Post on 13-Jul-2020
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3
GENERAL FEATURE
SPECIFICATIONS
1. SUPPORTED SYSTEM • IBM Compatible 486SX or Above
2. SUPPORTED OS
3. GENERAL PERFORMANCE• Data Transfer Rate ..........................................................................................Sustained Data Transfer Rate
.............................................................................................10 Times Speed (Inner side) : 1,500 kbytes/sec
.............................................................................................24 Times Speed (Outer side): 3,600 kbytes/sec• Data Buffer Capacity..........................................................................................1 Mbit DRAM (Internal DSP)• Access Time ............................................................................................Random Access : Average 110 ms
4. POWER REQUIREMENTS• Voltage ........................................................................................................................................+5V DC+5%• Ripple....................................................................................................................................+5V : 100mVp-p• Current .........................................................................................Peak in executing access : 1,000mA MAX
................................................................................................................................Random access : 800mA
..............................................................................................................................Normal operation : 700mA..............................................................................................................................................Standby : 30mA..................................................................................................................................................Sleep : 30mA
5. AUDIO PERFORMANCE• Frequency Response......................................................................................................20Hz~20KHz( dB)• S/N Ratio (IHF-A)..................................................................................................70 dB (Typical, 1KHz 0dB)• Distortion (20K-LPF) ............................................................................................0.05% (Typical, 1KHz 0dB)• Channel Separation ................................................................................................................65 dB (Typical)• Dynamic Range (IHF-A)..........................................................................................................70 dB (Typical) • Output Level (47kΩ Load).................................................................................................0.75Vrms (Typical)
• Enhanced IDE interface• Ultra Slim type CD-ROM drive
(Height: 12.7mm)• Fast 110ms Average Access Time• MAX 3,600KB/sec (24X) Sustained Transfer
rate• Photo-CD Multisession Disc Spec compliant• MPC level 3 Spec compliant• Drawer Type Manual load/Electrical Release• 3-Way eject support (Software, Open button,
Emergency eject)• Built-in ATAPI Interface Controller
• Closed enclosure• Software Volume Control• 8 Times Digital Filter for CD Audio• Built-in MODE-1 ECC/EDC• MTBF 60,000h POH (at 10% Utilization)• PIO Mode 4 & Multi-word DMA Mode 2
support & Ultra DMA Mode2 support• Digital audio through ATAPI Interface• Spin-down Mode for energy saving• Support Standby & Sleep mode
• MS-DOS Version 3.1 or Windows 3.1• OS/2 Warp (Ver 3.0 & 4.0) or higher• Windows '95 or ‘98 higher
• Windows 2000 • Windows NT (Version 3.51 or 4.0) or higher
+1-3
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1. CABINETA. Release 3 screws (A).B. Lift up the Cabinet in the direction of arrow (1).
(See Fig. 1)
2. MAIN CIRCUIT BOARDA. Insert and press a rod in the Emergency Eject
Hole and then the CD Tray will open in thedirection of arrow (2).
B. Release 2 screws (B).C. Remove the Main Circuit Board.
3. FRONT PANELA. Release 5 screws (C) and remove the Cover
Bottom.B. Remove the Front Panel.C. At this time, be careful not to damage the 5 hooks
(a) of the it.
4. BASE PICK-UPA. Remove the Base Pick-Up.
(1)
(A)
(A)(A)
(C)
(C)
Fig. 3
Fig. 1
Fig. 4
(B)(B)
(2)
Fig. 2
DISASSEMBLY
CABINET
HOOKS
MAIN CIRCUIT BOARD
FRONT PANEL ASSY
HOOK (a)
COVERBOTTOM
BASE PICK-UP
EMERGENCYEJECT HOLE
10
REF
REF
REF
REF
REF
REFREF
REF
REF
REF
REFREF
REF
REF
REFVCC VCC
VCC
AP
C
PH
PHEQ-CONTROL
BH
BH
PH-CONTROL
7_MODE 5V
39K
33K
525V
+
7_MODE
36PH
100K
1
2
3
4
5
6
7
BHC
PHC
RFAO
GND1
RFA-
RFIN
FIN1
35BH
34VCC1
33RFSM
32RHLD
31GND2
30REFL
29FE-
28FE
27TE-
26TE
25TSS
24TS
23VCC2
22TSH
21FBAL
20TBAL
19SGC
100K8
FIN2
56K9
E
F
VC
C
56K10
11
12
REFI
VREF
13LDD
14LDS
15LDON
16GHS
17BHH
18EQS
IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION
IC101 (LA9239) : RF Amplifier ICI-V converts and amplifies the signal received from the pick-up and then applies to DSP part of one-chip IC (IC501).
