LG KR-RH750THTS Service Manual
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LG KR-RH750THTS Service Manual

LG KR-RH750THTS Service Manual

Hdd/dvd recorder receiver system
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P/NO : 3829RGP020T
OCTOBER, 2005
HDD/DVD Recorder Receiver System
SERVICE MANUAL
MODELS : KR-RH750THTS/LH-RH7505TA/
LH-RH7506TA/LH-RH7700T
KR-RH750THTS/
LHS-75TA5S/LHS-75TA5C/LHS-75TA5A
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.

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  • Page 1 HDD/DVD Recorder Receiver System SERVICE MANUAL MODELS : KR-RH750THTS/LH-RH7505TA/ LH-RH7506TA/LH-RH7700T KR-RH750THTS/ LHS-75TA5S/LHS-75TA5C/LHS-75TA5A CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. P/NO : 3829RGP020T OCTOBER, 2005...
  • Page 2 SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ..... 1-2 SERVICING PRECAUTIONS ....................1-3 THE STEPS FOR CHANGE THE OPTION CODE ............1-4 SPECIFICATIONS ........................1-5...

  • Page 3: Product Safety Servicing Guidelines For Video Products

    When servicing this product, under no circumstances should the original design be modified or altered without permission from LG Electronics Corporation. All components should be replaced only with types identical to those in the original circuit and their physical location, wiring and lead dress must conform to original layout upon completion of repairs.

  • Page 4: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION: Before servicing the DVD Recorder Combi Electrostatically Sensitive (ES) Devices Receiver covered by this service data and its supplements Some semiconductor (solid state) devices can be damaged and addends, read and follow the SAFETY PRECAUTIONS. easily by static electricity. Such components commonly are NOTE: if unforeseen circumstances create conflict between called Electrostatically Sensitive (ES) Devices.

  • Page 5: The Steps For Change The Option Code

    THE STEPS FOR CHANGE THE OPTION CODE Push Switch POWER ON/ OFF at remocon or timer keyborad Select DVD MODE at the set DETECT NEW EEPROM (OPTION EDIT SCREEN) use remocon or timer keyborad NAME BINARY OPT1 00000000 Push REC+ PLAY OPT2 00000000 at timer keyboard...

  • Page 6: Specifications

    SPECIFICATIONS GENERAL Power requirements AC 200-240V, 50/60 Hz Power consumption Dimensions (approx.) 430 X 49 X 350 mm (w x h x d) without foot Mass (approx.) 4.6 kg Operating temperature 5°C to 35°C Operating humidity 5 % to 90 % Recording format RECORDING Recording format...
  • Page 7 295 x 432 x 414 mm Net Weight: 1.1 kg 1.2 kg 14 kg SPEAKERS(LHS-75TA5) SATELLITE CENTER ACTIVE SUBWOOFER (LHS-75TA5S/KR-RH750THTS) (LHS-75TA5C/KR-RH750THTS) (LHS-75TA5A/KR-RH750THTS) Power consumption: Type: 1 Way 2 Speaker 1 Way 2 Speaker 1 Way 1 Speaker 6 Ω 6 Ω...

  • Page 8: Table Of Contents

    SECTION 2 EXPLODED VIEWS CONTENTS EXPLODED VIEWS ........................2-2 1. Cabinet and Main Frame Section ...................2-2 2. Deck Mechanism (RL-05) ......................2-3 3. SPEAKER Section ........................2-4 1) Woofer Speaker Section .....................2-4 2) Center Speaker Section (OPTIONAL PART) ..............2-5 3) Rear Section (OPTIONAL PART)..................2-6 4) Front Speaker Section (OPTIONAL PART) ...............2-7 5) Center Speaker Section (OPTIONAL PART) ..............2-8...

  • Page 9: Exploded Views

    EXPLODED VIEWS 1. CABINET AND MAIN FRAME SECTION...

  • Page 10: Deck Mechanism (Rl-05)

    2. DECK MECHANISM SECTION (RL-05)

  • Page 11: Speaker Section

    3. SPEAKER SECTION 1) WOOFER SPEAKER SECTION (LHS-75PA5A/LHS-75TA5A/LHS-75SA5A/LHS-95PA5A/LHS-95TA5A/LHS-95SA5A)

  • Page 12: Center Speaker Section (Optional Part)

    3. SPEAKER SECTION 2) CENTER SPEAKER SECTION (OPTIONAL PART) (LHS-75PA5C/LHS-75TA5C/LHS-95PA5C/LHS-95TA5C)

  • Page 13: Rear Section (Optional Part)

    3. SPEAKER SECTION 3) REAR SECTION (OPTIONAL PART) (LHS-75PA5S/LHS-75SA5S/LHS-95PA5S/LHS-95SA5S)

  • Page 14: Front Speaker Section (Optional Part)

    3. SPEAKER SECTION 4) FRONT SPEAKER SECTION (OPTIONAL PART) (LHS-75PA5F/LHS-75TA5S/LHS-95PA5F/LHS-95TA5S)

  • Page 15: Center Speaker Section (Optional Part)

    3. SPEAKER SECTION 5) CENTER SPEAKER SECTION (OPTIONAL PART) (LHS-75SA5C/LHS-95SA5C)
  • Page 16 SECTION 3 ELECTRICAL CONTENTS OVERALL WIRING DIAGRAM WOOFER PART ......3-2 HDR PART ELECTRICAL TROUBLESHOOTING GUIDE ................3-66 ELECTRICAL TROUBLESHOOTING GUIDE BLOCK DIAGRAMS ................3-2 ..........3-67 1. SMPS I/O PART ............3-2 1. WIRING DIAGRAM 2. SMPS DVD/HDD PART...........3-5 2. BLOCK DIAGRAM..........3-69 3. SYSTEM CIRCUIT PART ........3-8 4.

