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LG StudioWorks 500E Service Manual

Chassis no. : ca-120
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COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. : CA-120
FACTORY MODEL: CB553H
MODEL:
StudioWorks 500E
StudioWorks 500G
StudioWorks 500N
*(
) ID LABEL Model No.
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MENU
SELECT
Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html
(CB553H-ML)
(CB553H-AL)
(CB553H-ZL)

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  Summary of Contents for LG StudioWorks 500E

  • Page 1: Color Monitor

    Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CA-120 FACTORY MODEL: CB553H MODEL: StudioWorks 500E (CB553H-ML) StudioWorks 500G (CB553H-AL) StudioWorks 500N (CB553H-ZL) ) ID LABEL Model No. CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 ADJUSTMENT ............9 SAFETY PRECAUTIONS ........3 TROUBLESHOOTING GUIDE ......11 TIMING CHART ............4 EXPLODED VIEW........... 21 OPERATING INSTRUCTIONS ........ 5 REPLACEMENT PARTS LIST ....... 23 WIRING DIAGRAM ..........6 PIN CONFIGURATION........... 28 BLOCK DIAGRAM ........... 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 (A) Polarity Sort –...
  • Page 5: Operating Instructions

    OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW ID Label MENU SELECT See Front Control Panel Power ON/OFF Button AC Power Socket Signal Connector Front Control Panel MENU SELECT 4. SET 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 P402 P701 S + S P702 Socket P902 Signal Cable P302 P301 P305 - 6 -...
  • Page 7: Block Diagram

    BLOCK DIAGRAM Focus Screen COIL COIL TILT DEGAUSSING - 7 -...
  • Page 8: Description Of Block Diagram

    DESCRIPTION OF BLOCK DIAGRAM 1. Line Filter & Associated Circuit 7. D/D(DC to DC) Converter This is used for suppressing noise of power input line This circuit supplies DC voltage to the horizontal flowing into the monitor and/or some noise generated in deflection output circuit by increasing DC 50V which is the monitor flowing out through the power input line.
  • Page 9: Adjustment

    ADJUSTMENT GENERAL INFORMATION 7) Adjust parallelogram as arrow keys to be the best condition. All adjustment are thoroughly checked and corrected 8) Adjust balance of pin-balance as arrow keys to be when the monitor leaves the factory, but sometimes the best condition. several adjustments may be required.
  • Page 10 5. Input EDID Data. 17-1) Adjust R-DRIVE and B-DRIVE command to white 1) Display color 15,0 cross hatch pattern at Mode 4. ± 0.003 and y=0.298 ± 0.003 on the balance x=0.283 2) EEPROM Write EDID command and confirm White Balance Meter with PC arrow keys. “EDID Write OK!!”...
  • Page 11: Troubleshooting Guide

    TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK TROUBLE IN FUSE FUSE OK? (F901) (F901) CHECK C908 VOLTAGE? TROUBLE IN D900 (AC120V: 160VDC, AC220V: 304VDC) CHECK IC901 PIN 6 TROUBLE IN WAVEFORM (SQUARE WAVE IC901 COMES OUT?) CHECK TROUBLE IN D941, D951,...
  • Page 12 2. NO CHARACTER NO CHARACTER CHECK TROUBLE IN IC302 P302 5V LINE PIN 7 (5V) ? TROUBLE IN CHECK PC SIGNAL, IC302 PIN 1, 3, 5 ? P301 SIGNAL CABLE CHECK TROUBLE IN IC302 PIN 14, 16, 18 ? IC302 CHECK TROUBLE IN IC303 PIN 7 (105V)
  • Page 13 3. NO RASTER NO VIDEO (POWER INDICATOR ON) CHECK ORANGE DPM MODE POWER INDICATOR (NO H and/or V SYNC) GREEN or ORANGE? GREEN CHECK TROUBLE IN D712 ANODE D712 (-157V)? CHECK TROUBLE IN G1 VOLTAGE? Q799 (-75 ~ -15V) CHECK TROUBLE IN CDT HEAT D941, Q942, Q941...
  • Page 14: No Horizontal Deflection

