LG DRK898 Service Manual

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DVD RECORDER

SERVICE MANUAL

MODEL: DRK898(DR389K-P)

CAUTION

BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"

IN THIS MANUAL.

P/NO : AFN32927234

DECEMBER, 2007

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Summary of Contents for LG DRK898

Page 1 Internal Use Only Website http://biz.lgservice.com DVD RECORDER SERVICE MANUAL MODEL: DRK898(DR389K-P) CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. P/NO : AFN32927234 DECEMBER, 2007...
Page 2 CONTENTS SECTION 1..SUMMARY SECTION 2..CABINET & MAIN CHASSIS SECTION 3..ELECTRICAL SECTION 4..RV9 LOADER PART SECTION 5..REPLACEMENT PARTS LIST Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 3 • General Servicing Precautions • Insulation Checking Prodedure • Electrostatically Sensitive Devices SERVICE INFORMATION FOR EEPROM IC SETTING ..............1-5 UP-DATING PROGRAM ..........................1-6 SPECIFICATIONS ............................1-9 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 4 When servicing this product, under no circumstances should the original design be modified or altered without permission from LG 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 5 Input terminals, Earphone jacks,etc. tricity sufficient to damage an ES device.) LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 6 6. To exit from the option code menu without initializing the system, just turn off the power and then turn on again. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 7 6. If you format like number 2 you’ll not see capture like figure 1 that give you choices, you have no choice only update DVD or Loader program. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 8 6. Remove the disc and Turn off the unit. 7. Turn on again the unit is operation with new software. [FIGURE 1] [FIGURE 2] Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 9 6. Turn off the unit Automatically after “Wait for a Auto Reset” massage [FIGURE 3]. 7. Turn on again the unit is operation with new software. [FIGURE 1] [FIGURE 2] [FIGURE 3] LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 10 3V(p-p), Optical connector x 1 Audio output (analog audio) 2.0Vrms (1kHz, 0dB), 600Ω, RCA jack (L, R) x 1 / SCART x 2 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 12 CONTENTS EXPLODED VIEWS .............................2-2 1. CABINET AND MAIN FRAME SECTION ....................2-2 2. DECK MECHANISM SECTION [RV9(DR-11A)] ..................2-3 3. PACKING ACCESSORY SECTION......................2-4 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 13 Key board is array coming timer board. Purchase order board separately supply incomprehensible. Supply is possible in Location No A50 state in exploded views. OPTIONAL PARTS LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 14 1036 1432 1433 1013 1011 1016 1432 1020 1015 1012 CABLE5 DVD & LOADER BOARD 1043 CABLE6 1043 1046 1047 1439 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 15 HDMI Cable Plug Ass'y 1Way Plug Ass'y 2Way Battery Remote Control Plug Ass'y 3Way Instruction Ass'y Scart Cable Packing Packing Disc LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 16 3. TIMER & KEY P.C.BOARD ......3-75 4. DVD POWER ALLOCATION 4. KARAOKE P.C.BOARD (OPTION)....3-76 BLOCK DIAGRAM ........3-28 5. DMN8603 I/O INTERFACE SIGNAL BLOCK DIAGRAM........3-29 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 17 Is the D128 normal? Replace the D128 Is the D135 normal? Replace the D135 Power Line of I/O or Main PCB are short LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 18 IC132 pin 1? Check the ‘PWR CTL “H”’ Is the IC132 signal from µ-com pin4 “H”? Check or Replace the IC132 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 19 Check or Replace the ZD151 Is the ZD151 normal? Check or Replace the Q162 Is the Q162 normal? Check or Replace VFD LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 20 Emitter? Is the 32V Check the ‘PWR CTL “H”’ supplied to Q167 signal from µ-com Base? Check or Replace the Q167 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 21 Q164 Collector? Is the 13V Check the ‘TIMER “H”’ supplied to Q164 signal from µ-com Base? Check or Replace the Q164 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 22 Check Loader Part Check IC1302(pin2~23) Replace IC1302 BA signal and pin25 (E5_ALE) Check IC1301 Replace IC1301 Replace IC1101 pin29~45 HD signal Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 23 Check I2C line Micom pin31,32 (I2C) : Tuner EEPROM SW_5.3VA, Check