HP L1730R Service manual

HP L1730R

Important Safety Notice

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Proper service and repair isimportant to the safe, reliable

operation of all HPConsumer Electronics Company**

Equipment. The service procedures recommended by HP and

described in this service manual are effective methods of

performing service operations. Some ofthese service

operations require the use of tools specially designed for the

purpose. The special tools should be used when and as

recommended.

It is important to note that this manual contains various

CAUTIONS and NOTICES which should be carefully read in

order to minimize the risk of personal injury to service

personnel. The possibility exists that improper service

methods may damage the equipment. It is also important to

understand that these CAUTIONS and NOTICES ARE NOT

EXHAUSTIVE. HP could not possibly know, evaluate and

advise the service trade of all conceivable ways in which

service might be done or of the possible hazardous

consequences of each way. Consequently, HP has not

undertaken any such broad evaluation. Accordingly, a

servicer who uses a service procedure or tool which is not

recommended by HP must first satisfy himself thoroughly that

neither his safety nor the safe operation of the equipment will

be jeopardized by the service method selected.

* * Hereafter throughout this manual, HP Consumer

Electronics Company will bereferred to as HP.

WARNING

Critical components having special safety characteristics are

identified with a bythe Ref. No. inthe parts list and

enclosed within a broken line*

(where several critical components are grouped in one area)

along with the safety symbol on the schematics or

exploded views.

Use of substitute replacement parts which do not have the

same specified safety characteristics may create shock, fire,

or other hazards.

Under no circumstances should the original design be

modified or altered without written permission from Philips.

Philips assumes no liability, express or implied, arising out of

any unauthorized modification of design.

Servicer assumes all liability.

*BrokenLine

FOR PRODUCTS CONTAINING LASER :

DANGER- Invisible laser radiation when open.

AVOID DIRECT EXPOSURE TO BEAM.

CAUTION- Use of controls or adjustments or

performance of procedures other than

those specified herein may result in

hazardous radiation exposure.

CAUTION- The use of optical instruments with this

product will increase eye hazard.

TO ENSURE THE CONTINUED RELIABILITY OF THIS

PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S

REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART

NUMBERS IN THE PARTS LIST SECTION OF THIS

SERVICE MANUAL.

Take care during handling the LCD module with backlight

unit

- Must mount the moduleusing mounting holes arranged infour

corners.

- Do not press onthe panel, edge of theframe strongly or electric

shock as this will result in damage to the screen.

- Do not scratch orpress on the panel withany sharp objects, such

as pencil or pen asthis may result in damage to the panel.

- Protect the module fromthe ESD as it maydamage the electronic

circuit (C-MOS).

- Make certain that treatment person s body are grounded through

wrist band.

- Do not leave themodule in high temperature andin areas of high

humidity for a long time.

- Avoid contact with water as it may ashort circuit within the module.

- If the surface ofpanel become dirty, please wipe it off with a soft

material. (Cleaning with a dirty or rough cloth may damage the

panel.)

Technical Data

LCD panel

Type NR.

LM170E01_A5KE (LPL)

Number of Pixels. : 1280 (H) x 1024 (V)

Physical Size. : 358.5(W)*296.5(H)*17(D)mm

Pixel Pitch. : 0.264 x 0.264 mm

Color pixel arrangement. : RGB stripes arrangement

Support Color. : 16.2M Color

Display Mode. : Normally White

Backlight. : CCFLedge light system

Active area. (WXH). : 337.92 x 270.336mm (17” diagonal)

Viewing Angle. : Vertical 120 degree, Horizontal 140 degree (CR=10)

Contrast ratio. : 450:1

Luminance. : 250 cd/m

(Typ)

Scanning frequencies

H-Frequency. : 30K 83 K Hz V-Frequency. : 56- 76 Hz

Power input. : AC 90-135Vrms and 170-265Vrms,50/60+/-2Hz

Power consumptio : < 50 W maximum (with audio)

The input signals can be applied in two different modes:

1). VESA Analog The video input consists of red, green, and blue signals. The video signals are analog levels, where 0V corresponds to black and 700mV is the maximum signal amplitude.

Input impedance of video pins is 75 ohm +- 1%. The capability of sync signal inputs shall include separate sync.

input impedance: 2k2 ohmsThe signals are defined as follow:

Separate sync 3.3V and 5 voltTTL level, Positive/Negative

2). Intel DVIDigital Input signal: Four channel TMDS signals. The digital interface shall be comprised of 2 electrical layer component: a TMDS interface for low-voltage differential serial encoding of the digital display data(Panel Link compliant) and a DDC2B electrical interface.Refer to the Digital Display Working Group(DDWG) document,“Digital Visual Interface(DVI) Specification, Revision 1.0”for the exact requirements.

