Samsung DVD-HD850/XAA Service Manual Download Page 78

Page: 78 / 94

Circuit Operating Descriptions

13-8

Samsung Electronics

RF (FROM P/U)

RFAC

RFSIN

102

103

RF EQ

SIGR

ATOP

ATON

AIN

AIP

FCCR

CAR

Fig.13-12

Fig.13-12 shows the waveform-equalizing block diagram for the RF signal.
RF signal from the pick-up is the input of RF equalizer module of RIC1 (SP3723).

Summary of Contents for DVD-HD850/XAA

Page 1: ...tion Multimedia Interface Manual DVD PLAYER Merit Character regarding Product SERVICE MANUAL DVD H850 EZ VIEW DVD HD850 ELECTRONICS Samsung Electronics Co Ltd JAN 2005 Printed in Korea AK82 00702A This Service Manual is a property of Samsung Electronics Co Ltd Any unauthorized use of Manual can be punished under applicable international and or domestic law ...

Page 2: ... 5 Trouble Shooting 5 1 5 8 6 Exploded View and Parts List 6 1 6 6 7 Electrical Parts List 7 1 7 6 8 Block Diagram 8 1 8 2 9 Wiring Diagram 9 1 9 2 10 PCB Diagrams 10 1 10 4 11 Schematic Diagrams 11 1 11 8 12 Operating Instructions and Installation 12 1 12 24 13 Circuit Operating Descriptions 13 1 13 16 14 Reference Information 14 1 14 8 ...

Page 3: ...erwriters Laboratories UL 1270 40 7 With the instrument s AC switch first in the ON position and then in the OFF position measure from a known earth ground metal water pipe conduit etc to all exposed metal parts of the instrument antennas handle brackets metal cabinets screw heads metallic overlays control shafts etc espe cially any exposed metal parts that offer an electri cal return path to the ...

Page 4: ...nched out of place or frayed wiring Do not change spacing between a component and the printed circuit board Check the AC power cord for damage 5 Components parts and or wiring that appear to have overheated or that are otherwise damaged should be replaced with components parts and or wiring that meet original specifications Additionally determine the cause of overheating and or damage and if neces...

Page 5: ...d lead last 2 The service precautions are indicated or printed on the cabinet chassis or components When servic ing follow the printed or indicated service precau tions and service materials 3 The components used in the unit have a specified flame resistance and dielectric strength When replacing components use components which have the same ratings Components identi fied by shading by or by in th...

Page 6: ...posure of the assem bly 3 Use only a grounded tip soldering iron to solder or unsolder ESD devices 4 Use only an anti static solder removal devices Some solder removal devices not classified as anti static can generate electrical charges suffi cient to damage ESD devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ESD devices 6 Do not remove a ...

Page 7: ... sheet This gives them the same ground as the sheet 4 Remove the optical pick up block 5 Perform work on top of the conductive sheet Be careful not to let your clothes or any other static sources to touch the unit Be sure to put on a wrist strap grounded to the sheet Be sure to lay a conductive sheet made of copper etc Which is grounded to the table Fig 1 3 6 Short the short terminal on the PCB wh...

Page 8: ... Assy 3 Make solder land 2 points short on Pick up See Fig 1 4 4 Disassemble the Pick up 1 5 2 Assembly 1 Replace the Pick up 2 Remove the soldering 2 points on Pick up 3 Reassemble the Deck Assy PICK UP ASS Y SOLDER LAND 2 POINTS SHORT Note If the assembly and disassembly are not done in correct sequence the Pick up may be damaged Fig 1 4 ...

Page 9: ...sec Disc Compact Disc Maximum Play Time 74min CD 8cm Reading Speed 4 8 5 6m sec Compact Disc Maximum Play Time 20min VCD 12Cm Reading Speed 4 8 5 6m sec Maximum Play Time 74min Video Audio Composite Video 1 channel 1 0Vp p 75ohm load Component Video Y 1 0 Vp p 75ohm load Pr 0 70 Vp p 75ohm load Video Output Pb 0 70 Vp p 75ohm load S Video Luminance Signal 1 0Vp p 75ohm load Chrominance Signal 0 3V...