SW_5.3VA, SW_12VA SW_12VA power is O.K? Check JACK & L/R/C Replace IC801 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 24 Is there a signal? Is there a signal? Check JK802 & RCA Check JK803 pin2(5V_IO) cable connection Check JK803 & Optic cable connection Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 25 Replace FFC cabel FFC connection or FFC connector MAIN - IO B/D Go to “When playing DISC, No audio output” LGE Internal Use Only 3-10 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 26 Check FFC Replace FFC cabel connection or FFC connector MAIN - IO B/D Go to “When playing DISC, No audio output” Copyright © 2008 LG Electronics. Inc. All right reserved. 3-11 LGE Internal Use Only Only for training and service purposes...
Page 27 SCART R/G/B line Check SCART Jack are there any signal? Check component mute block in R/G/B mode - YPbPr_mute_L - Q891,Q892,Q893,Q894 LGE Internal Use Only 3-12 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 28 Check MM1763 I2C (CLK & DATA) pin27,29,26,39,42 SW_5.3VA, SW12VA is there any signal? Check REAR Jack (SCART / RCA, Component) Copyright © 2008 LG Electronics. Inc. All right reserved. 3-13 LGE Internal Use Only Only for training and service purposes...
Page 29 X-TAL is O.K? Check Reset, I2C from MPEG IC Replace FFC cabel Replace SAA7138 or FFC connector Check MPEG IC LGE Internal Use Only 3-14 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 30 Is there a signal? IC1601 pin1,27,28,29,30 : Replace IC1601 Is there a signal? IC1601 pin2,3 : Is there a signal? Check MPEG IC Copyright © 2008 LG Electronics. Inc. All right reserved. 3-15 LGE Internal Use Only Only for training and service purposes...
Page 31 MIC Detected => Q992 Base : Low No MIC => Q992 Base : High => Q994 Base : Low => Q991,Q993 : Mute ON. LGE Internal Use Only 3-16 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 32 WAVEFORMS 1. SYSTEM BLOCK MPEG DMN8603 Frequency=13.5MHz Main Clock Frequency=162MHz Pins45, DDR RAM Clock Copyright © 2008 LG Electronics. Inc. All right reserved. 3-17 LGE Internal Use Only Only for training and service purposes...
Page 33 DDR Bank Address Pin21 Pin22 Pin23 DDR RAS & CAS Pins26, 27 DDR Write Enable LGE Internal Use Only 3-18 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 35 2. VIDEO BLOCK (COLOR BAR INPUT) MPEG DMN8603 CVBS_OUT Y_OUT C_OUT G/Y_OUT B/PB_OUT R/PR_OUT LGE Internal Use Only 3-20 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 38 5. DIGITAL AUDIO -12S WAVEFORM PCM1780 MPEG DMN8603 SCLK (= 64xLRCK) DATA LRCK / FSYNC Copyright © 2008 LG Electronics. Inc. All right reserved. 3-23 LGE Internal Use Only Only for training and service purposes...
Page 39 5 Pin (FFC) 11 Pin (Harness) 6 Pin (Harness) 30 Pin Karaoke (FFC) Loader Timer Sub-Timer 2 Pin V A A (Harness) LGE Internal Use Only 3-24 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46 7. VIDEO IN BLOCK DIAGRAM TUNER TUNER EU1_V_IN TU_V_IN SW_V_IOUT EU2_V_IN & Y F_CVBS_IN B_SCART_IN G_SCART_IN R_SCART_IN & C PVM01 PMI01 Copyright © 2008 LG Electronics. Inc. All right reserved. 3-31 LGE Internal Use Only Only for training and service purposes...
Page 52 5V IO No Power Q168 is Defective VFD No Power SW 5.3VA No Power Q162 is Defective Q161 is Defective 3-37 3-38 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 65 2.35 2.35 2.34 2.36 2.35 2.36 2.36 IC1202 2.5 Volt 2.36 2.35 2.35 2.35 2.36 2.35 2.35 2.36 2.36 3-63 3-64 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 66 0.59V 0.58V 0.57V 3.18V 3.17V 0.91V 0.91V 0.91V 0.59V 0.58V 0.57V 3.18V 3.18V 2.29V 2.1V 2.06V 0.59V 0.58V 0.57V 3-65 3-66 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 67 10.2V C932 47uF 11.6V 4.4V 11.6V 4.4V C934 10uF 5.8V 10.2V 5.8V 10.2V C953 10uF 3.4V 12.6V 3.4V 12.6V 3-67 3-68 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 68 PRINTED CIRCUIT BOARD DIAGRAMS 1. MAIN & LOADER P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 3-69 3-70 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 71 3. TIMER & KEY P.C.BOARD 4. KARAOKE P.C.BOARD (OPTION) (TOP VIEW) (BOTTOM VIEW) (TOP VIEW) (BOTTOM VIEW) 3-75 3-76 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 72 2. LIC201 (MN103SC7G) : ENCODER, DECODER & DSP SINGAL PROCESSOR .......4-37 3. LIC301 (BD7776ARFS) : CD-ROM/DVD-ROM 7CH POWER DRIVER ..........4-44 BLOCK DIAGRAM .............................4-45 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 73 3.3V? <Reference> 1. 65V (VHALF) : Check pin116 of LIC101 Check the LIC101. 2. 