Sony 5th gen. DVD players - training manual - Wiki Karat
Contents
1. FIGURE 8 5 DISC MECHANISM REMOVAL TOP VIEW 4 SCREWS Figure 8 6 shows a bottom view of the disc mechanism Table 8 2 lists the drive functions of the motor s gears pictured in Figure 8 6 Table 8 2 Drive Functions Gear Alignment Motor Stop Sensor Stacker Motor Stacker height Motor moves stacker up Rotary encoder 1 encoder down see Fig 13 8 Disc Loading None Moves disc horizontally 7 disc sensors Sw Unloading Into Clamper PB or 11 18 See Figure Stacker storage 13 3 amp Table 13 1 Disc Clamping Disc entry lockout Prevents disc entry Rotary encoder 2 Clamping Encoder during PB see Fig 13 6 Stacker Disc Clamps disc Loading 1 amp 2 Positions rear rollers for stacker entry 37 8 Mechanical Operation Gear Alignment Concepts Procedure and Testing The CD Mechanism gear alignment is grouped into functional names for ease of use 1 Stacker Height Rotary Encoder 1 Alignment 2 Disc Entry Lockout Gear Alignment 3 Clamping Motor Rotary Encoder 2 Alignment 4 Disc to Stacker Gear Alignment Stacker Height Rotary Encoder 1 Alignment Concept To ensure the rear disc storage tray stacker is positioned at the correct height to accept discs two gears must be aligned Figure 8 7 Procedure Prealign the black rotary encoder gear as shown in Figure 8 8 Place the Stacker tray on the 3 stacker tray screws Figure 8 9 You will have to rotate the screws to accept the stacke2. Chapter 2 Block Diagram Figure 2 1 shows a block diagram of fifth generation DVD players They have the following features e New type of optical pickup unit CD or DVD laser selection not shown e All analog Driver functions input to one IC IF Con e No External RAM for Syscon IC e Block Noise Reduction IC e ARP and Servo DSP is combined in one IC Y y PD IC EH gt CDDOUT V Y C i CDData cm Video Buffer DBCK LRCK k ie aii Coil Hat O ma FLASH or OTP SPDIF OUT Sey Chuck Tray Ta Detect na a Sa AG AP gt FIGURE 2 1 BLOCK DIAGRAM 10 CIRCUIT BOARDS LOCATION DVP NS400 700 Al 23 FOR NS 400 POWER BLOCK HS15S1U COMPLETELY DIFFERENT NS500V INCLUDES AUDIO VIDEO SWITCHING REGULATOR INTERFACE CONTROL HS13S03 IN NS400 AV 59 NOT IN NS400 AUDIO VIDEO OUT SS SI 31 REMOTE COMMANDER RECEIVER NOT IN NS400 MS 81 LOADING MB 101 IF 84 SIGNAL PROCESS SERVO INTERFACE CONTROL MB 98 IN NS400 FIGURE 2 2 CIRCUIT BOARD Table 2 1 MB Board Main IC Functions IC Name DVP NS400 DVP NS700 Purpose Ref Number Ref Number RF Amp IC202 IC201 DVD CD RF Amp Digital Servo Servo EEPROM IC101 IC101 Servo Setting Data Emer History Hour meter Disc Parameters Flash IC107 IC106 8 Start up instructions om ITE 9 IC103 IC104 Overall Operation ARP IC302 IC
3. 1 Disc Position Switches Loading Moment Moment Moment Closed Closed Closed Moment ary ary ary ary Mini Closed Open Open Closed Open Open Open Disc In CD Playback When SW 14 closes again during disc overshoot the loading sequence ends motor stops and CD Playback sequence begins The CD clamping motor turns ON to raise the laser assembly platform to the centered disc Rotary encoder 2 Figure 5 6 monitors the position of the laser platform As the laser platform reaches the clamped position the loading rollers are geared away from the disc The clamped disc can spin play 36 8 Mechanical Operation Stacker Disc Storage lf another disc is selected for PB the mechanism will release the clamped disc and store it into the rear stacker compartment before extracting the second disc The clamping motor reverses to release the disc into the rollers and engage the rear stacker rollers Meanwhile the stacker motor positions the rear stacker tray height When rotary encoder 1 senses the correct stacker storage tray position the loading motor rolls the disc into the stacker slot Final disc location switches SW 16 and 17 determine that disc to storage tray is complete and reverses the loading motor to disengage the disc so the tray can move to the new disc slot Disc loading Stacker and Disc Clamping Motor Drive Access As shown in Figure 8 5 four screws secure the CD mechanism BIL P knn 3 L a ng B V
4. AVD IC503 502 Check IC503 502 FIGURE 6 1b NO TEST MODE CON T 28 6 Troubleshooting Figure 6 1d shows the Pins for Chip Select of the System Controller Check the source of the signal if the chip select pins do not carry any signal and or if they are constantly at a fixed voltage Trouble Shooting No Test Mode Menu 33Mhz output Ok X101 IC103 IC104 SYSCON CSOX CS1X ke aS p oS lt nn M N UM Z O O O O O O Pin23 XCS Pin 24 HCS Pin 25 XWAT FIGURE 6 1d NO TEST MODE CON T Figure 6 1e shows the flow of INT Interrupt signal between the ICs Note the interrupt pulse on the CDT screen shot Trouble Shooting No Test Mode Menu 33Mhz output Time Destination IC has carried out the instruction 20 uS e Waiting to send data een No Clock No CS from Slave to Master IV INT signal Check 3 S UJ N 9900090 ED q IC701 601 AUDIO DSP IC503 502 AV decoder Un C2 FIGURE 6 1e NO TEST MODE CON T 29 No Power Several simple things can cause NO Power in this DVD player Refer to Figure 6 2 In limit Sensor If a In Limit sensor is defective IC302 will cause the System Controller to shut off power Also check the INLIM sensor signal to ARP If there is no change in the voltage at Pin 166 of ARP IC302 check the INLIM sensor or flex cable continuity to the switch VCO Voltage The VCO voltage varies b
