD color monitor

Item Specifications

LCD display device 38 cm [15 type] super V & low reflective

black TFT liquid crystal Picture element pitch 0.297 mm (horizontal) x 0.297 mm (vertical) Display area 304.1 mm (horizontal) x 228.1 mm (vertical) Number of picture

elements Display color 16,190,000 colors (max.) Input vide signal Analog RGB (0.7 Vp-p/75W) Input synchronizing

signal Input terminal 15-pin mini D-sub connector Plug&Play VESA DDC1/DDC2B Power management

function Working temperature 5 ~ 35°C Power supply D C+12 V, 100 AC 50/60Hz (when the

Power consumption 22 W (when USB hub is used) /max. 30 W

Outer dimensions about 362 mm (width) x 185 mm (depth) x

Weight approx. 5.2 kg Accessories AC power supply cord (1), Instruction

· Specifications and a part of the appearance are subject to change

without notice.

1024 x RGB x 768 dots

Horizontal synchronizing signal TTL level

Compatible with VESA DPMS

adapter is used)

(when USB hub is used)

343 mm (height)

manual (1), warranty (1), adjustment disk

(1), USB cable (1)

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2. Technical specifications

Item MIN TYP MAX Unit Power supply voltage AC 90 100 110 V Working temperature range +5 — +35 °C Storing temperature range -20 — +60 °C Humidity range 20 — 85 %RH Visual angle range Vertical (CR

Horizontal (CR Contrast ratio(CR) (q = 0°) 200 300 — — Response speed Leading (tr) — 10 25 ms

Trailing (td) — 35 50 ms Screen white chromaticity (X) 0.283 0.313 0.343 —

(Y) 0.299 0.329 0.359 — White surface luminance (Y

) 150 200 — cd/m

Module model number LQ150X1DR10

Specifications and a part of the appearance are subject to change without notice.

[Power management]

This unit supports DPMS*1 Energy Star*2. To use the power management function of this unit, t he video card

and the computer must be compatible with the DPMS specifications.

*1 DPMS:Display Power Management Signaling

5) +40 ~ -50 +60 ~ -60 — Temperature

5) 60 70 — Temperature

DPMS mode Screen condition Power consumption Horizontal synchronization Vertical synchronization ONSTATE Displayed state approx. 22 W * Yes Yes STANDBY SUSPEND Yes No

No display approx. 3 W

No Yes

OFFSTATE No No

At the time of the USB hub un- use

*2 Energy Star: We are a partner company of the International

Energy Star Program. We judges that this product conforms to the guidelines of the International Energy Star program.

The International Energy Star program is a guideline introduced by the Environmental Protection Agency that promotes energy savings of office equipment including computers. It aims at promoting the development and use of products with a function that suppresses energy consumption efficiently. Companies can participate voluntarily in this program at their own discretion. The products that are allowed to participate in this program are office equipment including computers, displays, printers, facsimile and copiers, and the same criteria and marking (logo) are used among partner countries.

[DDC*3(Plug & Play)]

This unit supports VESA’s DDC specifications

This monitor supports VESA DDC* The DDC is a signal standard for ensuring plug&play function between the monitor and personal computer and sends and receives information on resolution and others between the monitor and personal computer. Plug&Play function can be used only when the computer supports DDC and is configured to detect a plug&play monitor. Some DDC types are available according to different communication protocols. This monitor supports DDC1 and DDC2B.

Display Data Channel

standard.

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[4] Nomenclature and functions

[Front part]

This button is used to pop up, select and close the OSD menus.

SELECT

This button is used to select the OSD options.

These buttons are used to:

1) Adjust the value of the selected OSD option;

2) Adjust the brightness of the backlight while the OSD menus is not displayed.

Panel Power Button

This turns the panel power ON or OFF.

Power LED

This indicator illuminates when the power is turned on.

[Side part]

Main Power Switch

This turns the monitorÕs main power ON or OFF.

Connector Cover

USB Downstream Ports

These ports are for connecting the USB devices.

[Rear part]

Stand Cover

USB Upstream Port

This port is for connecting a USB downstream connector on your PC or a USB hub.

Back Cover

Power Connector

This is for connecting the power cable.

Signal Cable

This is for connecting the monitor to the VGA connector of the video source (PC).

Lock Anchor

This is an anchor hole for Kensington type security lock.

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CHAPTER 2. REPLACING LAMPS (Removing LCD module)

[1] Replacing lamps

· After removing the LCD module from the unit according to 2. Re-

moving the LCD module, replace the lamp units.

