LG RH1757 Service Manual
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LG RH1757 Service Manual

LG RH1757 Service Manual

Hdd/dvd recorder
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HDD/DVD RECORDER
SERVICE MANUAL
MODELS : RH1757/RH1858
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.

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Summary of Contents for LG RH1757

  • Page 1 HDD/DVD RECORDER SERVICE MANUAL MODELS : RH1757/RH1858 CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL.
  • Page 2 CONTENTS SECTION 1 ..SUMMARY SECTION 2 ..CABINET & MAIN CHASSIS SECTION 3 ..ELECTRICAL SECTION 4 ..RS-01A LOADER PART SECTION 5 ..REPLACEMENT PARTS LIST...

  • Page 3: Table Of Contents

    SECTION 1 SUMMARY CONTENTS NEW FUNCTIONS OF HDD/DVD-RECORDER ..............1-2 PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ....1-3 SERVICING PRECAUTIONS ....................1-4 • General Servicing Precautions • Insulation Checking Prodedure • Electrostatically Sensitive Devices SERVICE INFORMATION FOR EEPROM IC SETTING ..........

  • Page 4: New Functions Of Hdd/Dvd-Recorder

    NEW FUNCTIONS OF HDD/DVD-RECORDER • HDMI HDMI IS THE SPECIFICATION FOR THE HIGH-DEFINITION MULTIMEDIA INTERFACE. HDMI IS PROVID- ED FOR TRANSMITTING DIGITAL TELEVISION AUDIOVISUAL SIGNALS FROM HDD-DVD RECORDER TO TELEVISION SETS, OTHER VIDEO DISPLAYS. HDMI CAN CARRY HIGH QUALITY MULTI-CHANNEL AUDIO DATA AND CAN CARRY ALL STANDARD AND HIGH DEFINITION CONSUMER ELECTRONICS VIDEO FORMATS.

  • Page 5: 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 6: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION : Before servicing the HDD/DVD Recorder cov- Electrostatically Sensitive (ES) Devices ered by this service data and its supplements and addends, Some semiconductor (solid state) devices can be damaged read and follow the SAFETY PRECAUTIONS. NOTE : if easily by static electricity.

  • Page 7: Service Information For Eeprom Ic Setting

    SERVICE INFORMATION FOR EEPROM IC SETTING MICOM START OPTION CONFIRMATION MODE DETECT NEW EEPROM (OPTION EDIT SCREEN) EEPROM ID CHECK NAME BINARY Press the "CLEAR" key on the 2 BYTE(B3,248,249) OPT1 00000000 Remote controller and the "CH - " OPT2 00000000 key one the Front Panel the same OPT3...

  • Page 8: Specifications

    SPECIFICATIONS • GENERAL Power requirements AC 110-240V, 50/60 Hz Power consumption Dimensions (approx.) 430 X 54 X 275 mm (w x h x d) without foot Mass (approx.) 4.1 kg Operating temperature 5°C to 35°C Operating humidity 5 % to 90 % Television system PAL B/G color system Recording format...
  • Page 9 SECTION 2 CABINET & MAIN CHASSIS CONTENTS EXPLODED VIEWS ........................2-2 1. CABINET AND MAIN FRAME SECTION ................2-2 2. DECK MECHANISM SECTION(RS-01A) ................2-3 3. PACKING ACCESSORY SECTION ..................2-4...

  • Page 10: Exploded Views

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

  • Page 11: Deck Mechanism Section(Rs-01A)

    2. DECK MECHANISM SECTION(RS-01A)

  • Page 12: Packing Accessory Section

    3. PACKING ACCESSORY SECTION OPTIONAL PART 810 CABLE ASS'Y Cable, Coaxial 808 Battery Plug Ass'y, 1Way Remote Control Plug Ass'y, 2Way Instruction Ass'y FLAT CABLE 832 DISC Packing Packing...
  • Page 13 SECTION 3 ELECTRICAL CONTENTS HDR PART ELECTRICAL TROUBLESHOOTING GUIDE ........................3-2 1. POWER SUPPLY ON SMPS BOARD...........................3-2 2. POWER SUPPLY ON I/O BOARD ..........................3-4 3. SYSTEM CIRCUIT PART ..............................3-7 4. DISC NOT RECOGNIZED.............................3-7 5. WHEN PLAYING DISC, NO AUDIO OUTPUT ......................3-8 6.

