LG DRD-820B Скачать руководство пользователя страница 40 | Manualshive

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Reset or Power-On.

LED Flickers.

Pick-Up moves to the inner-Track.

Rotate disc (Spindle Motor)

Laser on the Pick-up lights.

Focus Search (Through moving up and down the lens of Pick-Up)

Focus Servo On (Q301 Collector : H"

"

)

Tracking Servo On

Read TOC Area (LED Flickers)

Read the TOC Area and then pause. (LED Continuous On)

2. Trouble List (Circuit)

(In the Initial Lead-in Operation Mode)
A. The Driver doesn’t work wholly.
B. LED doesn’t light.
C. The Tray is not opened/closed.
D. Pick-up doesn’t move to the innertrack.
E. CD Disc doesn’t rotate normally.
F. The Laser doesn’t light.
G. The Pick-up lens doesn’t move up and down.
H. DVD Disc doesn’t rotate normally.

(In the Operation Mode)
A. Speaker is not worked.
B. Headphone is not worked.
C. PC doesn’t read the DVD-ROM Drive data.
D. The screen for the some special DVD Disc doesn’t displayed.
E. The screen of the DVD Disc doesn’t displayed normally.
F. The µ-COM Program doesn’t load from the PC.

TROUBLESHOOTING GUIDE

1. Initial Lead-in Operation

Spindle Servo On

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Содержание DRD-820B

Страница 1: ... 5 25 inch halfheight DVD ROM Drive 100ms Average Access Time in CD ROM Mode Supports 1X 4X and 24X max Rotational Modes in CD Mode Max 3 240 kB sec Sustained Transfer rate in CD mode Photo CD Multisession Disc Spec compliant MPC 3 Spec compliant Power Tray Loading Ejection Mechanism 3 Way Eject Support Software O C Button Emergency Eject Closed Enclosure Built in ATAPI Interface Controller Softwa...

Страница 2: ...udio Ouput Connector This is a digital audio output connector or Video CD output connector You can connect this to the digital audio system or Video CD Board 2 Analog Audio Output Connector The Audio Output Connector connects to a sound card The supplied audio cable is a SoundBlaster type cable If you have a different sound card you will need to contact the sound card manufacturer to obtain the pr...

Страница 3: ...rd A Remove the Cabinet in the direction of arrow 4 See Fig 1 3 B Release 2 hooks a and remove the Clamp in the direction of arrow 5 C Push stopper b and remove the CD Tray drawing forward D Remove the Main Circuit Board in the direction of arrow 6 E At this time be careful not to damage the 4 connectors are positioned at left side of the Main Circuit Board 2 DECK ASSY DISASSEMBLY A Release 4 scre...

Страница 4: ...10 VR01 CN02 DVD VC CN01 DVD GND CN06 DVD A CN07 DVD B CN04 DVD C CN05 DVD D CN09 DVD MD CN11 DVD LD CN15 FO CN14 FO CN13 TR CN16 TR CN25 CD VCC CN26 CD VC CN27 CD GND CN22 CD A CN23 CD B CN20 CD C CN21 CD E CN24 CD F CN30 CD VR CN29 CD MD CN28 CD LD CN10 DVD LDGND CN12 DVD HFM CN08 DVD VR INTERNAL STRUCTURE OF THE PICK UP 1 Structure of the Pick Up 9 ...

Страница 5: ... E F In case of CD Disc This signal is generated in RF AMP IC IC201 TA1254F and controls the pick up s left and right shift to find the track on CD Disc 3 RF Signal A B 2C In case of CD Disc This signal is converted to DATA signal in DSP IC IC301 TC9461F 2 Structure of the Photo Diode CD Infrared laser Pick Up module Photo Diode Tracking Focusing 10 E F C B A As seen from light receiving side ...

Страница 6: ...al phase of A C and B D In case of DVD Disc This signal is generated in RF AMP IC IC201 TA1254F and controls the pick up s left and right shift to find the track on DVD Disc 3 RF Signal A B C D In case of DVD Disc This signal is converted to DATA signal in DSP IC IC401 TC90A41AF 3 Structure of the Photo Diode DVD A D C B As seen from light receiving side Red laser Pick Up module Photo Diode Tracki...

