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LG StudioWorks 710B, Service Manual, Page: 1 / 35

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LG StudioWorks 710B Service Manual Download Page 1

COLOR MONITOR

SERVICE 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.

MODEL: 

StudioWorks 710E 

(710BK-AL**A)

StudioWorks 710S 

(710BK-AL**M, AL**B)

StudioWorks 710B 

(710BK-AL**E)

CHASSIS NO. : CA-131

(      ) **Same model for Service

*Same looking with new chassis.

Issue Date; 2003. 11.

Summary of Contents for StudioWorks 710B

Page 1: ...vice com techsup html CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL StudioWorks 710E 710BK AL A StudioWorks 710S 710BK AL M AL B StudioWorks 710B 710BK AL E CHASSIS NO CA 131 Same model for Service Same looking with new chassis Issue Date 2003 11 ...

Page 2: ...80 x 9 60 Preset Image Size 310 x 230 mm 12 20 x 9 06 4 2 Display Color Full Colors 4 3 Display Resolution 1280 x 1024 60Hz Max Non Interlace 4 4 Video Bandwidth 110 MHz 5 ENVIRONMENT 5 1 Operating Temperature 0 C 40 C Ambient 5 2 Relative Humidity 10 90 Non condensing 5 3 Altitude 5 000 m 6 DIMENSIONS with TILT SWIVEL Width 400 mm 15 75 inch Depth 411 mm 16 18 inch Height 397 5 mm 15 65 inch 7 WE...

Page 3: ...sign Soldering must be inspected for the cold solder joints frayed leads damaged insulation solder splashes or the sharp points Be sure to remove all foreign materials IMPLOSION PROTECTION All used display tubes are equipped with an integral implosion protection system but care should be taken to avoid damage and scratching during installation Use only same type display tubes X RADIATION The only ...

Page 4: ...1 1 14 2 70 0 57 V 85 07 11 755 11 178 0 577 0 056 0 503 0 018 H 68 677 14 561 10 836 3 725 1 016 2 201 0 508 V 85 00 11 764 11 182 0 582 0 044 0 524 0 014 Mode H V Sort 1 2 3 4 640x480 75Hz 800x600 85Hz 1024x768 85Hz 800x600 75Hz Dot Clock MHz Horizontal Frequency kHz Vertical Frequency Hz Horizontal etc µs Vertical etc ms Sync Polarity Frequency Total Period A Video Active Time B Sync Duration E...

Page 5: ...ormal or damaging circuit turns out orange blink 3 Select Button Use this button to enter a selection in the on screen display 4 Button Use these buttons to choose or adjust items in the on screen display 5 MENU Button Use this button to enter or exit the on screen display FRONT VIEW REAR VIEW AC Power Socket Signal Connector ID Label Front Control Panel Power ON OFF Button See Front Control Panel...

Page 6: ...WIRING DIAGRAM 6 P501 P301 P302 G2 P702 P701 T1 P402 P902 S S Signal Cable AC Socket FBT ...

Page 7: ... the Tilt Swivel by pulling it upward 3 Pressing the latch b Back cover by pushing it upward 4 Release the latch c See Tip Spec 5 Slide the Back Cover away from the Front Cabinet of the monitor Tip C B A Tip Spec A Width 5 0 15 0mm B Depth 0 6 0 9mm C Height 12 0mm a Back Cover Cabinet b c 1 2 2 3 3 ...

Page 8: ...rtical Blanking 160V 15V D D Feed Back 30V 12V MICOM IC401 SCL SDA H V sync PWM control signal 15V 15V 50V DY CDT Heater 6 3V I2C I2C I2C H V Sync Screen H V R G B Bias R G B Contrast H Drive B Drive B 15V BRIGHTNESS CONTRAST COLOR CURVE H V POSITION H V SIZE SPCC TRAPIZODE PIN BALANCE PARALLELOGRAM TOP CORNER BOTTOM CORNER RECALL DEGAUSSING MOIRE LANGUAGE RESET OSD TIME TILT DPM Control Circuit 4...

Page 9: ...operating mode and offers the controlled data H size H position V size etc 4 The controlled data of each mode is stored in itself 5 User can adjust screen condition by each OSD function The data of the adjusted condition is stored in EEPROM IC402 6 Horizontal and Vertical Oscillation This circuit generates the horizontal pulse and the vertical pulse by taking the H and V sync signal This circuit c...