5. Gate Mode 304 5 Vpp Timebase 0 1 ms Stby Mode 1 254 Vpp small 0 6 Vpp Timebase 2 ms Wi IAN NIN HUN NI l II llna lU INN 3 Power Supply Measurements on the primary side of the power supply HS15S1E BOARD KA es ik v a bis mor Mm a ground for scope HR ak B tak Q101 DRAIN voltage 304 5 Vpp a ie a ping Paas Sang Q101 GATE voltage 12 5 Vpp ii uu T R Q102 BASE voltage 1 25 Vpp la icant __ All measurements use 1 10 probe in standby mode oer mT a a For safety reasons do not connect the unit to an AC out outlet Use an isolation transformer FIGURE 3 5 HOT AC LOCATIONS 14 Plug In Communications Figure 3 6 shows the general sequence of IC communications during Plug in time 1 System controller IC104 communicates with Flash Memory to retrieve the Instructions programs In the event the communication with the Flash Memory is not accomplished System control will inform Interface IC 404 to switch the power to standby mode 2 Similarly the initial communication Hand Shaking takes place with IC 503 AV Decoder and IC302 ARP In the event the communication with these ICs is not accomplished System control will inform Interface IC 404 to switch the power to standby mode A failure of any of the ICs IC104 IC503 or IC302 will cause the unit to enter the Standby mode DVP NS500 700 IC Communications at POWER ON Base Unit DVD CD SACD P
6. Initial communications must occur before the unit remains ON and the test mode can be accessed Therefore if the unit does not power up you must confirm the communications between a pair of ICs The flow chart in Figure 7 1 helps you do this This process will determine if the data in the slave IC can be accessed read and written lf communications fail error codes will be out put Each error code identifies error type and IC stage where it occurred How does the test mode operate Activate Main IC as Master Select a SLAVE IC Read the data In the same locations Verify WRITE amp READ Data Access selected Address locations of Slave IC No WRITE amp READ data Same Error not detected Read the current Data and save Different Processioi Write specific data Writing the In the above address data Error code disole FIGURE 7 1 DEAD SET NO INITIAL COMMUNICATIONS 32 Entering the Test Mode 7 Service Test Mode Figure 7 2 shows how to enter the test mode Once in the test mode there are six main diagnoses in the test mode menu TEST MODE Press TITLE CLEAR POWER Please use Remcon previous generation for using Numbered keys 94 CON L IL DEE NAE AD AM NGO PE Toes HEE So Laa HG In ee Son MA Cenc y RISTO Sars ena magloan sir WS 3 GA GA Cp B TET Model code ABG NO Test 00 RET LR HU L Lg C ane ie Fi ut PUSS LMG rik IM FON
7. are thinner than the previous fourth generation models and take up less vertical space Some models are available in both black and silver same model number to blend with different decors Two models DVP F25 and DVP F41 have slot type loading like a car CD player which makes them smaller they can also be played horizontally or vertically a pedestal base can be attached to the side for vertical mounting as in Figure 1 1 DVD slot Models DVP F25 F41 FIGURE 1 1 VERTICAL MOUNTED F SERIES DVD PLAYER Features These players can play computer burned R and RW CD or DVD discs A built in MP 3 decoder allows MP 3 encoded CD s to be played All 5t generation players have outputs for composite video component video Y R Y B Y and Dolby Digital dts digital coax optical digital audio except DVP F25 and DVP F41 models which only have high grade component video and optical audio outputs Other features on some models are multi format SACD music CD PB audio and high resolution 480p progressive video output Table 1 1 shows some of the features of the Fifth Generation models Table 1 1 Sony s Popular Fifth Generation DVD Players Model Number Intro Type Feature Year DVP NS300 2001 1 disc tray Case Blk or Silver finish Does not PB R or RW discs DVP NS315 2002 1 disc tray Black or Silver finish DVP NS400D 2001 1 disc tray Built in 5 1 Digital Dolby Decoder DVP NS415 2002 1 disc tray Silve
8. jump to the upper layer The top waveform is PI and the bottom waveform shows FE The focus layer jump was from LO to L1 The player is in service mode with a DVD DL disc Figure 5 7 shows the track jump back to the lower layer The top waveform is PI and the bottom waveform shows FE The focus layer jump was from L1 to LO The player is in service mode with a DVD DL disc L Etikk ial pan fm JAN TART il ee ee arra FIGURE 5 6 ELECTRICAL VERIFICATION FIGURE 5 7 ELECTRICAL VERIFICA OF JUMP TO THE UPPER DISC LAYER TION OF JUMP TO THE LOWER DISC 23 Testing Tracking Servo Checks Table 5 1 lists the ICs responsible for track jump and basic servo operation Table 5 1 Tracking IC Responsibilities Device Servo Track Purpose Jump arampiczon Ves __ Creates TE votage Seno 10908 Tracing coil Optics Corrects lens position System Control Y Determines when to jump look for another location Y Syscon IC104 EEPROM IC101 Yes Stores previous future jump location HGA IC403 Do Yes Expansion port for Syscon IC104 Testing Checking the TE signal This check is only possible in service mode 1 On the remote press buttons Title clear then Power 2 ASL test disc must be inserted 3 Switch ON the Drive Manual Operation 2 4 Next switch to Disc Type 1 Now check the inserted disc Type select Disc Type Auto Check 1 The detected disc type is shown on th bottom of the s