Page 10: ... D Ti D D rive F AN8026 FAN8026 FAN8026 A V Z R36778 ZR36778 ZR36778 6dB_AMP L A73054 LA73054 PCM1753 H D DV Z R36721 FLI2301 ZR36721 DAC D SD1608 DSD1608 X S ACD S AA7893 SAA7893 X NTSC D efault NT NT NT PSO NT NT NT 3D DTS Digi Digi Digi D Audio O S ACD M Card MPEG4 MP3 P CD WMA VCD S VCD X X X X X X X X X X X O O O O O O O O O O O O O O O O O O O O O ...

Page 11: ...tronics 2 3 Option Product Specification Remote Control AK59 00038A Batteries for Remote Control AAA Size AC43 12002H User s Manual AK68 00627A Video Audio Cable AC39 42001R HDMI Cable MF39 00299A Description Fig Description Parts No Remark ...

Page 12: ...ayer Dual Layer Laser Wavelength 650nm 635nm 780nm Track Pitch 0 75um 1 6um Disc Diameter 120mm Disc Thickness 1 2 0 6 x 2 mm 1 2mm Linear Velocity 3 49m s 3 84m s 1 2 1 4m s 2 Disc Formats DVD consists of two 0 6mm discs attached together enabling access to the upper and lower side of the disk and 4 sides could be used at maximum Single Layer 4 7GByte Polycarbonate Label Bondinglayer Reflectivela...

Page 13: ...nd sound for movies and other video media DVD ROM Read Only Multi functional multi midia software that requires large storage capacity DVD Audio Playback Only High quality sound that exceeds the CD multi channel Audio DVD R 1 Time Recording Storage media for the computer DVD RAM Rewritable Data access storage media for the computer ...

Page 14: ...ich enables the user to select the scenario 7 Multi Angle Able to view the camera angle you selected among the scenes recorded with multiple camera angles Note The above media features must have the DVD Title that contains the appropriate contents to function properly 2 5 2 Audio Video Specifications Classification DVD Video Video CD LD Compression MPEG 2 MPEG 1 Analog Pixel 720 x 480 352 x 240 VI...

Page 15: ...Feature 1 When Developing the DVD Software various addition and modification is possible DVD Video uses the variable compresion technology the MPEG 2 to compress the moving image optimally mini mizing the Data loss to Provide a clear natural screen while increasing the storage time DVD Video Feature 2 Application of the MPEG 2 compression technology MPEG 2 Variable compression Max 1 40 Field unit ...

Page 16: ...conventional Dolby Pro Logic and Stereo are all compatible Each separated channels are played back at CD quality sound Frequency band 20Hz 20KHz Linear PCM Pulse Code Modulation Provides the high quality Digital sound without the audio data compression Various Digital Recordings are possible as shown in the table to the right DVD Video Feature 3 High quality surround audio Sampling Frequency Bit R...

Page 17: ...lities 16 9 TV Wide Mode 16 9 Wide Full Screen 4 3 TV Letter Box Mode Pan Scan Mode DVD Video Feature 5 Multi Aspect 4 3 Pan Scan 16 9 Wide 4 3 Letter Box Up to 9 angles of view may be stored enabling the viewer to select a specific viewpoint at a given time Especially for the Music Video and Sports Title this provides a more lively image of the scene DVD Video Feature 6 Multi Angle Note Only enab...

Page 18: ... Classify the world into 6 regions and if the DVD Title and the Player s Reginal Code do not agree playback is prohibited Regionnal Coding is optional for the Soft developers Region 0 All Code but the Hardware developers must adopt the appropriate regionnal code for sale Region 1 The United States and its territories Canada Region 2 Europe Japan Greenland Egypt South Africa the Middle East Region ...

Page 19: ... as the conventional LD VCD or Original Film Different Authoring Process are used accoring to the Software developers and this may affect the DVD image quality Authoring Process Remark DVD Video Authoring Process Video Audio Master Surround Audio Master Subtitle Master MPEG 2 Encoding AC 3 MPEG Audio Encoding Cutting Master Disc Production Subtitle Encoding Authoring Process Video Audio Subtitle M...

Page 20: ...Product Specification 2 12 Samsung Electronics MEMO ...

Page 21: ...Samsung Electronics 3 1 3 Alignment and Adjustment 3 1 Location of Test Point Fig 3 1 Location of Test Point RIC1 SP37239 RIC1 SP37239 Pin29 of RIC1 ...