Block Diagram
Pin No. Pin Name Descriptions1 BHC Bottom hold external condensor pin for checking RFAGC.
2 PHC Peak hold external condensor pin for checking RFAGC.
3 RFAO RF Pre AMP output
4 GND RF GND
5 RFA- RF Pre AMP (-) input
6 RFIN RF Sum input
7 FIN1 Pickup output (B+D),
8 Fin2 Pickup output (A+C),
9 E Pickup output (E)
10 F Pickup output (F)
11 REFI Eeternal Condensor Pin of Reference Voltage.
12 VREF Reference output
13 LDD APC circuit output
14 LDS APC circuit input
15 LDON Laser on/off.
16 GHS RF signal gain control.
17 BHH BH response control.
18 EQS RF equalizer. PH detection control
19 SGC Servo gain control
20 TBAL TE balance adjust
21 FBAL FE balance adjust
22 TSH TS wide band control
23 VCC2 Servo VCC
24 TS TS output
25 TSS TS wide band control
26 TE TE signal output (To DSP)
27 TE- TE gain control
28 FE FE signal output (To DSP)
29 FE- FE gain control
30 REFL Reflection output (To DSP)
31 GND2 Servo GND
32 RHLD RF hold control
33 RFSM EFM signal output (To DSP)
34 VCC1 RF VCC
35 BH RF bottom hold output (To DSP)
36 PH RF peak hold output (To DSP)
Pin Description
11
12
H1H
VDD
15kΩ
IN1
FB1
IN2
FB2
IN3
FB3
CT
VREF
STBY
0.012µF
1kΩ
1.1k
Ω
H1L
16
44
25
14
H2H
H2L
13
12
H3H
H3L
VH
FGFG Signal Output
Spindle SpeedControl Input
SFG
SBR
EC
ECR
VP
VCL
SRESET SSET
VT
VN VO
GND
CS
RCS6
RCS5
RCS4
RCS3
RCS2
RCS1
A3
A22
A21
A1
VMSP2
VMSP1
BC2
BC1
11
10
9
7
6
50
18
17
19 20 21
40
51
3
4
53
54
55
1
52
8
49
37
38
VPUMP39
PGSL27
RO326
FO328
VMSL22
PGAC31
RO229
FO230
RO1
FO1
VMAC
32
35
36
15kΩ
20kΩ
20kΩ
20kΩ
0.012µF
0.012µF
100pF
1.65V22µF
5V47µF
100Ω
Rcs=0.33Ω
5V100µF
5V 47µF
0.1µF
0.1µF
100Ω
1kΩ
15kΩ
FF
DivideCircuit
HallCompMatrix
5
56
2
H:activeL:standby
H:3FGL:1FG
H:S-BRKL:R-BRK
45
34
24
41
43
47
46
23
Absolutevalue
S-BRK Conversion
FGGenerator
HallBias
+
X5
UpperDrive
LowDrive
DMOS3-PhaseBridge
OSC
ChargePump
DMOSH/B
DMOSH/B
DMOSH/B
DriveLogic
ABS
ABS
ABS
FB
FB
FB
Logic
Logic
Delta waveOscillator
VREF Reset
Stand-by
VDD Reset
HeatProtection
Drive
DriveM
IC201 (AN8498SH) : Servo Actuator Drive ICGenerates the signal to drive Focus Actuator Coil, Tracking Actuator Coil, Sled Motor, and SteppingMotor by Control Signal input from DSP and u-COM.