2V (HDVREF) : Check pin80 of LIC101 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 74 Insert DVD+R/RW Disc and check rotation. Does Disc rotate Go to “Recognition fail Case3 continuously and the drive (Blank DVD+R/RW)” recognize the disc? Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 75 Tray drive voltage LPF303 is open, Is Replace the LIC301. output? (LIC301 there Tray drive signal pin14, 15) output? Check the connctor (LPF303) LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 76 Replace the LIC101. Is there Sled drive voltage Replace the Sled Motor. output? (LPM302 pin1, 2, 3, 4) Check the Connection LPM302. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 77 • Replace the LIC301. Is there spindle Motor input Replace the Spindle Motor. voltage? (LPM301 pin1, 2, 3) Check the Connection LPM301. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 78 (LIC301 (LIC301 pin17) Replace the LIC101. pin7, 8) Check the connection Replace the LIC301. LPM101 pin5, 6. Replace the pick-up. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 79 Check the Drive IC off. So, please check TE signal during disc (LIC301) and P/U recognition. referring to “Focus actuator operating is abnormal”. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 80 Replace LIC101. waveform (LIC101 pin65) was about 400mV? Check after Go to “Tracking servo is unstable”. replacing LIC201. It is OK? Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 81 Is there WBL Replace LIC201. (LIC101 pin63) (LIC201 pin63) Signal? Signal? Check the connection Replace LIC101. between LIC101 and LIC201. LGE Internal Use Only 4-10 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 82 Finalized disc? If DVD R disc,use new DVD R disc. Go to “Writing part check”. If DVD RW disc,erase the disc. Copyright © 2008 LG Electronics. Inc. All right reserved. 4-11 LGE Internal Use Only Only for training and service purposes...
Page 83 Is the written file Eject tray. read normally? Go to “LD CHECK”. Is the re-written file read normally? Check and replace LIC201, LIC101. LGE Internal Use Only 4-12 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 84 Perform 5. Optical Power Setting Check reference voltage. OFF level W1SET level & FPD W2SET level & FPD W3SET level & FPD Copyright © 2008 LG Electronics. Inc. All right reserved. 4-13 LGE Internal Use Only Only for training and service purposes...
Page 85 (pin10 of LPM 101) (pin10 of LPM101) Check the input of W1SET. (pin12 of LPM101) Check the input of FPD. (pin123 of LIC101) LGE Internal Use Only 4-14 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 86 (pin19, 20, 21, 22, 23, 24 of LPM101) Check the input of FPD. Check the input of FPD. (pin123 of LIC101) (pin123 of LIC101) Copyright © 2008 LG Electronics. Inc. All right reserved. 4-15 LGE Internal Use Only Only for training and service purposes...
Page 87 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 LGE Internal Use Only 4-16 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 89 At this time, a durable bit is created as is the case with a CD- ROM. [ Playback ] Signals are read with the differences of the reflection of a laser from pits. LGE Internal Use Only 4-18 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 90 A low-power laser is used for playback. The amount of reflected light depends on the status (amorphous or crystalline) of the recording material. This is detected by an optical sensor. Copyright © 2008 LG Electronics. Inc. All right reserved. 4-19...
Page 91 RV9 uses MP type Write Strategy for DVD R and Type 1 for DVD RW as shown below. LGE Internal Use Only 4-20 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 92 4. ORGANIZATION OF THE INNER DRIVE AREA, OUTER DRIVE AREA, LEAD-IN ZONE AND LEAD-OUT ZONE 1) Layout of DVD-ROM disc 2) Layout of DVD+R disc Copyright © 2008 LG Electronics. Inc. All right reserved. 4-21 LGE Internal Use Only Only for training and service purposes...
Page 95 5. When you select ‘Yes’ button, the GUI is cleared and it normally operates. Fig. 1 Fig. 2 Fig. 3 LGE Internal Use Only 4-24 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 96 Vdd(LDD) OSCEN OSCENN Gnd(Temp) Temp Thermist Gnd(OEIC) Disc side OEIC Vc(OEIC) E2+F2 E1+F1 E4+F4 E3+F3 Gnd(OEIC) Vcc(OEIC) GainSw Top View Copyright © 2008 LG Electronics. Inc. All right reserved. 4-25 LGE Internal Use Only Only for training and service purposes...
Page 97 Power supply for OEIC (+5 V) GainSw OEIC output gain control (High voltage:Low gain , Middle:Middle gain , Low:High gain) LGE Internal Use Only 4-26 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 98 Disc. 3) RF Signal ==> (A+B+C+D) This signal is converted to DATA signal in DSP IC (LIC201 : MN103SA6G). Copyright © 2008 LG Electronics. Inc. All right reserved. 4-27 LGE Internal Use Only Only for training and service purposes...