Page 22: ...t Point 3 2 Skew Adjustment Test Disc Adjustment Spec Test Point Adjustment Location TDV 533 Pin 29 of RIC1 Screw A B Chapter 14 Flat Waveform Main PCB Component Side Ass y Deck Top Side See Fig 3 1 See Fig 3 2 Fig 3 2 Ass y Deck Top Side Test Disc Service not Available Table 3 1 ...

Page 23: ...Set the Oscilloscope Range as follows Voltage 20mV Div Frequency 10m Sec 3 Adjust the Screws A and B See Fig 3 2 using a Hex screwdriver until you obtain a Flat Waveform and the picture is stable Then go to Chapter 1 and make sure the Waveform is Flat here as well If not you have to go back to Chapter 14 and adjust again If you cannot obtain a Flat waveform then the unit is defective Note The Deck...

Page 24: ...Alignment and Adjustment 3 4 Samsung Electronics MEMO ...

Page 25: ...mbly and Reassembly 4 1 Cabinet and PCB 4 1 1 Top Cabinet Removal 1 Remove 4 Screws Œ the back Top Cabinet 2 Lift up the Top Cabinet in direction of arrow Œ 3 SCREWS 1 SCREW Fig 4 1 Top Cabinet Removal Note Reassembly in reverse order ...

Page 26: ...sassembly and Reaasembly Œ 3 HOOKS ˇ 1 HOOK 1 HOOK A ssy Front Cabinet 2 SCREWS ˆ Fig 4 2 Ass y Front Cabinet Removal 4 1 2 Ass y Front Cabinet Removal 1 Remove 2 Screws ˆ 2 Release 5 Hooks Œ ˇ and Remove the Ass y Front Cabinet ...

Page 27: ...y Samsung Electronics 4 3 DCN1 DCN2 ASS Y DECK Œ 3 SCREWS FLAT CABLE 4 1 3 Ass y Deck Removal 1 Disconnect Flat Cable from DCN1 DCN2 on Main PCB 2 Remove 3 Screws Œ from the Ass y Deck and lift it up Fig 4 3 Ass y Deck Removal ...

Page 28: ...4 4 Samsung Electronics Disassembly and Reaasembly Œ 5 SCREWS MAIN PCB ˇ Power Key PCB Fig 4 4 Main PCB Removal 4 1 4 Main PCB Removal 1 Remove 5 Screws Œ 2 Lift up the Main PCB and Power Key PCB ˇ ...

Page 29: ...and Reaasembly Samsung Electronics 4 5 4 2 Deck 4 2 1 Holder Chuck Removal 1 Push 4 Hooks Œ in the direction of arrow A and lift up the Holder Chuck Fig 4 5 Holder Chuck Removal HOLDER CHUCK Œ 2 HOOKS Œ 2 HOOKS A A ...

Page 30: ...val 1 Insert a Screw Driver Œ into Emergency Hole and push the Slider Housing ˇ in the direction arrow A 2 When the Tray Disc comes out a little pull it in the direction arrow B by hand Fig 4 6 Tray Disc Removal B ˇ SLIDER HOUSING TRAY DISC A Œ SCREW DRIVER EMERGENCY HOLE ...

Page 31: ... 3 Assy P U Deck Removal 1 Remove the 4 Soldering Œ SL SL SP SP 2 Remove the 1 Screw and lift up the Ass y P U Deck ˇ Fig 4 7 Assy P U Deck Removal 1 SCREW ˇ ASS Y P U DECK CHASSIS SUB Œ 4 SOLDERING Assembly Point SL BLK SP BLK TM BLK TM BLK SL RED SP RED ...

Page 32: ...the direction arrow B 4 Push the 1 Hook ˆ in the direction of arrow C and lift up the Slider Housing 5 Remove the Belt Pulley Ø and 2 Screws Ass y Motor Load 6 Push the 1 Hook in the direction of arrow D and lift up the Gear Pulley Gear Tray Ô Fig 4 8 Ass y Housing Removal B D A A C SLIDER HOUSING ˇ ASS Y PCB DECK Œ 2 SOLDERING 2 SCREWS Ø BELT PULLEY Ô GEAR TRAY GEAR PULLEY 1 HOOK ˆ 1 HOOK ASS Y M...

