LG DC593W Manual
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LG DC593W Manual

LG DC593W Manual

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  • Page 2 CONTENTS SECTION 1 ..SUMMARY SECTION 2 ..CABINET & MAIN CHASSIS SECTION 3 ..ELECTRICAL SECTION 4 ..MECHANISM SECTION 5 ..REPLACEMENT PARTS LIST...
  • Page 3 SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ......1-3 SERVICING PRECAUTIONS ....................1-4 • General Servicing Precautions • Insulation Checking Prodedure • Electrostatically Sensitive Devices SPECIFICATIONS ........................1-5 LOCATION OF CUSTOMER CONTROLS ..................1-6...
  • Page 4 IMPORTANT SAFETY PRECAUTIONS Prior to shipment from the factory, the products are strictly inspected to conform with the recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such com- pliance, it is equally important to implement the following precautions when a set is being serviced.
  • Page 5 SAFETY CHECK AFTER SERVICING Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions. Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards. •...
  • Page 6 SPECIFICATIONS DVD PART Power supply AC 110~240 V, 50/60 Hz Power consumtion Mass 3.0kg(6.6lbs) External dimensions 430 x 88 x 247 (W x H x D) Signal system PAL 625/50, NTSC 525/60 Laser Semiconductor laser, wavelength 650nm Frequency range (digital audio) 4 Hz to 20 kHz Signal-to-noise ratio (digital audio) More than 100 dB (EIAJ)
  • Page 7 LOCATION OF CUSTOMER CONTROLS F R O N T POWER button SKIP/SCAN OPEN/CLOSE button Rewind/FF buttons Channel DVD to VHS EJECT Cassette Programme RECORD Copy button Disc tray button Compartment Selectors button STOP DVD or VHS Display window button mode indicator Remote sensor Video IN Audio IN...
  • Page 8 R E M O T E C O N T R O L OPEN/CLOSE button POWER button VHS MODE button TV/VCR button OUTPUT SELECT button DVD MODE button *DISC MENU button CLK/CNT/DISPLAY ** ARROW buttons button AV button SELECT/ENTER button STOP button SETUP button REC/ITR button...
  • Page 9 SECTION 2 CABINET & MAIN CHASSIS CONTENTS 1. EXPLODED VIEWS ........................2-2 1. Cabinet and Main Frame Section ...................2-2 2. Packing Accessory Section ....................2-4...
  • Page 10 EXPLODED VIEWS 1. Cabinet and Main Frame Section...
  • Page 11 CST (HF380 11255 A2271G HOT 1M 442-681A SPRING DOOR 3580R-T049A DOOR,CASE TRAY (DVD+VCR) 6410RKHJ02A POWER CORD JL-004S H03VVH2-F 2X0.75MM COR 3720R-D050B PANEL,VIDEO BACK(DC593W RCA TU W/O S 51) 3140R-0042A CHASSIS MAIN(DVD+VCR) SCREW 353-051A SCREW SPECIAL 353-051E SCREW SPECIAL (3X12) 353-085E SCREW,DRAWING + 3 D4.0 L10.0 MSWR3/FZMCW-2...
  • Page 12 SHEET (MECH) LDPE 600M 630MM 0.5 VCR_DVD 6850R-CAA26 CABLE,COAXIAL 1200M/M PAL-PAL DOUBLE SHIELD 534-008C BATTERY,MANGANESE AAAM(R03) SEOTONG 1-5 V - 1PA 6611R1G001A PLUG ASSY 1WAY YELLOW GLOBAL 6611R2G001A PLUG ASSY 2WAY RED/WHITE GLOBAL 6711R1P042A REMOTE CONTROLLER ASSEMBLY N6 NOR DC953W LG...

  • Page 13: Table Of Contents

    SECTION 3 ELECTRICAL CONTENTS OVERALL BLOCK DIAGRAM .........................3-2 VCR PART ELECTRICAL TROUBLESHOOTING GUIDE ..................3-3 1. POWER(SMPS) Circuit ..........................3-3 2. SYSTEM/KEY CIRCUIT..........................3-6 3. SERVO CIRCUIT ............................3-7 4. OSD CIRCUIT ............................3-9 5. Y/C CIRCUIT ............................3-10 6. Hi-Fi CIRCUIT ............................3-14 7. Tuner/IF CIRCUIT ...........................3-17 BLOCK DIAGRAMS ..........................3-19 1.
  • Page 14 OVERALL WIRING DIAGRAM...