  • Page 14: Hdr Part

    HDR PART ELECTRICAL TROUBLESHOOTING GUIDE 1. POWER SUPPLY ON SMPS BOARD 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 (13V - 27V) Check or Replace the Is the D102 normal? supplied to IC101 Pin2?
  • Page 15 No 12VL No 5VL Is the 13.5V supplied Check or Replace Is the 5.5V supplied Check or Replace to IC155 pin 1? the D124 to IC156 pin 1? the D125 Is the IC155 pin4 Check the DVD CTL Is the IC156 pin4 Check the DVD CTL ‘H’? “H”...

  • Page 16: Power Supply On I/O Board

    2. POWER SUPPLY ON I/O BOARD No 12V No 5VT Is the VCC (14V) sup- Check D124 on SMPS Is the VCC (5.3V) sup- Check 5.3VA on plied to Q164 Collector? Board and Replace plied to Q155 Emitor? SMPS Board Is there about 12.5V at Check Q164 and Is there about 0V at D152...
  • Page 17 No 5.0VD No 3.3V Is there about 5.3V Check 5.3VA on Is there about 3.8V at Check or Replace at the IC153 pin 1? SMPS Board the IC152 pin1? the D127 Is there about 4V ~ 5V Check the ‘PWR CTL Is there about 4V~ 5V Check the ‘PWR CTL at the IC153 pin 4?
  • Page 18 No SW_FD(+) No 1.8V Is the VCC (FD+) sup- Check D121 on SMPS Is the VCC (3.3V) supplied to Q159 Check 3.3V power plied to Q163 Collector ? Board and Replace Emitor And IC154 pin 1,2,8 ? supply Is there about 5.3V at R184 Check Q163 and Is there about 3V ~ 3.3V at Check Q159 and...

  • Page 19: System Circuit Part

    3. SYSTEM CIRCUIT PART “Please wait” displayed Continue at Power On Check PVM02 pin 13 IC1306 pin 5 : (/HOST-RESET) IC 701 pin 19 (R714) X1101 : Clock oscillated? Replace X1101 (13.5MHz) Check IC1201 (Flash R11A9 : IC1201 pin 32 : Memory) &...

  • Page 20: When Playing Disc, No Audio Output

    5. WHEN PLAYING DISC, NO AUDIO OUTPUT IC808 pin 15,18(Audio_out R/L): IC1101 CHECK Is there a signal? DEFECT IC808 pin 1,2,3,4 : Pin 10 (Reset “H”) Pin 7,8 (I2C) : CHECK CHECK Q802, Q803, IC808 pin 14,19 (Z_mute_R/L) : IC808 pin 17 (12V) Q806, Q807, Q808 IC701 pin 58 (A_mute_L) : pin 5,11,20 (3.3V)

  • Page 21: Optical / Digital Output

    6. NO OPTICAL / DIGITAL OUTPUT R1107 : Is there a signal ? CHECK PVM01 pin 1 (SPDIF_OUT) : R851 : C856 : Is there a signal? Is there a signal ? CHECK BD817 : JK803 pin 2 (5.2V) Is there a signal ? CHECK JK803 &...

  • Page 22: Tuner Audio Output

    7. NO TUNER AUDIO OUTPUT TU701 pin*(16) (SIF) : *OPTION1 : W’s : pin16 Is there a signal? NTSC : pin113 C928, C963 : Is there a signal? IC901 pin 64 Or R999 CHECK IC1302 Reset Circuit (reset “H”) : X901 (24.576MHz) clock oscillated ? R902,R913,R997 :...

  • Page 23: External Input Audio

    8. NO EXTERNAL INPUT AUDIO < AV1 > < AV2 > C979, C980 : C976,C977 : Is there a signal? Is there a signal? CHECK Cable connec- CHECK Cable connec- tions & Input signal. tions & Input signal. IC901 pin 64 or CHECK IC1302 R999 (reset”H”) : Reset Circuit...

  • Page 24: Rgb/Component Video Signal When Play Disc

    9. NO RGB/COMPONENT VIDEO SIGNAL WHEN PLAY DISC (W’S, NTSC’S “RGB WITHOUT) R1153,R1154,R1155 : Is there a signal ? PVM01 pin 2,6,10 : Is there a signal ? IC802 pin 18,21,24 : CHECK IC802 pin Is there a signal? 1,16 (5.2V) CHECK JK802 &...

