LG StudioWorks 710E Service Manual
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LG StudioWorks 710E Service Manual

LG StudioWorks 710E Service Manual

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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : CA-131
MODEL:
StudioWorks 710E
StudioWorks 710S
StudioWorks 710B
(
) **Same model for Service
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html
(710BK-AL**A)
(710BK-AL**M, AL**B)
(710BK-AL**E)
*Same looking with new chassis.
Issue Date; 2003. 11.

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Summary of Contents for LG StudioWorks 710E

  • Page 1 Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CA-131 MODEL: StudioWorks 710E (710BK-AL**A) StudioWorks 710S (710BK-AL**M, AL**B) StudioWorks 710B (710BK-AL**E) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. *Same looking with new chassis.

  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 ADJUSTMENT ............11 SAFETY PRECAUTIONS ........3 TROUBLESHOOTING GUIDE ......13 TIMING CHART ............4 EXPLODED VIEW........... 23 OPERATING INSTRUCTIONS ........ 5 REPLACEMENT PARTS LIST ....... 25 WIRING DIAGRAM ..........6 PIN CONFIGURATION........... 30 DISASSEMBLY ............7 SCHEMATIC DIAGRAM .........

  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS SAFETY-RELATED COMPONENT WARNING! X-RADIATION There are special components used in this color monitor The only potential source of X-radiation is the picture tube. which are important for safety. These parts are marked However, when the high voltage circuitry is operating on the schematic diagram and the replacement properly there is no possibility of an X-radiation problem.

  • Page 4: Timing Chart

    TIMING CHART VIDEO SYNC << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Sync Total Period Video Active Sync Duration Front Porch Blanking Time Back Porch Mode Resolution Frequency Time (B) Sort Polarity –...

  • Page 5: Operating Instructions

    OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW ID Label Power ON/OFF Button AC Power Socket See Front Control Panel Signal Connector Front Control Panel 5. MENU Button 3. SELECT Button 2. Power (DPMS) Indicator Buttons 1. Power Button Button 1. Power ON/OFF Button Use these buttons to choose or adjust items in the on Use this button to turn the monitor ON or OFF.

  • Page 6: Wiring Diagram

    WIRING DIAGRAM P501 P701 S + S P702 P402 Socket P902 Signal Cable P302 P301 - 6 -...

  • Page 7: Disassembly

    DISASSEMBLY 1. TILT/SWIVEL & BACK COVER REMOVAL 1) Set the monitor face downward. 2) Carefully remove 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.

  • Page 8: Block Diagram

    [ OSD Control ] Heater ( 6.3V ) H-sync Signal BRIGHTNESS/CONTRAST Signal V-sync Si gnal VIDEO VIDEO COLOR CURVE cable OSD+pre_Amp Main_Amp C DATA (SDA) H / V POSITION (IC302) (IC303) H / V SIZE C CLOCK(SCL) SPCC G2 G1 TRAPIZODE PIN BALANCE CUT-OFF IC...

  • Page 9: Description Of Block Diagram

    DESCRIPTION OF BLOCK DIAGRAM 1. Line Filter & Associated Circuit. 6. Horizontal and Vertical Oscillation. This is used for suppressing noise of power input line This circuit generates the horizontal pulse and the vertical flowing into the monitor and/or some noise generated in pulse by taking the H and V sync signal.
  • Page 10 15. Image Rotation (Tilt) Circuit. 17. Video Output Amp Circuit. This circuit corrects the tilt of the screen by supplying the This circuit amplifies the video signal which comes from image rotation signal to the tilt coil which is attached near the video pre-amp circuit and amplified it to applied the the deflection yoke of the CRT.

  • Page 11: Adjustment

    ADJUSTMENT GENERAL INFORMATION 7) Adjust tilt as arrow keys to be the best condition. All adjustment are thoroughly checked and corrected 8) DIST. ADJ. → BALANCE command. when the monitor leaves the factory, but sometimes several adjustments may be required. 9) Adjust parallelogram as arrow keys to be the best Adjustment should be following procedure and after condition.
  • Page 12 14) Set Brightness and Contrast to Max position. 5. Input EDID Data. 1) Display color 15,0 cross hatch pattern at Mode 4. 15) Set SUB-CONTRAST 127(7F) (decimal) position. 2) EEPROM → Write EDID command and confirm 16) Set B-DRIVE to 85(55) at DRIVE of the alignment “EDID Write OK!!”...