  • Page 17: Hdr Part

    HDR PART ELECTRICAL TROUBLESHOOTING GUIDE 1. SMPS I/O PART No 5.3VA Replace the F101 Is the F101 Normal? (Use the same Fuse) Is the BD101 Normal? Replace the BD101 Is the R101 Normal? Replace the R101 Is the Vcc (10V - 17V) Is the D102 normal? supplied to IC101 Pin2? Check or Replace the...
  • Page 18 No 5VT No 5VD Is the Vcc(14V) sup- Check or Replace Is the Vcc(14V) sup- Check or Replace plied to Q124 Emittor? the D126 plied to Q120 Emittor? the D126 Is the Vcc(33V) sup- Check the ‘TIMER “H”’ Is the Q120 Base Check the ‘Power CTL plied to Q124 Base? signal from µ-com...
  • Page 19 NO VFD No 33V Is the R107 Check or Replace Is the Vcc(33V) sup- Check or Replace Normal? the R107 plied to Q123 Emittor? the D130 Is the D128 Check or Replace Is the Q123 Base Check the ‘PWR CTL Normal? the D128 ‘H’?

  • Page 20: Smps Dvd/Hdd Part

    2. SMPS DVD/HDD PART No 3.8VA Replace the F101 Is the F101 Normal? (Use the same Fuse) Is the BD101 Normal? Replace the BD101 Is the TH01 Normal? Replace the TH01 Is Vcc (11V -18V) supplied Is the Q111 normal? to IC101 Pin3? Check or Replace the Q111 Are the D122 normal?
  • Page 21 No 3.3V No 3.3V Is there about 3.8V at Check or Replace Is there about 3.8V at Check or Replace the IC154 pin1? the D122 the IC154 pin1? the D122 Is there about 3.3V~ Check the ‘PWR CTL Is there about 3.3V~ Check the ‘PWR CTL 5V at the IC154 pin4? “H”’signal from µ-com...
  • Page 22 No 1.8V No 12V Is there about 2.3V at Check or Replace Is there about 13.5V Check or Replace the IC160 pin1? the D123 at the IC157 pin1? the D125 Is there about 3.3V~ 5V Check the ‘PWR CTL Is there about 3.3V~ 5V Check the ‘PWR CTL at the IC160 pin4? “H”’signal from µ-com...

  • Page 23: System Circuit Part

    3. SYSTEM Circuit PART “Please wait” displayed Continue at Power On Check PIM02-22 IC307-5: (/HOST-RESET) IC501-19 X101: Clock oscillated? Replace X101 (27MHz) Check IC206 & (Flash R146 : IC206-26 : MENORY) IC101 R180, R181 : IC101 DEFECT 4. DISC not recognized Check DRIVER Power? Check SMPS 5V.

  • Page 24: When Playing Disc, No Audio Output

    5. When playing DISC, no Audio output IC715-pin15,18 IC101 CHECK (Audio_out R/L) : Is DEFECT IC715-pin1,2,3,4 : there a signal? Pin10(reset) Pin7,8(I IC715-pin14,19(z_mute_R/L): CHECK Q705, CHECK IC714-pin3, 6, IC701-pin58(A_mute_L) : Q711, Q712 13(VCC) C841, C842, C7H1, C759 on Replace IC714 I/O PCB Is there a signal? CHECK IC709-pin21, 22, 25,...

  • Page 25: Optical/Digital Output

    6. No OPTICAL/DIGITAL Output R101: CHECK PIM02-pin2 (SPDIF_OUT) : IC101 DEFECT 3-10...

  • Page 26: Tuner Audio Output

    7. No TUNER Audio Output TU701-pin13(SIF): Is there a signal? Check C707 IC701-30,31: Is there a signal? Is there a signal? CHECK IC709-pin20,24,23,27 : IC709-pin2,4(VCC) : Replace IC709 Is there a signal? pin32,33(SLC/CLK) : IC703pin7, IC704-pin7: Check R704,R705: Is there a signal? IC714-pin10,12: CHECK Is there a signal?

  • Page 27: External Input Audio

    8. No External input Audio < AV1/AV2 > < AV3 > < AV4 > IC703,IC704-pin3: IC703,IC704-pin5: IC703,IC704-pin1: Is there a signal? Is there a signal? Is there a signal? IC709-pin8,10,14,16 IC703-pin7, IC704- Check R704,R705: CHECK Cable connec- : Is there a signal? pin7:Is there a signal? tions &...

