LG CED-8081B Service Manual Download

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3. Signal detection of the P/U

1) Focus Error Signal ==> (A+C)-(B+D)

This signal is generated in RF IC (IC401 : CXA2551R) and controls the pick-up’s up and down to focus on

Disc.

2) Tracking Error Signal (DPP Method) ==> {(A+D)-(B+C)}-

x {(F+H)-(E+G)}

This signal is generated in RF IC (IC401 : CXA2551R) and controls the pick-up’s left and right shift to find

to track on Disc.

3) RF Signal ==> (A+B+C+D)

This signal is converted to DATA signal in DSP IC (IC201 : OTI-9790).

Pick-Up module

Photo Diode

Tracking

Focusing

Infrared Iaser

[(F+H) - (E+G)]

(A+D) - (B+C)

(A+D) - (B+C) -

[(F+H) - (E+G)]

Offset

Sub2

Main

Tp/2

Sub1

Track Center

F,E

D,C
A,B

H,G

Summary of Contents for CED-8081B

Page 1: ...uple speed and eight speed 5 Supports CD RW write operation at double speed and quadruple speed 6 PIO Mode 4 Multi DMA Mode 2 Support 7 MPC 3 Spec compliant 5 Audio 1 Output 16 bit digital data over ATA interface 2 4 Times Digital Filter for CD Audio 3 Software Volume Control 4 Equipped with audio line output and headphone jack for audio CD playback 5 Front panel Volume Control for Headphone Outpu...

Page 2: ...ssion at once SAO Track at once TAO Variable packet writing Fixed packet writing Multi session 4 Cache memory R W 2 Mbyte 5 Disc diameter 12 cm 8 cm Read only 6 Data capacity Yellow Book User Data Block 2 048 bytes block Mode 1 Mode 2 Form 1 2 336 bytes block Mode 2 2 324 bytes block Mode 2 Form 2 2 352 bytes block CD DA 7 Rotational Speed CD Audio 6x 15x CAV Approx 3000 rpm CD RW data 8x 20x CAV ...

Page 3: ...UDIO PERFORMANCE CED 8081B FUNCTION TABLE Item Typical Limit Test Signal Test Condition Note OutputLevel 0 7 Vrms 10 1KHz 0 dB No Filter at 47 kΩ S N 80 dB 75 dB 1KHz 0 dB with IHF A 20KHz LPF at 47kΩ THD 0 2 0 25 1KHz 0 dB with IHF A 20KHz LPF at 47kΩ Channel 70 dB 65 dB 1KHz 0 dB with IHF A 20KHz LPF at 47kΩ Separation Frequency 2dB Response H P OutputLevel AUDIO OUT 3 dB 20Hz 18KHz 0 dB No Filt...

Page 4: ...rack 4 Emergency Eject Hole Insert a paper clip here to eject the Disc tray manually or when there is no power 5 Volume control This is used to adjust the output volume of the headphone jack It can t be used to adjust the output volume for the audio output connectors on the rear panel NOTE Turn the volume down before turning on the power Sudden loud noises can damage your hearing 6 Headphone jack ...

Page 5: ... damage the system Always turn the power OFF when connecting or disconnecting the cable 3 Jumper Connector This jumper determines whether the drive is configured as a master or slave Changing the master slave configuration takes effect after power on reset 4 Analog Audio Output Connector Provides output to a sound card analog signal Generally you need this to play a regular audio CD 5 Digital Audi...

Page 6: ... Circuit Board A Remove the Cabinet in the direction of arrow 4 See Fig 1 3 B Release 2 hooks a and remove the CD Tray drawing forward C Remove the Main Circuit Board in the direction of arrow 5 D At this time be careful not to damage the 4 connectors are positioned at left side of the Main Circuit Board 2 MECHANISM ASSY DISASSEMBLY 2 1 Pick up Unit A Release 2 screws B B Separate the Pick up Unit...

Page 7: ...2 2 Pick up A Release 1 screw C and remove the Pick up 2 3 Sled Motor Assy A Release 2 screws D E and remove the Sled Motor Assy D E Sled Motor Assy Pick up Unit Pick up C Fig 1 5 9 Fig 1 6 ...

Page 8: ...o 5V at the power supply initial input mode Is the pin 16 of IC401 4 0V Is the pin 31 of IC401 2 0V Is the pin 5 of IC102 3 3V Is the pin 7 of IC514 2 5V Is the pin 1 and 2 of IC514 2 0V Is the pin 1 of IC512 8 0V NO NO YES YES YES YES YES 49 Are the X201 and X301 oscillating Check the X201 X301 Check the IC201 IC301 NO Check the IC401 OTI9071 Check the IC102 PQ1U331 NO Check the IC514 NJM3414 Che...