Page 33: ...ews ˆ and lift up Motor Feed Ass y Ø 4 Remove the 2 Screws and lift down Motor Spindl Ass y 5 Remove the 3 Screws and remove 3 Holder Cam Skew Shaft Pick Up Ô Ass y Pick Up 6 Remove the 1 Screws Ú and remove Gear Back Lash Æ Fig 4 9 Ass y Bracket Deck Removal GEAR FEED B GEAR FEED A ˆ 2 SCREWS Ø MOTOR FEED ASS Y Ú 2 SCREWS 2 SCREWS MOTOR SPINDLE CHASSIS SUB 3 HOLDER CAM SKEW 3 SCREWS Ô SHAFT PICK ...

Page 34: ...4 10 Samsung Electronics Disassembly and Reaasembly MEMO ...

Page 35: ...7 28 output are normal Check open state from FIC1 to pick up Check RIC1 and A B C D input Check FIC1 Yes Yes No No A FE Waveform No pick up home positing ZIC1 191 SLED PWM output is normal 1 7V 1 8V Check the Sled Motor and connection Check ZIC1 Yes No SLED SLED FIC1 13 14 output are normal Check FIC1 Yes No ...

Page 36: ... difference into 10ohm B No Search Operation MIRR RIC1 27 output is normal Actual velocity occurs at ZIC1 191 terminal Actual velocity occurs at FIC1 13 14 terminal Check RIC1 peripheral circuit MEVO RIC1 32 output level is normal Check ZIC1 peripheral circuit Check FIC1 peripheral circuit No No No No Yes TE occurs in search range Focus On Yes Yes Yes A See Fine Seek Check No Yes Check pick up No ...

Page 37: ...pick up Check Deck Check RIC1 6 terminal Check FIC1 peripheral circuit Yes Yes Yes Yes Yes Yes No No No No No No TE Waveform TRD Waveform T T Waveform Abnormal rotation of disc motor Input of RF SUM signal is normal ZIC1 172 173 SPD output is normal ZIC1 189 Check ZIC1 peripheral circuit FIC1 25 output is normal FIC1 23 signal MON is H Check or replace disc motor Check ZIC1 Check FIC1 soldering an...

Page 38: ... perpheral circuit Yes Yes No No OPEN CLOSE Waveform CD VCD DVD L R output error Mixed Audio output Normal DATA 0 is input in AIC1 2 Analog output of AIC1 7 9 Vout is normal Check JACK1 peripheral soldering shot Check ZIC1 113 output Check ZIC1 118 DVD 12 2884MHz Yes Yes No No AIC5 1 7 output is normal Check AIC5 peripheral circuit Yes No Base terminal level of AQ7 AQ9 are L Check FMIC 11 mute Yes...

Page 39: ...ung Electronics 5 5 S Video output error Video output of display setup is S VIDEO Select video output to S VIDEO No Yes C Y Pr Pb output error Video output of display setup is I SCAN Select video output to I SCAN No Yes C ...

Page 40: ...nd pin4 in PIC1 Check ZY1 Check the soldering of ZIC1 No No Yes No Yes Analog signals are inputted normally VIC1 4 Yes No Power is normal at VIC1 1 28 Yes No Yes C Check the connection between pin158 in ZIC1 and VIC1 Check the connection between VIC1 1 and VL6 Yes Yes Yes Check the connection between VL6 and pin 1in VIC1 No Check the soldering of VIC1 No Check the connection between VIC1 and outpu...

Page 41: ...6 peripheral circuit Check HIC1 peripheral circuit No No Yes No Check ZIC1 and peripheral circuit Yes Check I2C communication at Power On Off Yes No Check the output 3 3V and 1 8V Check HIC1 peripheral circuit Yes No Yes VCKL Waveform No Power Standby LED OFF PFD01 error PDS01 voltage is normal voltage Replace fuse Check PDS01 04 No Yes Switching operation of PIC01 is normal No Replace PIC01 Yes R...

Page 42: ...Troubleshooting 5 8 Samsung Electronics Video output of display setup is SCART Select video output to SCART No Yes C Scart output Error ...