  • Page 28: Rgb/Component Video Signal When Play Disc

    9. No RGB/Component Video signal when play DISC R131,R132,R133: Is there a signal? DIM02-7,8,9: Is there a signal? IC716-pin24,21,18 CHECK IC716- Is there a signal? pin1,16(+5.2V) CHECK SW701 statue & Replace IC716 SW801-in2(RGB_SEL”H”) 10. No composite/s-video Signal when play DISC R128,R129,R130: Is there a signal? PIM02-2,4,6:...

  • Page 29: Tv, External Input Video Signal

    11. No TV, External input Video signal No video signal of external No video signal of external When Cable connecting Tuner and Rear input AV3 (Rear RCA input) input AV4 (composite,s-video) SCART1,2 No TV video signal(AV1/2) C538:Is there a C532,C535,C537: CHECK Signal path C540 : Is there a signal?

  • Page 30: Dv(Ieee 1394)Input(Video/Audio) Signal

    12. No DV(IEEE 1394)input(Video/Audio) signal check DV_Jack and CABLE(CN501) connection DV-mode Change to DV-mode. switching ? Using Remote Control CHECK SMPS IC401 power 3.3V +3.3V IC401-37: “High” CHECK Reset &X401 oscillated?(24.576MHz) Circuit IC401-15 Check DV Cable Is there a signal? IC401-pin1, 27, 28, 29, Replace IC401 30: Is there a signal?

  • Page 32: Block Diagrams

    BLOCK DIAGRAMS 1. OVERALL H/W BLOCK DIAGRAM A3_In DDR SDRAM S1 / S2 MAIN Bíd 32MB x2 32MB x2 I/O B'd N/A2 MSP3417 VOUT_CVBS CVBS_Out A_ADC VOUT_Y_C S_VIDEO_Out AI_D0 Tuner CS5340 VOUT_Y/Pb/Pr_R/G/B Y/Pb/Pr or R/ G/B 9Pin Din Jac k S/PDIF A0_IEC958 Active WOOFER...

  • Page 33: Layout Connection Block Diagram

    2. LAYOUT CONNECTION BLOCK DIAGRAM Main Bd' In / Out Bd' SMPS Load er Jack 8-in-2 Memory Timer 1(K ey) 3-18 3-19...

  • Page 34: Smps Block Diagram

    3. SMPS BLOCK DIAGRAM RECTIFIER & T101 R101 SMOOTING BLOCK BD101 TO I/O (D128,C133,R107 RECTIFIER & (P1701) R128,R129) SMOOTING BLOCK 5.3VA (D127,C131,L125,C132) SNUBBER RECTIFIER & PWR CTL 'H' BLOCK 12V REG & S/W Block C103 SMOOTING BLOCK (D101,C105 (IC153,R147,C128) (D126,C136) C106,R103) 33VT 12VT REG &...

  • Page 35: In/Out Block Diagram

    4. IN/OUT BLOCK DIAGRAM AMP DATA IN/OUT FRONT JACK AMP CLK/ENA FRONT JACK I/O JACK I/O U-COM AMP ON A2 L/R IN V2 IN Y/C IN JK 708 DAV C_SYNC_IN V1 IN 9 PIN CONNECTOR A1 L/R IN SDA5650 MM1109 TUNER TU_V_OUT MM1510...

  • Page 36: Video Block Diagram

    5. VIDEO BLOCK DIAGRAM RF SIGNAL TU_VZ_IN TU701 TU_V_OUT TVP5146 VIDEO DECODER EU2_V_OUT EU2_V_IN IC709 MM1443 Audi o Vi deo Switching EU1_V_IN EU1_V_OUT R_SCART_OUT B_SCART_OUT CVBS_OUT G_SCART_OUT IC501 IC711 IC710 IC712 AV MICOM Panasoni c RGB_CONT MM1225 MM1225 MM1225 Y_OUT RCA_V_OUT C_OUT V0(0:15)

  • Page 37: Audio Block Diagram

    6. AUDIO BLOCK DIAGRAM AMP DATA IN/OUT AMP CLK/ENA OPT IN AMP ON JK 707 JK 708 9 PIN CONNECTOR IC812 IC 501 MSP3417 IC703,704 F_A_L/R_IN I2 C PANA SONIC AUDIO AUDIO S/W MN101DF R_A_L/R_INC PROCESSOR A MUTE-L NJM2521 FRONT/REAR SIF IN RCA JAC K IN I2 C...

  • Page 38: Circuit Diagrams

    2. Voltages are DC-measured with a digital voltmeter MODIFIED OR ALTERED WITHOUT PERMISSION IMPLEMENTATION OF THE LATEST SAFETY AND during Play mode. FROM THE LG ELECTRONICS CORPORATION. ALL PERFORMANCE IMPROVEMENT CHANGES INTO COMPONENTS SHOULD BE REPLACED ONLY WITH THE SET IS NOT DELAYED UNTIL THE NEW SERVICE TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR- LITERATURE IS PRINTED.