9. layer 3 Hybrid layer Contains one HD layer and a standard CD layer so it can be played on any standard CD player too Single layer disc CED layer Dual layer disc Co 2 HD layers CUP Hybrid disc CI CD layer Cat HD layer FIGURE 1 6 SACD TYPES Logos High end products that can play one or all versions of SACD discs have at least one of three of the logos shown in Figure 1 7 Front L Center Front R Subwoofer SUPER AUDIO CD Rear L Rear R FIGURE 1 7 SACD LOGOS 1 What s New Video Noise Reduction Block Noise Reduction BNR BNR reduces dissimilarities noise at the edges of blocks Figure 1 8 Block Noise Reduction Block Aoise Reduction The Block Noise Reduction reduces noise at vertical rising block edges caused by the MPEG format The picture looks more smother and more natural Picture details even very small once are not effected Block Noise FIGURE 1 8 BLOCK NOISE REDUCTION Digital Video Enhancer DVE DVE corrects the frequency response of the video signal and emphasizes picture details see Figure 1 9 Since DVE Digital Video Enhancer emphasizes BLOCK NOISE the BNR circuit is used before the DVE DVE Digital Video Enhancer it emphasizes picture details Original Signal Optimized Signal FIGURE 1 9 DIGITAL VIDEO ENHANCER 8 1 What s New Digital Video Enhancer amp Block Noise FIGURE 1 10 BNR AND DVE ORDER
10. these gears also control the rear disc rollers an encoder 2 misalignment can cause the disc not to travel to the rear stacker or grab the disc during PB no spinning Procedure Figure 8 11 mechanism bottom shows that the Clamping motor gears are rotated until cam BU U D is turned fully counter clockwise Place the rotary encoder gear S701 so its mark faces the plastic projection in the chassis as shown Test Rotate the clamping motor At one mechanical limit unloaded as shown in Figure 8 11 the disc is unclamped At the other limit the disc is clamped In between these limits SW716 and SW717 Figure 8 4 close freeing the rear rollers folary encoder 5701 cam BU UWD gear mode 2 wn mark Brajci GRASSAS bation wew front FIGURE 8 11 ROTARY ENCODER 2 FOR CLAMPING STACKER LOADING Disc to Stacker Gear Alignment Concept The clamping motor not only clamps and unclamps the disc it also drives gears to position the rear rollers that move the disc into and from the stacker Procedure As in Figure 8 12 rotate the clamping motor so the cam BU U D is CCW disc clamped Install the Cam gear mark as shown Then as in Figure 8 13 rotate the clamping motor so the cam BU U D is CW disc unclamped Slide the shaft up Drop the mode cam gear in mark as shown in Figure 8 13 and secure Test Rotate the clamping motor At one mechanical limit the mechanism will clamp the disc and in the other the rollers ho
11. 302 CD DVD Data servo DSP Processing Servo Advanced Control RF Processor 16M DRAM IC303 IC301 RAM for ARP IC302 BNR IC601 IC504 Black Noise Reduction A V IC503 IC502 MPEG2 AC 3 Decoder Dolby Digital decoder 64M IC504 IC507 RAM for A V Decoder SDRAM IC505 Analog IC401 IC202 Analog Servo Control Servo 11 Chapter 3 Power Supply Power Supply The 5 Generation power supplies have the following features e No STANDBY circuit Hard wire ON OFF switch SW101 e Simple MAIN POWER SUPPLY circuit Q101 switching osc Q102 PC101 IC301 feedback e Simple Stdby Power ON controll Figure 3 1 shows a block diagram of the power supply HS15S1E BOARD AEP UK AUS E EA HK KP ME RUS SP CH SEE PAGE 4 53 HS15S1U BOARD US CND SEE PAGE 4 61 HS15S1J BOARD TW SEE PAGE 4 57 Lg lt 3 3V ACIN F101 PIO L MK LINE EG FILTER Kr el CN101 D621 ON STANDBY k DRIVE ad b a POWER EVER 11V CONTROL PC101 PHOTO COUPLER E IP So E fo AN AHA ETIE EVER 3 3V FIGURE 3 1 POWER SUPPLY Power ON Operation The power supply circuitry before T101 Primary and after Secondary are explained Refer to Figures 3 1 for the block diagram The load and additional regulators are shown in Figure 3 2 Primary After closing main switch SW101 oscillator circuit Q101 and the primary coils of T101starts Regulation comes from samp
