Manuel d'utilisation / d'entretien du produit GSA-4168B du fabricant LG Electronics
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S u pe r Mu lt i D VD D r iv e S E R VICE MANUAL MODEL: GSA-4165B/ G S A - 4 1 6 7 B / G S A - 4 1 6 8 B P/NO : 3828HS1047G August 2005 Printed in Korea MODEL : GSA-4165B/GSA-4167B/GSA-4168B.
T ABLE OF CONTENTS INTRODUCTION .......................................................................................................................................................................3 FEATURES..........................................
3 This service manual provides a variety of service information. It contains the mechanical structure of the Super Multi DVD Drive and the electronic circuits in schematic form. This Super Multi DVD Drive was manufactured and assembled under our strict quality control standards and meets or exceeds industry specifications and standards.
4 FEA TURES 1 General 1) Enhanced IDE (ATAPI) interface. 2) Internal Half-height Drive. 3 ) CD-R/RW, DVD-R/-R DL(Dual Layer)/-RW/RAM/+R/+R DL(Double Layer)/+RW read and write compatible CD Family and DVD-ROM read compatible. 4) Buffer Under-run prevention function embedded.
4. Performance 1) Average access time: DVD-ROM 145 ms (1/3 stroke) CD-ROM 125 ms 2) Write speed: DVD-R 2x, 4x CLV, 8x ZCLV, 16x PCAV DVD-R DL 2x, 4x CLV DVD-RW 1x, 2x, 4x, 6x CLV DVD-RAM 2x, 3x ZCLV (Ver.2.2), 3x-5x PCAV(Ver.2.2) DVD+R 2.4x, 4x CLV, 8x ZCLV, 12x, 16x PCAV DVD+R DL 2.
6 SPECIFICA TIONS 1. SYSTEM REQUIREMENTS -CPU: IBM Compatible Pentium 4 2.4GHz (or faster) (For High speed, 2.4GHz or faster recommended.) -128MB Memory or greater 2. SUPPORTING OPERA TING SYSTEM 2.1 Applicable disc formats DVD .......................
7 2.4 Data capacity • User Data/Block DVD-ROM/R/RW/RAM/+R/+RW ...... 2,048 bytes/block CD (Yellow Book) .......................................... 2,048 bytes/block(Mode 1 & Mode 2 Form 1) 2,336 bytes/block (Mode 2) 2,328 bytes/block (Mode 2 Form 2) 2,352 bytes/block (CD-DA) 2.
3.3 Data transfer rate 3.3.1 Sustained transfer rate <Write> DVD-R .........................2.77, 5.54, 5.44-11.08 Mbytes/s..................................2x, 4xCLV, 8x ZCLV 9.14-22.16 Mbytes/s .................................................
9 4. Quality and Reliability 4.1 MTBF ..................................................100,000 Power On Hours(Consecutive/Cumulative POH) Assumption : ..........................Used in a normall office environment at room temperature. -POH per year..
LOCA TION OF CUSTOMER CONTROLS 10 1. Disc tray This is the tray for the disc. Place the disc on the ejected disc tray, then lightly push the tray (or push the eject button) and the CD will be loaded. NOTE: Don’t pull out or push in the disc tray forcibly.
11 1. Power Connector Connects to the power supply (5-and 12-V DC) of the host computer. NOTE : Be careful to connect with the proper polarity. Connecting the wrong way may damage the system (and is not guaranteed). Usually this connector can only be attached one-way.
1. CABINET and CIRCUIT BOARD DISASSEMBL Y 1-1. Bottom Chassis A. Release 4 screws (A) and remove the Bottom Chassis in the direction of arrow (1). (See Fig.1-1) 1-2. Front Bezel Assy A . Insert and press a rod in the Emergency Eject Hole and then the CD Tray will open in the direction of arrow (2).
2-2. Pick-up A. Release 1 screw (C) and remove the Pick-up. Pick-up Unit Pick-up (C) Fig. 2-2 13.
030 014 007 A02 A01 A03 021 028 028 452 032 452 020 021 050 430 005 035 004 006 A B C D E F GH 1 2 3 4 5 452 024 481 034 027 026 033 025 430 445 020 453 031 036 453 010 011 009 008 012 016 015 013 PBM00 (MAIN C.
ATIP Absolute Time in Pre-groove. With an additional modulation of the “ Wobble ” , the “ Groove ” contains a time code information. Wobble The pre-groove in the Disc is not a perfect spiral but is wobbled. With : – A typical amplitude of 30 nm – A spatial peried of 54~64 µm CW Continuous Wave.