HP L1730R

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Unit dimension / Weight

Set dimension (incl. pedestal): 380.4(W)* 418.7(H)* 210(D) mm Net weight. : 6.4 kg Basic base: tilt angle :-5 to +25 ( operation ) swivel rotation : 170

Shipping dimension/Weight

Carton dimension. : 456(W) * 435(D) * 189(H) mm Gross weight. : 7.65 Kg

Susceptibility of display to external environment

Operating

- Temperature.:5to40degree C

- Humidity. : 15 ~ 80% max

- Altitude. : 0 to 10,000 feet

Storage

- Temperature. :-40 to 70 degree C

- Humidity. : 5~95% (< 40 )

- Altitude.: 0 to 30,000 feet

Pin Assignment

Red video input

Green video input

Blue video input

GND

Cable detect

Red vi d e o GND

Green video GND

Blue video GND

Input DVI-D connector pin

DDC +3.3V OR +5V

GND

Serial data line (SDA)

H-sync

V-sync

Data clock line (SCL)

HP L1730R

Technical Data(Continued)

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Data Storage

Factory preset modes: This monitor has 15 factory-preset modes as indicated in the

This monitor is ENERGY STAR compliant.

this product meets the ENERGY STAR guidelines for energy

Efficiency

Power management

The power consumption and the status indication of the set with

power management function are as follows,

STATUS H-sync V-sync Video Power LED

On On On Active <50W Green LCD

Stand-by Off On Blanked <2W Amber LCD

Suspend On Off Blanked <2W Amber LCD

Off Off Off Blanked <2W Amber LCD

DC Power off N / A <2W LCD Off

ENERGY STAR is a U.S. registered mark. AS AN ENERGY STAR

PARTNER, DELL Computer Corporation HAS DETERMINED THAT

THIS PRODUCT MEETS THE ENERGY STAR GUIDELINES FOR

ENERGY EFFICIENCY.

According to VESA power saving signal.

TCO99 power saving requirement EPA energy star requirement

(Power Switch Off)

For digital input power consumption is less 2W

(In non-DMPM recoverable off mode)

Installation

HP 1730R

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Connecting to PC

The monitor has two video signal connectors on the rear panel: one analog (VGA) and one digital (DVI-D). This allows you to connect the monitor to up to two computers at the same time.

When two computers are connected, you will need to set the Video Input Select on the on-screen display (OSD) menu to specify which monitor input has priority.

1. Place the monitor in a convenient, well-ventilated location Near your computer.

2. Connect the monitor signal cable into the correct video connector (VGA or DVI-D) on the back of the monitor and into the corresponding video connector on the rear panel of the computer.

Front control panel

Event Invocation

Power 1)

Input select/Plus

OSD menu

Auto adjustment /Minus

Pressing "Power" button. If Power is turned on, then monitor will be switched off. Otherwise monitor will be switched on.

Pressing " Input select/Plus" buttons. The buttons work as Input select when OSD menu is turned off. The buttons work as Up/Plus selection when OSD menu is turned on.

Pressing "OSD menu" button. If OSD menu is turned on, then the display screen will jump in the next menu or tur n off. Otherwise OSD menu will be turned on. Pressing "Auto adjustment/Minus " buttons. The buttons work as auto adjustment when OSD menu is turned off. The buttons work as Down/Minus selection when OSD menu is turned on.

Your computer must have a DVI-compatible graphics card installed for use with the DVI-D cable. When connecting the DVI-D signal cable to the DVI connector on the monitor, connect the other end of the DVI-D cable to the DVI connector on the Computer.

3. Connect one end of the power cable to the back of the monitor, and the other end to an electrical wall outlet.

Warnning:To reduce the risk of electric shock or damage to your equipment:

1. Do not disable the power cord grounding plug. The grounding plug is an important safety feature.

2. Plug the power cord into a grounded (earthed) electrical outlet that is easily accessible at all times.

3. Disconnect power from the monitor by unplugging the power cord from the electrical outlet.

4. Do not place anything on power cords or cables. Arrange them so that no one may accidentally step on or trip over them. Do not pull on a cord or cable. When unplugging from the electrical outlet, grasp the cord by the plug.