12. 5 CW R313 RSI R312 L RE Servo measurements I IC201 DVD play IC201 CD play 200 mViDIV 50 ns DIV ATE CG ae E CSR R EFEN NAN INAANO AMAA RAGA RDA AVA AAU AMA MAKA KAKA KALAN ka KA KGG MG LNG N 570 mVp p 550 mVp p 540 mV RFMON 460 mV REMON IC201 68 DVD play IC201 63 CD play SOO mV OlY 50 nsiBl 500 mV DIY 200 ns DIV ee ee ee TUTA ESSAY ve aes a ANY RRR RS YR RRO ONE IOO 4042 ASSAT 1 4 Vp p RF in 1 amp 2 of IC 302 1 4 Vp p RF in 1 amp 2 of IC 302 FIGURE 4 4 Focus and Tracking Error Test Points Figures 4 5 and 4 6 show the focus test points and waveforms PI TE FE measurements locations IV Ely PINT37 york 329 IG meme NNC326 aS ova R 311 De FIGURE 4 5 20 4 Testing and Test Point Access RE Servo measurements III C302 DVD play IC302 GP CD play 500 mv Bl 50 ms DIY 500 mVIDIV 200 mw DIV 1 4 Vp p 1 7 Vp p TE TE IC302 DVD play IC302 CD play 100 MV DIY 50 ms DIV 500 mWDIV 50 ms DIV kia ha AMU AA OT aa UN Pe i is 0 E 860 mVp p FE FIGURE 4 6 21 Chapter 5 Testing RF Focus Tracking Servo Optical Assembly The service or test mode permits us to repeat a signal so we can see it on the scope and verify its operation In the first test a YEDS 18 CD test disc was used to check focus and optical assembly detectors by looking at the PI and FE signals Entering the Service Test Mode 1 Using the
13. AL ASSEMBLY FIGURE 1 3 TILT SERVO A VS DTC B caws 1545 4 90 ASSEMBLY REMAINS HORIZONTAL DTC WARP DISC COMPENSATION In fifth generation DVD players an ingenious Dynamic Tilt Correction DTC system replaces the tilt servo Warped disc readability is achieved by tilting the lens during focus correction The greater the focus correction the more the tilt The DTC concept and mechanics are as follows The DVD disc information layer is at a height determined by the spindle motor hub This is considered as the mechanical focus center of the lens As the optical block moves towards the outside of the disc disc warp increases At the points where the disc is angled up by warp the focus point also moves up to compensate Raising the focal point causes the lens to change its angle and remain perpendicular to the disc Conversely when the disc angles down Figure 1 2 B the lens focus goes below center and the lens tilts in the opposite direction Mechanically DTC is achieved by modifying the lens supports The front lens supports are stronger than the rear See Figure 1 4 As the lens moves up it is tilted toward the weaker support As it moves down the lens is tilted toward the stronger support The tilt is always in the direction of the warpage so the lens remains perpendicular to the disc Weak Stronger Rear Front Support Support FIGURE 1 4 DTC SYSTEM Disc Identification The DVD player first determines
14. D ICs IC106 Or IC107 FLASH OTP IC601 IC603 4 Audio hala l I l DSP D A lill onverterl EEPROM l l l l ND401 FLD Chuck Tray Detect FIGURE 3 6 The Plug In communications sequence is as follows 1 AC plug in Ever 3 3V is applied to Interface 10404 PIN 78 401 8MHz becomes active Pcont from IF IC404 Pin 26 goes HIGH to Power the set After this sequence of Power ON the following communications will take place as shown in Figure 3 7 e Ready Pulse is output from IC404 Pin 27 interrupt line to begin communications with IC103 4 e System Controller IC103 4 sends chip select from Pin 51 to IC404 Pin 14 e System Controller IC103 4 sends bit clock Pin17 and display data Pin 26 to IC404 6 If users command have been initiated then these commands will be sent from IC404 Pin 16 to IC 103 104 Pin 25 Otherwise IC404 will bring Pcont low and RST pulse Pin 7 will be sent to IC103 4 Pin 76 7 Set goes to Siby oF W N 15 0404 co srs O O erial Clock 9 Chip Select XFRST 7 6 Ever 3 3 V Plug In Std By Reo LED en on maa 1 3 Seconds FIGURE 3 7 PLUG IN SEQUENCE Serial Data Communications after Power ON The serial data bus connects several ICs and consists of two or three lines Serial data is transmitted from one IC to another on a unidirectional line arrows shown in one direction This data is accompanied by a clock signa
15. ER Key T FIGURE 7 2 ENTERING THE TEST MODE Contents of the Test Mode System control diagnosis can give the diagnostic information in the All check or for individual stages Refer to Figure 7 3 Once you select All the system controller will communicate with stages and if there is an error its code will be displayed You may also choose Individual stages for diagnosis Please refer the service manual for more details TEST MODE Select 0 in the Main Test mode to view Syscon Diagnosis syscon Diagnosis m m Na 8 P CP GG RT Ai LS R LU AT lersion Peripheral supply Decoder FIGURE 7 3 FIRST PAGE OF THE TEST MODE 33 Chapter 8 Mechanical Operation The model DAV C770 C990 is an AM FM 5 1 channel receiver with a 5 disc CD DVD player The CD DVD service information is found in the core HCD C770 C990 service manual The core manual does not have part numbers for the AM antenna speakers and remote 1 477 332 11 This new 5 disc changer will require alignment if gears are replaced FIGURE 8 1 DAV C990 CORE UNIT This single slot disc entry mechanism uses three motors two rotary encoder sensors for transport position and seven disc location sensors The repair information is grouped as follows Powering the Unit CD Mechanism Normal Operation Disc loading Stacker and Disc Clamping Motor Drive Access Gear Alignment Concepts Procedure and Test