    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, 65V Q719, Q720, D710 54KHZ, 120V ? CHECK TROUBLE IN Q701 COLLECTOR Q701 WAVEFORM?
  • Page 15 5. TROUBLE IN H-LINEARITY UNBALANCED OF H-LIN. CHECK TROUBLE IN IC401 IC401 (MICOM) PIN 5, 6? CHECK TROUBLE IN Q712, Q713 Q712, Q713, Q715, Q716 Q715, Q716? CHECK TROUBLE IN L703? L703 Cs SIGNAL TABLE TROUBLE IN C722, C726, C729 HORIZONTAL FREQUENCY(fH) 30K ~ 33.9K...
  • Page 16 6. NO VERTICAL DEFLECTION NO V-DEFLECTION (ONE HORIZONTAL LINE) CHECK TROUBLE IN IC601 PIN 2 13V LINE (13V)? CHECK TROUBLE IN IC601 PIN 4 -10V LINE (-10V)? CHECK TROUBLE IN IC701 PIN 5, 23? IC701 TROUBLE IN IC601, V-CIRCUIT - 16 -...
  • Page 17 7. TROUBLE IN OSD (ENTER BUTTON MUST BE PRESSED.) NO OSD CHECK TROUBLE IN IC301 B + ? 5V LINE DC 5V CHECK TROUBLE IN IC301 PIN 5, 10 IC601 PIN8 (V-FBP), WAVEFORM? T701 40V LINE (H-FBP) Pin 10 Pin 5 CHECK TROUBLE IN IC301 PIN 12...
  • Page 18 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? NO H/V SYNC CHECK TROUBLE IN IC401 PIN 13 X401 WAVEFORM? 6MHz...
  • Page 19 9. NO DEGAUSSING NO DEGAUSSING (DEGAUSS ON THE OSD MENU MUST BE PRESSED.) CHECK TROUBLE IN IC401 PIN 1 IC401 (MICOM) (0V)? CHECK TROUBLE IN Q953 COLLECTOR Q953 VOLTAGE? DC 13V CHECK TROUBLE IN P902 ? P902 CHECK TROUBLE IN RL901? RL901 TROUBLE IN...
  • Page 20 10. NO TILT (NO ROTATION ) NO TILT (NO ROTATION) CHECK TROUBLE IN IC401 PIN 21 IC401 ( MI COM) WAVE FORM ? CHECK TROUBLE IN 15V LINE 15V LINE, 6.3V LINE AND 6.3V LINE ? CHECK TROUBLE IN Q503 EMITTER Q501~Q503 VOLTAGE ? TROUBLE IN...
  • Page 21 - 21 -...
  • Page 22: Exploded View

    3091TKB036X CABINET ASSEMBLY, CB553H BRAND B031 NON-REGULATION -For Thailand: (CB553H-ZL) 3091TKB036Z CABINET ASSEMBLY, CB553H BRAND B031 NON-MPR-II LG LOGO RED -For Panama, Mexico, Brazil: (CB553H-AL) CABINET ASSEMBLY, CB553H BRAND B031 MPR-II LG LOGO RED -For Mexico, Brazil: (CB553H-ML) 3091TKB036Y 2423GB0A81Z CDT(CIRC), M36LBL803X 00NLLW LG-PHILIPS Displays 70KHZ 29.1 mm -For S.Africa, USA, Canada: (CB553H-ML)
  • Page 23: 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: 2002. 09. 26. DATE: 2002. 09. 26. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 24 DATE: 2002. 09. 26. DATE: 2002. 09. 26. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C910 0CK27101515 270P 1KV K B TS D720 0DS141489AB 1N4148 TP GRANDE DO-34 500 C911 0CE475CK638 4.7UF SHL,SD 50V M FM5 TP...
  • Page 25 DATE: 2002. 09. 26. DATE: 2002. 09. 26. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION FB903 6210TCE003P BRS2550B BO SUNG 2550MM RA R322 0RD0152Q609 15 1/4W(3 5% TA52 FB904 971-0016 TIN HDC 0.60H R323...
  • Page 26 DATE: 2002. 09. 26. DATE: 2002. 09. 26. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R609 0RN1102F409 11K 1/6W 1% TA52 R771 0RN2001F409 2K 1/6W 1% TA52 R611 0RD0151A609 1.5 OHM 1/2 W (7.0) 5% TA5 R772 0RN2401F409...
  • Page 27 DATE: 2002. 09. 26. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 6600TR1001B HUA JIE NON 12V VERTICAL 1 6600TR1001B HUA JIE NON 12V VERTICAL 1 6600TR1001B HUA JIE NON 12V VERTICAL 1 6600TR1001B HUA JIE NON 12V VERTICAL 1 5240T0B002A W-T 480MM UL1007 AWG 24 -(CB553H-ML) 5240T0B002A...
  • Page 28: Pin Configuration

    PIN CONFIGURATION S1D2519X01 DEFLECTION PROCESSOR FOR MULTISYNC MONITORS BLOCK DIAGRAM - 28 -...
  • Page 29 STV9211 Pin Configuration Pin Description - 29 -...
  • Page 30: Schematic Diagram

    SCHEMATIC DIAGRAM NOTICE Since this is a basic schematic diagram. The value of components and some partial connection are - 30 - - 31 -...
  • Page 31: Printed Circuit Board

    PRINTED CIRCUIT BOARD 1. MAIN BOARD (Component Side) 2. MAIN BOARD (Solder Side) - 32 - - 33 -...
  • Page 32 BLOCK DIAGRAM STV9211 - 34 -...
  • Page 33 Sep. 2002 P/NO : 3828TSL092A Printed in Korea...