Page 9: ...ion is abnormal After eject tray Inset CD R Blank Disc and reloading Does Disc rotate continuously as Disc recognition is abnormal Does Disc stop Go to Sled operating is abnormal Go to Spindle operating is abnormal Go to Laser is abnormal Go to Spindle control is abnormal 1 Go to Spindle control is abnormal 2 Go to Spindle control is abnormal3 Go to Disc recognition is abnormal NO NO NO YES NO NO ...

Page 10: ...s w Tray open close doesn t work NO Check the connection of IC301 pin 18 Replace the IC301 NO NO Check the Tray Connector PN301 Check the Motor Line and Motor YES IsthereTraycontrolsignalinput IC501pin26 Check the connection of IC409 pin 12 Replace the IC409 BU2500FU Check the communication line between IC409 and IC301 MICOM NO YES YES YES When PN301 is open Is there Tray drive signal output Repla...

Page 11: ...25FA Check the connection of IC301 pin 13 Is there HALL SLDOUT signal input IC301 pin 39 Is there SLED FG signal input IC301 pin 63 Check the IC502 BA5925 NO Check the communication line between IC409 and IC301 NO NO YES YES YES YES Is there HALL 1 signal input IC508 pin 3 NO Check the Connector PN501 Replace the SLED Motor NO Is there Sled drive voltage input IC501 pin 23 YES NO Is there Sled dri...

Page 12: ...le Connector PN502 Replace the Spindle Motor NO NO YES Is SPNON signal H IC510 pin 23 NO YES YES YES NO Replace the IC509 NJM3404 Check the connection of IC301 pin 14 Replace the IC301 MICOM Is SBRK signal L IC510 pin 18 NO YES Check the connection of IC301 pin 30 Replace the IC301 MICOM Is there a SPNFG signal input IC301 pin 62 IC201 pin 7 NO YES Check the connection of IC510 pin 19 Replace the ...

Page 13: ... Pick Up Is there Focus Search drive voltage output IC501pin13 14 NO Check the connection of IC201 pin 207 Check the communication line between IC201 and IC301 Replace the IC201 OTI 9790 YES NO YES Spindle control is abnormal 1 CD ROM Disc Does FOCUS Servo operate normally Is there a output normally IC401 pin 34 33 Replace the IC403 KM4200 Go to Spindle operating is abnormal Replace the IC401 OTI9...

Page 14: ...es Tracking Servo operate normally YES Go to Track Servo is unstable Go to Disc recognition is abnormal NO Is there WBLIN signal input IC201 pin 132 Spindle control is abnormal 3 Go to RF output is abnormal Is there ATG signal output IC401 pin 41 YES YES NO Replace the IC401 OTI9071 NO Is there DMO signal output IC202 pin 2 YES Replace the IC201 OTI 9790 Go to Spindle operating is abnormal NO ...

Page 15: ...62 Go to RF output is abnormal YES YES NO NO Is there PICK UP A B C D output normally PN401pin8 9 14 15 RF output is abnormal Check the PICK UP FFC Replace the PICK UP Go to Laser is abnormal YES IsRRF signaloutputnormal IC401pin89 FirstRecognitiontry Over1 04Vpp SecondRecognitiontry Over0 3Vpp YES NO Check the connection between PN401 and IC401 Replace the IC401 OTI9071 No OK ...

Page 16: ...Replace the PICK UP Check the IC401 OTI9071 Go to RF output is abnormal Check the IC404 NJM3403 NO Is TE signal input normal in Focusing ON and Tracking OFF IC201 pin 198 NO Replace the IC201 OTI 9790 Check the Driver IC IC501 and P U referring to Focus Actuator operating is abnormal Is there TAO signal output in Tracking ON IC201 pin 208 NO Is PICK UP E F G H output normal PN401 pin 16 7 13 10 YE...

Page 17: ... Data of How to use Test Tool Dragon Execute D LD Inspection of How to use Test Tool Dragon YES NO OK NO Laser is abnormal OFF LEVEL NG VRDC NG G E Normal F NO Execute C LD Power Setup of How to use Test Tool Dragon NO YES NO VWDC1 NG YES YES YES ...