16. Life aa gi bA pa A B ka Lt n ae 0 j m Pay Pa Ee PF Pi L ne A 0 La pi F j i ndi 21 Conneclal FOM 001 CH201 3 f 4 Connector ih a x CN102 na H MB 101 board CD Flexible flat cable CD Flexible Mat cable iFMM 0355 MB 101 board CE1 Connector x RER L SA Crang i 21 Connector FMM 46 CN203 FMI 0074 CN403 AV B CN ic2 CH203 FFC13P EXCEPT AEP UK Russian FFG27P FEC1SP AEP UK Russian CNB CN501 HARNESS 152 CA 102 FFO26P Tr CM MB 101 FEC 9P En H 3 Mechanism deck FFC SP CA204 CN101 CN407 FEC 8p CHDI IF ad FIGURE 5 10 USING THE TRANSPORT EXTENSION JIG J6090 116A 25 5 Testing Pa Z a ma Pa NA a apan POH aapna peed Figure 5 11a Jigged DVD Player Top View Figure 5 11b Jigged DVD Player Side View 26 Chapter 6 Troubleshooting Process Flow This section is divided into flow charts targeted for general symptoms A No Test Mode Menu B No Power C Checking the Laser No Test Mode Menu Figure 6 1a diagnoses the symptom of No Test Mode Menu e f 33 MHz is available at Pin 77 at IC 103 104 communications between Flash ROM and Syscon are probably OK e f 33MHZ clock output is missing at Pin 77 either System controller and related power supply circuits or the Crystal may be faulty Try changing the Crystal before replacing the IC Trouble Shooting No Test Mode Menu If the IC
17. SONY Training Manual DVP NS655P DVP NS875P 5th Generation DVD Player Models DVP NS300 DVP NC650 DVP NS315 DVP NC655P DVP NS400D DVP CX87 75P DVP NS415 DVP F25 DVP NSSOOP DVO F41MS DVP NS700P DVP NS715P DVP NS755P DVP NC600 Circuit Descriptions amp Troubleshooting Table of Contents 1 Wha s New paaa nia 1 Physical Differences a 1 FC ALUMS roo care 2 Dual Laser Optical Block a 3 Dise eua He Mesen 5 Super Audio Compact Disc SACD 6 LOGO ana 7 Video Noise Reduction sss sse 8 2 Block diagram ssssseeesssseeeeees 10 3 Power Supply sss sss sss sss esse esse 12 Plug In COMMUNICATIONS sss see eee ee eee e 15 4 Testing and Test Point Access 18 De LESUNG ANNA 22 JIGS ANG Le 0 AA AA 25 6 Troubleshooting cccecseeeseeeees 27 FP FOCESS FIOW maa En NANA 27 7 Service Test Mode ccccccsseseeeeees 32 8 Mechanical Operation 00c0 35 Powering the Unit a 34 CD Mechanism Normal Operation 35 Disc Loading Stacker and Disc Clamping Motor Drive ACCESS aaa 37 Chapter 1 What s New The popular fifth generation Sony DVD players introduced for the years 2001 and 2002 are physically and electrically different from previous generation players they have greater appeal and are lower in cost Physical Differences The single disc players
18. creen it should be DVD SL 12 cm Push RETURN and select Servo Control 2 Start PB by switching LD ON 1 SP ON 2 and Focus ON 3 See Figure 5 8 7 The measured traverse TE signal level is aproximately 1 6 Vpp The DC Level in relation to VC is around 780 mV D o FIGURE 4 8 SERVO CONTROL TV SCREEN IN DVD SERVICE MODE 24 5 Testing Testing TE traverse check Figure 5 9 Traverse waveforms quickly checks the detectors dynamically TE is disabled turned OFF from Figure 918 screen to Earlier you checked the FE signal for symmetry equal Produce this waveform Signal level approx 1 6 Vpp SL disc DC level in amount of signal above and below the center Vc point That proved the A D detectors were balanced equal output at normal PB levels The Traverse waveform Figure 5 9 checks the balance of the same detectors dynamically at a higher light level such as when the optical assembly is a moving to another track or layer IN KAYA il ULI 1 AIN Ii f Hi 1h HSI 1 VW f 1 1 1 PI ii 1 H li Jigs and Tools Extender cable package J6090 116A permits you to move the Mechanism Deck so you can access areas underneath You can also access under the MB board and see the Mechanism operation from the bottom See Figure 5 10 3 Harness MI 9A OO Two Nesible flat cables PUCN4O FOMHOOT FIAM 046 Mechanism deck GP Fi
19. eflect best in the 650 635nM wavelength band CD discs including R or RW discs reflect light best at 780nM Figure 1 2 shows that maximum CD R disc reflection RF occurs at 780nM Since R or RW discs have lower reflectivity than stamped discs reflectivity also varies from brand to brand output is maximized if two lasers are used one operating at 648nM for DVDs and another at 780nM for CDs Optical Pick up CD z 12cm DVD 0 6cm Reflective KHM 240 650nM 780nM Wavelength A For CD For DVD FIGURE 1 2 Disc Warp Correction Because of the finer DVD pitch the laser must be perpendicular to the disc for maximum RF output from the optical block Figure 1 3 illustrates the differences between old servo tilt mechanism system A and the new DTC system B that keeps the laser beam perpendicular In earlier generations a tilt servo A adjusted the angle of the laser platform to keep the monitored RF level at peak This system is complex and the platform can bottom out limiting its range DISC 7 n iN WHOLE PIVOTS UP ASSEMBLY ROTATES FROM eee HORIZONTAL ASSEMBLY x DISC WHOLE ASSEMBLY ROTATES FROM HORIZONTAL OPTICAL DN IT ASSEMBLY PIVOTS DOWN LIMITED RANGE W TILT SERVO WARP ISC COMPENSATION ILLUSTRATES DISC S ROTATION OF LENS ONLY ASSEMBLY REMAINS K HORIZONTAL DISC ILLUSTRATES ROTATION OF LENS LENS N ONLY OPTIC