  • Page 15: Vcr Part

    VCR PART ELECTRICAL TROUBLESHOOTING GUIDE 1. Power(SMPS) CIRCUIT (1) No 5.3VA (SYS/Hi-Fi/TUNER) (2) No 12VA (TO CAP, DRUM MOTOR) NO 5.3VA. NO 12VA. Replace the F101. Is the Vcc(13V) supplied to (+) Check or Replace Is the F101 normal? (Use the same Fuse) terminal in D115 and D117? the D110.
  • Page 16 (4) No 5V (TO DVD) (5) No REG 5V (AVCP) NO 5V. No REG 5V. Is 5.3VA put into the Is 5.3VA put into 5.3VA Line Check. 5.3VA Line Check. the Q113 Emitter? Q117 Collector? Is 33V put into the Is the Q115 Base Check the Power Check 33V Line.
  • Page 17 (8) No -29VA (9) No 8VA NO -29VA. NO 8VA. Check or Replace Check or Replace Is Vcc(13V) supplied to D108. (+) terminal in D114? the D110. Check or Replace Is Vcc(12V) supplied to IC106 Pin1? the D114. Check the Power Is the Q115 Base “H”? Control.

  • Page 18: System/Key Circuit

    2. SYSTEM/KEY CIRCUIT (1) AUTO STOP Auto Stop Does the SW30 waveform Check the Drum Motor appear at the IC501 signal. Pin24? Do T/UP Reel Pulses Do the T-UP Reel Pulses Does 5.2V appear at the appear at the Q514 appear at the IC501 Pin4? RS501? Base terminal ?

  • Page 19: Servo Circuit

    3. SERVO CIRCUIT (1) Unstable Video in PB MODE Unstable Video in PB Mode. Does the Noise level of the screen change periodically? Do the CTL pulses appear Is adjusting the height of at the IC501 Pin37? the CTL Head accurate? Does the CFG waveform Readjust the height of the appear at the IC501...
  • Page 20 2. SERVO CIRCUIT (3) When the Capstan Motor doesn’t run, When the Capstan Motor doesn’t run, Refer to “SMPS(CAPSTAN/12Volt) Does 12VA appear at the PMC01? Trouble Shooting”. Does 2.8V appear at the PMC01? Check the PMC01 and the Capstan Does the PWM signal appear at the Motor Ass’y.

  • Page 21: Osd Circuit

    (3) KEY doesn’t working KEY doesn’t working. Is 5V applied to the IC501 Refer to “SMPS 5.3VA Pin 15? Trouble Shooting”. Does LED or FLD change Replace the defective when a function button is switches. pressed? 4. OSD CIRCUIT (1) No OSD display. No OSD display.

  • Page 22: Y/C Circuit

    5. Y/C CIRCUIT (1) No Video in EE Mode, No Video in EE Mode Does the Video signal Check DVD Video Input (IC802, Pin29), Tuner Video Input appear at the IC301 (TU701 Pin24), Line Video Input (JK801), respectively. Pins28, 30, 31? Is 5.2V applied to the IC301 Check the REG 5V Line.
  • Page 23 3. Y/C CIRCUIT (2) When the Y(Luminance) signal doesn’t appear on the screen in PB Mode, Is 5V applied to the IC301 Check the line of the REG Pins12, 36, 61, 67, 90, 96? 5V Line. (Power Circuit) Is the I C Bus siganl applied Refer to ‘SYSTEM I C BUS...
  • Page 24 3. Y/C CIRCUIT (3) When the C(Color) signal doesn’t appear on the screen in PB Mode, Is 5V applied to the IC301 Check the line of the REG Pins12, 36, 61, 67, 90, 96? 5V Line. (Power Circuit) Does the Color signal Does the X301(3.58MHZ) appear at the IC301 Replace the X301.
  • Page 25 3. Y/C CIRCUIT (4) When the Video signal doesn’t appear on the screen in REC Mode, REC mode Is EE mode normal? Check the EE mode Is brightness ? Is color ? Is the brightness signal sup- Does signal appear at IC301 Pins58, 60? plied to IC301 Pins13,14? Check the power of Pins12,...

  • Page 26: Hi-Fi Circuit

    6. Hi-Fi CIRCUIT (A) No Sound(EE Mode) No Sound. Check the TU Audio of IC801 Check the IC751 Pins30, 31. Pins1, 3. Check the DVD Audio of IC801 Check the DVD MODULE. (P8D01 Pins3, 5). Pins4, 5. Check the AV1 Audio of IC801 Check the Rear Jack.
  • Page 27 3. Y/C CIRCUIT (B) Hi-Fi Playback PB mode No Sound. Check the Vcc of IC801 Check Power. (Pins34, 40) Check the Hi-Fi Selection switch. Check IC501 Pin23 (IC801 Pin41) and the Tape quality. (A.H/SW) Is the RF Envelope at IC801 Pin44 over 2Vp-p? Check IC801 Pin42(Data), Check the parts of µ-COM (IC501 Pins90, 91)
  • Page 28 Hi-Fi REC. It is impossible to record Hi-Fi Audio signal. Check Vcc of IC801.(Pins34, 40) Check Power. Check IC801 Pin42(Data), Pin43(CLOCK). Check ports of µ-CPM. Check Audio input signal of IC801 Do Audio signals appear at IC801 Pins2, 3(TU.A.), 4, 5(DVD.A.), Pins16, 17? 6, 7(AVI.A.), 10, 11(AV2.A.) Do FM Audio signals appear at IC801...