· Replace the lamp units using the following replacement procedure,

referring to Fig.1 (enlarged view) and Fig. 2 (overall view).

· There are two lamp units at the top and bottom of the LCD

module.

· Wear finger sacks when doing this work, not to contaminate or

damage the LCD panel. Use caution prevent the entrance of dirt or dust into the module.

[Replacement proce d u re]

Turn the module over and remove the screws A in Figs. 1. (1 screw for each unit). Put a finger on the concave B and remove the lamp unit in a straight line.

· Use caution not to apply undue force on the lamp.

Replace the lamp unit with a new one. Reinstall in the reverse order of disassembly.

· Tighten the screw and make sure the lamp unit won’t move.

Drawing direction

Screw A

Fluorescent lamp lead wire

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[2] Removing LCD module

Procedure

Disassembly

1. Remove the 2 screws in cabinet).

· A connector is removed so that stress may not be applied to

the control circuit board cable when a front cabinet is removed.

· Use caution not to break the latches in when removing the

front cabinet.

and remove the display mask (front

2. Remove the 8 screws in

and remove the module.

· Use caution not to drop the LCD module.

3. Remove the 2 screws in from the module.

Reassembly

Reassemble the LCD module using the steps from 1 to 3 in reverse.

and remove the LCD cable connector

· Use caution not to get the cables caught in the cabinet when

reassembling.

Front cabinet

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Upper fluorescent lamp lead wire

Screw A (upper)

CN2

Lower fluorescent lamp lead wire

Screw A (lower)

Fig. 2

Cover

CN1

Cover

Tape

LCD module : VVLQ150X1DR10 Lamp umit : DUNTH2162TPZZ

CHAPTER 3. CONNECTION, ADJUSTMENT, OPERATION AND FUNCTIONS

[1] CONNECTING POWER SUPPLY AND

COMPUTER

· Make sure both the LCD monitor and computer are OFF.

Connect the signal cable to the analog output terminal of the computer. Make sure to tighten the connector screws of the cable.

Connect the power supply cable to the wall outlet. Turn on the main power switch of the monit or and then turn on the

computer power switch. When the monitor power switch is turned on, the green power-on

lamp comes on and the screen appears. Adjust the screen

Automatic screen adjustment

After using the monitor, turn off the main power switch.

Rear view

To the computer

[CAUTION]

· When removing the power cable, make sure that both the com-

puter and the monitor are OFF and hold the connector, but not the cable.

· When you are going to connect the monitor to a Power Macintosh

machine, you might need to a commercial Macintosh conversion adapter.

To the AC outlet

Power cord

Signal cable

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cccccccccccccccccccccccccccccccccccccccccccccccccccc @ZapfDingbats, Sffont, RingWorld3

[2] CONNECTING USB CABLE

Rear view

USB Downstream ports

[3] ADJUSTMENT

3-1. AUTOMATIC SCREEN ADJUSTMENT

When the monitor is set up for the first time or when the system setting is changed, make automatic screen adjustment. "CLOCK", "PHASE" and "V-POs" are automatically adjusted to optimal values. When making automatic screen adjustment, make sure that the entire screen is bright.

Carry out automatic screen adjustment as follows:

Press the MENU button once. The [MENU1 ] appears on screen. Select MANUAL on the [ADJUSTMENT] screen. Press the button to select AUTO.

The screen becomes dark and A few seconds later, the screen becomes bright again and the MENU 1 appears on screen.

Menu 1

ACCD

[]

H V

ADJUSTING appears on screen.

U U

AA A

LOO

PPS

OPS-

LMMN

0 0

3 2

] ] ] ]

STTT

4678

HV60: Hz 8 Hzk:4

] ] ] ]

Upstream port

USB

This monitor comes equipped with a hub that supports USB standard. The USB hub needs the following conditions:

· The computer to which the USB hub is connected and its OS are

compatible with USB standard.

· Or, the USB hub to which this USB hub is connected is also

connected to a USB-compatible computer (and OS).

When connecting any USB device to this monitor, use the USB cable supplied with the monitor and observe the following conditions:

Connect the down-stream of a USB-compatible computer (or other USB hub) with the up-stream of this monitor using the USB cable.

Connect the USB-compatible peripheral device to the USB down-

stream of the monitor. [CAUTION] Some USB peripheral devices might function properly depending

upon the type of computer, OS or peripheral equipment. For whether the device you want to connect is USB compatible or not, consult the manufacturer of the device.

The USB device connected to the USB connector of the monitor operates when the main power supply is ON, even if the monitor is in the power save mode or if the power switch on the front part of the monitor is OFF.