  • Page 39: I/O Micom Circuit Diagram

    2. I/O MICOM CIRCUIT DIAGRAM 3-30 3-31...

  • Page 40: I/O Circuit Diagram

    3. I/O CIRCUIT DIAGRAM 3-32 3-33...

  • Page 41: Lsi Circuit Diagram

    4. LSI CIRCUIT DIAGRAM 3-34 3-35...

  • Page 42: Flash/Ddr Circuit Diagram

    5. FLASH/DDR CIRCUIT DIAGRAM 3-36 3-37...

  • Page 43: Reset/Ratch Circuit Diagram

    6. RESET/RATCH CIRCUIT DIAGRAM 3-38 3-39...

  • Page 44: Hdmi/Iee1394 Circuit Diagram

    7. HDMI/IEE1394 CIRCUIT DIAGRAM 3-40 3-41...

  • Page 45: Video Decoder Circuit Diagram

    8. VIDEO DECODER CIRCUIT DIAGRAM 3-42 3-43...

  • Page 46: Interface Circuit Diagram

    9. INTERFACE CIRCUIT DIAGRAM 3-44 3-45...

  • Page 47: Front Circuit Diagram

    10. FRONT CIRCUIT DIAGRAM 3-46 3-47...

  • Page 48: Front Pwr Keycircuit Diagram

    11. FRONT PWR KEYCIRCUIT DIAGRAM 3-48 3-49...

  • Page 49: Front Jack Circuit Diagram

    12. FRONT JACK CIRCUIT DIAGRAM 3-50 3-51...

  • Page 50: Circuit Voltage Chart

    • CIRCUIT VOLTAGE CHART MODE MODE MODE MODE PLAY PLAY PLAY PLAY PIN NO. PIN NO. PIN NO. PIN NO. I C 4 0 2 0.93 1.50 1.30 1.10 3.30 3.30 3.27 3.24 0.09 0.96 0.60 0.40 5.03 5.03 0.00 0.00 1.65 1.66...

  • Page 51: Printed Circuit Diagrams

    PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD (TOP VIEW) LOCATION GUIDE 3-54 3-55...

  • Page 52: Main P.c.board (Bottom View)

    2. MAIN P.C.BOARD (BOTTOM VIEW) LOCATION GUIDE 3-56 3-57...

  • Page 53: Power P.c.board

    3. POWER P.C.BOARD LOCATION GUIDE 4. JACK P.C.BOARD 3-58 3-59...

  • Page 54: I/O P.c.board (Top View)

    5. I/O P.C.BOARD (TOP VIEW) 3-60 3-61...

  • Page 55: I/O P.c.board (Bottom View)

    6. I/O P.C.BOARD (BOTTOM VIEW) 3-62 3-63...

  • Page 56: Key P.c.board

    7. KEY P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 8. TIMER P.C.BOARD (TOP VIEW) (BOTTOM VIEW)

  • Page 58: Woofer Part

    WOOFER PART ELECTRICAL TROUBLESHOOTING GUIDE INSERT POWER CORD. TURN ON CHECK POWER PLUG THE RED LED? AND POWER SUPPLY CIRCUIT. TURN POWER ON. IS POWER ON CHECK POWER SUPPLY CIRCUIT. THE BLUE LED AND DIN CABLE IC701,702,703,704 DOES IT OUTPUT ' 2' ,'3 ' PIN VOLTAGE IS HIGH?.

  • Page 60: Block Diagrams

    BLOCK DIAGRAMS 1. WIRING DIAGRAM 3-65 3-66...

  • Page 61: Block Diagram

    2. BLOCK DIAGRAM 3-67 3-68...

  • Page 62: Circuit Diagrams 1. Smps Circuit Diagram_700W

    CIRCUIT DIAGRAMS 1. SMPS CIRCUIT DIAGRAM_700W 3-69 3-70...

  • Page 63: Smps Circuit Diagram_1200W

    2. SMPS CIRCUIT DIAGRAM_1200W 3-71 3-72...

  • Page 64: Amp Circuit Diagram

    3. AMP CIRCUIT DIAGRAM 3-73 3-74...

  • Page 65: Micom & Dsp Circuit Diagram

    4. MICOM & DSP CIRCUIT DIAGRAM 3-75 3-76...

  • Page 66: Dsp Circuit Diagram

    5. DSP CIRCUIT DIAGRAM 3-77 3-78...

  • Page 67: I/O Jack Circuit Diagram

    6. I/O JACK CIRCUIT DIAGRAM 3-79 3-80...

  • Page 68: Printed Circuit Diagrams

    PRINTED CIRCUIT DIAGRAMS 1. MAIN & WOOFER P.C.BOARD (TOP VIEW) 3-81 3-82...

  • Page 69: Main & Woofer P.c.board (Bottom View)

    2. MAIN & WOOFER P.C.BOARD (BOTTOM VIEW) 3-83 3-84...

  • Page 70: Power P.c.board

    3. POWER P.C.BOARD LOCATION GUIDE LOCATION GUIDE 3-85 3-86...

  • Page 71: I/O Jack P.c.board

    4. I/O JACK P.C.BOARD 3-87 3-88...
  • Page 72 SECTION 4 RL-05 LOADER PART CONTENTS ELECTRICAL TROUBLESHOOTING GUIDE ......................4-2 WAVEFORMS .................................4-16 1. POWER & RESET SIGNAL ............................4-16 2. MAIN CLOCK1 FOR IC202 (16.9MHZ)........................4-16 3. SDRAM CLOCK .................................4-17 4. TRAY OPEN/CLOSE SIGNAL 1..........................4-17 5. TRAY OPEN/CLOSE SIGNAL 2..........................4-18 6. SLED MOVE SIGNAL 1 .............................4-18 7.

