LG L1730SSNTM, L1730SSNT Service Manual

COLOR MONIT OR

SER VICE MANUAL

Website:http://biz.LGservice.com

E-mail:http://www.LGEservice.com/techsup.html

CAUTION

BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS NO. : CL-61

MODEL:

L1730S (L1730SM-AL**E) L1730S (L1730SSNTM-AL**E)

( ) **Same model for Service

*Same looking with new chassis.

LightView SOURCE

SET/AUTO

- 1 -

1. LCD CHARACTERISTICS

Type : TFT SXGA LCD Size : 17 inch Pixel Pitch : 0.264 (H) x 0.264 (V) Color Depth : 16.2M colors Electrical Interface : LVDS Surface Treatment : Hard-coating(3H), Anti-Glare Operating Mode :

Normally White,

Transmissive mode

Backlight Unit : Top/Bottom edge side 4-CCFL

(Cold Cathode Fluorescent Lamp)

2. OPTICAL CHARACTERISTICS

2-1. Viewing Angle by Contrast Ratio

≥

LPL Module

Left : -60° min., -70°(Typ) Right : +60° min., +70°(Typ) Top :+45° min., +60°(Typ) Bottom : -45° min., -60°(Typ)

AUO Module

Left : -60° min., -70°(Typ) Right : +60° min., +70°(Typ) Top :+60° min., +70°(Typ) Bottom : -60° min., -70°(Typ)

CMO Module

Left : -60° min., -70°(Typ) Right : +60° min., +70°(Typ) Top :+50° min., +60°(Typ) Bottom : -50°min., -60°(Typ)

2-2. Luminance : 200(min), 250(Typ)

-LPL Module

230(min), 260(Typ) -AUO Module 230(min), 300(Typ) -CMO Module

2-3. Contrast Ratio : 300(min), 450(Typ)

LPL, CMO Module

250(min), 450(Typ) -AUO Module

3. SIGNAL (Refer to the Timing Chart)

3-1. Sync Signal

• Type : Separate Sync, SOG (Sync On Green) Composite Sync

3-2. Video Input Signal

1) Type : R, G, B Analog

2) Voltage Level : 0~0.71 V

a) Color 0, 0 : 0 Vp-p b) Color 7, 0 : 0.467 Vp-p c) Color 15, 0 : 0.714 Vp-p

3) Input Impedance : 75 Ω

3-3. Operating Frequency

Horizontal : 30 ~ 83kHz Vertical : 56 ~ 75Hz

. Max. Resolution

Analog : 1280 x 1024 / 75Hz

5. POWER SUPPLY

5-1. Power

: AC 100~240V, 50/60Hz , 0.6A

5-2. Power Consumption

6. ENVIRONMENT

6-1. Operating Temperature: 10°C~35°C (50°F~95°F)

(Ambient)

6-2. Relative Humidity : 10%~80%

(Non-condensing)

6-3. MTBF : 50,000 Hours(Min)

7. DIMENSIONS (with TILT/SWIVEL)

Width : 398 mm (15.66'') Depth : 220 mm (8.66'') Height : 393 mm (15.47'')

8. WEIGHT (with TILT/SWIVEL)

Net. Weight : 4.9 kg (10.80 lbs) Gross Weight : 6.5 kg (14.33 lbs)

CONTENTS

SPECIFICATIONS

- 2 -

SPECIFICATIONS ................................................... 2

PRECAUTIONS ....................................................... 3

TIMING CHART ....................................................... 4

OPERATING INSTRUCTIONS ................................ 5

WIRING DIAGRAM ................................................. 6

BLOCK DIAGRAM ................................................... 8

DESCRIPTION OF BLOCK DIAGRAM.....................9

ADJUSTMENT ....................................................... 11

TROUBLESHOOTING GUIDE .............................. 13

EXPLODED VIEW...................................................17

REPLACEMENT PARTS LIST ...............................19

SCHEMATIC DIAGRAM......................................... 25

MODE

POWER ON (NORMAL)

STAND-BY

SUSPEND

DPMS OFF

POWER S/W Off

H/V SYNC

ON/ON OFF/ON ON/OFF

OFF/OFF

POWER CONSUMPTION

less than 43 W

less than 1 W less than 1 W

LED COLOR

GREEN AMBER AMBER AMBER

Off

VIDEO

ACTIVE

OFF OFF OFF

- 3 -

WARNING FOR THE SAFETY-RELATED COMPONENT.

• There are some special components used in LCD monitor that are important for safety. These parts are

marked on the schematic diagram and the replacement parts list. It is essential that these critical

parts should be replaced with the manufacturer’s specified parts to prevent electric shock, fire or other hazard.

• Do not modify original design without obtaining written permission from manufacturer or you will void the original parts and labor guarantee.

TAKE CARE DURING HANDLING THE LCD MODULE WITH BACKLIGHT UNIT.

• Must mount the module using mounting holes arranged in four corners.

• Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.

• Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to the panel.

• Protect the module from the ESD as it may damage the electronic circuit (C-MOS).

• Make certain that treatment person’s body are grounded through wrist band.

• Do not leave the module in high temperature and in areas of high humidity for a long time.

• The module not be exposed to the direct sunlight.