USB-related specifications

USB standard Rev. 1.0 complicd self-powered hub Down-stream supply power 500 mA for each port (MAX.) USB port Up-stream x 1 (rear part), down-

stream x 2 (side part)

Menu 1

[]

LOO H

E LMMN

U U

AA A

PPS

0 0 0

OPS-

4678

5 1 98 3

]

] ]

] ] ] ]

STTT

ACCD

HV60: Hz 8 Hzk:4

ADJUSTING

appears

Menu screen appears again.

The automatic screen adjustment has been thus completed. Usually, you can use the monitor properly after carrying out automatic

screen adjustment . However, if you feel it necessary to fine-tune the screen, use the adjustment diskette supplied with the monitor and adjust the screen manually.

For the procedure for adjusting the screen manually, refer to the Fine adjustment of the screen.

[CAUTION]

· If the entire screen is extremely dark, you might not be able to

perform automatic screen adjustment in some modes. In such a case, the message

OUT OF ADJUST appears on screen, and the settings remain unchanged. Use the adjustment diskette supplied with the monitor or switch the screen so that the entire screen looks bright and perform automatic screen adjustment again.

· If the video signal from the computer is the composite sync or

sync-on-green, the screen might be adjusted properly after carrying out automatic screen adjustment. In such a case, fine adjust the screen manually.

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3-2. MANUAL SCREEN ADJUSTMENT

If fine adjustment of the screen is necessary, use the adjustment diskette (for Windows) supplied with the monitor t o adjust the screen manually. If you want to fine adjust computers whose OS is other than Windows, follow the instructions on the screen.

1. OUTLINE OF ADJUSTMENT

Every time the MENU button is pressed, the screen is switched over as follows:

Menu 1 (ADJUSTMENT)

Menu 2 (GAIN CONTROL)

Menu 3 (WHITE BALANCE)

Menu 4 (MODE SELECT)

Menu is deleted.

It changes.

On all the MENU screens, the resolution of the input signal, vertical synchronizing frequency (V), horizontal synchronizing frequency (H) appear at the lower part of the screen in rough values.

The values of "R-CON, G-CONT. B-CON" on the MENU 3 screen are indicated only when "WHITE BALANCE" is in the USER.

On the MENU 4 screen, you can select menu options, but the display status might not change, depending upon the resolution of the input signal.

Menu 1

ACCD

[]

LOO H

H V

Menu 2

GAI

[]

ROI O

Menu 3

WORH-I

[]

CBO

-C G B

124 6780x

Menu 4

[]

SRD 0

GIH EMDUIM OLWH

124 6780x

Select the menu option you want to adjust, using the SELECT button. Every time the button is pressed, the highlight moves downward.

Adjust or switch over using or button.

AA A

LMMN

U U

1 98

PPS

4678

N LCR 4678

C C-ON

0 A4P

0 0

OPS-

HV60: Hz 8 Hzk:4

CROL

AA A

LMON

U U

HV60: Hz 8 Hzk:4

•OR

• WA

SDT

HV60: Hz 8 Hzk:4

SLETCE

H-SO

POD

OPTIS

V-

] ] ] ]

] ]

62 0K 16M

I SNOI

NOI 046027

SES

HV60: Hz

8Hzk:4

O T

ESR

Menu is deleted.

] ] ] ]

] ]

[CAUTION]

If the button operation is suspended for about 15 seconds during adjustment, the menu on screen will disappears.

Screen adjustment needs to be performed whenever the screen mode (resolution, refresh rate and others) has been changed. The adjustment results are automatically stored in memory and effect ive after the power is turned off. Therefore, once the screen is adjusted properly, there is no need to adjust the screen every time you use the monitor.

2. HOW TO USE ADJUSTMENT PROGRAM

The following explanation is written on the assumption that the OS is Windows 95/98. In addition, the floppy disk drive is assumed to be drive A.

START

Insert the "Adjustment diskette" supplied with the monitor into drive A.

Open "3.5" FD (A:)" in the "My computer". (In the case of Windows 3.1, open the "File manager" and select drive A.

Double click "Adj_Uty.exe" to start the adjustment program.

ADJUSTMENT

The adjustment pattern as shown on the right sketch appears on screen and adjust, following the instructions on the screen.

END

When the adjustment is completed, press ESC key on the keyboard to exit the adjustment program.

Color pattern

Display frame

White and black lines alternate.

[CAUTION] If your computers display mode is 65000 colors, the gradation of each

color of the color pattern might look different or gray scales look tinted. It is not a problem, but due to the specification of the input signal.