Page 18: ... 2V NO Check the connection of IC409 Pin 18 IC410 Pin 1 2 3 Check and replace the IC409 DAC YES IC401 Pin 4 FPDO 2 4 0 3V NO Check the connection of PN401 pin 19 Check and replace the PN401 PICK UP YES PN401 Pin 25 VRDC CED 8081B 0 9 0 5V NO Check the connection of IC401 pin 12 Check and replace the IC401 Execute D LD Inspection of How to use Test Tool Dragon Check the P U connector and then repla...

Page 19: ... IC409 Check the P U connector and replace the P U Execute D LD Inspection of How to use Test Tool Dragon YES YES YES NO Check the connection of IC601 pin 18 29 and 34 Check and replace the IC601 Asic PN401 Pin 31 W XR H YES NO Check the connection of IC409 pin 4 Check and replace the IC409 DAC IC401 Pin 5 WREF 3 1 0 2V YES NO Check the connection of PN401 pin 19 Check and replace the PN401 PICK U...

Page 20: ...18 and 34 CheckandreplacetheIC601 Asic Check the connection of IC409 pin 19 Check and replace the IC409 DAC P N401 Pin 30 ODON H G Execute E LD On of How to use Test Tool Dragon VWDC 2 PN401 Pin 31 W XR H PN401 Pin 26 VWDC2 CED 8081B 3 4 0 4V Check the P U connector and replace the P U YES YES YES YES NO NO NO ...

Page 21: ...if the disc has long width Scratch change it Does the disc have any Dust Scratch Fingerprint YES NO Use LG bundle Software Write Tool Version Easy CD Creator 4 02c Direct CD 3 01c Is the write Tool version supported by LG CD RW Drive YES NO NO Check disc information on Writng Tool If you get some data information with Non Recordable Disc Message the disc is finalized Finalized Disc unrecordable Di...

Page 22: ...the re written file readed normally Is ROPCSH input signal Pulse when CD R writing IC401 pin 49 The blink alternates between LED1 and LED2 when Writing start OPC operation Do the IC301 MICOM pin 11 and pin 12 output toggle signals during Writing Check the connection between IC301 pin 11 12 and LED Check and replace the LED803 804 YES YES YES YES YES NO NO Check the communication lines between IC30...

Page 23: ...est Tool Dragon CD R Recording Mode NO IC601 Pin 33 CDR RW H IC601 Pin 34 WR RE H IC601 Pin 27 WGATE H IC401 Pin 60 WLDON H NO NO NO Check the connection lines of IC201 Check and replace the IC201 Are IC601 pin 29 EFM1 30 EFM2 42 RESAMP1 2 RESAMP2 41 ROPC1 pulse signals NO Check the connection lines of IC601 pin 21 18 Check and replace the IC601 Are PN401 pin 30 ODON 31 W XR pulse signals NO Check...

Page 24: ...WR RE H IC601 Pin 27 WGATE H NO NO Check the connection of IC601 pin 13 Check and replace the IC601 IC401 Pin 60 WLDON H NO Check the connection lines of IC601 Check and replace IC601 Are IC401 pin 51 WFPDSH 50 RFPDSH 53 WBLSH 54 SPDSH 51 MPDSH pulse signals NO Check the connection lines of IC201 Check and replace IC201 Are IC601 pin 29 EFM1 30 EFM2 42 RESAMP1 2 RESAMP2 41 ROPC1 pulse signals NO Y...

Page 25: ...the IC401 After inserting Test Disc TCD 784 1x play NO IC401 Pin 89 RRF 2 5V 1 0V IC301 Pin 36 ASYM1 Peak of IC401 Pin 85 RRFIN2 IC401 Pin 85 RRFIN2 2 1 0V NO Check and replace the IC301 MICOM IC301 Pin 23 CDR RW H NO NO YES YES YES IC301 pin 37 ASYM2 Bottom of IC401 Pin 85 RRFIN2 YES YES Check the connection of IC401 pin 77 78 Check and replace the IC401 Normal ...

Page 26: ...djust H P volume max VR801 NO AUD_MUTE L IC301 Pin 6 Do LOUT ROUT signals output IC201 Pin 151 154 Do audio Line signals output PN201 Pin51 54 NO NO Check and replace the JK801 Does the audio signal output at the headphone jack JK801 NO Check and replace the IC801 Do audio signals output IC801 Pin1 7 NO YES YES YES YES YES Normal ...

Page 27: ...itch not working Check the connection of IC301 pin8 Replace the IC301 Check the connection of SW801 Replace SW801 Replace the IC301 NO Is IC301 pin 8 5V before pushing PLAY KEY SW801 Is IC301 Pin 8 0V pushing the SW801 NO YES YES ...