Страница 7: ...Current Driver Control output of the LD Laser Diode The detect current from the monitor diode converts to the I V Current Voltage at the external resistor Beforehand it adjusts a fixed level over for a standard GND If this voltage inputs to the MD IN IC201 Pin 44 5 it is amplified about 270 times about 48 7dB So this voltage outputs from the LD OUT IC201 Pin 45 4 The LD driving element Q201 Q202 u...

Страница 8: ... 8dB 32 step DVD V CC PICK UP Unit DVD GND DVD VC DVD A DVD B DVD C DVD D DVD A B C D CD A B CD E F 63 2 3 58 59 60 54 55 52 53 61 64 CD A B C CD V CC CD VC CD GND CD A CD B CD C CD E CD F FE gain 3dB 4 step 4 step TEO To IC301 To IC301 To IC301 Vref from u com from IC301 from IC401 TEB LVL FEB FEO DPDB 36 37 To IC301 RPO 33 CD To IC301 48 DVD To IC401 RFO 28 25 21 34 19 32 33 20 38 42 43 41 15 14...

Страница 9: ... the pick up for DVD RF is generated to A B C D Tracking Error is phase difference of the A B C and D and Focus Error is A C B D Input and output signal of IC201 The laser beam for CD and DVD inputs to the each other terminal from IC201 TA1254F For CD the signal input to the preceding terminal amplified to 4dB at the first RF AMP IC TA1254F basically For DVD the signal input to the preceding termi...

Страница 10: ...ATOR IC604 DRIVE BA6792 Y IC301 CD DVD SERVO DSP TC9461F F F T T LEVEL SHIFT LEVEL SHIFT FOO TRO IC605 OP AMP NJM2100S D A DIGITAL EQUALIZER AUTO ADJUSTMENT CIRCUIT SLED Control Signal A D TE FE TEO FMO SLED MOTOR Hall Sensor M VH1 VH1 VH2 VH2 SL SL LEVEL SHIFT IC603 DRIVE BA6792 Y IC605 OP AMP NJM2100S IC501 u COM DA0 IC606 OP AMP NJM3403A IC608 OP AMP NJM3403A SLED FEED BACK BLOCK 3 Focus Tracki...

Страница 11: ...e differently according to CD DVD at the first disc drive Tracking signal is converted to D A through the pin TRO terminal of IC301 and output and amplified at IC605 OP AMP and input to IC604 BA6792 Y tracking drive This drive drives the tracking actuator actually Also DVD controls the DPDB for the balance by differential DPD Error signal according to the pit shape type of disc It controls the del...

Страница 12: ...d by of CD ROM and CD R 4 CD 24 max CAV CD R CD ROM play mode In the spindle speed control mode respectively CD 1 CLV drives CLV servo with PLL of RF data read and received at IC301 and output DMO of Pin 50 DVD 2 CLV CLV servo is drove at IC401 and output DMO of Pin 52 CD 14 CD 24 output PWM at µ COM directly IC501 µ COM Pin 99 CAV DMO and control spindle speed IC controls spindle in CLV mode µ CO...

Страница 13: ...ocessing IC CD TE FE SLED Spindle Control Command Data Status SDATA CD DATA CD RF BA 0 8 BD 0 15 MDATA 0 7 MADR 0 5 BUS 0 4 CD Data ECC Receive the order from Host 2 nd ECC CD Data Buffering Generating RF Signal Generating Tracking Error Generating Focusing Error CD Servo Control CD Data Flow Control Host Command Receive or Data Status Transfer Error Correction Generating Header Sync Generating Su...