20 The differences of CD-R/CD-RW discs and General CD-ROM 1. Recording Layer Recordable CD has a wobbled pre-groove on the surface of disc for laser beam to follow track.
21 3. Disc Materials 1) CD-ROM disc Laser Beam Groo ve Substrate (P olycarbonate) Organic Dye La yer Reflective Layer Protective La yer Label Printing 2) CD-R disc Pigment Reflective Layer Color Phtal.
22 3) CD-RW Disc 4. Reading process of Optical Disc Laser Beam Groo ve Substrate (P olycarbonate) Recording La yer Dielectric Layer(TL) Dielectric Layer(UL) Protective La yer Label Printing • It is composed of polycarbonate layer, alloy(silver, arsenic) layer, aluminum reflectivity layer, protective layer.
23 5. Writing Process of CD-R Disc a b c d e f g a b c d e f g Incident Laser Po w e r (Read) (Read) (Write) Laser Spot P osition (Time) a b c d e f g Laser Spot P osition (Time) Laser Spot Recorded M.
24 7. Organization of the PCA, PMA and Lead-in Area 1) Layout of CD-ROM disc Center hole Clamping and Label Area Inf or mation Area Lead-in Area Lead-in Area Diameter 15 mm Diameter 46 mm Diameter 120.
25 8. Function of PCA and PMA area 1) PCA (Power Calibration Area) • PCA area is used to determine the correct Laser Power for a disc. – Method 1 : PCA area is divided by a track. – Method 2 : The previous Calibration value is referred. – Method 3 : ROPC is used to determine Laser Power value automatically in data writing.
26 2) ROPC (Running Optimum Power Control) • Variable primary factor of Optimum Power – Change of Power sensitivity on the Disc. (limited to 0.05 *Po) – Wavelength shift of the laser diode due to the operating temperature change. – Change of the Spot aberration due to the Disc skew, Substrate thickness, Defocus.
27 The differences of DVD-R/RW , DVD+R/RW discs and DVD-ROM 1. Recording Layer LPP (Land Pre-Pit) D VD+R/RW Disc D VD-R/RW Disc 0.74 um 3 T 0.4 um DVD-ROM (Read Only Disc).
28 2. Disc Specification 3. Disc Materials 1) DVD-ROM D VD-ROM Media T ype User data capacity Single-La yer Read Only 4.7GB Dual-La yer Read Only 8.54GB D VD-R D VD-R W D VD+R D VD+R W Dye Phase change Dye Phase change 4.
29 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.
30 3) Recording format using phase-change recording material (DVD-RW/DVD+R W) * 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.
31 4. Writing Pulse W ave Form of DVD+R For different speed ranges, different write strategies can be used. This document specifies 2 options: - a pulsed write strategy, where each single mark is created by a number of subsequent separated short pulses.
32 2) 2 st Method : Using Blocked Write Strategy NRZI Channel bits 2T w Tw dT top T top dT le P p P b T mp lp T dP p 0mW P c P b 1.25T w 3T mark 4T mark 5T mark Etc.
33 5. W riting Pulse W ave Form of DVD+RW NRZI Channel bits 2T w Tw Ttop dTtop P p Pe T mp mp T dT era Pp : Ac tual wr ite pow er Pe : E r a s e Po we r Pb : Bias Po w e r Pb 0mW T mp.
6. Organization of the Inner Drive Area, Outer Drive Area, Lead-in Zone and Lead-out Zone 1) Layout of DVD-ROM disc 34 Center hole 1st transition area 2nd transition area Clamping Zone 3rd transtion a.
3) Layout of DVD+RW disc 35 > Inner Disc Test Zone : for performing OPC procedures. > Inner Disc Count Zone : for counting the number of OPC algorithm performed in IDT Zone. > Outer Disc Test Zone : for performing OPC procedures. > Outer Disc Count Zone : for counting the number of OPC algorithm performed in IDT Zone.
36 LightScribe Media 1. LightScribe Media Center Hole Screen Printed Imaging Lay er Clear Protectiv e Coating Reflectiv e/Ther mal La yer Dye Data La yer P olycarbonate Substrate DiscOD Label Zone Con.
37 2. Hardware Block Diagram of LightScribe Label Printing Host PC (Spindle) uP (DSP) P ower Drive Analog Signal Processor MECHANISM Optical Pick-up Optical Encoder (Sled) (T rack) (Tilt) (F ocus) RFO.