Advanced osd service mode configuration

HP L1730R

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On Screen Display

Basic osd service mode c onfiguration

Warning Message

Warning Message Table

Item Attention Signals Display Time Condition

1 Input Signal out of Range See power saver table

2 No Input Signal See power saver table

3 Going to Sleep See power saver table

4 Adjusting… Auto hot key or OSD menu function

5 OSD Lock out 3secs Push menu key for 10 sec then display 3 sec WM “OSD

Lock out”

6 Input Not Available DVI (Analog) switch to Analog (DVI) without sync

7 Check Video Cable See power saver table

Power Saver Table

HP L1730R

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Power Saver - On Power Saver - Off Note

Quit signal with

cable

1. System blank and show WM

“Going to Sleep” 3 sec then sleep.

Disconnect cable 1. System blank and show WM

“Check Video Cable” 10

sec then moving about 50 sec. 2.

Show WM “Going to Sleep” 3 sec

then sleep. 3. If push any key in

sleep mode, then repeat item 1 to

Out of range –1 1. System blank and show moving

WM “Input Signal out of Range”

about 60 sec. 2. Show WM “Going

to Sleep” 3 sec then sleep. 3. If

push any key in sleep mode, then

repeat item 1to 2.

Out of range –2 1. Show moving WM “Input Signal

out of Range” 60 sec.

2. WM disappear after WM 60

sec. 3. IF push any key then

repeat 1-2.

1. System blank and show moving

WM “No Input Signal” always.

1. System blank and show WM

“Check Video Cable” 10

sec then moving always.

1. System blank and show moving

WM “Input Signal out of Range”

always.

1. Show moving WM “Input Signal

out of Range” 60 sec.

2. WM disappear after WM 60

sec. 3. IF push any key then

repeat 1-2.

H<29.5 or

H>92 or

90>H>82.5 or

V<49 or V>87

or Vtotal>=120

DownScaling

Ex. 1280x1024

(Only for

HPL1530)

Out of range –3 1. Show moving WM “Input Signal

out of Range” 60 sec.

2. After moving WM 60 sec then

show WM “Going to Sleep” 3 sec

then sleep. 3. If push any key in

sleep mode, then repeat item 1 to

1. Show moving WM “Input Signal

out of Range” 60 sec.

2. After moving WM 60 sec then

show WM “Going to Sleep” 3 sec

then sleep. 3. If push any key in

sleep mode, then repeat item 1 to

85Hz

HP L1730R

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Lock/Unlock,Aging, Service/Factory Mode

Front control panel

To Lock/UnlockOSDfunction

The OSD function can belockedbypressing MANU button for

more than 10 seconds, the screen shows followingwindows for 3

seconds. Everytime when you press MANU Or AUTO

button, this message AppearsOnthe screen automatically.

The POWER & INPUT hotkey are still functional

POWER and INPUT expectivelywhile OSD locked.

Locked OSD function can be releasedbypressing MANU button for more than 10 seconds. While press MANU button for OSD unlocked purpose, the screen will keep showing OSD LOCK OUT until OSD function unlocked and the windows screen automaticallyshowed.

AGING MODE No signal input ,power off -> on ,then Into the factorymode,,a full white pattern will be display on the screen as Fig.1 in stead of power savingmode.Inother words, thepower savingfunction will be disable inthe factor

ymode.Supply one signa l for leaving agingmode.

for

Fig.1

Access FactoryMode

Power off on the monitor, To holdMANU And + INPUT buttons at the sametime , And press POWER buttontopower on the monitor. Press MANU button to bringup OSD menufor

confirmation

Factorymenu

Cursor can moveongray color area

BL : Blacklevel value

SUB-BRI : Brightness valuerange(Min Max)

SUB-CON : Contrast valuerange(Min Mid Max)

SRGB-B : Brightness of sRGB(Reserved)

SRGB-C : Contrastof sRGB(Reserved)

Gain-m : Minimum valueofUser Gain

Gain-M : Maximum valueofUser Gain

AUTO-SUB: To do Au

push “Up”keyin white pattern

Panel Type:Ifset this to 1,2,3,4,5 then system

will force panel type to LG(QDI), CPT orAU).

Set to other value will auto detect panel based on

panel hardware.