  • Page 25: Tv, External Input Video Signal

    11. NO TV, EXTERNAL INPUT VIDEO SIGNAL No video signal of external No video signal of external input AV3 (Rear RCA input) input AV4(Composite/S-Video) CHECK Cable con- nection & Input signal C618 : Is there a C917,C923,C934 : signal ? Is there a signal ? IC901 pin 34 Or R999 CHECK IC1302...

  • Page 26: Dv(Ieee 1394) Input (Video/Audio) Signal

    12. NO DV(IEEE 1394) INPUT (VIDEO/AUDIO) SIGNAL Check DV_Jack connection Change to DV-mode. DV-mode switching ? Using Remote Control IC1401 power 3.3V IC1401 power 3.3V IC1401 pin 37 : “High” CHECK IC1302 Reset Circuit & X401 (24.576MHz) oscillated ? IC1401 pin 15 : “High” CHECK DV Cable Is there a signal? IC1401 pin 1,27,28,29,30 :...

  • Page 28: Block Diagrams

    BLOCK DIAGRAMS 1. OVERALL BLOCK DIAGRAM I/O Board MAIN Board V3_In I/O Board V4_In S_In VOUT_CVBS CVBS_Out VOUT_Y/C S_VIDEO_Out VIN_D[9:0] Y/Pb/Pr VOUT_Y/Pb/Pr_R/G/B AV_DEC Opti cal & Di gital AOUT_IEC958 S/PDIF Deco der Audio Out SAA7137 A_DAC: 2ch Ana log AOUT_DO Tuner CS4351 Audio Out...

  • Page 29: Layout Connection Block Diagram_1

    2. LAYOUT CONNECTION BLOCK DIAGRAM_1 Optical AV3/Comp /Digital P104 Video HDMI FD(+) FD(-) SMPS Board -28VA INPUT / OUTPUT Board 14VA PHM01 33VA 3.8VA P1D01 5.3VA PWR_CTL_H PMH10 4pin Jun ction B'd Jun ction B'd ATAPI1 ATAPI 2 MAIN Board 40pin 40pin HARD DISC DRIVE...

  • Page 30: Layout Connection Block Diagram_2

    3. LAYOUT CONNECTION BLOCK DIAGRAM_2 X pin : FFC X pin : B'd to B'd I/O B'd SMPS B'd X pin : B'd in : Harn ess 2pin HDMI SMPS I/O Board 4pin 4pin Jun ction B'd Jun ction B'd Main Board 40pin 40pin...

  • Page 31: Smps Block Diagram

    4. SMPS Block Diagram TRANS RECTIFIER & TO MAIN SMOOTING BLOCK FD(+) TH01 RECTIFIER & FD(-) SMOOTING BLOCK -28VA RECTIFIER & SMOOTING BLOCK 13.5VA FUSE NOISE FILTER (F101) SNUBBER BLOCK 33VA BLOCK (C101,L102, RECTIFIER & BRIDGE (D101,C105 T101 C102) SMOOTING BLOCK 3.8VA DIODE C106,R104)

  • Page 32: Power : Main Board Block Diagram

    5. Power : Main Board Block Diagram 3.3V 3V3A V33_FLASH V33_STB V33_FLASH V33_BREG 3V3D 74LVC08 74LVT16373 FLA SH V33_PHY_A V33_PHY_D 74HCT125 74LVC04 3.3VA TSB41AB1 74LVC541A 74LVT273 DAC 3.3V 1.25V V33_E5_VPAD V33_E5_VDDREF DMN8653 1.8V HDD IF LOADER IF +5V_STB E5_1V25 E5_AVDD1 V18_HDMI E5_AVDD2 AVDD_SYSPLL...

  • Page 33: Power : I/O Board Block Diagram

    6. Power : I/O Board Block Diagram 5.3VA 33VT 5.2V SYS_5.3VA U-COM Video S/W U-COM Tuner (MN101DF10GAF) (BH7868FS) (MN101DF10GAF) V 6dB Amp Reset IC Diff OP AMP (MM1510) Opti cal Driv e (KIA7031P) (NJM4580) PWR Fail (KIA7042) 3.3V 1.8V EEPROM (24LC16B) A/V Decoder (CS4351)

  • Page 34: I/O Block Diagram ( Rca Model Only )

    7. I/O BLOCK DIAGRAM ( RCA MODEL ONLY ) POWER_CTL_H IC705 TIMER_H I2C I/O IC101 24LC16B STANBY_H EEPROM MN101DF10GAF MICOM SW_FD(+) A_MUTE_L IC703 SW_5.3VA CV.IN2 MM1510 BLOCK 6dB Buffer SW_12VG TU_V_OUT TUNER Z_MUTE_L/R AUDIO Mute (M's :NTSC) FD(+) Blo ck SW_A_OUT_L/R FD(-) FRONT.AV IN...