Page 28: ...hanged conditions of disc and change in operating temperature Jitter The 16 value of the time variation between leading and trailing edges of a specific I3 I11 pit or land as measured by Time Interval Analysis Deviation The difference between a fixed value of Pit length and Land length TOC Table Of Contents in the Lead in Area the subcode Q channel contains information about the Tracks on the disc...

Page 29: ... Land Track pitch p Radial Direction Iw A O a a Groove Land Radial Error Signal The Groove wobble Average center Actual center CD ROM CD R CD RW Standard Yellow Book Orange Book II Orange Book III Record Not available Write once Re writable I 11 Itop 0 6 0 6 0 55 M11 0 70 HF Modulation Write Laser Power mW 4 15 mW 6 14 mW Read Laser Power mW 0 5 mW 0 7 mW 1 0 mW Jitter 35 nsec 35 nsec 35 nsec Refl...

Page 30: ...d on the disc It is so called WORM Write Once Read Many CD It is composed of polycarbonate layer Organic dye layer Reflective layer and Protective layer Gold Silver Reflective layer is used to enhance the reflectivity According to the kinds of Organic dye layer it is divided by Green CD Gold CD Blue CD Laser Wavelength 780 nm Laser Power read 0 7 mW Recording Power 1x 4 8mW 2x 8 10mW 4x 10 13mW 8x...

Page 31: ...iting and reading is enabled by the difference of reflectivity It is possible to overwrite about 1000 times Laser Wavelength 780 nm Laser Power Read 1 0mW Recording Power Erase 4 8mW Write 12 16mW When disc rewriting new data is overwritten previously recorded data Polycarbonate layer has a Pre Groove which make a track Lens H D Beam Spot Focusing Lens Laser Spot at Constant Read Intensity Reflect...

Page 32: ...Spot Recorded Mark Reflected Light Signal Reflected Light Signal Below ORP Mark Too Short At Optimum Record Power ORP Above ORP Mark Too Long Time 6 Writing process of CD RW Disc Write Power Erase Power Read Power Groove Crystal Amorphous Amorphous Recorded state lower reflectivity Melting quenching Heating gradual cooling Crystal phase Erased state higher reflectivity ...

Page 33: ...Area Lead out Area Center hole Clamping and Label Area Information Area PCA PMA Test Area Count Area Diameter 15 mm Diameter 45 mm Diameter 120 mm Unrecorded Disc Tsl 00 35 65 Tsl 00 15 05 Tsl 00 13 25 Tsl 99 59 74 00 00 00 in out Test Area for performing OPC procedures Count Area to find the usable area immediately in T A Tsl start time of the Lead in Area as encoded in ATIP PMA Program Memory Ar...

Page 34: ...ad_In area so that general Driver can read it Because PCA and PMA area exist before Lead In area General CD Player or CD ROM Drive can t read these areas 9 OPC and ROPC 1 OPC Optimum Power Control This is the first step of writing process because CD writer has its own laser power value and media have different writing characteristics This is determined by the Writing characteristic speed temperatu...

Page 35: ...Reference B level value c Normalization of B level is used to eliminate the effect of reflectivity fluctuation The reflected B level value is normalized by the disc reflectivity itself 21 C CD D R R R RW W Media Write Strategy Determination PCA Test Area Program Area PMA Area Lead In Area Lead out Area OPC PCA Count Area ROPC Recording Capacity of CD R RW 74Minute Recording media 2048 Byte Sector ...

Page 36: ...25 26 27 28 29 30 31 32 FCS TRK TRK FCS FGND PDGND F B A H PDVcc PDVc G D C E FPDVc FPDO Vcc Vcc CFREQ CMOD PGND VRDC VWDC2 VWDC1 GND OSCEN WE2 WE1 ENBL 2 Axis Actuator C5 C4 R3 R6 R2 R1 C6 C7 Q1 S G D 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 R5 C3 FPD A C Q2 D S G R4 LD C8 R7 R8 R9 L3 L2 L1 C9 VOUT VREF IINR RFREQ IIN2 IIN3 OUTEN2 OUTEN3 PDIN Vcc IOUT GND RAMP ENBLE OSCEN Vcc IC2 KRS 202A CED 8081B...

Page 37: ... 17 18 FPDVC I LD Power Monitor Amp VC 19 FPDO O LD Power Monitor Amp Out 20 Vcc 5V I LD Analog Voltage 5V 21 Vcc 5V I LD Analog Voltage 5V 22 CFREQ I Change Frequency 23 CMOD I Change Modulation 24 PGND _ LD Power GND 25 VRDC I Read Power Analog Control Voltage Input 26 VWDC 2 I Overdrive Analog Control Voltage Input 27 VWDC 1 I Overdrive Analog Control Voltage Input 28 GND _ LD GND 29 OSCEN I Mo...

Page 38: ...Method A D B C k x F H E G This signal is generated in RF IC IC401 CXA2551R and controls the pick up s left and right shift to find to track on Disc 3 RF Signal A B C D This signal is converted to DATA signal in DSP IC IC201 OTI 9790 24 Pick Up module Photo Diode Tracking Focusing Infrared Iaser k F H E G A D B C A D B C k F H E G Offset TE Tp Sub2 Main Tp 2 Sub1 Track Center F E D C A B H G ...

Page 39: ...pc fgdg rldon rdaon 5K H H H H H VRDCN FPDO FPDVC VRDC VRDC1 VRDC RREF VWDCN VWDC WREF VWDC1 VWDC2 FPD0 FPD1 FVREF RFPDSH WLDON WFPDSH 1 S H 5K 5 H wdaon writelev C427 C443 R413 2 5V 2 5V Q403 Q402 Q404 R429 Q406 Q405 R406 R413 vwdcsw1 vsdcsw2 ivon readlev1 readlev2 8 8 8 10 5 3 4 2 50 51 11 74 18 12 VWDC FGND WLDON PDGND 25 5 6 13 12 10 9 6 5 8 60 6 3 4 18 13 H 2 5V 4V 5V 4V R484 C474 R452 R486 R...

Page 40: ...wer Levels Read Write and Overwrite are used to write on CD R disc and Read Level is used to monitor the output laser power For stabilizing read loop the S H signal FRPDSH which sample and hold the Read Level of laser power in the CD R writing mode is input through Pin 50 of OTI 9071 CD RW Three Laser Power Levels Read Erase and Write are used to write on CD RW disc and Erase Level is used during ...

Page 41: ...PF 100KHz LPF 80KHz Offset adj Gain adj A B C D E F G H VC GND VCC PDIC AGC BPF HPF A C B D _ OTI 9071 CEO ATFG _ K AGC Slice Circuit Gain Adj Offset adj IC201 132 IC201 197 IC201 163 IC201 198 IC201 194 IC201 204 EQRFN EQRFP IC403 TEBC IC404 94 LPF 200KHz LPF 80KHz LPF 200KHz LPF 200KHz LPF 10KHz Gain Adj ...

Page 42: ...s Error FE TE FAO T T F_ _ F TAO Track Error Detector Detector 8 D A Level shift Level shift Focus Tracking Sled Motor IC501 Driver BA5983FM Actuator Level shift Hall sensor Digital EQ Auto Adj Circuit SLED MOVE SLO IC501 Driver BA5983FM Sled control signal IC201 Servo control OTI9790 FAO TAO FE TE TE FE A D M IC502 BA5925FA 4 H1 SLD SLD H1 H2 H2 SLD FG IC301 µ com IC409 BU2500 Speed Detector ...

Page 43: ...y main beam A B C D but side beams E F and G H for correcting DC offset generated in Push Pull method The remaining procedures of TE signal processing in OTI 9790 is similar to Focus Servo After D A converted Tracking servo signal is output through TAO port OTI 9790 Pin 208 and drive Tracking Actuator through the Tracking Drive IC IC501 BA5983FM 3 4 Sled Servo The working distance of tracking actu...

Page 44: ...CD ROM Recorded area in CD R Spindle Servo is controlled by IC201 OTI 9790 and servo signal is output via DMO pin 2 30 E F A B D C G H Pick up IC401 OTI9071A Wobble Signal Generator 8 6 RF SRF FILTER WBLIN EFM LOCK TON DMO SPN8 12Cm SPNBOOST SPNON DEFS ATIP CLV FG CD DSP SERVO CD EFM CLV CAV x32 MOTOR SPEED CONTROLLER SPNFG REVDEF IC201 OTI9790 Frequency Controller Level shift Decode PLL IC301 IC5...