20. etween 1 3 and 2 6 Volts If outside of this range the VCO Is not operating and the unit will shut down Check this voltage after switching ON the set with a disc inserted Trouble Shooting Tips No Power Check VCO At Pin 106 IC 302 Check limit Switch Pin 166 Check Pin 106 While turning on off VCO 1 3 2 6 V Varies from model If O volt indicates no oscillation INLIM Sensor FIGURE 6 2 NO POWER FLOW CHART Checking Laser Current The laser diode is extremely sensitive to static electricity and should not be probed with test probes Laser diode current can be checked by determining the voltage drop on the emitter resistors of Q201 and converting it to current using ohms law See Figure 6 3 30 Emitter current L is calculated as V R Since in our example R consists of two parallel resistors the equation becomes L V 1 1 R207 1 R208 In our example V 0 9V and the emitter resistors are both 33 ohms so the calculation becomes l 0 9 1 1 33 1 33 0 9 1 0 030 0 030 0 9 16 6 0 054A or 56MA IC no marked in red NS700 IC201 DVD LD out PIN 25 How to test Laser Diode CD LD out PIN 26 IC202 R207 DVD CD LD out 33ohm O5 Laser Diode of OPU FIGURE 6 3 LASER DIODE CHECKING 31 Chapter 7 Service Test Mode Service mode testing consists of the following 1 Initial Communications 2 Entering the Test Mode 3 Contents of the Test Mode Initial Communications
21. ing Powering the Unit The top cover contains the CD operation buttons that must be connected for the mechanism to operate 34 8 Mechanical Operation 1 Remove the top cover unplug black connector CN807 power ON to micro and lay the top panel on the side Do not shear or disconnect the white ribbon connector CN814 to CN005 2 Plug the unit into AC and press the power ON button The unit will not power ON until the micro receives the power ON via CN807 3 On the front panel circuit board as shown in Figure 8 2 jump CN807 The unit should power up and show the model number in the display followed by Ready FIGURE 8 2 COVER OFF POWER ON CD Mechanism Normal Operation Loading The disc entry is detected either by a photodetector or by Switch SW 11 closing The loading motor starts and turns rollers to pull the disc in The remaining switches on top SW 11 to 18 shown in Figure 8 3 and Table 8 1 determine the position of the disc and its size to the microprocessor The disc enters overshoots the center and returns to center loading motor reverses so SW 14 momentarily opens Figure 8 4 lists the switch positions during loading and Disc IN O Open C Closed M Momentarily amp FIGURE 8 3 CD MECH TOP VIEW 35 17 18 15 13 11 Switch 14 lt boards Sw SW SW SW M M C C M Switch M M lt boards SW SW S 0 C E L Switch O C lt boards FIGURE 8 4 DISC SWITCH STATES Table 8
22. l for a total of two lines in a unidirectional serial communication The interface control IC404 and syscon IC104 communicate bidirectionally arrows shown in two directions Three lines are necessary when bi directional transmissions are used There is a data line for each direction The additional clock signal makes a total of three lines for a bi directional serial bus The clock signal usually comes from the controlling micro which in this case is syscon IC104 IC104 communications with interface IC404 EEProm IC101 SACD decoder IC806 SACD bass management IC807 and DSP IC601 are bi directional Syscon communications to the Digital to Analog Converters DAC IC603 IC604 are uni directional 16 3 Power Supply Parallel Data Communications after Power ON See Figure 3 8 The parallel data bus consists of address lines data lines a WE write enable and a RE read enable line and a clock line The parallel bus is contoleed by system control IC202 CS FROM CS FROM CS FROM CS FROM CS FROM IC6O1 IC202 IC202 IC202 IC601 IC906 7 C905 DAC C201 201 DAC INTERFACE k REAR PRENIT CENTER CONTROL EEPROM cs SERIAL BUS CHIP CS FROM cS FROM C5 FROM C5 FROM SELECTS IC202 C202 IC202 CHIP IC601 SELECTS IC202 SYSTEM s C204 PARALLEL BUS FIGURE 3 8 COMMUNICATIONS BLOCK 17 Chapter 4 Testing and Test Point Access This section is divided into two parts 1 Test point access and 2 testing
23. layer an equal distance away 28 ms A DVD dual layer is played back HLX 501 S Curve max 1 6 Vpp The player is in service mode DVD DL 8 PI Level 1 0 8 Vp a S back Sarat Bus a et Te LECHE a UB 0m 26 ms sf eet aaa saad il 2 layers are alaa AE L ia Ek Zeus p a 22 Verifying Focus Layer Jumping This check is only possible in service mode A dual layer disc must be inserted 1 2 5 Testing Switch ON the Drive Manual Operation 2 Next switch to Disc Type 1 Now check the inserted disc Type select Disc Type Auto Check 1 The detected disc type is shown on th bottom of the screen it should be DVD DL 12 cm Push RETURN and select Servo Control 2 Start disc PB by switching the following ON LD ON 1 SP ON 2 Focus ON 3 TRK ON 4 Sled ON 5 and CLVA ON 6 FIGURE 5 5 TRACK LAYER JUMP SCREEN Push RETURN once again and select Track Layer Jump 3 On the right side of the screen Figure 5 5 you will see the information for controlling layer jumping Use the UP amp Down buttons of the remote controller as follows L1 to LO push once the UP button LO to L1 push once the DOWN button The layer jump will be performed After jumping PB will continue on the other layer as indicated by the advancing sector frame numbers Figure 5 6 shows the track