  • Page 35: Video Block Diagram

    8. VIDEO BLOCK DIAGRAM F_Y_IN S-VIDEO IN C_Y_IN JACK F_CVBS_IN FRONT IN IC901 JACK SAA7137 R_CVBS_IN REAR IN JACK DECODER TU_V_OUT SW_V_OUT VIN_D[9:0] 0 ohm Tuner VIN_CLK VIN_INT IC1101 DMM8653 MPEG R_OUT ENC/DEC G_OUT B_OUT R(Pr)_OUT CVBS_OUT SW801 IC802 BH7868FS Y_OUT G(Py)_OUT VIDEO...

  • Page 36: Video S/W Path Block Diagram

    9. VIDEO S/W PATH BLOCK DIAGRAM JK80 8 JK80 2 JK80 2 / JK807 AV4 / S-V TU701 TPA+ F_Y_IN TPA- F_CVBS F_C_IN TPB+ IC1401 TPB- R_CVBS TSB41AB1 VIN_INT IC901 VIN_CLK SW_V_OUT SAA7137 BIO_PHY_D[7:0] (TU/E1/E2) VIN_D[9:0] AV. DEC 0 ohm BIO_LPS TU_V_OUT BIO_PHY_CLK...

  • Page 37: Audio Block Diagram

    10. AUDIO BLOCK DIAGRAM F_A_L_IN FRONT F_A_R_IN JACK R_A_L_IN REAR R_A_R_IN JACK IC901 TUNER SAA7137 AIN_DO DECODER IC_OUT_L TU_L_OUT AIN_SCLK RC Circuit IC_OUT_R TU_R_OUT 0 ohm AIN_FSYNC AIN_MCLK SW_A_OUT_L IC1101 SW_A_OUT_R DMM8653 MPEG DAC_A_L_OUT A_OUT_L IC801 AO_SCLK ENC/DEC BUFFER DAC_A_R_OUT A_OUT_R AO_FSYNC NJM4580...

  • Page 38: Audio S/W Path Block Diagram

    11. AUDIO S/W PATH BLOCK DIAGRAM IC_OUT_L/R IC901 SAA7137 (AV. DEC) IC808 IC801 18(15) 1(7) CS4351 NJM4580 (CODEC) (BUFFER) COAXIAL RC CIRCUIT OPTICAL I/O BOARD DMN8653 MPEG , ENC/DEC MAIN BOARD 3-35 3-36...

  • Page 39: Fld / Μ-Com / Tuner Block Diagram

    12. FLD / µ-COM / TUNER BLOCK DIAGRAM AV. DEC IC901 EEPROM SMPS SAA7137 IC705 X702 X701 POWER BOARD TUNER 24LC16B 14.31818MHz 32.768KHz TU701 I2C_DATA PWR_CTL_H I2C_CLK TIMER_H SMPS Bl ock ON I/O BOARD STANBY_H FLD_CLK SW_V_OUT DRIVER ENA_L G[ 0:16] 0 ohm DIG901 MICOM...

  • Page 40: Main Block Diagram ( Rca Model Only )

    13. MAIN BLOCK DIAGRAM ( RCA MODEL ONLY ) TPA+ HA[5:1][23:22] TPA- HA[5:1][23:22] /E5_LWEn TPB+ /E5_LWEn JACK E5_SDRAM_DQS[1:0] TPB- /E5_OE /E5_OE E5_SDRAM_DQM[1:0] /E5_CS0 IC1201 /E5_CS0 E5_SDRAM_CLK1 HD[15:0] PHY_LINKON MX29LV640MT IC1202 E5_SDRAM_CLK#1 TC-90 PHY_LPS HD[15:0] IC1401 HYB25D512 E5_SDRAM_DQ[15:0] HD[15:0] IC1301 FLASH HD[15:0] PHY_LREQ TSB41AB1...