Page 99 This block has four detection paths:All average value path, multi pulse average/peak value detection path, erase/bottom value detection path, space/playback power value detection path. LGE Internal Use Only 4-28 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 100 Detector LIC301 BD7776ARFS LEVEL SHIFT LEVEL SHIFT FDRV PARALLEL DIGITAL TDRV COMPENSATOR STEP2 SLED STEP1 COMPENSATOR Logic SDRV Stepping Motor Copyright © 2008 LG Electronics. Inc. All right reserved. 4-29 LGE Internal Use Only Only for training and service purposes...
Page 101 LIC101 AN22117A Pick-up Wobble Signal WBLIN Generator LIC201 MN103SC7G Spindle Motor SERVO DSP Frequency Controller SPDRV Phase Controller LIC301 BD7776ARFS LGE Internal Use Only 4-30 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 102 CPCABH TQFP-128-P-1414A LSDAT N.C. VCC4 VHALF CTC2 FEPIDGT/SH6 CTC1 CBDOS CBDOF VCC3 WIDGT/SH4 VREF25 WTGT GND5 VREFPD GND3 OFTR VCC51 Copyright © 2008 LG Electronics. Inc. All right reserved. 4-31 LGE Internal Use Only Only for training and service purposes...
Page 103 IREF RFIN2 FLTAMP RFOUT RSEN PI01 PI03 EQOUTA EQOUTB SDAT RREF SEN LSDAT LSENI GCHG PI00 RFIN1 RSDAT PIo2 PI04 LGE Internal Use Only 4-32 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 104 ROPC mark detection sampling signal innput pin (pull-down) PCA average detection, APC space detection/Playback power detection/ Erase detection sample timing signal input pin(pulldown). Copyright © 2008 LG Electronics. Inc. All right reserved. 4-33 LGE Internal Use Only Only for training and service purposes...
Page 105 A/D input pin 3 CWBLHPF1 HPF capacitor connection pin for WBLAGC 1. CWBLHPF2 HPF capacitor connection pin for WBLAGC 2. LGE Internal Use Only 4-34 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 106 PCA bottom bold capactior connection pin. VHALF Reference voltage output pin 1/2 VCC (3.3V). CTC2 Floating capacitor connection pin for tracking error binary. Copyright © 2008 LG Electronics. Inc. All right reserved. 4-35 LGE Internal Use Only Only for training and service purposes...
Page 107 Ground CMOS output pin 4. I : Input pin O: Output pin I/O : I/O pin PS : Power supply/Ground pin N.C: Non Connection LGE Internal Use Only 4-36 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 108 RSDAT HDD1 ASENV HDD14 LPPS HDD0 VDD12 VDD3 HDD15 DMARQ PWM4 NIOWR NIORD PWM3B PWM3A IORDY NDMACK PLM2B INTRQ PWM2A Copyright © 2008 LG Electronics. Inc. All right reserved. 4-37 LGE Internal Use Only Only for training and service purposes...
Page 109 Flash debugger On-Chip 32 bit Debugger control 2 Mbytes Resistor bus General- Watchdog Interrupt Serial Purpose Timer Timer Ports LGE Internal Use Only 4-38 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 110 NIORD HOST ATAPI host read signal IORDY HOST Ready signal to ATAPI host NDMACK HOST ATAPI host DMA acknowledge signal Copyright © 2008 LG Electronics. Inc. All right reserved. 4-39 LGE Internal Use Only Only for training and service purposes...
Page 111 Power monitor detector multiplier conversion signal General-purpose I/O (GIO) OSCO X’tal Oscillator output OSCI X’tal Oscillator input (16.9344 MHz) Digital Vss Wobble binary signal LGE Internal Use Only 4-40 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 112 IC Reset input (power on reset) VDD3 Power supply Power supply I/O pad VDD(3.3) General-purpose I/O (GIO/TxD1) FEP serial interface enable Copyright © 2008 LG Electronics. Inc. All right reserved. 4-41 LGE Internal Use Only Only for training and service purposes...
Page 113 LDD serial interface data Write WOBBLE sample and hold sampling signal FEPIDGT CAPA punch out signal Servo S/H sample signal General-purpose I/O (GIO/SerialCLK1) LGE Internal Use Only 4-42 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 114 RF differential signal (NEG) EQOUTA RF differential signal (POS) AVDD33DRC Power supply Power supply DRC analog-to-digital converter analog VDD (3.3 V) Copyright © 2008 LG Electronics. Inc. All right reserved. 4-43 LGE Internal Use Only Only for training and service purposes...
Page 115 Motor coil input terminal 21 PRTRST Protect input FG signal output 22 PRTFLG Protect flag output SPVM Spindle driver Power supply LGE Internal Use Only 4-44 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

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