3. ADJUSTMENT ITEMS

[MENU 1] ADJUSTMENT

Adjust "CLOCK", 2PHASE", "H-POs" and V-POs".

ACCD

[]

LOO

PPS

4678

MANUAL: Adjust manually. (Select the adjustment item you want

to adjust using the SELECT button.)

AUTO: The automatic screen adjustment function works t o ad-

just "CLOCK", "PHASE", "H-POs" and "V-POs" automatically to optimal values. During the adjustment, the screen becomes dark and indicates ADJUSTING.

STTT

AA A

LMMN

U U

S OPS-

0 0

HV60: Hz 8 Hzk:4

] ] ] ]

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CLOCK

Adjust the pattern that white and black lines alternate so that there is a noise (vertical stripe), using

Horizontal stripes-like noise

or button.

PHASE

Adjust the pattern that white and black lines alternate so that the horizontal stripe noise is reduced to minimum and that the white and black pattern looks clear, using the

Horizontal stripes-like noise

or button.

H-POS

You can move the screen to the right by pressing the to the left by pressing the

button. Adjust the horizontal position

button and

of the screen so that both the right and left frame lines of the pattern appear on screen.

V-POS

You can move the screen upward by pressing the downward by pressing the

button. Adjust the vertical position of

button and

the screen so that both the top and bottom frame lines of the pattern appear on screen.

Make sure to adjust "CLOCK" properly before proceeding with the adjustment of "PHASE".

MANUAL: Adjust manually. (Select adjustment options using the

SELECT button.)

AUTO: The auto gain control function works to adjust the bright-

ness and contrast automatically to optimal values.

The auto gain control function adjust the brightness and contrast based on the brightest color being displayed on the screen. If you use this function without displaying the adjustment pattern on screen, at least a 5 mm x 5 m m white area needs to be displayed on screen. If not, you might not be able to make the adjustment. I n such a case, the message

OUT OF ADJUST appears on screen

and the settings remain unchanged.

Color pattern

To execute the auto gain control function, set to the "COOL, STD, WARM" mode on the "MENU 3. WHITE BALANCE" screen. If the monitor is in the USER mode, the auto gain control won’t work.

BRIGHT (brightness)

Adjust the brightness of the entire screen. The screen becomes brighter by pressing pressing the

button.

button and darker by

You can also adjust the brightness of the light source (backlight) of the LCD monitor. For more information, see "Adjusting backlight brightness."

CONT (contrast)

Adjust the contrast on the color pattern screen on the adjustment program so that all gradations can be displayed. The contrast becomes stronger by pressing the ing the

button.

button and weaker by press-

COLOR (number of displayable colors)

Set the maximum displayable colors (1,6190,000 colors or 260,000 colors)

[MENU 3] WHITE BALANCE

Adjust the color of the screen. The monitor is factory adjusted properly about the color of the screen, and thus there is not necessary to adjust it . If adjustment of the whi te balance is required for any reason, select the adjustment options using the SELECT button and adjust it.

SDT

T T T

• WA

ESR

WORH-I

[]

CBO

-C G B

•

C C-ON

[MENU 2] GAIN CONTROL

Adjust the brightness and contrast of the screen. The monitor is factory adjusted properly. However, it might need to be adjusted depending upon the type of computer to which the monitor is connected. Adjust the brightness and contrast, observing the color pattern of the adjustment program.

GAI

[]

ROI

LCR

4678

CROL

AA A

LMON

U U

HV60: Hz 8 Hzk:4

O T

] ]

62 0K 16M

] ]

124 6780x

HV60: Hz 8 Hzk:4

COOL - STD - WARM

You can select the color you want from among the 5 preset modes.

COOL : Bluish than the standard setting.

■

: A little bluish than the standard setting.

STD : Standard setting

■

: A little reddish than the standard setting

WARM : Reddish than the standard setting

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USER

You can adjust the color of the screen more finely, using R-CONT, G-CONT, and B.CONT.

R-CONT: The

G-CONT: The

B-CONT: The

When the mode is set to "COOL" or "WARM", you cannot display all gradations. If you want to display all gradations, set the mode to "STD."

[MENU 4] MODE SELECT

Select the adjustment option you want to adj ust using the SELECT button and adjust each mode of the monitor.

OSD H-POSITION (OSD screen horizontal position)

Adjust the horizontal position (lateral direction) of the adjustment menu on the screen. You can move the menu to the right by pressing the to the left by pressing the

OSD V-POSITION (OSD screen vertical position)

Adjust the vertical position (vertical direction) of the adjustment menu on the screen. You can move the menu upward by pressing the downward by pressing the

400LINE (resolution)

Adjust the horizontal resolution of t he 400-line screen for the PC9800 series or US TEXT.