38 3. MD Assy For LightScribe Optical Encoder Unit OPU ID Movement Range : L=21um.
39 4. Optical Encoder Assy Codewheel Direction of radial pla y CODEWHEEL OR CODESTRIP FFC 3PIN SIGNAL PROCESSING CIRCUITR Y R V LED V CC CH A CH B CH B GND GND Vcc OFG Encoder PCB PIN 6 VCC PIN 5 CH A.
40 DVD & CD DA T A PROCESSING 1. Data Processing Flow Command Data Status RF EQ & AGC SERVO DSP Encoder & Decoder & CSS RF data slice EFM demodulator CiRC error correction Audio DAC Bu.
41 R8J32007 HOST DVD PLAYER (EMPEG2 B/D) Scrambled MPEG Data Change the "KEY" KEY Management Control 2. Copy Protection and Regional Code Management Block Block Diagram Brief Process 1.
42 3. About Prevention the DVD-ROM from to be copy A data is able to encode and record in the disc, if a copyright holder wants to prevent the disc from copying. In case of a disc enhanced movie of 3 titles...... DISC KEY (2048 Bytes) is used to encode the whole contents in the disc and TITLE KEY (5 Bytes) is used to encode the title respectively.
43 4. About the DVD-ROM Regional Code DISC ROM - DRIVE MPEG-2 BOARD VGA CARD MONITOR 1 CAN U.S.A MIX CUB BHS PRI. VIR 1 BMG GRL 2 2 ZAF ISO SWZ FIN POI FST LTU BIR UKR TUR FGY JRN TKM AFG PAK CHN MMR MNG RUS KOR JPN HKG MAC TWN PHL 6 3 2 1 5 5 4 1 MDI MNP GUM PLW PNG NZL AUS 4 The disc has the regional code of 8 bit.
INTERNAL STRUCTURE OF THE PICK-UP 1. Block Diagram of the PICK-UP(HOP-7632TS) 44 45 16 15 14 13 12 11 10 26 27 28 29 30 31 32 9 17 8 7 6 5 4 3 2 1 T ilt- C3 R1 R4 CD-LD DVD-LD R2 FB2 FB1 CD-VR DVD-VR .
45 2. Pick up Pin Assignment No. Signal Name I/O Signal Description 1 GND(OEIC,TEMP) Ground for OEIC 2 Vcc(OEIC) I Power supply for OEIC 3 Vc(OEIC) I Reference voltage input for OEIC 4 GAINSW I OEIC o.
3. Signal detection of the P/U 1) Focus Error Signal ==> (A+C)-(B+D) This signal is generated in RF IC (IC101 : R2S35002) and controls the pick-up ’ s up and down to focus on Disc.
47 WGATE RFPDSH Optical Pick-up LD Driver Write Strategy FsDAC WDAC IAPC R160 LPF & Gain WFPDSH FMON RWAPC buffe r 2.5VREF Buffer S/H B/H + - 13 S/H MU X AM P APCDAC (REDA/WRDA) SCLK, SDATA, WDEN .
48 1-2. ALPC (Automatic Laser Power Control) Circuit ALPC function DVD/CD anlaog front-end IC(IC101 R2S35002) is for constant power control purpose. Based on the accurate power sensor(FMON) in P/U, ALPC feedback loop maintains constant power level against laser diode ’ s temperature variation.
49 2. Focus Circuit 2-1. Block Diagram Disc Motor uni t Optical Pick-up HOP-7632TS A,B,C,D A,B,C,D (EF1~EF4) (A+C)-(B+D) (A+C)-(B+D)+K[(EF1+EF3)-(EF2+EF4)] HAVC L S t o V1 4 FE FE FE R102 C405 R103 C4.
50 3. T racking & Sled Circuit 3-1-1. Block Diagram (T racking Following) Disc Motor uni t Optical Pick-up HOP-7632TS A,B,C,D (EF1~EF4) TE TE R101 C101 GND TE ADC Tracking Comp en sat or DAC TRD T.
3-1-2. Block Diagram (Seek) 51 Disc Motor uni t Optical Pick-up HOP-7632TS SUMF RFIP RFIN (EF1~EF4) A,B,C,D TACT+ TACT- IC101 R2S35002 MPPO (A+D)-(B+C) G HAVC LS to V14 1 L P F L P F SPPO [(EF1+EF4)-(.