Страница 14: ... MD 0 7 MDATA 0 7 MADR 0 7 BA 0 8 BD 0 15 Generating A B C D Signal TA1254AF RF Signal processing IC Generating RF Signal Generating Tracking Error Generating Focusing Error Spindle Control Error Signal Receive the Command from Host DVD Data Buffering Copy Protection Control DVD Data Buffering DVD Servo Control DVD Data Flow Control Host Command Receive or Data Status transfer EDC ECC processing G...

Страница 15: ...yer of host reads the regional code and plays title in the case of allowed regional code only 2 Management of DVD Disc for the scrambled of data 1 DVD ROM and DVD player of host generate the KEY 1 respectively transfer to opposite part the KEY 2 is received recognizes the data transfer or not with this value and generates the bus key encoded the data 2 Encoded Disc Key and Title Key host is transf...

Страница 16: ...2 board generates the challenge key 10 Byte and transfers to drive The board and drive generate key 1 5Byte with the challenge key respectively Of course the Algorithm generating the key 1 is not known 3 Compare with the generated key 1 if it corresponds each other the first step of authentication is completed This is a course to identify the MPEG 2 board with a drive 4 The second step of authenti...

Страница 17: ...UM PLW PNG NZL AUS 4 The disc has the regional code of 8 bit Example The disc manufactured in the U S A has the number one Transfer to MPEG 2 board reading the regional code Receiving data from the MPEG 2 board and output through the monitor If the board is setting to the regional code 1 for the U S A Check the received regional code to number 1 all or not transfer the data to VGA card in accordan...

Страница 18: ...I P2DI GNDS P2FP P2FN DPDB VccR NC NC RFO RPP RPB RPO RPZ VccS DFTN FEO TEO LVL VccP VCKF 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 GND P2TP P2TN LDO2 MDI2 VrA VrD Vdd DPAC DPBD DPD1 DPD2 SCB SCL SCD VRCK 48 NC P1TP P1TN LDO1 MDI1 EQF EQB RFA RFDC GND2 EQD NC Vcc2 PSC FEB TEB 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 APC1 R gain Adjustment sel RF sel...

Страница 19: ... Power Supply Servo O RF Ripple Voltage O RF Ripple Output RF Ripple Bottom RF Ripple Peak O EQ RF Output NC Connect to GND NC Connect to GND Power Supply RF I Pit Height adjustmant DPDB is up A and B delay volume is up I TE Balance TEB is up TP gain is up A C delay volume is up I FE Balance FEB is up A C FP Gain is up I VRCKdividesthefrequencytoON OFF VRCK is high frequency divides to off Power s...

Страница 20: ...e Output I TE input DVD I TE input DVD NC Connect to GND I FE input DVD I FE input DVD I APC Polarity1 Positive polarity when connect to Vcc I D input DVD I C input DVD I B input DVD I A input DVD GND RF I APC Polarity2 Positive polarity when connect to Vcc I A input CD I B input CD I C input CD I D input CD GND Servo I FE input CD I FE input CD Pin Name RFDC RFA EQB EQF MDI1 LDO1 P1TN P1TP NC P1F...

Страница 21: ...BOV 6 IPF 7 SBOK 8 CLCK 9 VDD 10 VSS 11 DATA 12 SFSY 13 SBSY 14 SPCK 15 SPDA 16 COFS 17 MONIT 18 VDD 19 TESIOO 20 P2VREF 21 SPDO 22 PDOS 23 PDO 24 TMAXS 25 TMAX 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 XVDD XO XI XVSS VDD PXO PXI VSS TESIO1 TESIN DACT CKSE DMOUT IO3 IO2 IO1 IO0 VSS VDD FLGD FLGC FLGB FLGA SEL 2VREF 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 3...

Страница 22: ...itor port BeabletomonitortheclockfortheDSPinternalflagorPLLbytheµ COMCommand Digital power VDD I Test input port Normally fixed L 2VREF 4 2V for PLL Block O VCO Center Frequency shift port O Phase differential signal output between EFM and PLCK signal Used in x 8 Operation mode O Phase differential signal output between EFM and PLCK signal O Select to Command Bit TMPS 3 state out P2VREF PVREF VSS ...

