LG Electronics L1933TR, L1733TR service manual Contents, Specifications

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CONTENTS

CONTENTS

SPECIFICATIONS

2

PRECAUTIONS

3

TIMING CHART

7

DISASSEMBLY

8

BLOCK DIAGRAM

12

DISCRIPTION OF BLOCK DIAGRAM

14

ADJUSTMENT

16

SERVICE OSD

17

TROUBLESHOOTING GUIDE

18

WIRING DIAGRAM

24

EXPLODED VIEW

25

REPLACEMENT PARTS LIST

27

SCHEMATIC DIAGRAM

31

SPECIFICATIONS

1. LCD CHARACTERISTICS

Type

: TFT Color LCD Module

Active Display Area

: 17 inch - L1733T

 

: 19 inch - L1933T

Pixel Pitch

: 0.264 (H) x 0.264 (V) - L1733T

 

: 0.294 (H) x 0.294 (V) - L1933T

Color Depth

: 8bits, 16.2M colors

Size

: 358.5 (H) x 296.5 (V) x 17.0(D) - L1733T

 

: 396 (H) x 324 (V) x 17.5(D) - L1933T

Electrical Interface

: LVDS

Surface Treatment

: Hard-coating(3H), Anti-Glare

Operating Mode

: Normally White, Transmissive mode

Backlight Unit

: 4-CCFL

2.OPTICAL CHARACTERISTICS

2-1. Viewing Angle by Contrast Ratio 10

Left : -60° min., -70°(Typ)

Right : +60° min., +70°(Typ)

Top :+60° min., +75°(Typ)

Bottom : -50° min., -65°(Typ)

2-2.

Luminance

: 230(min), 300(Typ) (Full White pattern, 0.70V) -6500K

 

 

: 150(min) (Full White pattern, 0.70V) -9300K

 

 

75%(min)

2-3.

Contrast Ratio

: 1400:1 (DFC)

3.SIGNAL (Refer to the Timing Chart) 3-1. Sync Signal

• Type

: Separate Sync, Digital, SOG

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

 

: 0.467Vp-p

c) Color 15, 0

 

: 0.714Vp-p

3)

Input Impedance : 75

3-3. Operating Frequency

Horizontal

 

: 30 ~ 83kHz

Vertical

 

: 56 ~ 75Hz

4. Max. Resolution

 

D-sub Analog

: 1280 x 1024@75Hz

Digital

: 1280 x 1024@60Hz

5.POWER SUPPLY

5-1. Power : AC 100~240V, 50/60Hz , 0.6A

5-2. Power Consumption

MODE

H/V SYNC

VIDEO

POWER CONSUMPTION

LED COLOR

 

 

 

 

 

POWER ON (NORMAL)

ON/ON

ACTIVE

less than 33 W -L1733T

BLUE

 

 

less than 37 W -L1933T

or GREEN

 

 

 

 

 

 

 

 

STAND-BY

OFF/ON

OFF

less than 1 W

AMBER

 

 

 

 

 

SUSPEND

ON/OFF

OFF

less than 1 W

AMBER

 

 

 

 

 

DPMS OFF

OFF/OFF

OFF

less than 1 W

AMBER

 

 

 

 

 

POWER S/W Off

-

-

less than 1 W

OFF

 

 

 

 

 

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 HRS with 90% Confidence

Lamp Life

: 50,000 Hours(Min)

7. DIMENSIONS (with TILT/SWIVEL)

L1733T

 

Width

: 364.5 mm (14.35'')

Depth

: 180 mm (7.09'')

Height

: 378.2 mm (14.89'')

L1933T

 

Width

: 402 mm (15.83'')

Depth

: 180 mm (7.09'')

Height

: 407.5 mm (16.04'')

8.WEIGHT (with TILT/SWIVEL) L1733T

Net. Weight

: 3.5 kg (7.72 lbs)

Gross Weight

: 4.6 kg (10.14 lbs)

L1933T

 

Net. Weight

: 4.4 kg (9.70 lbs)

Gross Weight

: 5.6 kg (12.35 lbs)

Copyright 2007 LG Electronics. Inc. All right reserved.

