Daewoo 710B Technical Information, Power IC, Transistor or Devices Removal/Replacement

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Power IC, Transistor or Devices Removal/Replacement

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 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

Picture Tube

Type : 17-inch, Flat Square Tube type

 

(16.2-inch, viewing area)

 

 

Dot Pitch : 0.28mm

 

 

Face Treatment : Non-glare / Anti-static

Video

Input Signal : R.G.B Analog

 

 

Amp. Bandwidth : 85 MHz

 

 

Input Sync : TTL, separate negative / positive

Scan Frequency

Horizontal : 30-69 KHz

 

 

Vertical : 50-160 Hz

 

Max. Resolution

1280 dots X 1024 lines (at 60Hz)

 

Power Source

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

Display Area

Standard Display Area : 310mm(H)X232mm(V)

 

Full Screen Size : 330mm(H)X250mm(V)

Power Consumption

Max. 100W

 

 

 

 

 

 

 

 

 

 

State

 

Recovery Time

Power LED

 

 

On

 

None

Green

 

 

Stand-by

 

3 seconds

Green : 1 second

 

 

Suspend

 

Amber : 0.5 second

 

 

 

 

 

 

Off

 

7 seconds

Amber

Dimension

424(W)X440(H)X447.2(D)mm

 

 

(set with stand)

 

 

Weight (Net/Gross)

16.8/19.7 kg

 

 

Operating Environment

Temperature : 10-40°C/50-104°F

 

 

Relative Humidity : 8-80%

 

Storage Environment

Temperature : -20-45°C/-4-113°F

 

 

Relative Humidity : 5-90%

 

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Contents Service Manual XGA COLOR MONITOR Model 710BCONTENTS 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 Replacement“Small-Signal” Discrete Transistor Removal/Replacement RemovalTECHNICAL INFORMATION Power IC, Transistor or Devices Removal/ReplacementDiode Removal/Replacement GENERAL INFORMATION AbbreviationsCaution For Servicing PIN CONNECTORCAUTIONS FOR ADJUSTMENT AND REPAIR OPERATION & ADJUSTMENT ADJUSTMENT KEYADJUSTMENT PROCESS RECALLCONTRAST BRIGHTNESSOSDOn-Screen Display Menu ROTATION Choose different preset color temperatures or set your own customized Self Diagnosis No Character TROUBLESHOOTING HINTS1. No Character 2. No Raster No Raster3. A missing Color One color is missing4. Abnormal OSD Font Abnormal OSD Font5. Horizontal Output Circuit Trouble in Horizontal output circuit No RasterUnstable picture Is H.Syncinput pin of IC501 correct?6-2. V.OSC/Deflection Circuit Unstable or Abnormal picture7. Focus Monitor remains unfocused7-1. Dynamic Focus Focus is poor8. Convergence Poor convergence9. Abnormal Picture 9-1. Horizontal Size Abnormal H.Sizechanged, is the H.size changed? 1.Check B+ section of TDA9109 and its ambient circuit9-2. Vertical Size Abnormal V.Size10. High Voltage Circuit Trouble in H.V circuit No Raster11. Side-Pincushion Circuit Side-Pincusion distortion is excessive or barrel12. Power Supply Unit P.S.U Trouble in P.S.U8.7V DC? of C104 13V DC?13V DC? ALIGNMENT PROCEDURE Standard Adjustment ConditionsPre-Adjustment Main Adjustmentl Repeat e,f,g,h,i,j DIAGRAM PCB LAYOUT Main PCB Component SideMain PCB Solder Side Video PCB Component Side Video PCB Solder Side Page EXPLODED VIEW DIAGRAM Abbreviation of Description REPLACEMENT PARTS LISTImportant Safety Notice CIRCUIT BOARD ELECTRICAL PARTS LIST PART-CODEPART-NAME PART-DESCPART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC OVERSEAS SERVICE DEPT Serv ce ManualPRINTED DATE NOV.1998 DAEWOO ELECTRONICS CO