Страница 23: ...ce control output 3 state PWM output PWM Carrier 88 2KHz O Feed EQ Sled EQ output 3 state PWM output PWM Carrier 88 2KHz O Speed Error signal and Feed Search EQ output 3 state PWM output PWM Carrier 88 2KHz O DISC EQ output SPINDLE 3 state PWM signal output PWM Carrier PXO synchronizing to 88 2KHz for DSP Analog reference voltage 2 x VREF O APC ON OFF signal output When a Laser is on Hi Z output a...

Страница 24: ...illating circuit output VDD for System Clock OSC VDD for D A Convertor O R CH Data positive output GND for D A Convertor D A Convertor reference voltage O L CH DATA positive output VDD for D A Convertor I TEST terminal Enhanced Pull Up resistor Normally It is opened I TEST terminal Enhanced Pull Up resistor Normally It is opened I TEST terminal Enhanced Pull Up resistor Normally It is opened I O D...

Страница 25: ...t O O Emphasis Flag output for Sub Code Q data H outputs when the emphasis is ON and L outputs in OFF mode Output polarity is able to reverse by a command O Channel Clock 44 1KHz output port L is on L CH and H is on R CH Output polarity is able to reverse by a command Pin No 95 96 97 98 99 100 Pin Name RST TESTO HSO UHSO EMPH LRCK UHSO HSO Playback speed H H X 1 H L X 2 L H X 4 L L X 8 ...

Страница 26: ...DD3 SVCKI SVCKO DVSS DVDD3 NC HDWT HDRD HCEN HD0 HD1 HD2 HD3 HD4 HD5 HD6 HD7 DVSS DVDD5 HINT HA0 HA1 PLCK ED0 55 60 65 70 75 MD3 MD4 MD5 MD6 MD7 DVDD5 DVSS MA0 MA1 MA2 MA3 MA4 MA5 MA6 MA7 MA8 MA9 DVDD3 DVSS MWEN MOEN CASN RASN DMO DVR 80 85 90 95 100 MD2 MD1 MD0 SD7 SD6 SD5 SD4 DVSS DVDD3 SD3 SD2 SD1 SD0 TC90A41 SERR SBGN SENB SDCK DVSS SREQ RSTN DVDD3 STDA STCK UPWM DVSS 45 50 40 35 30 RVR1 RVSS ...

Страница 27: ... error signal output OUT Output as a result of RLL detection IN Input of AMD for PLL loop filter OUT AMP output for PLL loop filter OUT VCO Filter terminal OUT Reference voltage output of Enhanced comparator Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Pin Name DPCKI DVDD3 SVCKI SVCKO DVSS DVDD3 N C HDWT HDRD HCEN HD0 HD1 HD2...

Страница 28: ...ddress OUT External RAM Address OUT External RAM Address OUT External RAM Address OUT External RAM Address OUT External RAM Address OUT External RAM Address OUT External RAM Address OUT External RAM Address OUT External RAM Address Digital GND 0V For I O cell DVDD5 Digital 5V For I O cell I O External RAM DATA Bus TTL level I O External RAM DATA Bus TTL level I O External RAM DATA Bus TTL level I ...

Страница 29: ... Logic cell IN MPEG Data demand Flag demand L TTL level IN H W Reset input Reset L Digital DVDD3 3 3V For Logic cell OUT Operating Condition Monitor Data SDCK Synchronizing output PWM Combination OUT Operating Condition Monitor Synchronizing signal Data Top Bit L PWM Combination OUT Genearl purpose PWM output 4mA 5V I F Digital GND 0V For Logic cell Pin No 82 83 84 85 86 87 88 89 90 91 92 93 94 95...

Страница 30: ...al writing NC N C Chip select output to TC9461F Clock output to TC9461F when read write command transfer Bit Clock to TA1254F Latch Signal to TA1254F GND Data to TA1254F Clock for RF EQ Filter to TA1254F NC ÆH Ø when Flash Rom writing For Test Mode L active Write enable signal to TC90A41F L active Read enable signal to TC90A41F L active Chip Select signal to TC90A41F L active Tray close output to ...