Page 43: ...Samsung Electronics 6 1 6 Exploded View and Parts List 6 1 Cabinet Assembly 6 2 6 2 DVD Mechanical Parts 6 4 ...

Page 44: ...Exploded View and Parts List 6 2 Samsung Electronics 6 1 Cabinet Assembly W275 P025 W275 W272 C001 A001 W272 C002 W004 P005 P001 P006 C015 ...

Page 45: ...IN ABS 94 HB T C015 AK97 01262A ASSY CABINET TOP PCM T0 55 DVD HD850 XAA P001 AK92 00596A ASSY PCB MAIN DVD HD850 MAIN PCB ASSY P005 AK92 00597A ASSY PCB FRONT KEY DVD HD850 ASSY PCB FR P006 AK92 00597B ASSY PCB POWER KEY DVD HD850 ASSY PCB PO P025 AC39 10200N CBF POWER CORD AT US EP2 Y HOUSING 2P 1 W004 6003 000283 SCREW TAPTITE BH B M3 L8 ZPC YEL SWRC W272 6003 001464 SCREW TAPTITE BH B M3 L10 Z...

Page 46: ...ded View and Parts List 6 4 Samsung Electronics 6 2 DVD Mechanical Parts W212 H213 H212 H102 H214 H210 W010 H202 H204 W274 W274 H203 H205 H207 H103 W011 H106 H107 W273 H211 H206 W012 H241 H105 H108 H104 H109 ...

Page 47: ...4 AK66 00043A GEAR FEED A DP 15 POM H205 AK66 00044A GEAR FEED B DP 15 POM H206 AK61 00363A HOLDER CAM SKEW DP 16 POM BLK H207 AK31 00017A MOTOR DC SPINDLE RF300FA 12350 DP 17 H210 AK31 00005A MOTOR FEED ASSY DP 9 H211 AK97 01009B ASSY PICK UP DP 16 MITSUMI VE H212 AK61 00359A HOLDER CHUCK DP 16 POM T3 W140 L96 BLK H213 AK61 00357A SPRING ETC CLAMPER SUS304CSP H214 AK66 00057A GEAR BACKLASH DP 16 ...

Page 48: ...Exploded View and Parts List 6 6 Samsung Electronics MEMO ...

Page 49: ...7 000070 R CHIP 0ohm 5 1 10W TP 1608 DC14 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 DCN1 3708 000491 CONNECTOR FPC FFC PIC 23P 1mm STRAIGHT S DCN2 3708 001266 CONNECTOR FPC FFC PIC 11P 1MM STRAIGHT S DOC4 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 DOE1 2401 000598 C AL 1uF 20 50V GP TP 4x7 5 DOIC1 AH14 10004R IC M74HCU04 SOP TAPE 14P DOIC2 3707 001060 CONNECTOR OPTICAL PLUG GP1FA550TZ 6...

Page 50: ...203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 HC8 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 HC9 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 HDMI 3701 001313 CONNECTOR HDMI 19P 2R PLUG ANGLE AU 30U HIC1 1204 002313 IC VIDEO PROCESS ZR36721 PQFP 80P 14x20m HL18 2703 000398 INDUCTOR SMD 10uH 10 3225 HL19 2703 000398 INDUCTOR SMD 10uH 10 3225 HL20 2703 000398 INDUCTOR SMD 10uH 10 3225 HL21 ...

Page 51: ... S PQL58 0501 000303 TR SMALL SIGNAL KSA733 PNP 250mW TO 92 T PR1 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 PRC62 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 PRD31 2007 000122 R CHIP 1 2Kohm 5 1 10W TP 1608 PRD32 2007 000075 R CHIP 220ohm 5 1 10W TP 1608 PRF01 2002 000121 R COMPOSITION 1Mohm 10 1 2W AA TP 3 5x9 PRF10 2006 000262 R CEMENT 2 7ohm 10 2W CB TP 7 5x11x20 PRF11 2001 000527 R CARBON 22...

Page 52: ... C0G TP 1608 ZC11 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 ZC12 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 ZC13 2007 000075 R CHIP 220ohm 5 1 10W TP 1608 ZC14 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 ZC15 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 ZC16 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 ZC17 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 ZC18 2203 000815 C CER...