  • Page 73: Electrical Troubleshooting Guide

    ELECTRICAL TROUBLESHOOTING GUIDE Reset or Power Check. Check it after connecting the power cable only for NO Reset or Power ON. •Check the power(5V,12V)short. Are the pin 4, 1 of LCN202 •Check the power cable. +12V, +5V respectively after the power •Repair the power part.
  • Page 74 System Check Load tray without inserting disc. Does tray operate normally? Go to “Tray operating is abnormal” Does pick-up move to inside? Go to “Sled operating is abnormal” Go to “Focus Actuator operating is Does pick-up lens move abnormal” up/down? Go to “Laser operating is abnormal”...
  • Page 75 Tray operating is abnormal Tray open doesn ’t work. Is the Input voltage 0V at LIC301 •Check the connection of LIC301 pin 106. pin 60 when push the •Replace the EJECT SW. EJECT SW? Is there tray •Replace the LIC502. control signal input? •Check the communication line between (LIC502 pin46)
  • Page 76 Sled operating is abnormal Is there sled control signal output? Replace the LIC301 (LIC301 pin 126, 127) Is there •Replace the IC102. sled drive signal input? •Check the LR532, LR533. (LIC502 pin 29, 30) Is there Is DRV-CTRL1 sled drive voltage output? signal “H”? (LIC502 pin 37~40) (LIC502 pin35)
  • Page 77 Spindle operating is abnormal Is there Is there spindle control DSP spindle control signal input? output(LIC301 pin 123)? (LIC502 pin 26) •Replace the LIC301 Replace the LIC301. Is there Is there spindle drive voltage output? SFG signal input? (LIC502 pin 11,13,16) (LIC301 pin 53) Replace the Spindle Motor •Replace the LIC102.
  • Page 78 Focus Servo is unstable Is FE signal output normal in Focusing Replace the LIC201. Up/Down? (LIC201 pin 87) Is FDRV signal output normal in Focusing •Check the R534. Up/Down? •Replace the LIC201. (LIC301 pin 124) Go to “Focus Actuator operating is abnormal” Focus Actuator operating is abnormal.
  • Page 79 Track Servo is unstable Is TE signal Is pick-up output normal in focusing (E, F, G, H)output normal? ON and tracking OFF? (LCN201 pin 5, 8, 9, 12) (LIC201 pin 85) Replace the LIC201. •Check the pick-up FFC. •Replace the pick-up. •After replacing Perform 5.
  • Page 80 Recognition Fail Case 1: CD-ROM Fail Check pick-up read power Go to “LD CHECK”. is 0.9~1.3mW? Does focus servo Go to “Focus Servo is unstable”. operate normally? Check pick-up •Check the pick-up FFC and LCN201. RF signal LIC201(Pin113) is •Replace the pick-up unit. 500~1000mVpp? Check RFEQO waveform Replace the LIC201...
  • Page 81 Recognition Fail Case 2:DVD Fail Check pick-up read power Go to “LD CHECK”. was 0.9~1.1mW? Is LIC201 pin 51(CD/DVD) level Replace the LIC201. was about 0V? Is there RF signal at LCN201pin 13,14. Replace the pick-up. Is there RF signal Replace the LIC201 at LIC201 pin 95.
  • Page 82 LD CHECK (Laser operating is abnormal) Perform 6. Optical Power Setting parameter check from‘How to use Test tool’. Execute “C.Laser Power Setup”of Is ALPC parameters “How to use Test Tool” valid? Perform 4. LD Test check from ‘How to use Test tool’. Check reference voltage.
  • Page 83 CD/DVD ? Select Mode: CD, Test and perform Select Mode: DVD, Test and perform Test from 4. LD Test of ‘How to use Test from 4. LD Test of ‘How to use Test tool’ Test tool’ Check the input of CD/DVD. Check the input of CD/DVD.
  • Page 84 Select Mode: DVD, Test and perform Select Mode: DVD, Test and perform Test from 4. LD Test of ‘How to use Test from 4. LD Test of ‘How to use Test tool’ Test tool’ Check the input of CD/DVD. Check the input of CD/DVD. (pin 17 of LCN201 : ‘L’) (pin 17 of LCN201 : ‘L’) Check the input of VWDC.
  • Page 85 In case of writing fail. Normal Case Check the media Check disc label. DVD ±R/RW? Does the disc Remove the dust,fingerprint and have any dust,scratch, if the disc has long width scratch, fingerprint …? change it. Finalized Disc? Eject disc. If DVD ±R disc,use new DVD ±...
  • Page 86 Writing Part Check Load tray with DVD ±R/RW disc. Press the “REC” key. Does writing finish without any error? Is the written file Eject tray. read normally? Go to “LD CHECK”. Is the re-written file read normally? Is SHAPCRE input signal pulse? (LIC01 pin 62) Check and replace the connection of Check and replace LIC201, LIC301.