Страница 31: ...6817F TC90A41AF Bus 0 to from TC9461F Bus 1 to from TC9461F Bus 2 to from TC9461F Bus 3 to from TC9461F GND Chip Select signal to TC6817F L active Write enable signal to TC6817F L active Read enable signal to TC6817F L active NC Hardware standby mode transition input Rest input from reset part NC GND x tal resonator or external clock input x tal resonator input 5V NC Drive IC mute Signal Servo mut...

Страница 32: ...0A41F IRQ2 request when FOK from TC9461F IRQ3 request when SBSY from TC9461F IDE jumper input H Slave L Master GND Audio Signal Mute output H for Mute SLED OUT A D control signal enable output to analog S W Sled motor rotation sense clock input Spindle motor rotation sensor clock input Spindle motor rotation sensor clock input NC CAVDMO On Off control output H for ON PWM output for CAV spindle con...

Страница 33: ...ut3 for motor N C Output2 for motor N C N C Output1 for motor GND Hall input Amp1 positive input Hall input Amp1 negative input Hall input Amp2 positive input Hall input Amp2 negative input Hall input Amp3 positive input Hall input Amp3 negative input Hall Bias N C Capacitor connection pin for phase compensation Short brake terminal N C Rotation detect terminal Torque control standard voltage inpu...

Страница 34: ...o connecion Driver CH1 negative output Driver CH1 positive output No connection VCC Substrate Ground No connection Substrate Ground VCC No connection Driver CH2 positive output Driver CH2 negative output No connection Function No connection CH2 input gain adjustment pin Driver CH2 input No connection No connection Bias amplifier input Driver mute control input No connection No connection Driver CH...

Страница 35: ...CD IF EDC HSYC 32 16 8 16 BD 15 0 BWU BWL BA 8 0 3 2 9 Da C2P SUB IF SD IF High Speed BSYC ISBGN ASYC 16 8 32 8 16 16 16 8 SBDa SBQda SDa IDdata HEDda Buffer ECC M FIFO 8B 8 8 8 CLOCK ADDRESS OPERATION AUTH H IF M IF H FIFO 32B 16 2 5 2 CSEL PIO3 Combination PDIAG DASP IORDY HDRD HDAK IOCS16 HD 15 0 HRD HC33 HCS1 HA 2 0 INTRQ HWR 8 3 6 32 AUDIO PIO Clock 8 PIO 7 0 TEST 2 0 GND VDD RST 2 1 2 25 3 B...

Страница 36: ...te enable For CAS Signal high position 8bit on 2 CAS type Low power H O High Position 8bit write enable Write Enable on 2 CAS type Low power H O CAS Signal output For CAS Signal low position 8bit on 2 CAS type Low power H O RAS Signal output Low power H O Output Enable terminal Low power H I O General Purpose PIO terminal Power supply terminal GND O Buffer Address Output Pin Name VSS DASP PIO3 CSE...

Страница 37: ...t the CRCC decision Flag of Sub code Q data I Data compensation Flag Input I CD Data Signal Input I Bit Clock Input 1 4112MHz at 1X I Channel Clock Input 44 1KHz at 1X I O General purpose PIO terminal I O General purpose PIO terminal GND I O General purpose PIO terminal I O General purpose PIO terminal I O General purpose PIO terminal I DVD Signal Error Flag Input I DVD Signal Data Enable terminal...

Страница 38: ... 6 3 State Output Micom Data In Output 7 Micom Address Input 0 Micom Address Input 1 I Micom Address Input 2 Micom Address Input 3 Micom Address Input 4 GND I Micom Address Input 5 I Micom Read Signal Input I Micom Write Signal Input I Chip Enable Signal Input I Reset Signal Input Enhanced Pull Up Resistor O Micom Interrupt Signal Output Open Drain Output Enhanced Pull Up Resistor I Reset Signal I...

