Daewoo 531X Technical Information, Power IC, Transistor or Devices Removal/Replacement

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Power IC, Transistor or Devices Removal/Replacement

1.Heat and remove all solders from the device leads.

2.Remove the heatsink mounting screw (if applicable).

3.Carefully remove the device from the circuit board.

4.Insert new device in circuit board.

5.Solder each device lead and then clip off excess lead.

6.Replace heatsink.

Diode Removal/Replacement

1.Remove defective diode by clipping its leads as close as possible to diode body.

2.Bend the two remaining leads perpendicularly to the circuit board.

3.Observing diode polarity, wrap each lead out of the new diode around the corresponding lead on the circuit board.

4.Securely crimp each connection and solder it.

5.Inspect the solder joints of the two “original” leads on the circuit board copper side. If they are not shiny, reheat them and apply additional solder if necessary.

TECHNICAL INFORMATION

CDT Size

 

15-inch

 

 

 

Diagonal visible image area

14-inch

 

 

 

 

Dot Pitch

 

0.28 mm

 

 

 

 

 

Synchronization

 

Horizontal

30

- 54 KHz

 

 

 

 

 

 

 

Vertical

50

- 160 Hz

 

 

 

 

Plug and Play

 

DDC1/2B/CI

 

 

 

 

Power Saving

 

EPA, VESA DPMS, Nutek Compliant

 

 

 

 

Power Source

 

100-240 Vac, 50/60Hz (Free Voltage)

 

 

 

 

Power Consumption

 

70W

 

 

 

Dimension-W x H x D

360 x 377 x 389mm

(set with stand)

 

 

 

 

 

 

Weight-unpacked(lbs/Kg)

25.4/11.5

 

 

 

 

Operating Temperature

10

~ 40°C /50 ~ 104°F

 

 

 

 

 

6

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Contents XGA Color Monitor Contents Safety Precautions Safety CheckFire & Shock Hazard Implosion ProtectionGeneral Safety Information Symbols in the manualSymbols as marked on equipment Terms in the manualServicing Precautions General Servicing PrecautionsElectrostatically Sensitive ES Devices General Soldering GuidelinesIC Removal/Replacement ReplacementSmall-Signal Discrete Transistor Removal/Replacement RemovalTechnical Information Power IC, Transistor or Devices Removal/ReplacementDiode Removal/Replacement General Information AbbreviationsPIN Connector Pin SignalOperation and Adjustment Control PanelKey Process OSD Functions Adjust the horizontal picture moire cancellation Alignment Procedure Standard Adjustment ConditionsPre-Adjustment Method to launch the factory modePage No Character Troubleshooting HintsNo Character No Raster No RasterMissing Color One color is MissingAbnormal OSD Font Abnormal OSD FontHorizontal Output Circuit VGAUnstable Picture Horizontal Unstable PictureVertical Focus Monitor remains UnfocusedConvergence Poor convergenceAbnormal Picture Horizontal Size Abnormal SizeVertical Size Side-Pincushion Circuit Power Supply Unit P.S.U Trouble in P.S.UU O.K Diagram BlockPCB Layout Main PCB Solder Side CRT PCB Component Side CRT PCB Solder Side Schematic Diagram Power & Connection SectionControl & Vert. out Section Horizontal Section Video Section Exploded View Diagram Abbreviation of Description Important Safety NoticeInformation of Part Description Electrical Parts List PART-NAME PART-DESCLOC LED Metal Film Diode TVR1G TPA1 686, AHYEON-DONG MAPO-GU SEOUL, Korea