  • Page 87: Waveforms

    WAVEFORMS 1. POWER & RESET Signal 12 V(LCN302 PIN4) 5V(LCN302 PIN 1) /HRST(LIC303 PIN 3) /SYSRST(LIC303 PIN2) POWER IN 2. Main Clock1 for IC202 (16.9MHz) LX301(LIC301 PIN 2) GND LEVEL 4-16...

  • Page 88: Sdram Clock

    3. SDRAM Clock MCLK(LIC304 PIN 35) 4. TRAY OPEN/CLOSE SIGNAL 1 /EJECT-KEY (LR504) TRAY-CTRL (LIC502 PIN46) TRAY+(LCN504 PIN 3) TRAY-(LCN504 PIN 4) CLOSE OPEN 4-17...

  • Page 89: Tray Open/Close Signal 2

    5. TRAY OPEN/CLOSE SIGNAL 2 /EJECT-KEY(LR504) TRAY-CTRL(LIC502 PIN46) /OPEN-SW(LCN504 PIN 1) /LOAD-SW (LCN504 PIN 2) CLOSE OPEN 6. SLED MOVE SIGNAL 1 SDRV2(LIC502 PIN31) SDRV1(LIC107 PIN29) A+(LCN501PIN 2) A-(LCN1501 PIN 1) ZOOM 4-18...

  • Page 90: Sled Move Signal 2

    7. SLED MOVE SIGNAL 2 SDRV2(LIC502 PIN31) SDRV1(LIC107 PIN29) A+(LCN501PIN 2) A-(LCN1501 PIN 1) 8. FOCUS SEARCH SIGNAL FDRV (LIC502 PIN 5) F+ (LIC502 PIN 52) F- (LIC502 PIN 51) 4-19...

  • Page 91: Laser Turn On Signal

    9. LASER TURN ON SIGNAL F+ (LIC502 PIN 52) LDEN-DVD(LCN201 PIN17) VRDC(LCN201PIN 34) 4-20...

  • Page 92: Disc Type Judgement Waveform (Cd Series)

    10. DISC TYPE JUDGEMENT WAVEFORM (CD SERIES) FDRV(LIC502 PIN 5) FE(LIC201 PIN87) TE(LIC201 PIN85) RF(LIC201PIN 113) 11. DISC TYPE JUDGEMENT WAVEFORM (CD&CD-R) FDRV(LIC502 PIN 5) FE(LIC201 PIN87) TE(LIC201 PIN85) RF(LIC201PIN 113) 4-21...

  • Page 93: Disc Type Judgement Waveform (Cd-Rw)

    12. DISC TYPE JUDGEMENT WAVEFORM (CD-RW) FDRV(LIC502 PIN 5) FE(LIC201 PIN87) TE(LIC201 PIN85) RF(LIC201PIN 113) 13. DISC TYPE JUDGEMENT WAVEFORM (DVD SERIES) FDRV(LIC502 PIN 5) FE(LIC201 PIN87) TE(LIC201 PIN85) RF(LIC201PIN 113) 4-22...

  • Page 94: Disc Type Judgement Waveform (Dvd_Single&R)

    14. DISC TYPE JUDGEMENT WAVEFORM (DVD_SINGLE&R) FDRV(LIC502 PIN 5) FE(LIC201 PIN87) TE(LIC201 PIN85) RF(LIC201PIN 113) 15. DISC TYPE JUDGEMENT WAVEFORM (DVD _DUAL) FDRV(LIC502 PIN 5) FE(LIC201 PIN87) TE(LIC201 PIN85) RF(LIC201PIN 113) 4-23...

  • Page 95: Disc Type Judgement Waveform (Dvdrw)

    16. DISC TYPE JUDGEMENT WAVEFORM (DVDRW) FDRV(LIC502 PIN 5) FE(LIC201 PIN87) TE(LIC201 PIN85) RF(LIC201PIN 113) 17. SPINDLE WAVEFORM1 MDRV (LIC502 PIN 26) REFOUT (LIC502 PIN 42) SFG((LIC502 PIN43) 4-24...

  • Page 96: Spindle Waveform2

    18. SPINDLE WAVEFORM2 U((LIC502 PIN11) V((LIC502 PIN13) W((LIC502 PIN16) SFG(LIC502 PIN43) 19. FOCUS ON SIGNAL(CD) FDRV (LIC301 PIN 124) FE (LIC201 PIN87) TDRV (LIC301 PIN 125) TE (LIC201 PIN85) 4-25...

  • Page 97: Focus On Signal(Dvd)

    20. FOCUS ON SIGNAL(CD) FDRV (LIC301 PIN 124) FE (LIC201 PIN87) TDRV (LIC301 PIN 125) TE (LIC201 PIN85) 21. FOCUS ON SIGNAL(DVD) FDRV (LIC301 PIN 124) FE (LIC201 PIN87) TDRV (LIC301 PIN 125) TE (LIC201 PIN85) 4-26...