LGE Internal Use Only

Only for training and service purposes

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Contents CHASSIS NO. LM57B READ THE SAFETY PRECAUTIONS IN THIS MANUALSame model for Service BEFORE SERVICING THE UNITCONTENTS SPECIFICATIONSmarked on the schematic diagram and the PRECAUTIONWARNING FOR THE SAFETY-RELATEDCOMPONENT Leakage Current Hot Check CircuitElectrostatically Sensitive ES Devices SERVICING PRECAUTIONSGeneral Servicing Precautions Small-SignalDiscrete Transistor IC Remove/ReplacementReplacement Removal/ReplacementAt Other Connections Circuit Board Foil RepairAt IC Connections SYNC TIMING CHARTVIDEO Soft pad on the table DISASSEMBLY-SetOnly for training and service purposes Pull up the stand part1.Pull the front cover upward Only for training and service purposesRemove the screws 3.Put the front face downDISASSEMBLY-Stand In case of Latch #1-1Only for training and service purposes In case of Latch #1DISASSEMBLY-Stand Hold the stand bodyMStarACE BLOCK DIAGRAMLIPS Line BufferINVERTER BLOCK DIAGRAM-POWERPOWER 1.Video Controller Part DESCRIPTION OF BLOCK DIAGRAM2.Power Part 3.MICOM PartPRIMARY LIPS Board Block Diagram6.Signal collection Operation description LIPSADJUSTMENT SERVICE OSD Figure 1. Cable ConnectionWaveforms TROUBLESHOOTING GUIDE1. NO POWER 2. NO RASTER OSD IS NOT DISPLAYED - LIPS 3. NO RASTER OSD IS NOT DISPLAYED - MSTAR Waveforms4. TROUBLE IN DPM Waveforms5. POWER 6. Raster LGE Internal Use Only WIRING DIAGRAMOnly for training and service purposes 6631900109ALGE Internal Use Only EXPLODED VIEWOnly for training and service purposes Description EXPLODED VIEW PARTS LISTRef. No Only for training and service purposes REPLACEMENT PARTS LISTSAFETY Mark CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTSFILTERs Only for training and service purposesLGE Internal Use Only TRANSISTORCAPACITORS Only for training and service purposesLGE Internal Use Only TRANSISTORs & ICsTRANSFORMER Only for training and service purposesLGE Internal Use Only Only for training and service purposes SCHEMATIC DIAGRAM1. SCALER LGE Internal Use OnlyLGE Internal Use Only 2. POWER & WAFEROnly for training and service purposes LGE Internal Use Only 3. INVERTEROnly for training and service purposes LGE Internal Use Only 4. POWEROnly for training and service purposes Feb P/NO MFL43002807
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L1733TR, L1933TR specifications

LG Electronics has established itself as a prominent player in the display technology market, offering a diverse range of monitors catered to various user needs. Among their notable models are the L1733TR, L1753TR, L1953T, L1953TX, and L1933TR, each designed to deliver exceptional performance, vivid visuals, and ergonomic features ideal for both casual users and professionals.

The LG L1733TR and L1753TR models are 17-inch and 17-inch widescreen monitors respectively, boasting a resolution of 1280x1024 pixels. These monitors utilize a TFT LCD panel technology that results in outstanding clarity and color accuracy. With a quick response time, they are well-suited for gaming and video playback, reducing motion blur and ensuring a smooth viewing experience. The aspect ratio of 5:4 for L1733TR and 16:10 for L1753TR further enhances compatibility with a variety of applications, particularly those requiring precise graphics.

The L1953T and L1953TX models represent LG’s commitment to larger display solutions, featuring a 19-inch screen size. With a resolution of 1280x1024 pixels, these monitors deliver sharp images and vibrant colors, making them ideal for graphic design and multimedia tasks. The L1953TX variant includes an added feature of built-in speakers, allowing for an all-in-one multimedia experience without the need for external audio devices.

The L1933TR, another commendable entry in LG's lineup, exhibits a sleek design with a slim profile and narrow bezels, making it a contemporary choice for users keen on aesthetics. This 19-inch monitor uses advanced backlight technology to provide better energy efficiency and reduced power consumption compared to traditional LCDs. With a wide viewing angle, the L1933TR ensures consistent image quality from different perspectives, allowing for collaborative work and presentations.

In terms of connectivity, all models are equipped with a variety of input options including VGA and DVI, facilitating compatibility with an array of devices such as laptops and desktops. The inclusion of various ergonomic features such as adjustable stands and VESA mount compatibility enhances user comfort, making long hours of work less taxing on the body.

Overall, LG's L1733TR, L1753TR, L1953T, L1953TX, and L1933TR monitors exemplify the company’s dedication to providing innovative display solutions that combine cutting-edge technology with user-friendly features, catering to the diverse requirements of modern users.