Page 10: ...e deflection yoke of the CRT 16 Video Pre Amp Circuit This circuit amplifies the analog video signal from 0 0 7V to 0 4V It is operated by taking the clamp R G B drive and contrast signal from the Micom IC401 17 Video Output Amp Circuit This circuit amplifies the video signal which comes from the video pre amp circuit and amplified it to applied the CRT cathode ...

Page 11: ...olor data will be erased 4 Power button of the monitor turn off turn on 5 COMMAND PRESET START Y Yes command 6 DIST ADJ CTRL PWM TILT command 7 Adjust tilt as arrow keys to be the best condition 8 DIST ADJ BALANCE command 9 Adjust parallelogram as arrow keys to be the best condition 10 Adjust balance of pin balance as arrow keys to be the best condition 11 DIST ADJ FOS ADJ command 12 Adjust V SIZE...

Page 12: ...ay color 15 0 full white patten at Mode 4 21 COLOR ADJ LUMINANCE ABL command 22 Adjust ABL to 32 1FL of the luminance 23 After push the ENTER key and COMMAND PRESET EXIT Y Yes command 24 Exit from the program 5 Input EDID Data 1 Display color 15 0 cross hatch pattern at Mode 4 2 EEPROM Write EDID command and confirm EDID Write OK message of monitor 3 Exit from the alignment program 4 Power switch ...

Page 13: ...USE F901 TROUBLE IN Q901 TROUBLE IN D941 D942 D951 D961 D971 TROUBLE IN Q903 Q952 Q951 Q942 Q941 CHECK FUSE OK CHECK C908 VOLTAGE AC120V 160VDC AC220V 304VDC NO YES YES YES YES NO NO NO CHECK IC901 PIN 6 WAVEFORM CHECK D941 D942 D951 D961 D971 VOLTAGE TROUBLESHOOTING GUIDE ...

Page 14: ...C303 PIN 1 2 3 CHECK IC303 PIN 4 80V PIN 8 12V TROUBLE IN P302 5V LINE TROUBLE IN PC SIGNAL P301 SIGNAL CABLE TROUBLE IN IC302 TROUBLE IN P303 12V LINE 80V LINE TROUBLE IN IC303 NO YES NO NO YES YES YES YES NO NO CHECK R G B CATHODE VOLTAGE TROUBLE IN R331 R333 L311 L313 D307 D312 TROUBLE IN CRT SOCKET YES NO ...

Page 15: ...CHECK POWER INDICATOR GREEN or AMBER CHECK D712 ANODE 160V CHECK G1 VOLTAGE 55V 15V TROUBLE IN D712 TROUBLE IN Q799 DPM MODE NO H and or V SYNC AMBER NO GREEN YES NO CHECK CDT HEAT VOLTAGE 6 3V TROUBLE IN D941 Q942 Q941 YES NO TROUBLE IN CDT YES ...

Page 16: ...E VERTICAL LINE CHECK Q706 CHECK B VOLTAGE 50V CHECK T701 FBT PIN 2 31KHZ 60V 69KHZ 140V CHECK Q705 COLLECTOR WAVEFORM TROUBLE IN Q706 TROUBLE IN 50V LINE TROUBLE IN Q719 Q720 D710 TROUBLE IN Q705 TROUBLE IN T701 P701 NO NO YES YES YES YES NO NO 0V T ...

Page 17: ...UBLE IN IC401 MICOM TROUBLE IN Q711 Q716 TROUBLE IN L703 TROUBLE IN C722 C723 C726 C729 NO NO NO YES YES YES Cs SIGNAL TABLE HORIZONTAL FREQUENCY fH 30K 33 9K 34K 38 9K 39K 43 9K 44K 48 9K 49K 51 9K 52K 57 9K 58K 61 9K 62K 65 9K 66K 71K Cs1 L L H H H H H H H Cs3 L H L L L L L H H Cs2 L L L L H H H H H ...