  • Page 98: Track Off Signal(Cd)

    22. FOCUS ON SIGNAL (DVD) FDRV (LIC301 PIN 124) FE (LIC201 PIN87) TDRV (LIC301 PIN 125) TE (LIC201 PIN85) 23. TRACK OFF SIGNAL(CD) TE (LIC106 PIN85) TZC(LIC106 PIN74) MIRRBCA(LIC106 PIN77) 4-27...

  • Page 99: Track Off Signal(Dvd)

    24. TRACK OFF SIGNAL(DVD) TE (LIC106 PIN85) TZC(LIC106 PIN74) MIRRBCA(LIC106 PIN77) 25. Tilt Driver signal(Disc reading) TILTDRV(LIC502 PIN47) TILT+(LIC502 PIN50) TILT-(LIC502 PIN49) 4-28...

  • Page 100: Rf Waveform(Dvd)

    26. RF WAVEFORM(DVD) RFP(LIC201 PIN2) RFO(LIC201PIN 113) RFI(LIC201 PIN 95) 27. RF WAVEFORM(CD) RFP(LIC201 PIN2) RFO(LIC201PIN 113) RFI(LIC201 PIN 95) 4-29...

  • Page 101: Wobble(Dvd-R/Rw)_Reading

    28. WOBBLE(DVD-R/RW)_READING AWOBBLE(LIC201 PIN81) LPP/HEAD(LIC201 PIN 73) 29. WOBBLE(DVD+R/RW)_READING& WRITING => X1 SPEED AWOBBLE(LIC201 PIN81) LPP/HEAD(LIC201PIN 73) 4-30...

  • Page 102: Ld Enable(Dvd)

    30. LD Enable(DVD) CD/DVD(LCN201 PIN 17) LDEN(LCN PIN 38) 31. LD Enable(CD) CD/DVD(LCN201 PIN 17) LDEN(LCN102 PIN 38) 4-31...
  • Page 103 32. Laser Power(reading) _ DVD+RW VRDC(LCN201 PIN 34) VWDC(LCN201 PIN 36) VWDC2(LCN201 PIN 35) OPCTRG(LIC301 PIN 151) 33. Laser Power(Erase) _ DVD+RW VRDC(LCN201 PIN 34) VWDC(LCN201 PIN 36) VWDC2(LCN201 PIN 35) OPCTRG(LIC301 PIN 151) 4-32...

  • Page 104: Laser Power(Writing)_Initial State

    34. Laser Power(Writing) _ initial state VRDC(LCN201 PIN 34) VWDC(LCN201 PIN 36) VWDC2(LCN102 PIN 35) OPCTRG(LIC301 PIN 151) 35.Laser Power(Writing)_Processing VRDC(LCN201 PIN 34) VWDC(LCN201 PIN 36) VWDC2(LCN201 PIN 35) 4-33...

  • Page 105: The Difference Of Dvd-R/Rw, Dvd+R/Rw Discs And Dvd-Rom

    The difference of DVD-R/RW, DVD+R/RW discs and DVD-ROM 1. Recording Layer • DVD-ROM (Read Only Disc) 0.4 um • DVD+R/RW Disc 4-34...

  • Page 106: Disc Specification

    2. Disc Specification 3. Disc Materials 1) DVD-ROM < Single Layer > < Dual Layer > 4-35...
  • Page 107 2) Recording format using organic dye material ( DVD-R / DVD+R ) The format that records data through the creation of recorded marks by changing the organic dye material with a laser beam. Disc structure Recording principles [ Recording ] Recording is done by changing the organic dye layer and the substrate with a laser When a strong laser is applied to a disc, the temperature of the organic dye material goes up, the dye is decomposed and the substrate changes at the same time.
  • Page 108 3) Recording format using phase-change recording material ( DVD-RW / DVD+RW ) • Data is recorded by changing the recording layer from the amorphous status to the crystalline status, and played back by reading the difference of the reflection coefficient. Amorphous: Non-crystalline.
  • Page 109 To make recordings, it is necessary to modulate the write pulse, which is called “Write Strategy”. There can be many types in Write Strategy. Typically Write Strategy for DVD ±R has NMP(Non Multi-Pulse) type and MP(Multi-Pulse) type. In NMP type each single mark is created by subsequent separated short pulses. In MP type each single mark is created by one continuous pulse.

  • Page 110: Organization Of The Inner Drive Area, Outer Drive Area, Lead-In Zone And Lead-Out Zone

    4. Organization of the Inner Drive Area, Outer Drive Area, Lead-in Zone and Lead-out Zone 1) Layout of DVD-RO M disc Disc Center Diameter 120 mm Diameter 44mm Diameter 33mm Diameter 22mm Diameter 16mm Diameter 15mm Center Clamping 3th transition Inform ation Zone hole Zone...
  • Page 111 3) Layout of DVD+RW disc Disc Center Diameter 120 mm Diameter 44mm Diameter 33mm Diameter 22mm Diameter 16mm Diameter 15mm Center Clamping 3th transition Inform ation Zone hole Zone area 1th transition area 2th transition area area Unrecorded Disc Lead-in Zone Data Zone Lead-out Zone Outer Disc...
  • Page 112 4) Layout of DVD-R/RW disc Disc Center Diameter 120 mm Diameter 44mm Diameter 33mm Diameter 22mm Diameter 16mm Diameter 15mm Center Clamping 3th transition Unrecorded Disc hole Area area 1th transition area 2th transition area area Inform ation Area R-Information Lead-in Lead-out Data Recordable Area...