24. ld the disc In between these limits SW716 and 5W717 Figure 8 4 should close freeing the rear rollers See Figures 8 14 and 8 15 for the position of the clamping motor gears in the two extremes FIGURE 8 12 DISC TO STACKER GEAR ALIGNMENT 1 DISC CLAMPED 41 8 Mechanical Operation cam gear FIGURE 8 13 DISC TO STACKER GEAR ALIGNMENT 2 DISC UNCLAMPED FIGURE 8 14 UNCLAMPED MECHANISM POSITION 42 8 Mechanical Operation FIGURE 8 15 DISC CLAMPED ROLLERS DISENGAGED MECHANISM POSITION 43 SONY and SACD are trademarks of Sony Electronics Dolby Digital is a registered trademark of Dolby Laboratories Licensing Corporation dts is a registered trademark of Digital Theater Systems Inc 2003 Sony Electronics Inc EMCS A Service Company DVD50403 Ana 4 11 03 Park Ridge New Jersey 07656 Reproduction in whole or part without written permission is prohibited All rights reserved
25. ling the secondary 3 3 V at L611 The sample is sent to inverter shunt regulator IC301 to the opto coupler PC101 and finally back to oscillator Q101 EVER 3 3V from Q411 is switched via the other leg of SW101 and is applied to power ON LED D621 RED drive It is also applied to IC404 pin19 not shown as a P DET signal The output of IC404 controls the rest of the power supply secondary circuit via the P CONT line EVER 3 3V powers IC404 IR remote receiver cursor stick and audio muting all not shown 12 3 Power Supply Keep in mind that SW101 is a hard off switch With the switch OFF the unit will not turn ON with the remote Soft ON OFF standby is controlled by the P CONT line and Q712 it controls 11V via Q211 5V via Q311 and SW 3 3V via Q611 Power Supply 8 AV 59 Board rd AV 59 BOARD aaa Al 5V 6 AALO S KI IC101 a 5V REG NG IC102 2 IN 3 VIDEO Oo OON SS N N P BUFFER L AU 11V gt 7 i IC202 SW 11V AUDIO AMP IC203 5 1CH FRONT AUDIO AMP EVER 9 3 IC204 5 1CH REAR AUDIO AMP OPTICAL DIGITAL _ ol IC205 OPTICAL le 5 1CH CENTER WOOFER i E AUDIO AMP IA EI ET AA ee ee AUDIO D A FIGURE 3 2 ADDITIONAL REGULATORS 3 5DVD5 4 11 03 Waveforms These waveforms were taken at key areas of the power supply Figure 3 3 Scope Shot Q101 Drain Stby Figure 3 4 Scope Shot Q102
26. r Built in 5 1 Digital Dolby Decoder DVP NS500P 2007 7 disc tray DVP NS700P 2001 1 disc tray DVP NS715P 2002 1 disc tray Progressive scan Silver DVP NS755P 2002 1 disc tray Progressive scan SACD Built in 5 1 Digital Dolby Decoder BIk DVP NC600 2001 5 disc Changer No thinner case like the tray units DVP NC650 2001 5 disc Changer SACD DVP NC655P 2002 5 disc Changer Progressive scan Blk Silver DVP CX875P 2002 300 disc changer Progressive scan Built in 5 1 Digital Dolby Decoder DVP F25 2002 1 disc slot Case Blk or Silver finish DVP F41MS 2002 1 disc slot Memory stick for JPEG pix view Optical Assemblies for 2001 year Models are KHM240AAA and KHM250AAA Optical Assemblies for 2002 year Models are KHM270AAA and KHM275AHA 1 What s New Dual Laser Optical Block Disc Playback Characteristics All fifth generation DVD models except basic model DVP NS300 can play back computer made R or RW discs Computer made burned R or RW discs have different characteristics than machine stamped counterparts and stamped CDs have different characteristics than DVDs To insure full compatibility the optical block uses two lasers One is optimized for CDs and the other for DVDs To understand how separate lasers insure playback of computer burned discs some basics are explained here The reflected Laser light from the disc to the optical block contains the data DVD discs including DVD R and RW discs r
27. r and drop the stacker in place this is above the top tray 5 position Lastly in Figure 8 9 place the large stacker Communications gear in place 38 8 Mechanical Operation Stacker Alignment Area Test By rotating the large stacking gear while watching the stacker for free vertical travel Stacker Alignment Area ng 6 gt laaa A AAE Wide tooth faces boss FIGURE 8 8 ROTARY ENCODER 1 ALIGNMENT 39 8 Mechanical Operation Rotate screws and drop Ki stacker pin into slot Na Stacker gear alignment hole PET TLA FIGURE 8 9 STACKER GEAR AND SCREW ALIGNMENT Disc Entry Lockout Gear Alignment Concept This single gear alignment prevents another disc from being inserted by locking the entry roller guides from moving when a disc is clamped Procedure As in Figure 8 10 mechanism bottom rotate the Clamping motor gears until cam BU U D is turned fully clockwise Insert the smaller cam eject lock gear with the mark as shown Test The first disc entry rollers should be free to move SW711 in Figure 8 7 Rotate the Chucking motor so the Cam BU U D is CCW opposite Figure 8 10 The disc entry rollers should now be inhibited so they just move enough to close SW711 gear eject bok cam aject lock DOT V POL FIGURE 8 10 DISC ENTRY LOCKOUT CAM GEAR 40 Clamping Motor Rotary Encoder 2 Alignment Concept Rotary encoder 2 S701 sets the clamping motor limits Since
