LG Electronics L1933TR, L1733TR service manual Power

Page 22
5. POWER

5. POWER

NO POWER

 

 

(POWER INDICATOR OFF)

 

 

CHECK

NO

Trouble in Fuse (F101)

Fuse F101 OK?

 

 

 

YES

 

 

CHECK

 

 

C101 Voltage

NO

Check BD101

(AC110V->160Vdc

 

(AC220V->304Vdc

 

 

YES

 

 

CHECK

NO

Check U101 Pin7 : 9~10V

U101 Pin6 Waveform

(Square wave

 

Check D102

Come out?)

 

 

YES

 

 

Check Q101 Drain

NO

Trouble in Q101

 

Waveform

 

 

YES

 

 

Check D201, D202

NO

Trouble in D201, D202

 

Voltage

 

 

YES

 

 

CHECK 5V, 12V Line

 

 

Copyright 2007 LG Electronics. Inc. All right reserved.

LGE Internal Use Only

Only for training and service purposes

- 22 -

 

Image 22
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 CircuitGeneral Servicing Precautions SERVICING PRECAUTIONSElectrostatically Sensitive ES Devices Small-SignalDiscrete Transistor IC Remove/ReplacementReplacement Removal/ReplacementAt IC Connections Circuit Board Foil RepairAt Other Connections VIDEO TIMING CHARTSYNC 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 BufferPOWER BLOCK DIAGRAM-POWERINVERTER 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 Connection1. NO POWER TROUBLESHOOTING GUIDEWaveforms 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 6631900109AOnly for training and service purposes EXPLODED VIEWLGE Internal Use Only Ref. No EXPLODED VIEW PARTS LISTDescription 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 & ICsLGE Internal Use Only Only for training and service purposesTRANSFORMER Only for training and service purposes SCHEMATIC DIAGRAM1. SCALER LGE Internal Use OnlyOnly for training and service purposes 2. POWER & WAFERLGE Internal Use Only Only for training and service purposes 3. INVERTERLGE Internal Use Only Only for training and service purposes 4. POWERLGE Internal Use Only Feb P/NO MFL43002807
Related manuals
Manual 26 pages 7.84 Kb Manual 26 pages 25.78 Kb Manual 26 pages 63.59 Kb

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.