Block Diagram
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Pin No Symbol Description1 A22 SP Drive Output 22 RCS6 SP Power Source 63 RCS5 SP Power Source 54 RCS4 SP Power Source 45 A3 SP Drive output 36 SFG SP FG mode conversion7 FG SP FG signal output8 VMSP2 SP Motor power supply 29 VH SP Hall Bias10 H3L SP Hall (-) input 311 H3H SP Hall (+) input 312 H2L SP Hall (-) input 213 H2H SP Hall (+) input 214 H1L SP Hall (-) input 115 N.C. N.C.16 H1H SP Hall + input 117 ECR SP Torque Reference input18 EC SP Torque input19 VP Op amp Non-inverted input20 VN Op amp inverted input21 VO Op amp output22 VMSL Ch3 power supply23 IN3 Ch3 input24 FB3 Ch3 feedback output25 STBY Stand-by26 RO3 Ch3 inverted output27 PGSL Ch3 Power GND28 FO3 Ch3 Non-inverted output
Pin Description
Pin No Symbol Description29 RO2 CH2 inverted Output30 FO2 CH2 Non-inverted Output31 PGAC CH1, 2 Power GND32 RO1 CH1 Inverted Output33 N.C. N.C. 34 CT 3 Delta-wave Output35 FO1 Ch1 Non-inverted Output36 VMAC Ch1, 2 Power Supply37 BC2 Charge Pump Volume Connector238 BC1 Charge Pump Volume Connector139 VPUMP Charge Pump Boost the Voltage of Output40 GND GND41 IN1 CH1 Input42 N.C. N.C.43 FBI CH1 Feedback Output44 VDD Control Circuit Power Supply45 VREF Reference Voltage Input46 FB2 CH2 Feedback Output47 IN2 CH2 Input48 N.C. N.C.49 VMSP1 SP Motor Power Supply50 SBR SP Break mode conversion51 CS SP Voltage Defected Output52 A1 SP Drive Output153 RCS3 SP Power Source 354 RCS2 SP Power Source 255 RCS1 SP Power Source 156 A21 SP Drive Output 2
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IC501 (HMS985300) : DSP+ATAPI DECODER+ASP+System Controller
Driver
VCECPLL
TDO, FDOSLDO, SPDO
*11
*1
*12*2
*14
*3
*4*5*6
LA9238
CD-DSP
Data bus[0.7]DRAMData bus[0.15]
LC895300
LC895299
Adress bus[0.18]Sub-code I/Fde-interleve
Adress generator
Sub-code ECC
Address generator
Address generator
Address generator
Address generator
Address generator
ATAPI I/F
Data output input I/F
MicrocontrollerRAM access
De-scramble &Buffering
ECC & EDC
SRAM
CD-DSP I/F& SYNCDetector
Merge
EXT10CMDI
Each BlockRegister
FGCNT
AudioCircuit
ZRESET
HOST
decoder
*7
*8
*10
*9
*13XTALCK
Each BlockXTAL
Microcontroller
1.5KRAM
Clock generator
BufferDRAM
BusArbiter&DRAMcontroller
Each BlockBus controlsiganl
128KEEPROM
A0~A16
D0~D7
ZOE, ZWE, ZCE
Gray Block si characteristic of LG895300.