  • Page 41: Timer Block Diagram

    14. TIMER BLOCK DIAGRAM FD +(SW) FD( - ) 5.3VA(SW) 5.3VA 29VA FLD Driv e IC FLD( - ) FLD( + ) Remoc on Reciver (PT6315) I/O U-COM PWR CTL STANBY_H 5.3VA(SW), FD+(SW) 3-41 3-42...

  • Page 42: 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 43: Smps 2 Circuit Diagram

    2. SMPS 2 CIRCUIT DIAGRAM (W, NTSC) 3-45 3-46...

  • Page 44: Mpeg Circuit Diagram

    3. MPEG CIRCUIT DIAGRAM 3-47 3-48...

  • Page 45: Flash/Ddr Circuit Diagram

    4. FLASH/DDR CIRCUIT DIAGRAM 3-49 3-50...

  • Page 46: Reset & 1394 & Jepg Circuit Diagram

    5. RESET & 1394 & JEPG CIRCUIT DIAGRAM 3-51 3-52...

  • Page 47: Atapi & Memory Card Circuit Diagram

    6. ATAPI & MEMORY CARD CIRCUIT DIAGRAM 3-53 3-54...

  • Page 48: I/O, Μ-Com Circuit Diagram

    7. I/O, µ-COM CIRCUIT DIAGRAM (W, NTSC) 3-55 3-56...

  • Page 49: Tuner/Mpx/Adc/Dac/Jack Circuit Diagram

    8. TUNER/MPX/ADC/DAC/JACK CIRCUIT DIAGRAM (W, NTSC) 3-57 3-58...

  • Page 50: Decoder Circuit Diagram

    9. DECODER CIRCUIT DIAGRAM (W, NTSC) 3-59 3-60...

  • Page 51: Timer Circuit Diagram

    10. TIMER CIRCUIT DIAGRAM 3-61 3-62...

  • Page 52: Waveforms

    • WAVEFORMS X1101 PMV 02 PMV02 PMV02 PMV02 IC1202 X1401 13.5 MHz PIN1 PIN3 PIN29 PIN26 PIN45 24.576MHz HOST_RXD HOST_TXD SDRAM_CLK1 IC1401 PMV01 X901 PMV01 PMV01 PMV01 PMV01 PIN1 PIN9 14.31818MHz PIN18 PIN10 PIN22 PIN2 PHY_CLK VIN_CLK VOUT_CVBS VOUT_G/Y VOUT_C VOUT_R/Pr PMV01 PMV01...

  • Page 53: Circuit Voltage Chart

    • CIRCUIT VOLTAGE CHART MODE MODE MODE MODE MODE MODE MODE PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. IC101 LSI DMN8653 1.32 1.32 1.32 2.01 1.97 1.97 0.35 0.32 0.30 2.35 2.29 2.30 AA25 1.18 1.18...
  • Page 54 MODE MODE MODE MODE MODE MODE MODE PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. AF23 0.00 0.00 0.00 0.00 0.00 0.22 0.24 0.19 0.14 0.05 0.06 0.06 2.94 2.96 2.95 2.98 2.98 2.94 0.26 1.56 1.58...
  • Page 55 MODE MODE PIN NO. PIN NO. 0.02 0.02 0.02 33.40 33.30 33.30 1.85 1.85 1.87 Q164 KTC3202 : 12V 1.50 1.56 1.88 12.12 12.12 12.12 1.35 1.37 1.68 12.99 12.99 12.99 1.27 1.32 1.10 12.74 12.74 12.74 1.49 1.49 1.49 Q163 KTC3203 : SW_FD(+) 1.51 1.51...

  • Page 56: Printed Circuit Diagrams

    PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD ( TOP VIEW ) ( BOTTOM VIEW ) 3-71 3-72...