  • Page 113: Alpc(Automatic Laser Power Control) Circuit

    5. ALPC(Automatic Laser Power Control) Circuit 1) Block Diagram IC 106 ( uPC3330 ) RLDON ‘H’ CN 102 IC 201 SHAPCRE S/H & VRDC VRDC VR DCG & Gain Optical Pick-up VR DC_ HOP -7521T FPDVC uPD63630 FPDVR EF PDIN Write Strategy Write...

  • Page 114: How To Use Test Tool

    How to use test tool 1. ALPC Measurement System Configuration In order to measure and adjust DVD RW optical power, The following measurement equipments are needed. Compulsory equipment ➀ Optical Power meter & Sensor (ADVANTEST, TQ8210/Q82017A or equivalent ➁ Personal Computer (Pentium 3, 500MHz Above, , RAM:64M Above, Win98 Above) ➂...
  • Page 115 2. ALPC Program Configuration ALPC Program consists of total 4 files. ALPC.exe LgBada.dll modelnm.txt WNASPI32.DLL These 4 files should be located in one directory. ALPC.exe is a program execution file. modelmn.txt is a configuration file. Determine how to connect The following contents are included when you open "modelnm.txt" file. The following contents are included when you open LGE connect=0 connect=0 is the item which you can determine whether you use Serial or ATAPI.
  • Page 116 3. Running ALPC Program When running ALPC.exe file, the following screen appears. CD/DVD Selection ALPC Setup or LD Display what is selected Test Selection in modelnm.txt Result output window Laser Power Setup window Laser Read Laser Write Laser off When Laser EEPROM Used When inputting Power On...
  • Page 117 4 LD Test * Test DVD LD * Test DVD CD ➀ Select DVD mode ➀ Select CD mode ➁ Select Test mode ➁ Select Test mode ➂ Click ➂ Click Test Test Section VRDC VR_FPD VWDC1 VW_FPD VW2-1 VW2-2 2.4±0.08 0.53±0.22 0.02±0.01...

  • Page 118: Optical Power Setting

    5. Optical Power Setting When replacing Travers ass’y including Pick-up or Loader PCB, Optical Power Setting should be performed for Pick-up and Loading PCB’s matching. ➀ DVD LD optocal Power Setting • Select DVD and Setup mode • Push . (Read Power On. Strong Red light can be seen from pick up optical lens.) •...
  • Page 119 6. Optical Power Setting Parameter Check Use when defective happens even though LD test result is normal. When defective can be found but power test result is OK, You need to check current settings whether they are proper or not. In this case, Pressing will display ALPC Parameter Info window and show current optical power settings recorded in EEPROM(IC302).
  • Page 120 [VALID ALPC Parameters] <CD> <DVD> 1) CD-R READ Reference DAC : 70 ~ 100 1) DVD-R READ Reference DAC : 42 ~ 107 2) CD-RW READ Reference DAC : 70 ~ 100 2) DVD-RW READ Reference DAC : 42 ~ 107 3) VWDC1 : 35 ~ 65 4) VWDC1 Offset...
  • Page 121 Appendix. How to measure optical power Optical power measurement is measuring actual optical power coming out from an object lens with LD turned on. thus, In order to measure optical power, LD should to be turned on and environment need to be dark enough. If necessary, Cover the top side of the sensor with black paper or hand when measuring.

  • Page 122: Block Diagrams

    BLOCK DIAGRAMS 1. OVERALL BLOCK DIAGRAM 4-51...

  • Page 123: Dsp Block Diagram

    2. DSP BLOCK DIAGRAM L.P.F 4-52...

  • Page 124: Μ-Com Block Diagram

    3. µ-COM BLOCK DIAGRAM 4-53...

  • Page 125: Rf Block Diagram

    4. RF BLOCK DIAGRAM 4-54...

  • Page 126: Circuit Diagrams

    CIRCUIT DIAGRAMS 1. RF CIRCUIT DIAGRAM 4-55 4-56...

  • Page 127: Dsp Circuit Diagram

    2. DSP CIRCUIT DIAGRAM 4-57 4-58...

  • Page 128: Μ-Com Circuit Diagram

    3. µ-COM CIRCUIT DIAGRAM 4-59 4-60...

  • Page 129: Circuit Voltage Chart

    CIRCUIT VOLTAGE CHART MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE STATE STATE STATE STATE STATE STATE STATE STATE STATE STATE STATE PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO.

  • Page 130: Printed Circuit Diagrams

    PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD LOCATION GUIDE 4-63 4-64...

  • Page 131: Main P.c.board

    2. MAIN P.C.BOARD LOCATION GUIDE 4-65 4-66...

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