Page 45: ...TEBC RP RX TX BHO1 PHO1 PHO2 RECD1 RECD2 RRF EQRFP EQRFN AUX1 VARIOUS INTERNAL SIGNAL AUX2 AUX3 WREF MUXOUT1 MUXOUT2 BHO2 BHC1 PHC1 VWDC1 VWDC2 VREF 2VREF RBIAS FVREF FPDO FPDI RFPDSH WFPDSH VRDCN VRDC RREF VWDCN VWDC MCLK PRST ULAT UTXD URXD USCK WREFSH WPLTSH GAINUP WBLSH HIN GIN FIN EIN SPDSH DIN CIN BIN AIN MPDSH HAVC BHC2 PHC2 RRFIN2 WLDON RECDIN INPUT S H STAGES AND MATRIX FUNCTIONS FOCUS AN...

Page 46: ...alog ground 16 2VREF I O 2x Reference voltage 4 2V 17 AVDD P Analog power 18 CEO O Center position signal 19 CEP I O Gain and fc setting node for center position signal 20 CEN I O Gain and fc setting node for center position signal 21 RP1 O RF ripple signal 22 RPBC I Ripple balance 23 RPCT I Ripple center input 24 RP2 O RF ripple signal 25 RPIN I AC coupled RP input 26 RPDC O DC coupled RP signal ...

Page 47: ...tion 62 RECD2 O Recording area detection 63 ULAT I Microcontroller latch 64 DVDD P Digital power 65 USCK I Microcontroller clock 66 UTXD O Microcontroller transmit data 67 URXD I Microcontroller receive data 68 DVSS G Digital ground 69 PRST I Power on reset active low 70 MCLK I 34 5744MHz Clock Input 71 AVSS G Analog ground 72 AUX1 I Auxiliary analog input for MUXOUT 73 AUX2 I Auxiliary analog inp...

Page 48: ...F signal output 90 AVSS G Analog ground 91 AIN I Main beam input signal A 92 BIN I Main beam input signal B 93 CIN I Main beam input signal C 94 DIN I Main beam input signal D 95 HAVC I O Main Side beam input signal reference voltage 96 EIN I Side beam input signal E 97 FIN I Side beam input signal F 98 GIN I Side beam input signal G 99 HIN I Side beam input signal H 100 AVSS G Analog ground ...

Page 49: ...PUTYPE RD 15 0 ROE RCASL RCASH RWE RRAS0 RA11 RRAS1 RA10 RRAS2 RA9 RRAS3 RAD 8 0 HDASP HA 2 0 HPDIAG IOCS16 HIRQ DMACK HIORDY HRD HWR HDRQ HD 15 0 HRST ARST CS3FX CS1FX DPLL Decoder VPSET Register CIRC CIRC 4K SRAM 4K SRAM Encoder PLL Audio ATIP Demodulator CLK Generator Spindle Motor Controller ASYNC ASYNC MSF TON Bit DMCON Bit 0 1 CD SERVO Spindle Focus Tracking Sled Microcontroller Interface US...

Page 50: ...11T Pit Pattern EFM11T Pit pattern indicator 176 E11TS O EFM11T Space Pattern EFM11T Pit pattern indicator 177 EFCK O EFM Bit Clock EFM bit Clock generated from internal clock in CD encoder 181 RESMP1 O Read Level Sample1 Sample hold signal of read levels on writing 182 RESMP2 O Read Level Sample2 Sample hold signal of read levels on writing 186 ROPC1 O Running OPC1 Sample hold signal 1 of reflect...

Page 51: ...quency track crossing signal input used to perfrom rough searches and to increment the internal track counter 137 FLAGA O Servo Monitor Flag A FLAGA is used to output one of four internal servo signals FLAGA can also be used as a general output port 138 FLAGB O Servo Monitor Flag B FLAGA is used to output one of four internal servo signals FLAGB can also be used as a general output port 139 FLAGC ...

Page 52: ...n 53 HRST IS ATA Host Reset ATA drive reset 59 HA2 62 HA1 IS ATA Host Address Address signals USB 48 MHz clock 60 HA0 48M 72 HD15 76 HD14 78 HD13 80 HD12 82 HD11 86 HD10 88 HD9 90 HD8 I OPUB ATA Host Data Bus SCSI Controller Data Bus 91 HD7 89 HD6 87 HD5 85 HD4 81 HD3 79 HD2 77 HD1 73 HD0 56 CS1FX USBD I OS ATA Host Chip Select 1FX 3FX 57 CS3FX USB D D differential I O data USBD 64 IOCS16 OOD ATA ...

Page 53: ...ers 107 UCS1 IS Chip Select 1 Enables access to buffer memory Read Enable Data Strobe Read enable data strobe input for read 104 URD IS If CPUTYPE VCC Intel This pin is read enabled If CPUTYPE GND Motorola This pin is data strobe Write Enable Data read Status Write enable data read write status input for read 105 UWR IS If CPUTYPE VCC Intel This pin is write enabled If CPUTYPE GND Motorola This pi...