Page 18: ...8 6 NO VERTICAL DEFLECTION NO V DEFLECTION ONE HORIZONTAL LINE CHECK IC601 PIN 2 15V CHECK IC701 PIN 12 13 TROUBLE IN D951 15V LINE TROUBLE IN IC701 TROUBLE IN IC601 V CIRCUIT NO YES YES NO 5V 12Pin 13Pin ...

Page 19: ...D TROUBLE IN OSD PERIPHERAL CIRCUIT NO OSD TROUBLE IN 5V LINE TROUBLE IN IC401 PIN29 V FBP IC701V LINE H FBP NO YES DC 5V YES NO Pin 24 5V Pin 1 CHECK IC302 B 5V ENTER BUTTON MUST BE PRESSED CHECK IC302 PIN 1 24 WAVEFORM ...

Page 20: ...V CHECK PC PC IS NOT GOING INTO DPM OFF MODE TROUBLE IN X401 TROUBLE IN IC401 MICOM TROUBLE IN Q941 Q942 Q951 Q952 TROUBLE IN PC OFF MODE FAILURE INPUT H V SYNC SIGNAL H V SYNC NO OFF MODE NO NO NO NO DPMF 0V DPM TABLE Mode Item NORMAL STAND BY SUSPEND OFF DPMF H L L L LED GREEN AMBER AMBER AMBER DPMS H H H L YES YES SEE DPM TABLE YES YES 5V 12MHz ...

Page 21: ...HECK Q953 COLLECTOR VOLTAGE CHECK P902 CHECK RL901 TROUBLE IN IC401 MICOM TROUBLE IN Q953 TROUBLE IN P902 TROUBLE IN RL901 TROUBLE IN TH901 DEGAUSSING COIL NO DEGAUSSING DC 15V NO NO NO NO YES YES YES YES DEGAUSS ON THE OSD MENU MUST BE PRESSED ...

Page 22: ...N NO TILT NO ROTATION TROUBLE IN IC401 MICOM TROUBLE IN 15V LINE 6 3V LINE TROUBLE IN Q501 Q503 TROUBLE IN P501 TILT COIL NO YES YES YES CHECK 15V LINE AND 6 3V LINE CHECK Q503 EMITTER VOLTAGE NO NO CHECK IC401 PIN21 WAVE FORM ...

Page 23: ...EXPLODED VIEW 23 10 12 12 13 11 2 11 1 14 14 4 3 8 B A 2 6 7 5 a d c b b 9 1 ME NU SE LE CT 15 e ...

Page 24: ...8 NEW TYPE COIL DEGAUSSING 16 0OHM 0 35MM 80T 17 L1090MM WITH EARTH 700BJ FBT FLY BACK TRANSFORMER CF2154 F700BK 17 71K FLAT FCDT FST LIEN CHANGE 17 SOCKET CIRC POWER CDJ 3C DUOLING AC UNIVERSAL 3PIN BLACK SOCKET CIRC POWER SA 4S HUA JIE AC UNIVERSAL 3PIN BLACK CABLE D SUB UL20276 9C 5 8MM AT 1500MM GRAY 85964 T710BJ DM METAL SHIELD BOTTOM CB553 0 8T REAR HOLE DELETE For World Wide S W 710E 710S M...

Page 25: ... 50V M FM5 TP 5 C601 0CE227CH638 220UF SHL SD 25V M FM5 TP 5 C602 181 288K MKT 100V 683JTR PHS26683 C603 0CE476EK638 47UF KMG 50V M FM5 TP 5 C604 0CZZTFT001V ECQB1H473JM3 473J 50V TP5 0 C605 0CK1020W515 1000P 500V K B TS C701 0CQ4721N419 0 0047U 100V J POLY NI TP5 C702 0CZZTFT001M ECQB1H103JF3 MATSUSHITA 50V C703 0CZZTFT001Z ECQB1H104JM3 104J 50V TP5 0 C704 0CQ8221N519 0 0082UF D 100V 10 PE NI TP ...

Page 26: ...19A 1N4148 GULF TP DO35 100V 0 1 DATE 2003 11 14 S AL LOC NO PART NO DESCRIPTION SPECIFICATION D404 971 0054 TIN 50MM TAPING D704 0DRFC00010A FFPF04F150S FAIR CHILD ST TO D705 0DRGF00069A SB140 GULF TP DO41 40V 1A 40 D706 0DRFC00010A FFPF04F150S FAIR CHILD ST TO D710 0DR400409AC UF4004 GULF TP DO41 400V 1A D711 0DSGF00019A 1N4148 GULF TP DO35 100V 0 1 D712 0DR100009CA RGP10G TP GULF SEMICONDUCTOR ...