  • Page 29: Tuner/If Circuit

    7. Tuner/IF CIRCUIT (A) No Picture on the TV screen No picture on the TV screen Does the Video signal at Is +33V applied to TU701 Check 33V line. the TU701 Pin24. Pin16? Is +5V applied to TU701 Check 5V line. Pin13? Does the Clock signal Check the lIC Clock Signal...
  • Page 30 (B) No Sound No Sound. Check the Vcc of IC751 Pins1, 11, 19, Check 5.2V Line. 22, 33. Check the Tuner SiF signal at IC751 Check the Tuner SIF of TU701 Pin22. Pin2. Check the oscillator of IC751 Pins5, 6. Replace X751 Check the IIC Clock and Data at IC751 Check the Audio of IC751 Pins30, 31.

  • Page 31: Dvd Part

    DVD PART ELECTRICAL TROUBLESHOOTING GUIDE 1. µ-COM Circuit A. Audio abnormal B. Video abnormal AUDIO ABNORMAL VIDEO ABNORMAL Check Audio jack. Check Video jack. YES (If OK) YES (If OK) Check MPEG_CLK Signal Refer to Video part. of MPEG part. YES (If OK) YES (If OK) Refer to Audio part.
  • Page 32 D. Picture abnormal PICTURE ABNORMAL Check the disc. Refer to Servo part If OK Check MPEG_CLK Signal of MPEG part YES (If OK) Check DSP YES (If OK) Check MPEG YES (If OK) Replace B/D E. Disc Error DISC ERROR Check Disc YES (If OK) Refer to Servo part...

  • Page 33: Mpeg Circuit

    2. MPEG Circuit Power is on Does Logo appear Check power & clock. on the screen? Does the Check CD/DVD DSP output moving picture of the DVD Disc Is MPEG data signal normal? play on the screen signal. normally? Check MPEG Decoder input signal.

  • Page 34: Rf/Servo Circuit

    3. RF/Servo Circuit CHECK POINT(General) Does signal goes "High" to IC201 Pin194 when the power is on? Does signal pulse Check "2.µ-COM Part". input to IC201 Pins 58, 59 when the powe is on? Does Does Replace X301 or IC304 TTL pulse output to 33.8688MHz clock input IC201 Pins 140, 142?
  • Page 35 No disc .Power on Check loading Part. Push Pick-up to inner track to Does tray open or close? the end by hand. Does DECK assembly is defective. PMD03 Pin 13 change (Limit sw) high to low? Pressing the open/close key repeatedly, check the voltage of IC2M1 check µ-COM Part.
  • Page 36 DISC IN OPEN/CLOSE Fig.3. FOCUS ERROR waveform Check Check IC2A1 Pin 11,12,13,14 the focus error moving the FOCUS ON? lens up and down. in DVD Mode (IC2A1 Pin 42) IC201 no output : Pick-up is defective. Does the TTL level change at IC201 Replace IC201.
  • Page 37 CHECK A Fig.5. RF waveform Check RF Eye-Pattern. Check IC2A1 Pins 5, 6, 7, 8. No signal: Pick-up is defective RF : 1.5-1.6V(IC2A1 Pin 57) Does the sawtooth waveform emit Is the eye-pattern vivid? Does the 1.6V emit? Replace IC2A1. at IC2A1 Pin 41? Replace IC201.

  • Page 38: Block Diagrams

    BLOCK DIAGRAMS 1. DVD OVERALL BLOCK DIAGRAM DV4000's 3-56...

  • Page 39: Rf/Cd Dsp/Dvd Dsp/Dvd Servo Block Diagram

    2. RF/CD DSP/DVD DSP/DVD SERVO BLOCK DIAGRAM DV4000's 3-57...

  • Page 40: Audio Block Diagram

    3. AUDIO BLOCK DIAGRAM DV4000's 3-58...

  • Page 41: Mpeg Block Diagram

    4. MPEG BLOCK DIAGRAM DV4000's 3-59...

  • Page 42: Μ-Com Block Diagram

    5. µ-COM BLOCK DIAGRAM 3-60...

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