  • Page 57: I/O P.c.board

    2. I/O P.C.BOARD ( TOP VIEW ) 3-73 3-74...
  • Page 58 2. I/O P.C.BOARD ( BOTTOM VIEW ) 3-75 3-76...

  • Page 59: Power P.c.board

    3. POWER P.C.BOARD 3-77 3-78...

  • Page 60: Timer1 P.c.board

    4. TIMER1 P.C.BOARD ( 6, 7, 8 TOOL ) 5. TIMER2 P.C.BOARD ( 6, 7, 8 TOOL ) ( TOP VIEW ) ( TOP VIEW ) ( BOTTOM VIEW ) ( BOTTOM VIEW ) 3-79 3-80...
  • Page 62 SECTION 4 RS-01A LOADER PART CONTENTS ELECTRICAL TROUBLESHOOTING GUIDE ......................4-2 THE DIFFERENCE OF DVD-R/RW, DVD+R/RW DISCS AND DVD-ROM ..........4-15 1. RECORDING LAYER ..............................4-15 2. DISC SPECIFICATION...............................4-16 3. DISC MATERIALS ..............................4-16 4. ORGANIZATION OF THE INNER DRIVE AREA, OUTER DRIVE AREA, LEAD-IN ZONE AND LEAD-OUT ZONE...............................4-20 HOW TO USE TEST TOOL ............................4-24...

  • Page 63: Electrical Troubleshooting Guide

    ELECTRICAL TROUBLESHOOTING GUIDE Reset or Power Check. Check it after connecting the power cable only on interface cable for NO Reset or Power ON. Are the pin 44 of Check the power(5V/12V) short. LPB271+5V, pin41 of LPB271+12V Repair the SMPS Block respectively after the power cable connecting? Does the pin #1...
  • Page 64 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 Pickup lens move abnormal” up/down? Go to “Laser operating is Does Laser turn on? abnormal”...
  • Page 65 Tray operating is abnormal. Tray open doesn’t work. Check the connction of LIC201 pin 66. Is there Tray Replace the LIC201. control signal input? Check the communication line (LIC301 pin 46) between LIC201. Is there Tray WhenLPF303 is open, Is drive voltage output? Replace the LIC301.
  • Page 66 Sled operating i s abnormal. Is there Sled control signal output? Replace the LIC201. (LIC201 pin 68,69) Is there Sled drive voltage input? Check the LR316, LR317. (LIC301 pin 29,30) Is there Check the connection of LIC121 Is DRVMUTE2 signal ‘H’? Sled drive voltage output? pin 32.
  • Page 67 Spindle operating is abnormal Is there Spindle control DSP output? Replace the LIC201. (LIC201 pin70) Is there Is there Check the output of LIC301 pin 43. Spindle drive voltage output? FG signal input? Check the connector LPM301. (LIC301 pin 11, 13, 16) (LIC201 pin 71) Replace the LIC301.
  • Page 68 Focus Servo is unstable Is FE signal output normal in Focusing Check Pickup Read Power Replace the Pick up. Up/Down? is 1.3~1.7mW? (LIC121 pin25*) Replace the LIC121. Is FDRV signal output normal in Focusing Replace the LIC201. Up/Down? (LIC201 pin 62) * LIC121 pin25 is MOUT2(FEP Monitor2).
  • Page 69 Track Servo is unstable Is TE signal Is PICK UP Check the PICK UP FFC. output normal in Focusing (E, F, G, H) output normal? Replace the PICK UP. ON and Tracking OFF? (LPM101 pin 8, 5, 9, 4) (LIC121 pin 24*) Replace the LIC121.
  • Page 70 Recognition Fail Case 1: CD-ROM Fail Check Pickup Read Power Go to “LD CHECK”. was 1.3 ~1.7mW? Does Focus Servo Go to “Focus Servo is unstable”. operate normally? Check Pickup Check the Pick-up FFC and LPM101. RF signal LIC121(Pin81) Replace the Pick-up. RFOUT was 2~2.5V? Check EQOUTP Replace LIC121.
  • Page 71 Recognition Fail Case 2 : DVD Disc Check Pick-up Read Power Go to ‘LD CHECK’. was 1.1~1.3mW. Replace the Pickup. Is there RF signal at LIC121 Pin81? Is there RF signal at LIC121 Pin95(RFP) Replace the LIC121. and Pin96 (RFN)? Check again after the replace Replace the LIC201.
  • Page 72 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 73 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? Check and replace LIC201, LIC121, LIC101. 4-12...
  • Page 74 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 5. Optical Power Setting Check reference voltage. OFF level W1SET level &FPD W2SET level &FPD W3SET level &FPD...
  • Page 75 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 76 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 10 of LPM101) (pin 10 of LPM101) Check the input of W2SET.

  • Page 77: 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 4-16...

  • Page 78: Disc Specification

    2. DISC SPECIFICATION 3. DISC MATERIALS 1) DVD-ROM < Single Layer > < Dual Layer > 4-17...
  • Page 79 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 80 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 81 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 82: 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 83 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 84 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 85: How To Use Test Tool

    HOW TO USE TEST TOOL 1. ALPC MEASUREMENT SYSTEM We need basically several measurement instrument to adjust Optical Power of CD and DVD Disc • ESSENTIAL INSTRUMENT 1) Optical Power meter & Sensor (ADVANTEST, TQ8230/Q82014A) 2) Personal Computer 3) Adjustment Program (Dragon or ALPC) --> being recommended ALPC Program in case of SVC •...

  • Page 86: Execute Alpc Program

    3. EXECUTE ALPC PROGRAM 1) Execute Dragon_JW3P.exe file. 2) Enter the password. It is ‘qaz’. When you enter the password, turn off the ‘Caps lock’ in your keyboard. 3) Set up the target device. Press ‘ATAPI’ button on the main dialog of Dragon tool. And find the target device which is GDA-4164L.
  • Page 87 4) If the target device setting is completed, execute the ‘Setup Laser Power(Manual)’ in the ‘Alpc/Opc’ menu. CD/DVD selection ‘WriteScribe’ function (don’t use it.) Laser power setup parameter Non multi pulse power on multi pulse power on Laser Read power on Erase power on ‘WriteScribe’...

  • Page 88: Optical Power Setting

    4. OPTICAL POWER SETTING <Test for checking DVD LD and CD LD> When you change the Travers ass°Øy(including pick-up) or loader PCB, you must do the laser power setting to match pick-up and loader PCB. 1) DVD LD power setting •...

  • Page 89: Confirm Optical Power Setting Parameter

    5. CONFIRM OPTICAL POWER SETTING PARAMETER LD Test result is ok, but Loader performance is bad. 1. Check ALPC parameter value 1) Press button to open ‘Results Display’ dialog. 2) Press button. ALPC Para - We can see optical power setting value. - Write optical Power Setting value to paper.

  • Page 90: Optical Power Setting Parameter Range

    6. OPTICAL POWER SETTING PARAMETER RANGE [VALID ALPC Parameters] < CD > <DVD> 1) CD-R READ Reference DAC : 30 ~150 1) DVD-R READ Reference DAC : 40 ~145 2) CD-RW READ Reference DAC : 80 ~ 250 2) DVD-RW READ Reference DAC : 40 ~145 3) VWDC1 : 10 ~ 39...

  • Page 91: Attachment. Optical Power Measurement

    7. ATTACHMENT. OPTICAL POWER MEASUREMENT Optical Power measurement is to adjust LD power from Pick-up To measure optical power, LD status is on. Other light affects to optical power. Avoid other light to measure exact power Generally headlight power is about 50µW, Sun power is about 100mW. Optical Power measurement method 1.

  • Page 92: Internal Structure Of The Pick-Up

    INTERNAL STRUCTURE OF THE PICK-UP 1. BLOCK DIAGRAM OF THE PICK-UP(LPC-812R) CXA2694N VC(PDIC) PD4CI VCC(PDIC) GND(PDIC) SW(PDIC) SW(FM) VCC(FM) VREF GND(FM) VREF(FM) FM_OUT DVDO TEMP CP0076AH Themester W1DISN W1DIS W2DISN W2DIS W3DISN W3DIS OSCEN OUTB W3SET W2SET OUTA W1SET RSET OUTSET ENABLE Focus...

  • Page 93: Pick Up Pin Assignment

    2. PICK UP PIN ASSIGNMENT Pin Name Signal Description Tracking Actuator drive signal- Tracking Actuator drive signal+ Tilt- Tilting Actuator drive signal- Tilt+ Tilting Actuator drive signal+ Focusing Actuator drive signal- Focusing Actuator drive signal+ GND(LDD) Ground connection for LDD VCC(LDD) Power supply for LDD ENABLE...

  • Page 94: Signal Detection Of The P/U

    3. SIGNAL DETECTION OF THE P/U Infrared Iaser Pick-Up module Focusing Tracking Photo Diode 1) Focus Error Signal ==> (A+C)-(B+D) This signal is generated in RF IC (LIC121 : AN22113A) and controls the pick-up’s up and down to focus on Disc.