InterruptController
Timer
FGCNT CMDI
EXTIISW1SW2SW3
IOPORT0~14
FG
Block Diagram
*1 EFMIN,EFMIN2,PH,BH,FE,TE,TES,RREC*2 RHLD,TSH,EQS,GHS,LDON,FBAL,TBAL,TOFST,SGC*3 LOUT,ROUT,DOUT*4 DD~DD15,ZDASP,ZPDIAG*5 ZCSIFX,ZCS3FX,DA0~2,ZDIOR,ZDIOW,ZDMACK,ZHRST,CSEL*6 DMARQ,HINTRQ,ZIOCS16,IORDY*7 ZRD,ZWR,ZCS,MCK,SUA0~7*8 D0~7*9 CRCERR/FLOCK,HFLO/WRQ/DIR/TLOCK,FSEQ,FSX/LRCK/FV,EFLG/ CK2/PRF,C2F/PCK,EFMOUT*10 TEST0~2*11 PCKISTF,PCKIFTP,PDO,POS1~3,RF*12 SLCO0~3,JITC,DSLB,PHC,BHC*13 PLL1*14 SLCIT1~2,AD1,VREF,CSS
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• IC501 HMS895300Pin Description
Pin No. Signal Type COMMENT
1 Vss P Logic GND
2 A11 O PROM ADDRESS
3 A9 O
4 A8 O
5 A13 O
6 A14 O
7 Wstrobe O Write Strobe
8 A16 O 128K
9 A15 O 64K
10 A12 O
11 A7 O
12 A6 O
13 A5 O
14 A4 O
15 A3 O
16 A2 O
17 A1 O
18 A0 O
19 DATA0 B PROM DATA
20 DATA1 B
21 VDDD P DRAM VDD 5V
22 VDD1 P 3.3V
23 Vss P Logic GND
24 VSSD P DRAM GND
25 DATA2 B PROM DATA
26 DATA3 B
27 DATA4 B
28 DATA5 B
29 DATA6 B
30 DATA7 B
31 ZCE O Chip Enable Signal
32 A10 O PROM ADDRESS
33 Psen O Access Enable Signal
34 IOPORT0 B General Input/Output Port
35 IOPORT1 B
36 IOPORT2 B
TYPEI:INPUT B:BIDIRECTION NC:NOT CONNECT O:OUTPUT P:POWER
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Pin No. Siganl Type COMMENT
37 TEST0 I TEST PIN (GND)
38 WRQ/HFLO/DIR/TLOCK O Monitor Pin
39 FSEQ/DEF O Frame Sync/DEFECT
40 DOUT/TESO O Digital OUT
41 VDD0 P I/O 5V power supply
42 VSS P Logic GND
43 PLL1 O System Clock PLL
44 PLL1VDD P Logic PLL VDD 3.3V
45 PLL1VSS P logic PLL GND
46 CSEL I ATAPI I/F
47 ZHRST I
48 ZDASP B
49 ZCS3FX I
50 ZCS1FX I
51 Vss1 P I/F GND
52 VDD0 P I/O 5V power supply.
53 DA2 I ATAPI I/F
54 DA0 I
55 ZPDIAG B
56 DA1 I
57 ZIOCS16 O
58 Vss1 P I/F GND
59 HINTRQ O ATAPI I/F
60 ZDMACK I
61 IORDY O
62 ZDIOR I
63 ZDIOW I
64 DMARQ O
65 VDD0 P I/O 5V power supply.
66 VDD1 P 3.3V
67 Vss1 P I/F GND
68 DD15 B ATAPI I/F
69 DD0 B
70 DD14 B
72 DD13 B
73 DD2 B
74 DD12 B
75 DD3 B
76 Vss1 P I/F GND
17
Pin No. Siganl Type COMMENT
77 DD11 B ATAPI I/F
78 DD4 B
79 DD10 B
80 DD5 B
81 DD9 B
82 DD6 B
83 DD8 B
84 DD7 B
85 VDD0 P I/O power supply 5V
86 TEST1 I TEST Pin (GND)
87 ROUT O DAC output
88 AUVDD P DAC VDD 5V
89 AUVss P DAC GND
90 LOUT O DAC output
91 Vss P Logic GND
92 XTALCK I XTALCK input
93 XTAL O XTALCK output
94 VDD0 P I/O power supply 5V
95 FSX/LRCK O Monitor port
96 EFLG/CK2 O
97 TRV2/DATA B General input/output port
98 TRV B
99 FLOCK/CRCERR O FLOCK/CRCERR/C2F/PCK output
C2F/PCK
100 EFMOUT O EFM output
101 OUTPORT O General output port
102 SW1 I Tray Close
103 SW2 I Tray open
104 SW3 I Eject Switch
105 IOPORT3 B General input/output port
106 IOPORT4 B
107 IOPORT5 B
108 IOPORT6 B
109 VSSD P DRAM GND
110 VDD1 P 3.3V
111 Vss P logic GND
112 VDDD P DRAM VDD 5V
113 IOPORT7 B General input/output port
114 IOPORT8 B
18
Pin No. Siganl Type COMMENT
115 IOPORT9 B General input/output port