28. remote press these buttons TITLE CLEAR then POWER 2 From the test menu select Drive Manual Operation select Disc type select the disc type in the unit 3 From the Drive Manual Operation menu select Servo Control turn on 1 LD and 7 FCS Srch 4 Connect the CH1 scope probe to PI and the CH2 probe to FE Testing Focus After using the service mode to repeat one time operations the focus tracking and RF signal levels can be monitored Figures 5 1 to 5 4 show normal servo operation Figure 5 1 CD Focus error showing balanced A D detectors Figure 5 2 DVD Focus Error showing same detectors are still balanced at the FE is equal above and below center The 1 PI pip occurs at disc entry higher DVD laser frequency Balanced FE means faster recovery after disturbance A DVD single layer is played back HLX 503 S Curve 1 5 Vpp The player is in service mode DVD SL PI Level 1 Vp zW CHE 6 5m wi 28 ms When a CD is played back YEDS 18 S Curve 1 5 Vpp The Player is in service mode CD PI Level 1 Vp de m eS I 1 eps i i F vl i i vanilla JE ma ina E E ECE Li 1 2am RE HHH S 2 B aa 0 Sete DY TI Ta Figure 5 3 DVD Focus Error of a Dual Layer DL disc Two FE signals Figure 5 4 Hybrid SACD Focus error and PI level shows three pips 1 disc of equal amplitude mean both layers can be identified surface entry 2 HD layer 3 CD
29. s are different IC no marked in red NS700 Visual Check 1 SYSCON IC103 104 2 ROM IC107 or 108 106 or 107 3 AVD IC503 502 4 ARP amp SERVO IC302 FIGURE 6 1a NO TEST MODE 27 6 Troubleshooting In Figure 6 1b missing read write data may be caused by a power supply failure or if Syscon IC104 held is in constant reset Trouble Shooting No Test Mode Menu _ No 33Mhz output If the ICs are different IC no marked in red NS700 SYSTEM CONTROL IC103 1 04 S ROM 1C107 or IC108 106 or 107 No 33 Mhz output at Pin 77 Of IC 103104 Syscon Power supply voltage check AVD IC503502 ARP amp SERVO IC302 Reset signal 76 XFRRST Should not be fixed to H L or check H O ICI031C104 something in between 3 3 V XRD OE 1C103 104 XRD XWRH CS0X XWRH WE HA 0 21 amp HD 0 15 E syscon a ioe signals check os E Flash ROM HAS HD L HA amp HD FIGURE 6 1b NO TEST MODE If 33 MHz is present but not the Test Mode menu then follow the procedure in figure 6 1c at IC503 AV Decoder IC Trouble Shooting No Test Mode Menu 33Mhz output Ok C sey gt If the ICs are different IC no marked in red NS700 AVD Check 33 Mhz output at Pin 77 Of IC 103 104 Syscon 27MHZ from Yes PLL IC102 95Mz Check 95Mz At Pin 149 CLKI x O U IC503 502 CXD1933Q Check 27Mz Across Pin 182 Pin 180
30. the RF and servo sections using the service test mode The signals are generated by the optical assembly s photo detectors as listed in Table 4 1 Table 4 1 Photo Detector and Their Manufactured Signals Photo Signals Purpose Detector TE DVD only TE DVD tracking error FE Pl Mirror RF eye FE Focus error pattern PI Pull In is the analog sum of A D detectors Disc ID the disc and MIRR MIRR counts tracks and ID disc RF Sum of A D detectors TE andTZC CD tracking error track counting TE andTZC CD tracking error track counting Access RF Output The RF test point is easily accessed See Figures 4 1 through 4 3 Figure 4 4 shows the RF waveforms RE measurements locations I Sa ot HY 241 L 7 N at o YL R209 R270 BG FIGURE 4 1 IC201 RF TEST POINT 18 4 Testing and Test Point Access MB 101 board side A AA D jj a kl ee oe a K ap 5 ay Tey re 4 Ha r med een Hi i ir T N i Yo PRA LG po Ta a B d i 1 ik BABATI a 3 i CN p 3 z AE Pisa PA ie Te i Zak a U a ti t ig PG REE TRA SL Y R S 1 29 iin T L ME a e de Abi HG 05 SEP Pana gi mi 7 ae i rere K H T h a L 1 c garia EP Testpunkt RF Monitor CN104 PIN1 pia Da FIGURE 4 2 ALTERNATE RF TEST POINT RF measurements locations HI 6909 PIN128 RF in 2 8 PIN131 RF in 1 Co RIZS c30 4k d Ae C3 S Thats K MI CLO O C30
31. what type of disc is in the tray before playing it The player powers up one of the lasers and begins looking for the disc s information layer s The time it takes to find a layer determines how deep the layer is inside the disc T 0 6cm 2T 1 2cm Because the tracking servo is disabled at this time the lens will continue past the focus point of the DVC and look for a second information layer DL disc The disc ID method is shown in Figure 1 5 This procedure is repeated with the second laser to insure identification of the lower output R and RW discs Figure 1 5 also shows that the laser takes the least time to find a DVD disc Figure 1 5 B C or D If a second focal point is also found the disc is either a dual layer DVD Figure 1 5 C or SACD Figure 1 5 D DISC IDENTIFICATION A w PI INFO LAYER Disc Type CD DVD SACD INFO LAYER SL DVD SACD DL CD layer SACD HD LAYER Hybrid T T DISC ENTRY FIGURE 1 5 DISC IDENTIFICATION Super Audio Compact Disc SACD There are three types of SACDs all played from the bottom of the disc disc is not flipped over See Figure 1 6 single Layer The single high density HD layer can contain 2 channel and multi channel DSD recordings text such as song tiles and lyrics video clips and graphics 1 What s New 2 Dual layer Two layers with twice the playing time information as a single
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