  • Page 95: Description Of Circuit

    DESCRIPTION OF CIRCUIT 1. ALPC (AUTOMATIC LASER POWER CONTROL) CIRCUIT 1-1. BLOCK DIAGRAM LPM 101 LIC 121 AN22113A LIC 201 VREFPD MN103SA6G Optical Pick-up S/H2 LPC-812R 127 FPDM Erase S/H3 Space S/H1 Write Strategy Signal Serial ADSC 1-2. ALPC (AUTOMATIC LASER POWER CONTROL) CIRCUIT OPERATION THE ALPC BLOCK DETECTS THE LASER OUTPUT POWER OF THE FRONT MONITOR.

  • Page 96: Focus/Tracking/Sled Servo Circuit

    DESCRIPTION OF CIRCUIT 2. FOCUS/TRACKING/SLED SERVO CIRCUIT 2-1. FOCUS, TRACKING & SLED SERVO PROCESS Focus, Tracking, Sled Servo Pick-up Focus Error Detector A,B,C,D A,B,C,D E,F,G,H Focus Error Detector A,B,C,D E,F,G,H IC121 AN22113A LIC201 Tracking Focusing Servo Control Actuator MN103SA6G LEVEL SHIFT FDRV PARALLEL LEVEL SHIFT...
  • Page 97 DESCRIPTION OF CIRCUIT 2. FOCUS/TRACKING/SLED SERVO CIRCUIT 2-1. FOCUS, TRACKING & SLED SERVO PROCESS 4-36...

  • Page 98: Spindle Servo Circuit

    DESCRIPTION OF CIRCUIT 3. SPINDLE SERVO CIRCUIT 3-1. SPINDLE SERVO PROCESS LIC121 A N22113A Pick-up Wobble Signal Generator WBLIN LIC201 MN103SA6G SERVO DSP Spindle Motor Frequency Controller SPDRV Phase Controller LIC301 BD795 6FS 4-37...

  • Page 99: Major Ic Internal Block Diagram

    MAJOR IC INTERNAL BLOCK DIAGRAM LIC121 (AN22113A) : FEP(RF) ANALOG SIGNAL PROCESSOR • PIN ASSIGNMENT CLUMPGT CDRFP CDRFN LPPS CDHPF ASENV/LPPM DLY1 GND4 DLY2 VCC52 GND2 RSDAT RSEN SDAT AN22113A VCC4 (Top View) 128Pin TQFP VCC1 GND6 WIDGT/SH4 VREF SVREF TQFP-128-P-1414A FEPIDGT/SH6 VCC3...
  • Page 100 MAJOR IC INTERNAL BLOCK DIAGRAM LIC121 (AN22113A) : FEP(RF) ANALOG SIGNAL PROCESSOR • BLOCK DIAGRAM 4-39...
  • Page 101 MAJOR IC INTERNAL BLOCK DIAGRAM LIC121 (AN22113A) : FEP(RF) ANALOG SIGNAL PROCESSOR • BLOCK DIAGRAM HOST HOST SDRAM SERVO 16 Mbit ADSC ANALOG 64 Mbit 16.9MHz PERIPHERAL Falsh 32 bit CPU 2 Mbyte 4-40...

  • Page 102: Ic301 (Bd7956Fs) : Cd-Rom/Dvd-Rom 7Ch Power Driver

    IC301 (BD7956FS) : CD-ROM/DVD-ROM 7CH POWER DRIVER • BLOCK DIAGRAM LDO- ACO1+ LDO+ ACO1- 100k ACO2+ ACTIN1 ACO2- 100k ACTIN2 ACO3+ TJMON ACO3- 100k BTHC SPVM_S ACTIN3 PGND1 LDIN PGND2 AGND SPCNF SPV 1 SLO1+ PGND3 SLO1- SPV 2 SLO2+ SPRNF SLO2- SLGND...

  • Page 104: Circuit Diagrams

    CIRCUIT DIAGRAMS 1. DSP CIRCUIT DIAGRAM 4-42 4-43...

  • Page 105: Rf Circuit Diagram

    2. RF CIRCUIT DIAGRAM 4-44 4-45...

  • Page 106: Drive Circuit Diagram

    3. DRIVE CIRCUIT DIAGRAM 4-46 4-47...

  • Page 107: Circuit Voltage Chart

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

  • Page 108: Printed Circuit Diagrams

    PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD (TOP VIEW) 4-50 4-51...

  • Page 109: Main P.c.board(Bottom View)

    2. MAIN P.C.BOARD (BOTTOM VIEW) 4-52 4-53...

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