116 DSLB O SLC PWM output
117 AVDD P Slice Level VDD 3.3V
118 SLCIST1 I EFM Slice Level Control port
119 SLCIST2 I
120 SLCO0 O EFM Slice level output
121 SLCO1 O
122 SLCO2 O
123 SLCO3 O
124 EFMIN I EFM input pin
125 EFMIN2 I
126 AVss P Slice Level GND
127 JITC O Jitter output
128 PWM0 I VCO PWM output
129 FR I VCO frequency control port
130 PCKISTF I Frequency comparater charge pump control port
131 PCKISTP I Phase comparater charge pump control port
132 PLL2VDD P VCEC PLL VDD 3.3V
133 PLL2Vss P VCEC PLL GND
134 PDO O Charge Pump Filter
135 PDS1 O Charge Pump select port
136 PDS2 O
137 PDS3 O
138 RPO O P/N Balance Adjust port
139 SVss P Servo GND
140 AD1 I AD input1
141 PH I Peak HOLD
142 BH I Bottom HOLD
143 RREC I Optical judge input port
144 FE I FE input port
145 TE I TE input port
146 TES I TES compartor input
147 VREF I VREF input port
148 PHC O PH Slice condensor input port
149 BHC O BH Slice condensor input port
150 FBAL O Focus Balance port
151 TBAL O Tracking Balance Port
152 SGC O Servo gain control port
153 TOFST O Tracking offset Adjust port
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Pin No. Siganl Type COMMENT
154 SVDD P Servo VDD 5V
155 SVss P Servo GND
156 TDO O Tracking output
157 FDO O Focus output
158 SLDO O Sled output
159 SPDO O Spindle output
160 VDD0 P A/D & D/A 5V
161 Vss P Logic GND
162 VDD1 P 3.3V
163 RHLD O RFAGC hold output port
164 TSH O TS select port
165 EQS O RF Equalizer select port
166 GHS O RF signnal , TS signal gain
167 LDON O Laser Control port
168 TEST2 I TEST PIN (GND)
169 FG I FG input
170 IOPORT10 B General Input/output port
171 IOPORT11 B
172 IOPORT12 B
173 IOPORT13(Debug1) B Audio Mute
174 IOPORT14(Debug2) B LED Drive port
175 ZRESET I CHIP RESET
176 VDD0 P I/O power supply 5V
2. Trouble List (Circuit)
A. LED doesn’t light.B. Pick-Up doesn’t move to the inner-track.C. The Laser of Pick-Up doesn’t light.D. Pick-Up lens doesn’t move up and down.E. Disc doesn’t rotate.F. TOC isn’t read. (The LED turns on, but doesn’t flicker.)
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TROUBLESHOOTING GUIDE
1. Initial Lead-in Operation
Reset or Power-On.
LED Flickers.
Pick-Up moves to the inner-Track.
Laser on the Pick-Up lights.
Pick-Up lens move up and down
Focus Servo On
Tracking Servo On
Spindle Servo On
Read TOC Area (LED Flickers)
Search the Start of Data Area and then pause.
Check the disc type and disc’s loading.
Spindle kick (for 4 sec)
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3. Troubleshooting Guide
A. LED doesn’t llight.
* Notes <Parts Location>Top Side : PN101, CN101
IC501X501, F101R119, R201, R234, R241C701
Bottom Side : IC101, IC501, IC201R202, R421, R422, C222, C591, C592
Check Power Voltage.(C701, F101 : 5V)
Does “L” output at IC501pin ?
Check and replaceR421, R422.
Is the CLOCK Frequency ofIC501 pin 33.86MHz?
Check the pattern ofPN101.
Check IC501.
Check a contact pointbetween the main FPCand CN101.
Replace MechanismAssembly.
YES
OK
NG
YES
OK
NO NO170 92
OK
Check C591, C592 and X501.
Replace PCB Assembly.NG
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B. Pick-Up doesn’t move to the inner track.
Does the signal of IC501Pin change to (H -> L -> H?)
Does “H” output at thepoint (S+)?
Does “H” output at IC501Pin ?
Is the voltage of IC201Pin 1.65V?
Check and replace IC501.
Check and replace IC501.
Check the R234, and thenreplace IC201.
Check a contact pointbetween the main FPCand CN101.
YES
YES
YES
OK
YES
NO
NO
Check and replace IC201.NO
NO
103
107
45
Replace MechanismAssembly.
23
Does the signal of IC501 Pin change to H -> L -> H?
Is the voltage of IC101 Pin LPD 3.3V?
Check and replace IC401.
YES
YES
NO167
C. The Laser of Pick-Up doesn’t light.
Check and replace IC101.NO13
Check a contact pointbetween the main FPCand CN101.
OK
Replace MechanismAssembly.
24
Check the pattern fromIC501 pin to R201and then replace IC501.
4Does the focus search signalappear at FAO (point F)?
Is the IC201 pin 1.65V? Check R234.
YES
YES
YES
NO
NO
Replace MechanismAssembly.
45
Does the focus search signalbetween the F+ and F-appear?
D. Pick-UP lens doesn’t move up and down.
Check a contact pointbetween the main FPC andCN101.
OK
Check and replace IC201.NO
25
Does the laser light on theP/U lens?
Does the signal appear atFAO (point F)?
Do the signals appear atthe F+ and F-?
Check and replace X501and IC501 Pin(33.86MHz) and thenreplace IC501.
Refer to “C: The laser ofPick-up doesn’t light.”
Check R201, R202 and C222and then replace IC201.
YES
YES
NO
NO
NO
92
Check a contact pointbetween the main FPCand CN101.
YES
OK
Replace MechanismAssembly
Check the power inputpattern.
YES
YES
NG
Check R119 and thenreplace IC101.
NODoes the signal appear atthe point “fe”?
Check Power Voltage.(point vc: 1.65V, C701, F101:5V
E. Disc doesn’t rotate.
26
Is the Focus Servo ON?(Does Feo (point fe) signalappear?)
Do (A+C), (B+D) signalappear at IC101 pin ,
?
YES YES
NO7
8
NO
Is the Tracking Servo ON?(Does TEO (point te) signalappear?)
Do E, F signal appear atIC101 pin , ?
YES
NO
9
YES
Is TOC area on the discread? (Does LED flicker?)
Does the other discoperate normally?
Normal Disc is defective.
YESYES
NO
10NO
Do RFAC signal appear?
Is Spindle Servo ON?(Does SPO signal (R241)appear?)
YES YES
NO
NO
NODoes (A+C), (B+D) signalappear at IC101 pin ,
?7
8
Replace IC101.
Replace IC101.
Replace IC501.
Replace Main CircuitBoard or MD Ass’y.
NO
Refer to C.(The Laser of Pick-Updoesn’t light.)
F. TOC isn’t read.
A B C
1
2
3
4
28
BLOCK DIAGRAM
SpindlemotorDrive
AN8498SH
RFAmplifier
LA9239
Focusactuator
Drive
Trackingactuator
Drive
SlidemotorDrive
AT-M08-0430
LPH-222A
Slide motor
DigitalServoSignal
Processor
CD-ROMDecoder
&Interface
SystemController
HMS895300
XTAL
33.86MHzXTALCK
DigitalSignal
Processor
AudioSignal
Processor
Flash MemoryAT49F512TSOP
HOST COMPUTER
OpticalPick-up
24C6989050
Spindlemotor
A B C D
1
2
3
4
5
5
011013 001
012
009008
004
A01
005
PBM00(MAIN C.B.A)˚
428
428428
428
428
435435
006
A00
003
010
EXPLODED VIEW