SCALER : Read/Write scaler register

NVRAM : Read/Write eeprom address

to color function when

SERVICE MODE Press andhold the Manubutton ,power off -> on ,then Into the service mode.Press Manubutton to bringup OSD menufor confirmation asbelow:

HPL1730R V200 20040301

BL : 0

SUB - BRI : 0 220

SUB - CON : 88 128 168

9300K R Xxx G xxx B xxx

6500K R Xxx G xxx B xxx

SRGB R Xxx G xxx B xxx

OFFSET2 R Xxx G xxx B xxx

GAIN R Xxx G xxx B xxx M 255 m 0

AUTO-SUB +

OFFSET1 R Xxx G xxx B xxx

SCALER:ADD: VAL: READ WRITE

NVRAM:ADD: VAL: READ WRITE

PANEL: 0

EXIT 1024x768 48.3KHz @60Hz

Flat Panel Adjust

HP ADJUSTMENT PATTERN.EXE

VERSION: 2.00 Rev A

OPERATING SYSTEM(S): Microsoft Windows 98 Microsoft Windows Millennium Edition (ME) Microsoft Windows 2000 Microsoft Windows XP 32-bit Personal Microsoft Windows XP 32-bit Professional

DESCRIPTION: This CD contains the HP Auto-Adjustment utility, which is a

single pattern program designed to help improve the picture quality of your HP flat panel monitor.

Note: Do not use the following procedure if your flat panel monitor is using a

DVI connector option.

To use the Adjustment pattern with your flat panel monitor:

1. Execute the auto-adjust function from the OSD main menu.

2. If the result is not satisfactory, start the "Adjustment pattern.exe" program and repeat step 1.

HP L1730R

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Image quality characteristics that can be improved:

- Fuzzy or unclear focus

- Ghosting, streaking or shadowing effects

- Faint vertical bars

- Thin horizontal scrolling lines

- Centering the picture

Note: To achieve optimal picture performance, it is recommended that you always set the operating system display mode to your flat panel's native resolution. See list below for reference. 14in. and 15in. flat panels = 1024x768 17in., 18in. and 19in. flat panels = 1280x1024 20in. and 21in. flat panels = 1600x1200

HP L1730R

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Mechanical Instruction

Front view

Back view

Fig.1

Fig.2

Step 3. Remove the Back cover as Fig.5~8. A. Use thin "I" type screwdriver to open 2 clicks on bottom side as Fig.5

b .Use thin "I" type screwdriver to open 4 clicks on right side as Fig.6

c. Use thin "I" type screwdriver to open 4 clicks on left side as Fig.7

Fig.5

Step 1. Remove the four screws as Fig.3.4

Remove the two screws as Fig.4

Fig.3

Fig.4

Fig.6

Fig.7

Fig.8

Step 4. Disconnect the control PCB,remove the five screws as Fig.9.10

Mechanical Instruction

HP L1730R

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Fig.10

Fig.9

Fig.13

Fig.14

Step 5 Disconnect the scaler pcb and power pcb, remove

the ten screws as FIG.11.12.13

In warranty, it is not allowed to disassembly the LCD panel, even the

backlight unit defect.

Out of warranty, the replacment of backlight unit is a correct way

when the defect is cused by backlight (CCFL,Lamp).

Fig.11

Fig.12

HP L1730R

Definition of Pixel Defects

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LCD Monitor Quality and Pixel Policy

The TFT monitor uses high-precision technology, manufactured according to HP standards, to guarantee

trouble-free performance. Nevertheless, the display may have cosmetic imperfections that appear as small

bright or dark spots.

This is common to all LCD displays used in products supplied by all vendors and is not specific to the HP LCD.

These imperfections are caused by one or more defective pixels or sub-pixels.

1. A pixel consists of one red, one green, and one blue sub-pixel.

2. A defective whole pixel is always turned on (a bright spot on a dark background), or it is always off (a dark spot

on a bright background). The first is the more visible of the two.3. A defective sub-pixel (dot defect) is less

2. visible than a defective whole pixeland is small and only visible on a specific background.The HP display does

not have more than:

4. bright dots.

5. dark dots.

6. total bright and dark dots.

7. No more than two adjacent (less than 2.5 mm edge-to-edge) defective pixels. To locate defective pixels, the monitor

should be viewed under normal operating conditions, in normal operating mode at a supported resolution and

refresh rate, from a distance of approximately 50 cm (16 in.).HP expects that, over time, the industry will continue to

improve its ability to produce LCDs with fewer cosmetic imperfections And HP will adjust guidelines as

improvements are made.

Electrical Instructions

HP L1730R

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1.General points

1.1 During thetestandmeasuring, supply a distortion free AC mains voltagetotheapparatus via an isolated transformer with low internal resistance.

1.2 All measurements mentionedhereafter are carried out at a normal mains voltage (90 - 132 VAC for USA version, 195 -264 VAC for EUROPEAN version, or 90 -265VACfor the

del withfull range power supply, unless

otherwise stated.)

1.3 All voltages are to be measure d or appliedwith respect to ground, unless otherwise stated. Note:don'tuseheat-sink as ground.

1.4 Thetesthas to be doneonacomplete set including LCD panel after 30 minutes warm-up at least in a roomwith te

1.5 All values mentioned in these test instruction are only applicable of a well aligned apparatus,with correct signal.

1.6 The letters symbols (B) and(S)placedbehind the test instruction denotes

(B): carried out 100% inspection at assembly line

(S): carried out test by sampling

1.7 The white balance (color temperature)has to be teste

1.8 Repetitive power on / off cycle are allowed except it shouldbeavoidedwithin 6 sec.

mperature of25+/-5degree C.

d in subdued lighted room.

PRESETVIDEO RESOLUTION

# Resolution

1 640X48031.469K 25.175 59.940 VGA

2640X48037.861K 31.5 72.809VESA

3 640X48037.5K 31.501 75VESA

4 720X400 31.469K 28.322 70.087 VGA

5800X600 37.879K 40 60.317 VESA

6800X600 48.077K5072.188H zVE SA

7 800X600 46.875K 49.498 75HzVESA

8832X624 49.726K 57.284 74.551HzMAC

9 1024X768 48.363K6560.004HzVESA

10 1024X768 56.476K 75 70.069HzVESA

11 10 24X768 60.023K 78.75 75.029HzVESA

12 11 52X870 68.68K 100 75.06HzMAC

13 1152X900 71.71K 108 76.05Hz SUN

14 1280X1024 63.98K 10860.02HzVESA

15 1280X1024 79.97K 135 75.02HzVESA

H-Frequency (Hz)

Pixel rate

(MHz)

V-Frequency (Hz)

Comment

2. Input signal

2.1 Signal type

2.1.1 Video signal input

Signal source:pattern generator format as attachment. (Table1to19) Reference generator:QuantumData 802G Theinput signals can beapplied in two different modes:

1). VESA AnalogThe video input consists of red, green, andblue signals.The v

where 0V correspondstoblack and 700mV is The maximum signal amplitude. Input impedance of video pins is 75 ohm +/- 1%.

2). Intel DVI Digital Input signal:Four channel TMDS signals.The digital interface shall becomprised of2electrical layer component: a TMDS interface for low-voltage differential serial encoding of the digital display data(Panel Link compliant) and a DDC2B electrical interface. Refer to the Digital DisplayWorking Group(DDWG) document,Digital Visual Interface (DVI)Specification, Revision 1.0 f requirements.

2.1.2 Sync signal input

Thecapability of sync signal inputs shall include

separate sync, input impedance:2k2ohms The signals are defined as follow: Separate sync 3.3V and5volt TTLlevel , Positive/Negative Signal source:p attachment (Table1to19) Reference generator:

QuantumData 802G

2.2 Input signal mode

Pre-set 15modes

ideo signals are analog levels,

or theexact

attern generator format as

2.3 Allowed85Hz overscan signal modespecifiedOnce thesignal sync input of PC is 85Hz, this monitor is able to display at least

for 60 seconds.An attention signal appears and showsInput Signal Out Of Range for 60 seconds ,changecomputer displa input to 1280X1024@60Hz.

Dot rate (MHz)

36.000 43.269 VESA 640 *480 85.008

556.250 53.674VESA 800 *600 85.061

94.500 68.677 VESA 1024 *

157.5 91.146 VESA 1280 *

2.4 Interface

2.4.1 Analog signal

Theinput signals are applied to display through D-sub

cable. Length: 1.8M+/-50 mm (fixed)

Connector type:D-submale. With DDC_2B pin assignments. White connector thumb-operatedjack screws

H.Freq (KHz)

Mode Resolution V. F req

(Hz)

84.997

768

85.024

1024

HP L1730R

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Electrical Instructions

2.4.2 Digital signal

The input signals are applied to display through DVI-D cable.

Length: 1.8 M +/-50 mm (fixed) Connector type: DVI-D male With DDC_2B pin assignments. White connector thumb-operated jack screws Panel Link T.M.D.S input.

Pin assignment:

Pin No. Description

1 T.M.D.S data22 T.M.D.S data2+ 3 T.M.D.S data2 shield 4 No connect 5 No connect 6 DDC clock 7 DDC data 8 No connect

9 T.M.D.S data110 T.M.D.S data1+ 11 T.M.D.S data 1 shield 12 No connect 13 No connect 14 +5V power

Ground (for +3.3V)

15 16 Hot plug detect 17 T.M.D.S data018 T.M.D.S data0+ 19 T.M.D.S data0 shield 20 No connect 21 No connect 22 T.M.D.S clock shield 23 T.M.D.S clock+ 24 T.M.D.S clock-

4.5 EEPROM presetting (B)

After finishing all the adjustment, set:

1. Menu = Basic

2. Color = 6500K-sRGB

3. Language = English

4. Power Saver = ON

5. Power On Recall = ON

6. Mode Display = OFF

7. Horizontal OSD Position = 50%

8. Vertical OSD Position = 50%

9. OSD Timeout = 30

10. Sleep Timer = OFF

11. OSD Transparency = 0

12. Brightness = 90%

13. Contrast = 80%

4.6 When adjustment is finished, monitor should be set to 6500K-sRGB color.

4.7 The monitor shall leave the factory with the Power switch set to the OFF position

-cable detect

3.POWER SUPPLY

Set AC input at 264V / 90 V, add

2.6A loading to 12V O/P and DC O/P voltage is 12V +/- 1.2V,

1A loading to 3.3V O/P and DC O/P voltage is 3.3V +/- 0.165V,

1.5A loading to 5V O/P and DC O/P voltage is 5V +/- 0.5V.

4. DISPLAY aDJUSTMENT

4.1Access to factory mode (RS232) in auto-alignment system

The communication protocol switch to RS232 .

4.2 Auto color adjustment (B)

Apply a 640*480/31.47kHz/60Hz.signal with 16-gray

level pattern, set brightness control at 90%, and contrast

control at 80%. Then, adjust the R. G. B offset, and gain

to calibrate the color smoothly and 64-gray level distinguishable at 1280*1024/63.98kHz/60Hz.

4.3 Adjustment of WHITE-D (B) Apply a 1280*1024 / 60Hz signal with white pattern,

set brightness control at 90%, and contrast control at 80%.

Adjust the R, G, B Sub-Gain, for the screen center, the 1931 CIE chromaticity (X, Y) co -ordinates shall be;

9300

°K 6500°K-sRGB

± 0.020 0.313 ± 0.020

x(center)

0.283

y (center) 0.297 ± 0.020 0.329 ± 0.020

Use Minolta CA-110 for color coordinates and luminance check.

Luminance is > 200 Nits in the center of the screen when brightness at 100% and contrast set to 100% at custom color (R,G,B=100%).

DDC Instructions

HP L2025

HP L1730

HP L2025

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General DDC Data Re-programming

In case the DDC data memory IC or main EEPROM which storage all factory settings were replaced due to a defect, the serial numbers have to be re-programmed" Analog DDC IC, Digital DDC IC & EEPROM". It is advised to re-soldered DDC IC and main EEPROM from the old board onto the new board if circuit board have been replaced, in this case the DDC data does not need to be re-programmed.

Additional information

Additional information about DDC (Display Data Channel) may be obtained from Video Electronics Standards Association (VESA). Extended Display Identification Data(EDID) information may be also obtained from VESA.

DDC EDID structure For Analog interface: Standard Version 3.0

For Digital inferface: Standard Version 3.0

Structure Version 1.2

Structure Version 1.3

System and equipment requirements

1. An i486 (or above) personal computer or compatible.

2. Microsoft operation system Windows 95/98.

edid46Release For writing block 4

3. EDID301.EXE program (3138 106 10103) as shown in Fig. 1

4. A/D Alignment kits (3138 106 10079): inclusion : a. Alignment box x1 (as Fig. 2)

Note: The alignment box has already build-in a batteries socket for

Using batteries (9V) as power source. Pull out the socket by

remove four screws at the rear of box. Please do not forget that

remove batteries after programming. The energy of batteries can

only drive circuits for a short period of time.

Fig.5

A/D Alignment Kits - Digital connection

b. Printer cable x1 c. (D-Sub) to (D-Sub) cable x1 d. (DVI-D) to (D-Sub) cable x1 (as Fig. 3) Note: The EDID301.EXE (Release Version 1.58 20000818)is a windows-based program, which cannot be run in MS-DOS.

Fig.1

Diskette with EDID301.EXE

edid46Release For writing block 4

Fig.3

(DVI-D) to (D-Sub) cable

Fig.2

Pin assignment

A. 15-pin D-Sub Connector

B. Input DVI -D Connector pin

Fig.4

HP L1730R

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DDC Instructions

Configuration and procedure

There are 2 chips contained OSD string, serial number..etc on the circuit board, main EEPROM which storage all factory settings,OSD string. DDC IC which storage 128byte EDID data(serial number ..etc.). Following descirptions are the connection and procedure for Analog and Digital DDC application, the main EEPROM can be re-programmed along with Analog/Digital IC by enable factory memory data write function on the DDC program (EDID301.EXE).

Initialize alignment box

In order to avoid that monitor entering power saving mode due to sync will cut off by alignment box, it is necessary to initialize alignment box before running programming software (EDID301.EXE). Following steps show you the procedures and

writing block 4

connection. Step 1: Supply 8~12V DC power source to the Alignment box by plugging a DC power cord or using batteries. Step 2: Connecting printer cable and video cable of monitor as Fig. 6

4.6

edid46Release For

3. At the submenu, type the letter of your computer's floppy disk drive

followed by :EDID301 (for example, A:\EDID301, as shown in Fig. 8).

A:\EDID 4 6

4. Click OK button. The main menu appears (as shown in Fig. 9).

This is for initialize alignment box.

Fig.8

Fig.9

Note 1: If the connection is improper, you will see the following error

message (as shown in Fig. 10) before entering the main menu.

Meanwhile, the (read EDID) function will be disable. At this time,

please make sure all cables are connected correctly and fixedly,

and the procedure has been performed properly.

Fig.6

Step 3: Installation of EDID301.EXE Method 1: Start on DDC program Start Microsoft Windows.

1. Insert the disk containing EDID301.EXE program into floppy disk drive.

2. Click , choose Run at start menu of Windows 95/98 as

shown in Fig. 7.

4.6

Fig.7

Fig.10

Method 2: After create a shortcut of EDID301.EXE

This is for initialize alignment box.

: Double click EDID301 icon (as shown in Fig. 11) which

is on the screen of Windows Wallpaper.

Bring up main menu of EDID301 as shown in Fig. 12.

This is for initialize alignment box.

4.6

Fig.12

Fig.11

Note 2: During the loading, EDID301 will verify the EDID data which just

loaded from monitor before proceed any further function, once

the data structure of EDID can not be recognized, the following

error message will appear on the screen as below. Please

confirm following steps to avoid this message.

1. The data structure of EDID was incorrect.

2. DDC IC that you are trying to load data is empty.

3. Wrong communication channel has set at configuration setup windows.

4. Cables loosed or poor contact of connection.

Fig.13

DDC Instructions

HP L2025

HP L1730R

HP L2025

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Re-programming Analog DDC IC

Step 1: After initialize alignment box, connecting all cables and

box as shown in Fig. 14

Fig/14

Step 2: Read DDC data from monitor

1. Click icon as shown in Fig. 15 from the tool bar to bring up

the Channels "Configuration Setup" windows as shown in Fig. 16.

Fig.15

Step 3: Modify DDC data (verify EDID version, week, year)

1. Click (new function) icon from the tool bar, bring up Step 1 of 9 as shown in Fig. 18 .

4.6

EDID301 DDC application provides the function selection and text change (select & fill out) from Step 1 to Step 9.

Fig.18

Step 4: Modify DDC data (Monitor Serial No.)

1. Click Next , bring up Fig. 19.

2. Select the DDC2B as the communication channel.

and "Enable Factory mode"

As shown in Fig. 16.

3. Click OK button to confirm your selection.

4. Click icon (Read EDID function) to read DDC EDID data from

monitor. The EDID codes will display on screen as shown in Fig. 17.

Fig.16

Fig.17

Fig.19

2. Click Next , bring up Fig. 20.

Fig.20

HP L1730R

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DDC Instructions

3. Click Next , bring up Fig. 21.

4. Click Next , bring up Fig. 22

6. Click Next , bring up Fig. 24

Fig.24

Fig.21

7. Click Next , bring up Fig. 25

Fig.25

5. Click Next , bring up Fig. 23

Fig.22

8. Click Next , bring up Fig. 26.

- Serial number can be filled up or be changed at this moment.

- Click Finish to exit the Step window.

Fig.23

Fig.26

HP L1730R

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DDC Instructions

Re-programming Digital DDC IC

Step 1:Connecting all cables and alignment box as shown in

Fig. 31.

Fig.31

Step 2: Initialize alignment box

(Shortcut of EDID301.EXE on Windows Wallpaper already.)

Double click EDID301 icon (as shown in Fig. 32) which is

on the screen of Windows Wallpaper.

Bring up main menu of EDID301 as shown in Fig. 33.

4.6

4. Click icon (Read EDID function) to read DDC EDID data from monitor. The EDID codes will display on screen as shown in Fig. 35.

Fig.35

Step 4: Modify DDC data (verify EDID version, week, year)

1. Click (new function) icon from the tool bar, bring up Step 1 of 9 (Digital) as shown in Fig. 36 . EDID4.6 DDC application provides the function selection and text change (select & fill out) from Step 1 to Step 9.

Fig.32

4.6

Step 3: Read DDC data frommonitor

1. Click icon from the tool bar to bring up the Channels

Configuration Setup windows as shown in Fig. 34.

2. Select the DDC2B as the communication channel.

and "Enable Factory mode"

3. Click OK button to confirm your selection.

Fig.34

Fig.33

Fig.37

Fig.36

Fig.38

HP L1730R

Failure Mode Of Panel

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Quick reference for failure mode of LCD panel

this page presents problems that could be made by LCD panel. It is not necessary to repair circuit board. Simply follow the mechanical instruction on this manual to eliminate failure by replace LCD panel.

Polarizer has bubbles

Failure description

Vertical block defect

Vertical dim lines

Vertical lines defect (Always bright or dark)

Horizontal block defect

Phenomenon

Polarizer has bubbles

Foreign material inside polarizer. It shows liner or dot shape.

Concentric circle formed

Horizontal dim lines

Horizontal lines defect (Always bright or dark)

Has bright or dark pixel

Bottom back light of LCD is brighter than normal

Back light un-uniformity

Backlight has foreign material. Black or white color, liner or circular type

Safety Test Requirements

HP 1730R

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All units that are returned for service or repair must pass the original manufactures safety tests. Safety testing requires both

and testing.Hipot Ground Continuity

HI-POT TEST INSTRUCTION

1.Application requirements

1.1 All mains operated products must pass the Hi-Pot test as described in this instruction.

1.2 This test must be performed again after the covers have been refitted following the repair, inspection or modification of the product.

Test method

2.1 Connecting conditions

2.1.1 The test specified must be applied between the parallel-

blade plug of the mainscord and all accessible metal parts of the product.

2.1.2 Before carrying out the test, reliable conductive

connections must be ensured and thereafter be maintained throughout the test period.

2.1.3 The mains switch(es) must be in the "ON" position.

2.2 Test Requirements

All products should be HiPot and Ground Continuity tested as follows:

3. Equipments and Connection

3.1. Equipments For example :

- ChenHwa 9032 PROGRAMMABLE AUTO SAFETY

TESTER

- ChenHwa 510B Digital Grounding Continuity Tester

- ChenHwa 901 (AC Hi-pot test), 902 (AC, DC Hi-pot test)

Withstanding Tester

3.2. Connection

* Turn on the power switch of monitor before Hipot and

Ground Continuity testing.

Clip

Condition HiPot Test for HiPot Test for Ground Continuity

products where products where Test requirement the mains input the mains input is range is Full 110V AC(USA range(or 220V type) AC)

Test 2820VDC 1700VDC Test current:

voltage (2000VAC) (1200VAC) 25A,AC

Test time: Test time 3 seconds 1 second 3 seconds(min.) (min.) Resistance

required: Trip set at 100 uA 5 mA <=0.09+Rohm, current for Max. R is the (Tester) limitation; set resistance of

at 0.1 uA for the mains cord.

Min. Limitation Ramp set at 2 time seconds (Tester)

2.2.1 The minimum test duration for Quality Control Inspector must be 1 minute.

2.2.2 The test voltage must be maintained within the specified voltage + 5%.

(ChenHwa 9032 tester)

Video cable

Connect the "video cable" or "grounding screw" to the CLIP on your tester.

Grounding screw

Connect the power cord to the monitor.

2.2.3 There must be no breakdown during the test.

2.2.4 The grounding blade or pin of mains plug must be conducted with accessible metal parts.

Power outlet

4. Recording

(Rear view of monitor)

Hipot and Ground Continuity testing records have to be kept for a period of 10 years.

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