Page 53: ...1 10W TP 1608 ZR67 2007 000113 R CHIP 33ohm 5 1 10W TP 1608 ZR7 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 ZR70 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 ZR71 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 ZR76 2007 000084 R CHIP 4 7Kohm 5 1 10W TP 1608 ZR77 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 ZR78 2007 001164 R CHIP 75ohm 1 1 10W TP 1608 ZR8 3301 001309 BEAD SMD 47OHM 1608 500 TP 0 3 ZR85 2007 000329 R C...

Page 54: ...7 6 Samsung Electronics Electrical Parts List This Document can not be used without Samsung s authorization MEMO ...

Page 55: ...VBS Pb Pr Y Lt Rt AIC2 Audio DAC PCM 1753 FMIC1 Front Controller GMS81C2020 Key Control LPF AMP LPF AMP VIC1 LA73054 DVIC1 HDMI SLI9190 Optical MODE S W Channels C Channels 0 1 2 Disc Motor Actuator RIC1 R F IC ZR3723D ZIC3 2M FLASH MEMORY VFD VFD1 DISPLAY HNV 08SS42 ITU R656 8bit27M Post Filter Post Filter Post Filter Post Filter S W 6dB amp This Document can not be used without Samsung s authori...

Page 56: ...Block Diagram 8 2 MEMO ...

Page 57: ...9 1 9 Wiring Diagram Samsung Electronics ...

Page 58: ...Wiring Diagram 9 2 MEMO ...

Page 59: ...10 1 10 PCB Diagrams 10 1 Main PCB 10 2 Key PCB 10 2 10 4 ...

Page 60: ...PCB Diagrams 10 2 10 1 Main PCB COMPONENT SIDE ...

Page 61: ...PCB Diagrams 10 3 CONDUCTOR SIDE ...

Page 62: ...PCB Diagrams 10 4 10 2 Key PCB ...

Page 63: ...atically sensitive and therefore require the special handling techniques described under the electrostatically sensitive ES devices section of this service manual Note Do not use the part number shown on this drawing for ordering The correct part number is shown in the parts list may be slightly different or amended since this drawing was prepared Important safety notices Components identified wit...

Page 64: ...Schematic Diagrams This Document can not be used without Samsung s authorization Samsung Electronics 11 2 11 1 Power Drive ...

Page 65: ...ment can not be used without Samsung s authorization Samsung Electronics F M Deloder SSC MRST SCLK Waveform These are the waveforms of DVD HD850 Caution There can be some differences Voltage Frequency etc among cameras 11 2 Fromt Micom ...

Page 66: ...zation Samsung Electronics 11 4 F M Deloder SSC MRST Analog Video Data Digital Video Data I2C Audio Data Ø ØGCLK 27MHz Waveform These are the waveforms of DVD HD850 Caution There can be some differences Voltage Frequency etc among cameras PCLK 135MHz Waveform 11 3 AV Decoder ...

Page 67: ...Schematic Diagrams 11 5 This Document can not be used without Samsung s authorization Samsung Electronics MRST Analog Video Data Digital Video Data I2C Audio Data 11 4 HDMI ...

Page 68: ...Schematic Diagrams This Document can not be used without Samsung s authorization Samsung Electronics 11 6 11 5 Servo ...

Page 69: ...cument can not be used without Samsung s authorization Samsung Electronics Analog Video Data ÚADATA0 Waveform These are the waveforms of DVD HD850 Caution There can be some differences Voltage Frequency etc among cameras Ú 11 6 Video ...

Page 70: ...Schematic Diagrams This Document can not be used without Samsung s authorization Samsung Electronics 11 8 Audio Data 11 7 Audio ...

Page 71: ... a Linear Vreg Vin Vs Ns Vp Np REGULATOR Common power Ex 120V 60Hz Fig 13 1 Linear Power Supply Waveform Description Vp t 0 Fig 13 2 Vs t 0 Fig 13 3 Vout t 0 Fig 13 4 Input Common power to transformer Vp The output Vs of transformer is determined by the ratio of 1st Np and 2nd Ns Vs Ns Np x Vp Vout is output DC by diode and condensor ...