• Avoid contact with water as it may a short circuit within the module.

• If the surface of panel become dirty, please wipe it off with a softmaterial. (Cleaning with a dirty or rough cloth may damage the panel.)

WARNING

BE CAREFUL ELECTRIC SHOCK !

• If you want to replace with the new backlight (CCFL) or inverter circuit, must disconnect the AC adapter because high voltage appears at inverter circuit about 650Vrms.

• Handle with care wires or connectors of the inverter circuit. If the wires are pressed cause short and may burn or take fire.

PRECAUTION

CAUTION

Please use only a plastic screwdriver to protect yourself from shock hazard during service operation.

TIMING CHART

- 4 -

VIDEO

SYNC

MODE

H / V

Sync

Polarity

Frequency

Total

Period

( E )

Video

Active

Time ( A )

Sync

Duration

( D )

Front

Porch

( C )

Blanking

Time

( B )

Resolution

Dot

Clock

H(Pixels) +

25.175

31.469 800 640 16 96 48 640 x 350

V(Lines) - 70.09 449 350 37 2 60

H(Pixels) -

28.321

31.468 900 720 18 108 54 720 X 400

V(Lines) + 70.08 449 400 12 2 35

H(Pixels) -

25.175

31.469 800 640 16 96 48 640 x 480

V(Lines) - 59.94 525 480 10 2 33

H(Pixels) -

31.5

37.5 840 640 16 64 120 640 x 480

V(Lines) - 75 500 480 1 3 16

H(Pixels) +

40.0

37.879 1056 800 40 128 88 800 x 600

V(Lines) + 60.317 628 600 1 4 23

H(Pixels) +

49.5

46.875 1056 800 16 80 160 800 x 600

V(Lines) + 75.0 625 600 1 3 21

H(Pixels) +/-

57.283

49.725 1152 832 32 64 224 832 x 624

V(Lines) +/- 74.55 667 624 1 3 39

H(Pixels) -

65.0

48.363 1344 1024 24 136 160

1024 x 768

V(Lines) - 60.0 806 768 3 6 29

H(Pixels) -

78.75

60.123 1312 1024 16 96 176

1024 x 768

V(Lines) - 75.029 800 768 1 3 28

H(Pixels) +/-

100.0

68.681 1456 1152 32 128 144

1152 x 870

V(Lines) +/- 75.062 915 870 3 3 39

H(Pixels) +/-

92.978

61.805 1504 1152 18 134 200

1152 x 900

V(Lines) +/- 65.96 937 900 2 4 31

H(Pixels) +

108.0

63.981 1688 1280 48 112 248

1280 x 1024

V(Lines) + 60.02 1066 1024 1 3 38

H(Pixels) +

135.0

79.976 1688 1280 16 144 248

1280 x 1024

V(Lines) + 75.035 1066 1024 1 3 38

- 5 -

FRONT VIEW REAR VIEW

OPERATING INSTRUCTIONS

Front Control Panel

SET/AUTO

LightView

See front control panel

Power Connector

D-Sub Signal Connector

1. Power Button

Use this button to turn the display on or off.

2. Power Indicator

This Indicator lights up green when the display operates

normally. If the display is in DPM (Energy Saving) mode,

this indicator color changes to amber.

3. MENU Button

Use this button to enter or exit the On Screen Display.

OSD LOCKED/UNLOCKED

This function allows you to lock the current control settings, so that they cannot be inadvertently changed. Press and hold the MENU button for 5 seconds. The message "OSD LOCKED" should appear. You can unlock the OSD controls at any time by pushing the MENU buttonfor 5 seconds. The message "OSD UNLOCKED" should appear.

4. -, +

Buttons

Use these buttons to select or adjust functions in the On

Screen Display.

-, +

Button

LightView hot key

For more information, refer to page A13

5. SET/AUTO Button

Use this button to enter a selection in the On Screen

Display.

AUTO IMAGE ADJUSTMENT

When adjusting your display settings, always press the SET/AUTO button before entering the On Screen Display(OSD). This will automatically adjust your display image to the ideal settings for the current screen resolution size (display mode).The best display mode is 15 inch monitor : 1024x768@60Hz 17 inch monitor : 1280x1024@60Hz

OSD LOCKED

OSD UNLOCKED

LIGHT VIEW

DAY TEXT

PROCESSING AUTO IMAGE ADJUSTMENT

1 2

SET

MST9151

Control Board

J706

J702

J705

Main Board

Power Board

- 6 -

WIRING DIAGRAM

(LG Philips/Hydis/CMO Module)

Connector Ass’y :

(Main to LIPS)

P/N: 6631T2000Q

Connector Ass’y :

(Main to Module)

P/N: 6631T11012W

Connector Ass’y :

(Main to Control)

P/N: 6631T20024C

- 7 -

MST9151

Control Board

J706

J702

J705

Main Board

Power Board

WIRING DIAGRAM

(AU Module)

Connector Ass’y :

(Main to LIPS)

P/N: 6631T2000Q

Connector Ass’y :

(Main to Module)

P/N: 6631T11012W

Connector Ass’y :

(Main to Control)

P/N: 6631T20024C

+ 18 hidden pages

LG L1730SSNTM, L1730SSNT Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual