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DVD P.W.BOARD OPERATION(WIRING DIAGRAM FOR SIGNAL CHECK) A. A side (This is a basic wiring diagram and signal check.) - 18 -
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DVD P.W.BOARD OPERATION(WIRING DIAGRAM FOR SIGNAL CHECK) B. B side (This is a basic wiring diagram and signal check.) - 19 -
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DVD P.W.BOARD OPERATION(SIGNAL) (This is a basic signal.) 1. RF and Defection Signal Each signal shown refers to WIRING ,SCHEMATIC DIAGRAM and Table of monitor signals. A. RF Signal during play mode. RF RF RF of DVD disc RF of CD disc B. Defection Signal (Detection of level down signal) RF RF PH PH BH BH DEFECT DEFECT Interruption defect Scratched defect 2. Servo and Tray Control A. S-Curve signal by Focus search RF RF FDO FDO FE FE Zero cross point S-Curve of DVD Single Layed disc S-Curve of DV
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DVD P.W.BOARD OPERATION(SIGNAL) B. Focus In and Focus Jump RF RF FDO FDO Kick pulse Brake pulse Zero cross point FE FE Cross point Focus In Focus Jump C. Tracking Servo a. TE (Tracking Error) Signal. RF TE TE Curve b. Track Jump Signal 42 Track Jump Out -> In One Track Jump - 21 -
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DVD P.W.BOARD OPERATION(SIGNAL) D. Sled Servo (Sled motor drive signal) RF RF TE TE Zoom SLDO SLDO E. Spindle Servo (Spindle motor drive signal) U U U+ V FG W SPD Spindle (W, W+, FG) Spindle Drive (U, V, W) F. Tray open and close CLOSE CLOSE OPEN OPEN OPEN SW OPEN SW CLOSE SW CLOSE SW Tray Open Tray Close - 22 -
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DVD P.W.BOARD OPERATION(SIGNAL) 3. Decorder RF RF EFMOUT EFMOUT PCK SBIAS 4.3218MHz (CD:Normal speed) RF, EFMOUT, SBAIS RF, EFMOUT, PCK 4. Reset Timing for Micom Cotroller Reset Timing 5. Anti-Defect Processing A. Disturbance by Defect RF RF TE FE TE DEFECT0 Defect Disturbance of tracking Suppressed disturbance by TE,FE hold process TE disturbance at Defect - 23 -
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DVD P.W.BOARD OPERATION(SIGNAL) B. Circuit block of Anti-Defect 6. Start-up program A. Disc type Identification a. In the case of DVD Dual Disc b. In the case of DVD Single Disc - 24 -
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FILE NO.
Service Manual DVD Player
(SS)
DVD-9201
(SS)
DVD-9501
/ ON LAST MEMO OPEN/CLOSE
ON SCREEN PICTURE MODE ZOOM
(KR)
TV POWER TV CH+ TV VOL+
DVD-9501KR
TV/VIDEO TV CH- TV VOL-
SUBTITLE AUDIO
ENTER
SLOW REV SLOW FWD
(US)
DVD-9501PR
13 2
46 5
79 8
(CA)
0 +10
DVD-9501PR
PROGRAM MULTI-VISION CLEAR
SEARCH MODE REPEAT A-B REPEAT
SURROUND ANGLE ANGLE REPLAY z /ON STANDBY
REMOTE CONTROL
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SPECIFICATIONS Playback system ..................... DVD-Video , Video CD , CD S-VIDEO OUT Playback standard .................. NTSC or PAL Y .............................................1.0 Vp-p (75 ohm) Laser ....................................... Semiconductor laser, C.............................................0.286 Vp-p (75 ohm) (NTSC) wavelength 650/790nm 0.3 Vp-p (75 ohm) (PAL) Laser output VIDEO OUT .................................1.0 Vp-p (75 ohm) (Continous wave max.) : AU
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DVD MECHANISM REPLACEMENT 1.Cautionary instructions in handling the assy (Safety instructions) (Connectors) Optical pickup Do not connect or disconnect while power is on. The laser beam used in the pickup is classified as "class 2". Exposing Connecting or disconnecting signal wires or the main power cord your eyes or skin to the beam is harmful. Take care not to do so. when the power is on may destruct the unit or fixture. When connecting, push all the way in securely. (Caution against static el
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MECHANISM REPLACEMENT 2. Base mechanism mounting PART 1. TRAY AND BASE MECHANISM PART MOLYKOTE SILICON GREASE EM-50L KS-64 MOLYKOTE EM-50L MOLYKOTE EM-50L FLOIL OIL G-474B MOLYKOTE EM-50L 4. BASE MECHANISM PART 3. TRAY PART GREASE CDF-409 FLOIL OIL G-2000B GREASE CDF-409 MOLYKOTE EM-50L FLOIL OIL G-2000B Do not remove the pick-up from base mechanism because of adjustment difficulty. - 3 -
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MECHANISM OPERATION 3. Match the mark of GEAR 2 and mark of GEAR 3 , 1.How to setting the tray. and then install the BOSS. 1. Move the SLIDE left side. 4. Turn the GEAR 1 counterclockwise, and then SLIDE 2. Match the Hole of GEAR 5 and Hole of CHASSIS 4 . move right side. 5. The GEAR 1 move from side to side. LARGE TOOTH GREASE EM-50L RIB 3 RIB 2 CHASSIS HOLE 4 2 GEAR HOLE 5 GREASE EM-50L MARKER 1 3 CHASSIS MARKER FRONT SIDE GREASE EM-50L MOTOR 6. Match t
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DVD P.W.BOARD OPERATION 1. General operation diagram (This is a basic general operation diagram) The circuit mounted on the Loader part (Frontend Board) is configured as shown , which is divided into following blocks according to main ICs. PICK-UP;SF-HD6 VREF RF AMP JVAD DSP PH 6P 9V JV DVD/CD PD (actuator) IC201 (motor) A T224162B RFOP,RFON,PH,TE,ADBH MD 5V (analog) B DRAM 16.934MHZ BH ADBH IC900 5Vd C 3.3V (digital) BA033 (FOR DSP) LD D FFC 26P TOST,FOST,BST,VCA REGULATOR IC200
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DVD P.W.BOARD OPERATION 2. Circuit configuration inside IC100(LA9702W) and IC200(LC78660W) (This is a basic circuit configuration.) - 6 - IC200 IC100 LA9702W(AMP) LC78661W(DSP) REN SLCBIAS VGA 1 26 SLCBIAS DVD EQSCT CD-3T JITTER JV EQ1 PU RFSCT LPF EFMINP RFOP DETECTION 154 41 18 REP EFM BST BOOST CIRCUIT SLC 2 EQ2 EFMINN RFON EFM+ EFMOUT 40 16 2C+A+B EFM,EFM+ 134 DEFECTI DPD / TE DPD / TE 206 DEFECT DEF PCK CPOF OR TH DPD / TE 46 DEFECT 136 DPD 3 HFLIO B 44 PCK PH RF-PH DVD A 4 44 11 PEA
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DVD P.W.BOARD OPERATION 3. Table of monitor signals (This is a basic table of monitor signals) A. Reference table for waveform are listed as below. Name TP label IC, CN Location Pin no. Description FE TP101 IC100 25 Focus Error Signal(Analog) TE TP102 IC100 30 Trk Error Signal(Analog) RFN TP104 IC100 40 RF Signal(Analog) RFP TP105 IC100 41 RF Signal(Analog) BH TP106 IC100 42 Bottom Hold Signal(Analog) PH TP107 IC100 44 Peak Hold Signal(Analog) DEF TP230 IC100 46 High : When passing defection L
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DVD P.W.BOARD OPERATION(SCHEMATIC DIAGRAM FOR SIGNAL CHECK) (This is a basic schematic diagram and signal check.) Top left zoon , There is the drawing which zoomed to 10,11 page. Top right zoon , There is the drawing which zoomed to 12,13 page. Bottom left zoon , There is the drawing which zoomed to 14,15 page. Bottom right zoon , There is the drawing which zoomed to 16,17 page. - 8 - - 9 -
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DVD P.W.BOARD OPERATION(SCHEMATIC DIAGRAM FOR SIGNAL CHECK for top left) (This is a basic schematic diagram and signal check.) - 10 - - 11 -
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DVD P.W.BOARD OPERATION(SCHEMATIC DIAGRAM FOR SIGNAL CHECK for top right) (This is a basic schematic diagram and signal check.) - 12 - - 13 -
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DVD P.W.BOARD OPERATION(SCHEMATIC DIAGRAM FOR SIGNAL CHECK for bottom left) (This is a basic schematic diagram and signal check.) - 14 - - 15 -
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DVD P.W.BOARD OPERATION(SCHEMATIC DIAGRAM FOR SIGNAL CHECK for bottom right) (This is a basic schematic diagram and signal check.) - 16 - - 17 -