52 3-2-1. T racking Servo The aim of tracking servo is to make laser beam trace the data track on disc. Tracking Error(TE) Signal is generated from tracking error detected block in R2S35002 using DPP(Differential Push-Pull) Method and DPD (Differential Phase Detection) Method.
4. Spindle Circuit 4-1-1. Block Diagram(FGCA V Servo) 53 Disc Motor uni t Optical Pick-up HOP-7632TS XCO Cont rol Cloc k Generato r IC301 R8J32007 107 M U X P W M SPD 211 Motor Kick REG CAV FD + CAV P D SFG VCK4 M VCK4 M 106 R349 C349 R375 1.65V SPD IC601 R2S30202FP U V CTL1 CTL2 DAVC 1.
4-2-1. Block Diagram (Wobble CL V Servo) 54 Disc Motor uni t Optical Pick-up HOP-7632TS IC101 R2S35002 HPF S / H - + C174 C173 C171 C172 WBLSH C116 87 88 89 90 92 93 94 95 HPF AGC2 HPF BPF AGC3 HPF HP.
MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION IC101 (R2S35002) : RF AMP Analog Signal Processor Pin Assignment 55 75 PORT13 74 PORT12 PORT1 1 PORT10 73 AGHPF1 72 AGHPF2 71 VDD1(3.3V) 70 EQOP 69 EQON 68 GND1 67 IREFE 66 EQFCF 65 64 SUBO/LPPMON 63 SUBI/LPPSIG 62 TOPH 61 BOTH 60 MIRRHPF 59 MIRRTOPH 58 MIRRBOTH 57 VDD4(3.
Block Diagram 56 RFIP RFIN Pick I/F 0.068u 0.068u IDGATE TISH1 AGFU AGFR EQ- AUTO RF LPP Wobble F0-CNT AGC3 BPF SUB AGC1 DPD TE BALANCE FE FE RECD SAV MIRR DEFECT TIE R-OPC OPC APC Serial Cont.
57 • Pin Functions pin Name pin No. Type max. voltage Function TE 1 Analog-Output Tracking error output terminal FE 2 Analog-Output Focus error output terimnal PE 3 Analog-Output PE output terminal .
58 pin Name pin No. Type max. voltage Function BLANK 36 Digital-Output Record/non-record detecting/BD detecting output terminal WOBSIG 37 Digital-Output WOBBLE signal output terminal IP2/MIRR 38 Digit.
59 pin Name pin No. Type max. voltage Function SUBO/LPPMON 71 Analog-Output ID detecting HPF output terminal/LPP detecting HPF output terminal EQFCF 72 External-capacitor required Terminal to connect .
60 IC301 (R8J32007FPV) : Encoder , Decoder & DSP Singal Processor 1.1 Pin Layout CPU15 A17 EF G SFG TLD SPD LDD LE D GPIO04 ICUIN8 ICUIN6 ICUIN7 TE STB 1 TE STB 2 MRS T B V SSI O VCCIO VCC PTE ST3.
1.2 Block Diagram 61 Data WPLL ADIP Detector Detector Counter PRML PLL Generator Demodulate Servo CD-ROM Decoder DVD PI-ECU DVD PO-ECU DRAM MCIF A T API A UDIO DRAM Interface Clock Generator T est Con.
62 1.3 Pin T able Pin no Pin Name 1 VSSR 2 VCCR 3 CPU14 4 CPU13 5 CPU12 6 VSSIO 7 VCCIO 8 VCCRQ 9 CPU11 10 CPU10 11 VSSRQ 12 CPU9 13 CPU8 14 CPRDB 15 USC0B 16 A1 17 CPU0 18 CPU1 19 CPU2 20 CPU3 21 CPU.
63 1.4 Pin Functions It corresponds to the following signs as a pin I/O specification. AI : Analog Input AO : Analog Output AIO : Analog Input/Output I : Standard Input IU : Standard Input with Pull U.
64 Servo Pin List Pin Name Pin No. I/O destination Function BLANK 156 I AFE Blank signal input (also connected to the H8S interrupt port INT5) DEFECT 157 I AFE Defect (scratch detect) signal SFG 213 I.
65 ATAPI Interface Pin List Pin Name Pin No. I/O destination Function HRSTB 59 5I ATAPI ATAPI-IF control signal (host reset signal) DA2 92 5I ATAPI ATAPI-IF register address signal DA1 89 DA0 91 DATA[.
66 Encoder Interface Pin List Serial Communication Interface Pin List Pin Name Pin No. I/O destination Function IP1LPPIN 150 I AFE PID area identification signal/LPP input signal IP2MIRR 149 I AFE PID.