  • Page 13: Troubleshooting Guide

    TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK TROUBLE IN FUSE FUSE OK? (F901) CHECK C908 VOLTAGE? TROUBLE IN (AC120V: 160VDC, D900 AC220V: 304VDC) CHECK TROUBLE IN IC901 PIN 6 Q901 WAVEFORM CHECK TROUBLE IN D941, D942, D941, D942, D951, D951, D961, D971 D961, D971...
  • Page 14 2. NO CHARACTER NO CHARACTER CHECK TROUBLE IN IC302 P302 5V LINE PIN 18(5V) ? TROUBLE IN CHECK PC SIGNAL, IC302 PIN 5, 6, 7? P301 SIGNAL CABLE CHECK TROUBLE IN IC302 PIN 19, 20, 21 ? IC302 CHECK TROUBLE IN IC303 PIN 4 (80V) P303 12V LINE/ PIN 8 (12V) ?
  • Page 15 3. NO RASTER NO VIDEO (POWER INDICATOR ON) CHECK AMBER DPM MODE POWER INDICATOR (NO H and/or V SYNC) GREEN or AMBER? GREEN CHECK TROUBLE IN D712 ANODE D712 (-160V)? CHECK TROUBLE IN G1 VOLTAGE? Q799 (-55V~-15V) CHECK TROUBLE IN CDT HEAT D941, Q942, Q941 VOLTAGE? (6.3V)
  • Page 16 4. NO HORIZONTAL DEFLECTION NO H-DEFLECTION (ONE VERTICAL LINE) CHECK TROUBLE IN Q706? Q706 CHECK TROUBLE IN B + VOLTAGE 50V LINE (50V)? CHECK T701(FBT) PIN 2 TROUBLE IN (31KHZ 60V, Q719, Q720, D710 69KHZ 140V) ? CHECK TROUBLE IN Q705 COLLECTOR Q705 WAVEFORM?
  • Page 17 5. TROUBLE IN H-LINEARITY UNBALANCED OF H-LIN. CHECK TROUBLE IN IC401 IC401 (MICOM) PIN 6, 7, 8 ? CHECK TROUBLE IN Q711~Q716? Q711 ~ Q716 CHECK TROUBLE IN L703? L703 Cs SIGNAL TABLE HORIZONTAL FREQUENCY(fH) 30K ~ 33.9K TROUBLE IN 34K ~ 38.9K C722, C723, C726, C729 39K ~ 43.9K...
  • Page 18 6. NO VERTICAL DEFLECTION NO V-DEFLECTION (ONE HORIZONTAL LINE) CHECK TROUBLE IN IC601 PIN 2 D951 15V LINE (15V+)? CHECK TROUBLE IN IC701 PIN 12, 13? IC701 12Pin 13Pin TROUBLE IN IC601, V-CIRCUIT - 18 -...
  • Page 19 7. TROUBLE IN OSD (ENTER BUTTON MUST BE PRESSED.) NO OSD CHECK TROUBLE IN IC302 B + 5V LINE (5V) ? DC 5V CHECK TROUBLE IN IC302 PIN 1, 24 IC401 PIN29 (V-FBP), WAVEFORM? IC701V LINE (H-FBP) Pin 1 Pin 24 TROUBLE IN OSD PERIPHERAL CIRCUIT...
  • Page 20 8. TROUBLE IN DPM (NO OFF MODE.) OFF MODE FAILURE CHECK CHECK PC, IC401 (MICOM) INPUT H/V SYNC SIGNAL (PC IS NOT GOING INTO PIN 30, 31 (H/V INPUT) DPM OFF MODE) SIGNAL? H/V SYNC CHECK TROUBLE IN IC401 PIN 12, 13 X401 WAVEFORM? 12MHz...
  • Page 21 9. NO DEGAUSSING NO DEGAUSSING (DEGAUSS ON THE OSD MENU MUST BE PRESSED.) CHECK TROUBLE IN IC401 PIN 5 IC401 (MICOM) (0V)? CHECK TROUBLE IN Q953 COLLECTOR Q953 VOLTAGE? DC 15V CHECK TROUBLE IN P902 ? P902 CHECK TROUBLE IN RL901? RL901 TROUBLE IN...
  • Page 22 10. NO TILT (NO ROTATION ) NO TILT (NO ROTATION) CHECK TROUBLE IN IC401 PIN21 IC401 ( MI COM) WAVE FORM ? CHECK 15V LINE TROUBLE IN 15V LINE, 6.3V LINE AND 6.3V LINE ? CHECK TROUBLE IN Q503 EMITTER Q501~Q503 VOLTAGE ? TROUBLE IN...

  • Page 23: Exploded View

    EXPLODED VIEW 11-2 11-1...
  • Page 24 3091TKC099D CABINET ASSEMBLY, 710BJ BRAND C083 PC+ABS,89483,S/W710B,MAADIRAN -(S/W 710B) 6318L17026C CDT(CIRC), M41LFQ503X00NDDV LG-PHILIPS DISPLAYS 70KHZ 29.1MM FST GLARE PLUS BARE -For Northern Hemisphere(S/W 710E) 6318L17026B CDT(CIRC) M41LFQ803X00NDDV LG-PHILIPS DISPLAYS 70KHZ 29.1MM FST MPR PLUS BARE -For Equatorial (S/W 710S) 6318L17026E CDT(CIRC), M41LFQ803X00SDDV LG-PHILIPS DISPLAYS 70KHZ 29.1MM FST MPR PLUS BARE -For Southern Hemisphere(S/W 710S)

  • Page 25: Replacement Parts List

    REPLACEMENT PARTS LIST CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL. * NOTE SAFETY Mark AL ALTERNATIVE PARTS DATE: 2003. 11. 14. DATE: 2003. 11. 14. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 26 DATE: 2003. 11. 14. DATE: 2003. 11. 14. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C750 0CK1040K945 0.1UF 50V Z F TR D404 971-0054 TIN 50MM TAPING C751 181-288J MKT 100V 563JTR PHS26563 D704 0DRFC00010A...
  • Page 27 DATE: 2003. 11. 14. DATE: 2003. 11. 14. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION COILs & COREs R314 0RD1000Q609 100 1/4W(3 5% TA52 L301 971-0054 TIN 50MM TAPING R315 0RD1000Q609 100 1/4W(3 5% TA52...
  • Page 28 DATE: 2003. 11. 14. DATE: 2003. 11. 14. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R490 0RD9100Q609 910 1/4W(3 5% TA52 R741 0RD1000Q609 100 1/4W(3 5% TA52 R491 0RD2200Q609 220 1/4W(3 5% TA52 R742 0RD2402Q609...
  • Page 29 DATE: 2003. 11. 14. DATE: 2003. 11. 14. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R906 0RD6200Q609 620 1/4W(3 5% TA52 R907 0RD3902Q609 39K 1/4W(3 5% TA52 R908 971-0054 TIN 50MM TAPING R910 0RX4702J609...

  • Page 30: Pin Configuration

    PIN CONFIGURATION M24C08 Serial I C BUS EEPROM SYMBOL DESCRIPTION PSDIP8 (BN) 0.25mm Frame E0-E2 Chip Enable Input Serial Data Address Input/Output Serial Clock SO8 (MN) Write Control 150mil Width Supply Voltage TSSOP8 (DW) 169mil Width Logic Dirgram Ground TDA4867J PHILIPS 32P, SDIP SYMBOL DESCRIPTION...
  • Page 31 TDA4841PS PHLIPS 32P EHT compensaton via vertical size EHT compensation via horizontal size 1.2V VSMOD HSMOD EWDRV HFLB FOCUS Vout2 EW-OUTPUT VERTICAL V-OUTPUT V-SYNC INPUT EHT COMPENSATION V-SYNC XRAY HSMOD V-sync OSCILLATOR H-PINCUSHION AND POLARITY Vout1 V-LINEARITY H-SIZE AND V-SIZE INTEGRATOR AND AGC H-CORNER...

  • Page 32: Schematic Diagram

    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. - 32 - - 33 -...

  • Page 33: Printed Circuit Board

    PRINTED CIRCUIT BOARD 1. MAIN BOARD (Component Side) 2. MAIN BOARD (Solder Side) - 34 - - 35 -...
  • Page 35 Nov. 2003 P/NO : 3828TSL099G Printed in Korea...

This manual is also suitable for:

Studioworks 710sStudioworks 710b

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