Page 54: ...this pin if the microcontroller has multiplexed addess and data bus CPU Type Select Microcontroller type 86 type 68type select 94 CPUTYPE IS VCC Intel GND Motorola Buffer Memory Interface Pin No Pin Name Type Description 39 RAD11 40 RAD10 41 RAD9 42 RAD8 43 RAD7 44 RDA6 O RAM Addess Addess for DRAM 45 RAD5 These pins are multiplxed address output 48 RAD4 49 RAD3 50 RAD2 51 RAD1 52 RAD0 20 RD15 21 ...

Page 55: ...ASL O Column Address Strobe Low 37 RWE I O Write Enable 0 WE0 for DRAM Write strobe of RD 7 0 when 16 bit data bus is selected 36 ROE I O Output Enable OE for DRAM Power Supply Pin No Pin Name Description 9 VDD5 5 Volts 10 22 34 46 55 63 74 83 92 VDD Digital Power 3 3 Volts 108 134 173 189 11 23 35 47 58 66 75 84 93 VSS Digital Ground 109 135 174 190 152 153 157 158 199 206 AVDD Analog Power 3 3 V...

Page 56: ...CC SIN1 2 SOT1 2 AVRH L AVSS ADTG AN0 to 7 CS0 1 2 3 OUT0 1 2 3 4 5 AIN0 1 BIN0 1 SCK1 2 SIN0 SOT0 SCK0 ZIN0 1 IN0 1 TOT0 TIN0 IRQ0 to 7 8 8 2 P10 P17 8 P20 P27 8 P30 P37 8 P40 P47 8 P50 P57 8 P60 P67 8 P70 P77 8 P80 P87 8 P90 P97 8 PA0 PA3 4 P00 to P07 8 Provided with input pull up resistor setting register P10 to P17 8 Provided with input pull up resistor setting register P40 to P47 8 Provided w...

Page 57: ...RE O Write Read select output 21 Vcc 3 3V 3 3V 22 P45 A13 pROPCon O ROPC enable output 23 P46 A14 OUT4 pCDRnRW I CD R CD RW select output 24 P47 A15 OUT5 pTestMode1 I TestMode1 25 P70 SIN0 pRXD I Serial communication receive 26 P71 SOT0 pTXD O Serial communication transmit 27 P72 SCK0 NC O NC 28 P73 TIN0 pFlagA I OTI9790 FlagA TEZC input 29 P74 TOT0 pRFSdatai OTI9071 sdata input 30 P75 pSBRK O Spi...

Page 58: ...RD O Data read latch output 70 P52 WRLX pnUWR O Data write latch output 71 P53 WRHX NC NC 72 P54 HRQ NC NC 73 P55 HAKX pTestMode0 I TestMode0 74 P56 RDY pURdy I Data ready input 75 RSTX pRST I Reset input 76 P57 CLK pSlave I TestMode input 77 X1A NC NC 78 X0A GND GND 79 Vss GND GND 80 X0 pX0 I Crystal resonator connection input 81 X1 pX1 I Crystal resonator connection input 82 Vcc 3 3V 3 3V 83 P00...

Page 59: ...ilt in D A converters with output buffer operational amplifiers 2 Outputs of 12 channels are used for adjustment control of servo circuits and references Block Diagram Pin No Pin Name Description 1 Vref GND 2 AO3 B level Reference 3 AO4 Write power reference 4 AO5 Write power reference 5 AO6 HAVC Offset 6 AO7 Track SPP Reference 7 AO8 Sled Move 8 AO9 Hall Bias 9 AO10 Sled Offset 10 Vref 4V Pin No ...

Page 60: ...gative output Driver CH4 negative output Driver CH1 positive output Driver CH4 positive output Driver CH3 negative output Driver CH3 positive output Driver CH1 output Driver CH2 output OPIN1 OPIN2 OPIN3 OPIN1 OPIN2 OPIN3 OPIN4 PreVcc PreVcc OPIN4 OPOUT 1 OPOUT 2 CH3 output OPOUT 3 OPOUT 4 8 9 10 11 12 13 14 GND GND CH1 3 standby control STBY1 PowVcc1 PowVcc CH1 2 PowVcc2 STBY2 GND GND PowVcc CH3 4...