67 Audio Interface Pin List Pin Name Pin No. I/O destination Function DOUT 109 IO ATAPI Digital output pin,also functions as the CPU general port 1-2 ROUT 98 AO ATAPI Audio Lch & Rch output LOUT 100 Clock Generator Pin List Pin Name Pin No. I/O destination Function FEMCK 119 O AFE Front End LSI clock XCO 106 O X ’ tal Crystal oscillation 33.
68 LSI/TEST Control Pin List Pin Name Pin No. I/O destination Function MRSTB 202 I RESET IC Master reset input TESTB2 203 I Test select TESTB1 204 TMS 114 IU E10emulator Test data switch for E10emulator TCK 115 IOU E10emulator Test clock for E10 emulator It can function as a SCI serial clock output port when E10 emulator is not used (multiplexed).
69 Power Supply/GND Pin List Pin Name Pin No. I/O Function VDD 28,41,72, PW DSP core power supply (1.5V) 130,146 VCCR 2,53 PW SDRAM power supply (3.3V) VCCRQ 8,26 SDRAM I/O power supply (3.3V) VDDAA 159 PW 1.5V system analog power supply (1.5V) WPLL1,2 189,193,197 1.
70 No Pin name Function 1 SPIN Spindle control voltage input 2 SL1IN Slide control voltage input1 3 SL2IN Slide control voltage input2 4 SPLIM Input terminal for spindle current limit 5 VM2 Motor Powe.
Block Diagram 71 STM M SWICHING Commut atio n PW M CIRCUIT SPM V/V converter + - CTL SLIDE2 V/V converter + - CTL + - CTL SL1+ SL1- SL1IN SL2+ SL2- SL2IN REF SPIN FG U V W FOIN FO+ FO- TRIN TR+ TR- VM.
72 Input/Output circuit diagram SPIN, SL1IN, SL2IN LOIN FOIN, TOIN,TLIN TEST REF EN1, EN2 SPGS ACTFLG,FG ACT RST VM1, U, V, W VM2, SL1+, SL1-, SL2+, SL2- 5VCC, FO+, FO-, TO+, TO-, TL+, TL- VM3, LO+, L.
TROUBLESHOOTING GUIDE 73 MPU & DSP IC301 MPU & DSP IC301 MPU & DSP IC301 AFE IC101 AFE IC101 Pickup LD Driver Front Monitor IC102 AFE IC101 #6 Pin#79 Pin#110 Pin#203 Pin# 87-90 #2 #1 #3 C1.
74 MPU & DSP IC301 AFE IC101 Driver IC601 Pickup All Disc Pin# 87-90 FFC Setting FE:R102,C405 Focus:#34-35 R329, C335 #40 All Disc MPU & DSP IC301 AFE IC101 Driver IC601 Pickup All Disc Pin# 8.
75 DVD-RAM Disc MPU & DSP IC301 AFE IC101 Driver IC601 Pickup Pin# 80-81 #171 #100 FFC Setting SIGM:R148, C151 Slider FPC Slider:#6, 8-10 DVD-RAM Disc MPU & DSP IC301 AFE IC101 Driver IC601 Pi.
76 Slider FPC Slider:#6,8-10 MPU & DSP IC301 AFE IC101 Driver IC601 Pickup DVD-R/RW Disc Pin# 87-90, 80-81 Pin# 87-90,80-81 FFC Setting TE:R101, C101 TRD:R330,C336 TILT: #36-37 #39 #181 #1 Trackin.
77 MPU & DSP IC301 MPU & DSP IC301 Driver IC601 Pickup FFC FFC (Temp.Information) putemp #178 Spindle SPD:R349, C349 #211 #1 Pin# 12-14 #19 #213 FG Pin# 87-90,80-81 MPU & DSP IC301 AFE IC1.
78 AFE IC101 Driver IC601 Slider/ Spindle Spindle FFC Slider FPC Slider:#6,8-10 Pin# 87-90 MPU & DSP IC301 AFE IC101 Driver IC601 Pickup All Disc FFC Setting FE:R102,C405 Focus:#34-35 Tracking:#30.
79 No. Error Code Contents of fail Fail Analysis Block Diagram SSB Byte8,9 1 28xx LP Adjust NG. 1) Check Pickup FFC Connection. No.01 2) Check solder of IC101circumference. (pin#6, 10, 12, L150, L151) 3) Check solder of IC102. 4) Exchange Pickup(LDD, Front Monitor).