[640] : 640 x 400 dot mode [720] : 720 x 400 dot mode (for US TEXT and others)

SHARPNESS: (enlarged correction level)

The screen whose display mode is less than 1024 x 768 dots appears in an enlarged size (1. Corresponding signal timing) You can select the sharpness of an enlarged image from three levels (HIGH, MEDIUM, LOW).

button makes the color of the screen more reddish; the blue-greenish.

ish; the purplish.

the lowish.

[]

124 6780x

button makes the color of the screen more

button makes the color of the screen more green-

button makes the color of the screen more

button makes the color of the screen more bluish;

button makes the color of the screen more yel-

SLETCE

H-SO

POD

I SNOI

S GIH EMD UIMOLWH

SRD 0 H

0 A4P

OPTIS

V-

button.

NOI 046027

SES

HV60: Hz

8Hzk:4

button and

4. Adjusting backlight brightness

When the or button is pressed with no adjustment menu displayed on screen, the BRIGHT menu appears on screen. You can adjust the brightness of the backlight on this menu.

The

button makes the backlight brighter and the button makes it

darker.

5. ALL RESET

You can return all the settings to the fact ory settings using the procedure given below.

Turn off the power of the monitor using the power button on its

front. Press and hold the MENU and SELECT buttons, press the power

button on the front of the monitor to turn it on. The message ALL RESET appears on screen and the monitor

is reset. Note: While

ALL RESET appears on screen, any button opera-

tion is invalid.

6. Adjustment lock function

To protect the settings and adjusted values from the wrong operation, set the adjustment lock. If the adjustment lock is activated, no menu screen won’t appear on screen so that you cannot set or change the settings.

Adjustment lock ON: Press and hold the MENU button and turn

on the power button on the front of the monitor.

Adjustment lock OFF:Turn off the power button on the front of the

monitor. Press and hold the MENU button, turn on the power button on the f ront of the monitor.

When the adjustment lock is ON, you cannot carry out any button operation without the power button.

3-3. APPLICABLE SIGNAL TIMING

Display mode Horizontal

VESA (IBM AT compatible machines)

US TEXT

Power Macintosh

All signal timings are applicable for non-interlace only.

The frequencies for Power Macintosh are reference values. When you want to connect this monitor to Power Macintosh, you might need to use a commercial Macintosh conversion adapter.

[CAUTION]

640 x 400 31.5kHz 70Hz 25MHz 640 x 480 31.5kHz 60Hz 25. 175MHz

800 x 600 35.1kHz 56Hz 36.0MHz

1024 x 768 48.4kHz 60Hz 65.0MHz

720 x 400 31.5kHz 70Hz 28.3MHz

640 x 480 35.0kHz 67Hz 30.5MHz 832 x 624 49.7kHz 74.6Hz 57.3MHz

1024 x 768 60.2kHz 75Hz 80.0MHz

frequency

37.9kHz 72Hz 31.5MHz

37.5kHz 75Hz 31.5MHz

37.9kHz 60Hz 40.0MHz

48.1kHz 72Hz 50.0MHz

46.9kHz 75Hz 49.5MHz

56.5kHz 70Hz 75.0MHz

60.0kHz 75Hz 78.75MHz

Vertical

frequency

Dot

frequency

· If any signal timing not applicable to thi s monitor is inputted, the

message

onds before the screen becomes blank. If this is the case, set the monitor t o one of the applicable signal timings, referring to the Instruction Manual of your computer.

OUT OF TIMING appears on screen for about 5 sec-

· If no signal (synchronizing signal) is inputted to this monitor, the

message

and then the screen becomes blank.

NO SIGNAL appears on screen for about 5 seconds

Page 15

3-4. CONNECTOR PIN LAYOUT

Mini D-sub connector, 15 pins

Input connector

Pin No. Function

1 Red video signal input 2 Green video signal input 3 Blue video signal input 4GND 5GND 6 GND for red video signal 7 GND for green video signal 8 GND for blue video signal

9N.C. 10 GND for synchronizing signal 11 GND 12 DDC data 13 Horizontal synchronizing signal input 14 Vertical synchronizing signal input 15 DDC clock

Page 16

CHAPTER 4. TROUBLESHOOTING (for checking PWBs)

Make sure that the following accessory cables are connected properly. In addition, make sure that the video mode of the personal computer is properly set to the signal timing supported by this machine.

ACCESSORY CABLES

· Power cable

· USB cable

Check for defective parts in the following manner.