Page 61: ...C Output1 for motor GND Positive input for hall input Amp1 Negative input for hall input Amp1 Positive input for hall input Amp2 Negative input for hall input Amp2 Positive input for hall input Amp3 Negative input for hall input Amp3 Hall bias terminal Brake Mode terminal Capacitor connection pin for phase compensation Short brake terminal 3 Phase synthesized FG signal output terminal Rotation det...

Page 62: ... C i r c u i t A I n p u t 6 BIAS_IN Bias Amp Input 7 CB D i f f e r e n t i a l C i r c u i t B I n p u t 8 B Hall Amp Output 9 HB Hall Amp B Negative Input 10 HB Hall Amp B Positive Input 11 IN1 OP Amp 1 Positive Input 12 IN1 OP Amp 1 Negative Input 13 OUT1 OP Amp 1 Output 14 STBY Standby Control Pin Pin No Pin Name Description 15 IN2 OP Amp 2 Positive Input 16 IN2 OP Amp 2 Negative Input 17 OUT...

Page 63: ...I93C86 2kB EEPROM BA5983FM F T S T DRIVE OTI9071 RF Amp Wobble ALPC ASIC Laser Control S H Signal Gen 20MHZ MB90F476 System Controller 33 86MHz OTI9790 DSP Servo DECODER ENCODER ATIP Demodulator Write Strategy I F Data 2MB DRAM H O S T I F Cable Audio Mute H P Amp L R L R Line Out Headphone Jack BA6664FM MOTOR DRIVE BA5925 Sled Speed BLOCK DIAGRAM 1 CED 8081B BLOCK DIAGRAM ...

Page 64: ...C201 OTI 9790 DSP Servo ATAPI PRST UCS0 1 URDY URD UWR UA 0 8 UAD 0 15 IC301 MB90F476 µ COM IC101 XC61AN RESET IC102 PQ1U331 Regulator 3 3V 5V 5V IC401 OTI 9071 RF AMP Wobble ALPC 2V IC514 NJM3414 OP Amp 2V_ACT 2 5V RESET CXACS SDATA SCLK SDATA SCLK SDATA SCLK DACS EPCS 31 95 4V 16 IC302 CSI93C86 EEPROM IC409 BU2500FV DAC 2 Power Block Diagram ...

Page 65: ...BS RPBC RX XTOR ATFG CE TZC TE FE IC404 NJM3404 IC402 KIC7408 IC405 BU4052 EFM1 2 3 WGATE LDON EFCK EEPS TEBC TE TX CE WBLIN RX BS UCS0 1 URDY URD UWR UA 0 8 UAD 0 15 SDINT UINT IC301 MB90F476 µ COM SLD_MOV IC509 BA5925 Sled Speed IC409 BU2500 DAC IC501 BA5983 Drive IC510 BA6664 Drive SPDL FG DMO FAO TAO SLO IC601 XC9536 Asic IC201 OTI 9790 IC509 NJM3404 IC508 BU4053 3 Control Signal Block Diagram...

Page 66: ...EQRFP W XR OSCEN ENBL ODON WFPDSH RFPDSH WBLSH SPDSH MPDSH ERGCNT WBLON Level Shift Circuit IC403 KM4200 IC301 MB90F476 µ COM UCS0 1 URDY URD UWR UA 0 8 UAD 0 15 Lout Line out Rout Q804 Mute Control IC801 H P Amp H P Out EFM RFAC BS BS IC201 OTI 9790 EFM1 2 3 WGATE LDON EFCK EEPS IC601 XC9536 ASIC SDINT UINT 4 Read Write Signal Block Diagram ...

Page 67: ...tor unit GRS R02A OSM 32A Laser Control SPINDLE MOTOR FOCUS COIL TRACKING COIL SLED MOTOR LOADING MOTOR BA6664FM MOTOR DRIVE BA5983FM F T S F DRIVE 20MHz Beta MB90F476 System Controller AUDIO Circuitry RF ROPC Circuit A1 A2 B Level Headphone Jack R ch L ch Line out 8V 5V GND GND 12V 5V GND GND 12V 8V Reg 3 3V Reg 3 3V A B C D 1 2 3 4 5 5 Block Diagram CED 8081B Optical Pick up KRS 202A ...

Page 68: ...420 431 008 009 012 011 014 004 006 015 016 402 402 402 430 430 021 020 500 024 419 025 020 402 027 026 023 022 402 400 413 413 413 413 021 030 029 007 003 002 031 050 010 402 028 001 PBM00 MAIN C B A 005 034 A02 A01 11 12 EXPLODED VIEW ...

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