Страница 39: ...put I HOST Read Signal Input O IO Transfer Ready Output Power supply terminal I Data Acknowledge Input O Interrupt Signal Output GND O Data bit wide Select Output I HOST Address 1 Input I O HOST Diagnostic In Output I HOST Address 0 Input I HOST Address 2 Input I Chip Select 1 Input I Chip Select 3 Input Power supply terminal Pin Name HD4 HD11 HD3 HD12 HD2 HD13 HD1 HD14 HD0 VDD VSS HD15 HDRQ HWR H...

Страница 40: ...n t work wholly B LED doesn t light C The Tray is not opened closed D Pick up doesn t move to the innertrack E CD Disc doesn t rotate normally F The Laser doesn t light G The Pick up lens doesn t move up and down H DVD Disc doesn t rotate normally In the Operation Mode A Speaker is not worked B Headphone is not worked C PC doesn t read the DVD ROM Drive data D The screen for the some special DVD D...

Страница 41: ...Is the clock frequency of X501 16MHz Replace X501 or IC501 Does the Tray open close Check and replace Q807 Q808 LD801 LD802 Replace SW804 Does 4 2V input at R115 Does the 5 3V appear at the terminal of C108 Does H pulse output at the Pins 8 9 of IC501 YES YES YES YES YES YES YES YES NO NO Does the L appear at the Pin 80 of IC501 when push the key 5V Push period A NO NO NO NO NO NO NO No 2VREF 4 2V...

Страница 42: ...isc Does the PWM signal appear at the Pin 52 of IC401 Is the clock frequency of X401 27MHz Replace X401 and check Replace IC401 and check Does appear the PWM signal 2V 6V 2 3 1 5V close open Normal YES YES YES YES YES YES YES YES NO NO NO NO NO NO NO NO Does the next signal appear at the Pins 1 14 of IC606 while the Pick Up moves Power is ON 1 14 YES Does the signal appear at the Pins 11 12 of IC6...

Страница 43: ...ng first Does the 2 2V appear at the Pin 9 of PN201 When Pick up lens moves up and down Does the Focus Coil Control signal appear at IC604 Pin 23 CD DVD 200mV 0V YES YES YES YES Does the Laser light Replace IC201 and check if not working Replace IC301 Does the Focus Control signal appear at IC301 Pin 43 Replace IC605 Does the signal appear at IC601 PIns 2 4 7 6V F G 2 1V 2 1V NO YES Replace MD Ass...

Страница 44: ...D Disc rotate normally Test the peripheral of IC701 Is the frequency of the X701 25 4MHz Check the IC402 IC401 buffer and IC702 IC701 buffer Vcc and damage or not Replace IC404 2 1V YES Does the DVD RF output at the Pins 15 16 17 18 of PN201 300mV 0V Does the DVD RF input at the Pin 48 of IC401 2 0V Replace IC401 Replace X701 NO H 2 5V YES YES YES YES YES YES NO NO NO NO ...

Страница 45: ...d of PC or Speaker Does the Audio signal at IC801 Pins 2 6 Replace IC801 Does the Headphone well work Does the host computer recognize the DVD ROM Drive The screen is abnormal in DVD Disc Does the other DVD Disc operate normally Replace MD Assembly or Main Circuit Board Does the Drive operate normally 1 2V Disc is defective YES NO Does the RF signal appear at PN201 Pins 1 2 3 4 5 200mV 0V A Check ...

Страница 46: ...t computer recognize the DVD ROM Drive Check the Interface Cable and Master Slave option Replace IC501 or IC701 Working well Replace Main Circuit Board Can t Down Load µ COM program from host computer NO NO F YES YES ...

Страница 47: ... 015 027 027 014 011 012 009 005 004 013 424 424 424 424 424 424 443 001 008 051 052 409 023 028 PBM00 MAIN C B A 021 020 020 050 020 403 020 021 022 022 403 410 024 025 448 404 026 030 029 410 416 410 404 409 415 415 A01 A02 413 413 413 413 410 403 403 7 8 ...

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