Does the light of the LED change from orange to green when pressing the power-on switch?

Yes

Remove the RGB cable. Does LED

come on in orange after for a while?

Yes

Connect the RGB cable. Does the backlight come on?

Yes

Does the screen display normally in each video mode?

Yes

Do the USB units operate normally? (5) See <USB error>.

Yes

No error

(1) <An error occurs when detecting the synchronizing signal>

Is DC+12V outputted from the power supply unit?

Yes

Is B13 at DC+12V?

Yes

Is the signal input of the 5th pin of the U17 at low level (0V)?

Yes

Is the 4th pin of the U17 at DC+15V?

Yes

Is the signal input of the 11th pin of the U10 at low level (0V)?

Yes

Is the signal input of the 22nd pin of the U10 normal? (See Waveform diagram 1.)

Yes

Is the signal input of the 4th pin of the U16 at low level (0 V)?

Yes

Is the 8th pin of the U16 at DC+12V?

Yes

Is the signal input of the 17th pin of the U10 normal? (See Waveform diagrams 2, 3.)

Yes

Is the signal output of the 27th pin of the U10 at low level (0 V)?

Yes

Is the signal output of the 42nd pin of the U10 at high level (DC+5V)?

Yes

Check the operation PWB and related parts (LED and cables).

(1) See <An error occurs when detecting the synchronizing signal.>

(2) See <An error occurs when using the Power Save mode>

(3) See <Backlight goes out improperly>.

(4) See <Screen error>

Check the power supply unit and fuses (power supply unit).

Check the DC+12V power line (12V), and the power supply circuit for the fuse F1.

Check the power supply circuit for the operation PWB (operation PWB and cables) and that for the U17.

Check the DC+15V power supply line (5Va) and the power supply circuit for the U17.

Check the REST circuit for the U10.

Check the clock circuit for the U10 and X1.

Check the power supply circuit for the operation PWB (operation PWB and cables) and that for the U16.

Check the DC+12V power line (12 Va) and the power supply circuit for the U16.

Check the signal cable and the synchronizing signal processing circuit for the U10 and U21.

Check the microprocessor control circuit for the U10.

Page 17

(2) <An error occurs when using Power Save mode>

Is the signal input of the 42nd pin of the U10 at low level (0 V)?

Yes

Check the operation PWB and related parts (LED and cables).

(3) <Backlight goes out improperly>

Is the 5th pin of the JP2 at DC+12V?

Yes

Is the signal input of the 26th pin of the U10 at low level (0 V)?

Yes

Is the 1st pin of the JP2 at DC+5V?

Yes

Is the 26th pin of the U17 at 0 V when the backlight luminance is at the maximum (OSD BRIGHT31)?

Yes

Is the 3rd pin of the JP2 at 0 V when the backlight luminance is at the maximum (OSD BRIGHT31)?

Yes

Are the 1st pins of the inverter PWB units CN2 and 3 at about 1500 Vrms? (Use due caution not to get an electric shock accident. For measuring the voltage, use a high-voltage probe of more than 100:1. )

Yes

Check the lamp inside the LCD module.

Check the microprocessor control circuit for the U10.

Check the CD+12V power line (12 V) and the power supply circuit for the JP2.

Check the microprocessor control circuit for the U10.

Check the DC+5V power line (5 Va) and the power supply circuit for the U17.

Check the operation PWB (operation PWB and cables) and the microprocessor control circuit for the U10 and U17.

Check the backlight control circuit for the JP2.

Check the inverter PWB unit.

(5) <USB error>

Is DC+12 V outputted from the power supply unit?

Yes

Replace the USB unit with a new one.

Check the power supply unit and fuses (power supply unit).

Page 18

(4) <Screen error>

Is the signal output of the 25th pin of the U10 at low level (0 V)?

Yes

It the 8th pin of the U18 at DC+5V?

Yes

Is the signal output of the 1st pin of the U12 at high level (Cd+5 V)?

Yes

Is the 2nd pin of the U14 at CD+3.3 V?

Yes

Does the entire screen of the LCD remain white?

Yes

Check the microprocessor control circuit for the U10.

Check the DC+5 V power supply line (% Vb) and power supply circuit for the U18.

Check the power supply control circuit for the U12.

Check the DC+3.3 V power supply line (3.3 Vb) and the power supply circuit for the U14.

Are the signal outputs of the 9th and 14th pins of the JP4(See Waveform diagrams 4 and 5.)

Check the LCD connector and LCD module.

Check the LCD control signal circuit for the U1 and U3.

Does the entire screen of the LCD remain black?