Page 27: ...KTC3198 Y KTC1815 TP KEC TO R301 0RD0752Q609 75 1 4W 3 5 TA52 R302 0RD0752Q609 75 1 4W 3 5 TA52 R303 0RD0752Q609 75 1 4W 3 5 TA52 R305 0RN6201F409 6 20K 1 6W 1 TA52 DATE 2003 11 14 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R314 0RD1000Q609 100 1 4W 3 5 TA52 R315 0RD1000Q609 100 1 4W 3 5 TA52 R319 0RD4701Q609 4 70K 1 4W 3 5 TA52 R320 0RD4701Q609 4 70K 1 4W 3 5 TA52 R326 0RD2201Q609 2 20K 1 4W 3...

Page 28: ...609 0 56 1 2W 5 TA52 R739 0RD6800Q609 680 1 4W 3 5 TA52 R740 0RD0271A609 2 7 OHM 1 2 W 7 0 5 TA52 DATE 2003 11 14 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R741 0RD1000Q609 100 1 4W 3 5 TA52 R742 0RD2402Q609 24K 1 4W 3 5 TA52 R743 0RD2702Q509 27K OHM 1 4 W 3 4 2 TA52 R744 0RD2700A609 270 OHM 1 2 W 7 0 5 TA52 R745 0RD4702Q609 47K 1 4W 3 5 TA52 R746 0RD2201Q609 2 20K 1 4W 3 5 TA52 R747 0RD3001Q6...

Page 29: ...52 R954 0RD4701Q609 4 70K 1 4W 3 5 TA52 R955 0RD4701Q609 4 70K 1 4W 3 5 TA52 R956 0RD6802A609 68K OHM 1 2 W 7 0 5 TA52 R957 0RD0472A609 47 OHM 1 2 W 7 0 5 TA52 R960 0RD6200A609 620 OHM 1 2 W 7 0 5 00 TA5 R962 0RD0332Q609 33 1 4W 3 5 TA52 J57 0RD1001Q609 1K 1 4W 3 5 TA52 RL901 6920TBA004A G5PA 1 M OMRON 250VAC 5A 12V SC301 6620TBD003A PCS701E PARK ELEC 10PIN 14 SC901 6620TKB002D CDJ 3C DUOLING AC U...

Page 30: ...FLYBACK GENERATOR GUARD CIRCUIT INPUT STAGE from e g TDA485X or SAA4856 INP INN IPROTECTION AMPLIFIER B 4 9 6 8 1 2 3 5 7 OUTA GUARO output power save mode GND FEEDB OUTB vertical deflection coil Rp Vp VFB Rm Rref Idefl Block Diagram SYMBOL INP INN VP OUTB GND OUTA VFB GUARD FEEDB DESCRIPTION non inverted input inverted input supply voltage output B ground output A flyback supply voltage guard out...

Page 31: ...IZE EW OUTPUT V OUTPUT V LINEARITY V LINEARITY BALANCE H PINCUSHION H CORNER H TRAPEZIUM H SIZE OUTPUT ASYMMETRIC EW CORRECTION FOCUS HORIZONTAL AND VERTICAL B CONTROL B CONTROL APPLICATION H OUTPUT STAGE X RAY PROTECTION PLL2 PARALLELOGRAM PIN UNBALANCE AND SOFT START V POSITION V SIZE VOVSCN TDA4841PS I C BUS RECEIVER 2 I C BUS REGISTERS HUNLOCK SDA SCL 9 2 to 16V H C sync V clamping blanking PR...

Page 32: ... 32 33 SCHEMATIC DIAGRAM NOTICE Since this is a basic schematic diagram The value of components and some partial connection are sucject to be changed for improvement without notice ...

Page 33: ... 34 35 PRINTED CIRCUIT BOARD 1 MAIN BOARD Component Side 2 MAIN BOARD Solder Side ...

Page 34: ......

Page 35: ...Nov 2003 P NO 3828TSL099G Printed in Korea ...

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