Page 72: ...loss is caused by margin design Greater core size and condensor capacity are ne eded because the transformer works on a single power frequency 13 1 1 b S M P S Pulse Width Modulation v Vreg Vout 0 t Change by common power Regulator loss Fig 13 5 Terms 1 1st Common power input to 1st winding 2 2nd Circuit followings output winding of transformer 3 f Frequency Switching frequency T Switching cycle 4...

Page 73: ...ff Suppress noise High inverted power occurs at switch PQR11 off because of the 1st winding of transformer V L1 xdi dt L1 Leakage Induction A very high residual voltage exist on both terminals of PICF1 4 5 8pin because dt is a very short 2 SNUBBER circuit protects PQR11 from damage through leakage voltage suppression by RC Charges the leakage voltage to PDS11 PER13 PCD12 and discharges to PRS11 PR...

Page 74: ...scriptions 13 4 Samsung Electronics GND PICF1 Icease R C R FB C Softs POWER CTL Mos Fet Drain VCC Ib R D C Ig R Vin Snubber NP Ig VB VB PTDI Ns Vs I2 PDS34 PES34 Vout GND Ib Vb I2 I1 VD G 0 Off ON Fig 13 8 Driving Circuit ...

Page 75: ...PICS2 A K BASE Current decrease PICS2 A K Current decrease PICS1 DIODE Current decrease PICS1 C E Current decrease PICS1 C E Voltage increase PICS1 F B Voltage increase OUT DUTY increase TRANS Primary Cuttent Increase TRANS Primary Power increase Vout increase Vout maintain 4 4V PRD31 PRD32 Reduce 4 4V overshoot PRS32 PCS32 Prevent PICS2 oscillation for phase correction 13 1 2 d Feedback Control C...

Page 76: ...d Circuit Line Filter Power IN AC85V 240V Noise Removal SNUBBER PWM IC Control Circuit Converter Feed Back Circuit 3 3V Rectified Smoothing Circuit 5V Rectified Smoothing Circuit 8V Rectified Smoothing Circuit 3 3V Rectified VoltageCircuit 5V Rectified VoltageCircuit x2 Motor 8V 1 Port 12V Rectified VoltageCircuit O U T P U T Fig 13 10 ...

Page 77: ...on 3 beam tracking error signal generation DPD 1 beam tracking error defect MIRR output Laser Power Control etc 13 2 1 a Basic Potentiometer SP3723 Uses 3 5V to 5 5V and reference voltage is 1 65V 13 2 1 b RF signal Fig 13 11 shows the flow of signal generated by the pick up RF signal detected from pick up is converted in to RF signal via RF interface and attennuators A B C D signals detected from...

Page 78: ...ronics RF FROM P U RFAC RFSIN 102 103 103 RF EQ SIGR ATOP ATON AIN AIP FCCR CAR K J j H h G Fig 13 12 Fig 13 12 shows the waveform equalizing block diagram for the RF signal RF signal from the pick up is the input of RF equalizer module of RIC1 SP3723 ...

Page 79: ... ZIC2 for temporary data read and write The Micom ZIC1 Vaddis 7 mounted in main board analizes the key commands of front panel or instructions of remote control and controls the devices on board to execute the corresponding commands after initializing the devices connected with micom on board at power on 13 3 2 Block Diagram RIC1 RF AMP SP3723 AIC1 D A CONVERTER DSD1608 ZIC1 MPEG DECODER CPU VADDI...

Page 80: ...Tracking SERVO Make the object lens follow the disc track in use of tracking error signal created from Pick up 3 SLED Linked SERVO When the tracking actuator inclines outwardly as the object lens follows the track during play the SLED motor moves slightly and counteracts the incline 4 CLV SERVO DISC Motor Control SERVO Controls the disc motor to maintain a constant linear velocity necessary for RF...

Page 81: ...DVD Fig 13 15 Vref Vref 1 5V Pin 167 of ZIC1 FOD Pin 181 of ZIC1 FE Pin 183 of ZIC1 AAF_PZ 2 PLAY When focus loop closes the loop during focus servo on both are controlled by VREF voltage approx 1 65V 2 TRACKING SERVO 1 NORMAL PLAY MODE Œ For DVD Composite The signal output from PD A B C D of Pick up the tracking error signal pin39 of RIC1 uses the phase difference of A C and B D in RIC1 and input...