Is the size of the LCD screen abnormal?

Does the LCD screen jolt or flicker?

Do the colors of the LCD screen abnormal?

Yes

Check the LCD control signal circuit for the U1 and U3.

Are the adjustment items, ADJUSTMENT, MODE, and SELECT, properly set?

Are the output signals of the 15th pin of the U5 and the 8th pin of the U2 normal? (See Waveform diagrams 6 and 7.)

Check the LCD control signal circuit for the U1 and U3.

Are the adjustment items ADJUSTMENT, MODE, and SELECT set properly?

Check the PLL circuits for the U2, U4, U5, U6, U10, and U11.

Are the adjustment items GAIN, CONTROL, and WHITE BALANCE properly set?

Are the analog color signal outputs of the 29th pin, 32nd pin, and 35th pin of the U properly set? (See Waveform diagram 8.)

Is the digital color signal output of the U2 normal? (See Waveform diagram 9.)

Adjust and set the adjustment items properly, following the screen adjustment procedure.

Check the PLL circuits for the U2, U4, U5, U6, U10, and U11.

Adjust and set the adjustment items properly, following the screen adjustment procedure.

Adjust or set the adjustment items, following the screen adjustment procedure.

Check the video amplifier circuit for the U7.

Check the AD conversion circuit for the U2.

Is the OSD display of the LCD screen abnormal?

Is the LCD screen normal at the time of composite sync or sync-on green?

Yes

Are the settings of the display screen adjustments properly stored in memory?

Yes

The LCD unit is normal.

Yes

Is the digital color signal input and output of the U1 normal? (See Waveform 10.)

Check the LCD connector and LCD module.

Are the signal outputs of the 13th pin, 14th pin and 15th pin of the U8 normal? (See Waveform diagram 11.)

Check the color signal processing circuit for the U1 and U3.

Check the synchronizing signal processing circuit for the U7, U19, U21, U22 and U23.

Check the memory circuit for the U10 and u11.

Check the color signal processing circuit for the U1 and U3.

Check the OSD display circuit for the U8, U10, and U11.

Page 19

CHAPTER 5. TRIMMING AND PROCESSING LEAD WIRES

Step 1

Put the CCFT cable and LCD cable into shield plate bushi ngs to prevent them from getting caught when installing the shield plate. (Figs. 1 and 2)

Put the CCFT cable at the back of t he LCD module to prevent it from getting caught when installing the LCD module.

CCFT cable

Power supply cable

Switch cable

LCD cable

Fig. 1 Fig. 2

Step 2

When installing the hinge cover, use caution not to get the power cable and the LCD cable caught in the cover. (Fig. 3)

Fig. 3

Power supply cable

LCD cable

Page 20

CHAPTER 6. WAVE FORM

Waveform measurement condition: Input each of the display patterns and measure the waveform (timing chart).

Wave-form

No.

1 22nd pin of the U10 X1 Arbitrary 2 17th pin of the U10 TO_MCU_V Arbitrary 3 15th pin of the U10 TO_MCU_H Arbitrary 4 8th pin of the JP4 CLK Arbitrary 5 14th pin of the JP4 BDE_OUT Arbitrary 6 15 pin of the U5 DS Arbitrary 7 8th pin of the U2 CLKOUT Arbitrary 8 29th pin, 32nd pin, and 35th pin of the U7 PRE-Amp RGB OUT 16 monochromatic gradation patterns 9 52nd ~ 59th pins and 62nd ~ 89th pins of (R) of the U2

32nd ~ 39th pins and 42nd ~ 49th pins of the (G) of the U2 12th ~ 19th pins and 22nd ~ 29th pins of (B) of the U2

10 53rd ~ 59th pins, 63rd ~ 69th pins, and 73rd ~ 79th pins, 83rd ~

89th pins, 93rd ~ 99th pins, and 103rd and 109th pins of the U1

11 13th, 14th, and 15th pins of the U8 OSD COLOR DATA Black pattern on e ntire screen OSD menu

Measurement point Name of waveform Display pattern

A/D OUT DATA Monochrome pattern at every 2 lines

ASIC OUT DATA Monochrome pattern at every 2 lines

display

CAUTION

(1) Use the probe TektronixP6139A. (2) Reception mode: VESA 1024 x 768 H:60.024 Khz

V:75.075 Hz DOTCLK: 78.750MHz Oscilloscope : Tektronix TDS744A Input signal : VESA1024 x 768

H: 60.02 kHz V: 75.075 Hz DOTCLK: 78.750 MHz

WAVE FORM 1 : X1(22th pin of the U10.)

Frequency : 8.000MHz Display screen : arbitrary

WAVE FORM 2 : TO_MCU_V(17th pin of the U10.)

Frequency : 75MHz Display screen : arbitrary

Page 21

WAVE FORM 3 : TO_MCU_H(15th pin of the U10.)

Frequency : 60 KHz Display screen : arbitrary

WAVE FORM 6 : DS(15th pin of the U5.)

Frequency : 60 KHz Display screen : arbitrary

WAVE FORM 4 : CLK(8th pin of the JP4.)

Frequency : 35 MHz Display screen : arbitrary

WAVE FORM 5 : BDE_OUT(14th pin of the JP4.)

Frequency : 60 KHz Display screen : arbitrary

WAVE FORM 7 : CLKOUT(8th pin of the U2.)

Frequency : 40 MHz Display screen : arbitrary

WAVE FORM 8 : PRE-Amp RGB_OUT

(29th pin ,32dn pin, 35th pin of the U7.) Display screen : monochrome 16 pattern

Page 22

WAVE FORM 9 : A/D OUT DATA

(52nd~59th pins and 62nd~69th pins of the U2 (R) 32nd~39th pins and 42nd~49th pins of the U2 (G), 12th~19th pins and 22nd~29th pins of the U2 (B))

Display screen : monochrome pattern at every 2

Enlargement

WAVE FORM 11 :CSD COLOR DATA

(13rd pin, 14th pin, 15th pin of the U8) Display screen : all black pattern OSD menu display

lines

Enlargement

WAVE FORM 10 :ASIC OUT DATA

(53rdh~59th pins and 63rd~69th pins and 73rd~79th pins and 83rd~89th pins and 93th~99th pins and 103rd~109th pins of the U1)

Display screen : monochrome pattern at every 2

Enlargement

lines

Page 23

CHAPTER 7. BLOCK DIAGRAM / UNIT TERMINALS

LCD UNIT

LANP

1 LCD SIGNAL INPUT

RGB, H/V

INPUT

6J1

15 inch LCD

LANP

INTERFACE

UNIT

3J2

INVERTER

2 JP2

4J3

5 JP1

AC ADAPTER

AC100V

INPUT

AC 100V

INPUT

AC SOKET

AC SW

DOWNSTRAEM

Unit terminals

LCD SIGNAL INPUT

Used connector : FX8-60P-SV (HIROSE)

Pin No. Symbol Function

1GNDGND 2 RB0 RED 3RB1RED

KEY-SWITCH UNIT

POWER UNIT

JP1

USB HUB UNIT

(LSB)

UPSTRAEM

Pin No. Symbol Function

4RB2RED 5RB3RED 6RB4RED 7 RB5 RED (MSB) 8GNDGND

9 GB0 GREEN 10 GB1 GREEN 11 GB2 GREEN

(LSB)

Page 24

Pin No. Symbol Function

12 GB3 GREEN 13 GB4 GREEN 14 GB5 GREEN (MSB) 15 GND GND 16 BB0 BLUE 17 BB1 BLUE 18 BB2 BLUE 19 BB3 BLUE 20 BB4 BLUE 21 BB5 BLUE (MSB) 22 GND GND 23 RA0 RED 24 RA1 RED 25 RA2 RED 26 RA3 RED 27 RA4 RED 28 RA5 RED (MSB) 29 GND GND 30 GA0 GREEN 31 GA1 GREEN 32 GA2 GREEN 33 GA3 GREEN 34 GA4 GREEN 35 GA5 GREEN (MSB) 36 GND GND 37 BA0 BLUE 38 BA1 BLUE 39 BA2 BLUE 40 BA3 BLUE 41 BA4 BLUE 42 BA5 BLUE (MSB) 43 GND GND 44 REV1 (GND) 45 GND GND 46 Vsync Vertical synchronizing signal 47 Hsync Horizontal synchronizing signal 48 DE Data enable signal

49 GND GND 50 GND GND 51 CKB Sampling clock 52 CKA Sampling clock 53 GND GND 54 GND GND 55 REV2 (GND) 56 REV3 (GND) 57 Vcc +5V power supply 58 Vcc +5V power supply 59 Vcc +5V power supply 60 Vcc +5V power supply

JP2 (To Inverter Terminal)

Used connector : PH5PS (JST)

No.

1 ON / OFF HIGH = ON, LOW = OFF 2NC 3 BRIGHT Brightness control of inverter 4 GND GND 5 +12V B + of inverter

Symbol Function

(LSB)

J2 (To Key Switch Board Terminal)

Used connector : PH8PS (JST)

No.