80 No. Error Code Contents of fail Fail Analysis Block Diagram SSB Byte21,22 1 42xx Circuit Offset Adjust NG. 1) Check Pickup FFC Connection. No.04 2) Check solder of IC101circumference . (pin#,1,2,3 pin#87-90, FE_Servo: R102, C405 TE_Servo: R101, C101 PE_Servo: R103, C406) 3) Exchange IC101(AFE).
81 No. Error Code Contents of fail Fail Analysis Block Diagram SSB Byte21,22 7 4Axx Focus Offset Adjust NG. 4A08: Disc Unmatch(Exchange Disc). No.10 (DVD-ROM,CD-R/RW) 1) Check Pickup FFC Connection. 2) Exchange Pickup. 3) Exchange IC301(MPU & DSP).
82 No. Error Code Contents of fail Fail Analysis Block Diagram SSB Byte21,22 16 54xx DPP Amp Adjust NG. 1) Check Pickup FFC Connection. No.07 (CD Disc Only) 2) Exchange Pickup. 3) Check solder of IC101circumference. (pin#1,2,3 pin#87-90, TE_Servo: R101, C101) 4) Exchange IC101(AFE).
83 No. Error Code Contents of fail Fail Analysis Block Diagram SSB Byte21,22 22 5Axx ADIP read timing Adjust NG. 5A01: Check DVD+R Disc (Exchange Disc) . No.19 1) Check Pickup FFC Connection. 2) Exchange Pickup. 3) Exchange IC101(AFE). 4) Exchange IC301(MPU & DSP).
84 No. Error Code Contents of fail Fail Analysis Block Diagram SSB Byte21,22 1 2503,2504 RTZ Timeout(Sled Timeout). 1) Check Slider FPC Connection. No.21 2) Check solder of IC601 circumference . (pin#2-3, 6, 8-10) 3) Exchange IC601. 4) Exchange Slider Motor.
IC701 1.5V REG IC701 2.8V REG 12V DRV IC601 R2S30202FP VM1 #22 Motor power supply 1(Spindle) VM2 #05 Motor power supply 2(Slide) IC301 DSP (R8J32007) #028 VCC Core Power] #041 VDD [Core Power] #072 VDD [Core Power] #130 VDD [Core Power] #146 VDD [Core Power] CN101 P/U (LDD) Vso5V #29 IC101 AFE(R2S35002) VCC1 #08 Power (5.
87 No Circuit/IC Signal Signal/Level mesurement-point (IC-pin or Device) 1 Power supply Line-12V 12V CN801-41 2 Line-5V 5V CN801-44 3 (IC701) reg-1.5V 1.5V IC701-2 4 reg-2.8V 2.8V IC703-5 5 (IC703) reg-3.3V 3.3V IC703-2 6 Flash-ROM VDD : 3.3V 3.3V 37 7 (IC302) CS Active-Low 26 8 XRD read-CK 28 9 DSP VDD : 1.
88 1. Self-Diagnostic Function by LED Blink. • Basic operation : At JR6, MPU is included in DSP, MPU accesses each peripheral (inside, exterior) device, and discover a defect by the ability of a read/write of data to be performed correctly.
89 2. LED does not blink at all at the time of a power supply injection. Eject-SW does not react. (1) Is it normal to the exterior Bus (Data-Bus, Address-Bus, control signal system) of MPU? Viewing — check: -- a short circuit, opening, etc.
90 3. Motor, Abnormalities in Actuator System The drive circuit of a motor & actuator consists of the three ICs IC601(R2S30202FP). The work of each IC is as follows. (1) IC601(R2S30202FP) : 7ch driver Spindle motor driver: 180° audio drive Type, an analog input, a PWM drive, a Vm=12V.
91 12 V GND 5V Device configuration jumper MASTER SLA VE CSEL Host IDE Analog audio LED 3.3V 2.8V 1.5V Flash-ROM (2MByte) MBM29L V160BE or Equivalent (FUJITSU) Disc Loading moto r Slide moto r Disc motor Unit mec han ism T ray Detect SW Eject SW Limit SW Analog Front End R2S35002 100pin-TQTF (RENESAS) 3.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté LG Electronics GSA-4168B c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du LG Electronics GSA-4168B - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation LG Electronics GSA-4168B, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le LG Electronics GSA-4168B va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le LG Electronics GSA-4168B, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du LG Electronics GSA-4168B.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le LG Electronics GSA-4168B. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei LG Electronics GSA-4168B ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