Page 82: ... SLED LINKED SERVO Normal play mode Move SLED motor slightly by means of PWM signal in ZIC1 pin 191 as the tracking actuator moves along with track during play Control to move the entire Pick up as the tracking actuator moves Coarse serach mode In case of long distance search such as chapter serach ZIC1 uses MIRR and Global sense signal Then read ID and compute the existing track count after input...

Page 83: ...ayback and signal process is faster than Read of A V decoder When the memory is filled this status is report ed by interrupt to main micom which controls the servo to kick back the pick up to the previous track after mem orizing the last data read from disc until now It takes some times to jump to the previous track and return to the original jump location again The memory will have an empty space...

Page 84: ...eo signal and control the output timing of 8bit video signal The separate signal is encoded to NTSC by control of ZIC1 The above signals which are CVBS Composite Video Burst Synchronized G GREEN Y Y S_VIDEO R RED Pr and C S_VIDEO B BLUE Pb PIN162 are selectively outputted CVBS S_VIDEO RGB Component by the rear switch In Course of encoding 8bit data can extend to 10bit or more To convert the extend...

Page 85: ...tputted via post filter and amplifier CD and VCD are outputted with only 2 channels audio data and transmit them to Data 0 If DVD of multichannel Source disc if is downmixed and transmit them to Data0 If you want to listen to the multichannel output you have to connect digital output with AC 3 amp or MPEG DTS amp AIC1 PCM1753 D A CONVERTER POST FILTER POST FILTER AMP AMP ZIC1 Vaddis 7 A V Decoder ...

Page 86: ...Circuit Operating Descriptions 13 16 Samsung Electronics MEMO ...

Page 87: ...tellite and terrestrial broa dcasts movies DVDs Digital displays Plasma LCD DLP LCOS Digital interactivity PVRs MHP OCAP But Devices Still Have Analog Interfaces RF Composite S Video Component 1950 1960 1970 1980 1990 2000 Digital Digital HDMI Retail Training Program Part 1 Overview HDMI The Standard for Connecting HDTV 14 1 Adout HDMI ...

Page 88: ...t quality source to display transfer Larger DTV screens with higher resolution Market sweet spot is 35 36 inch TVs growing L arger screens show off superior HD quality Digital interfaces preserve the original quality at the display Reduce complexity of home theater wiring To improve an alog audio video qu ality 11 cables are used Digital interfaces can use a single cable for high quality A V Need ...

Page 89: ... as it was meant to be seen and heard Only one cable required All your HD video and audio in one cable Replace up to 8 audio and 5 video cables HDMI High Definition Multimedia Interface The first and only digital interface for Consumer Electronics that can carry Uncompressed high definition video Comp ressed or uncompressed multi channel audio Intelligent format command data ...

Page 90: ...x AV Receiver AFTER Equivalent functions Higher performance 100 Pure Digital Video and Audio signal remains digital from output device to display device Best quality sound and picture Band width to spare for HDTV 1080p capable and beyond Over two times 1080i bandwidth Includes YUV color space support ...

Page 91: ... from sources DVD Widescreen Format 16 9 Display w no Intelligence 16 9 Display with Intelligence Advanced Control Entire home theater controlled from a single remote Automatic Format Adjustment TV AV Receivers can adjust without consumer intervention PC Compatibility Devices can playback display PC media No te Availability of these HDMI features depends on whether the manufacturer has implemented...

Page 92: ... 11 3 9 1 Length 3 5 m 10 15 m 10 15 m Digital Video 8 bit RGB 9 9 8 bit YUV 9 10 12 bit YUV 9 Digital Audio Compressed 9 Uncompr essed 9 Control CE Control 9 PC Compatibility DVI Electrical 9 9 Content Protection HDCP 9 9 The CE Industry Has Endorsed HDMI As The HD Connection Standard Over 100 adopters of HDMI sofar ...

Page 93: ...Reference Information Samsung Electronics 14 7 HDMI The HD Connection Standard All Digital Single Cable ...

Page 94: ...Reference Information 14 8 Samsung Electronics MEMO ...

Search results

Summary of Contents for DVD-HD850/XAA

Reviews:

Samsung DVD-HD850/XAA, Service Manual, Page: 78 / 94

Search results

Summary of Contents for DVD-HD850/XAA

Reviews: