Hitachi DVC-605U Service Manual Download Page 72 | Manualshive

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Circuit Descriptions

5-13

(2) SEARCH Mode :

Search mode : Fine seek,(Moving the tracking actuator slightly little below 255 track) and coarse search, moving
much in use of sled motor. The coarse search will be described in sled linked servo and now, the fine seek is
explained shortly.
If the object lens is located near target, cut off the tracking loop and give the control signal as many as desired
count to move the tracking actuator via SIC1 pin 76 terminal(TRD).

3) SLED LINKED SERVO

•

Normal play mode

Move SLED motor slightly by means of PWM signal in SIC1 pin 73, 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), SIC1 uses MIRR and TZC signal of SIC1-38, 52.

Then, read ID and compute the existing track count after input of next

track. If the existing track count is within fine seek range, tracking begins using fine seek.

4) CLV SERVO(DISC MOTOR CONTROL SERVO)

Input RF signal (from Pick-up) to SIC1 pin59. Detect SYNC signal from RF in SIC1, and output PWM signal to
SIC1 pin 55 for constant linear velocity.

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Summary of Contents for DVC-605U

Page 1: ...sion Tokai DV C605U 1 Precautions 2 Reference Information 3 Product Specifications and Operating Instructions 4 Disassembly and Reassembly 5 Circuit Descriptions 6 Troubleshooting 7 Exploded Views 8 Replacement Parts List 9 Block Diagrams 10 PCB Diagrams 11 Wiring Diagram 12 Schematic Diagram CONTENTS Part number for Pickup Assy added 6 21 01 ...

Page 2: ...ratories 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 screwheads metallic overlays control shafts etc especially any exposed metal parts that offer an electrical return path to the chassis Any curre...

Page 3: ...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 necessary take ...

Page 4: ...last 2 The service precautions are indicated or printed on the cabinet chassis or components When servicing follow the printed or indicated service precautions 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 i entified by shading by or by in the circuit ...

Page 5: ... the assembly 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 sufficient 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 replacement...

Page 6: ...s 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 which is in ...

Page 7: ...PCB DCN1 See Fig 1 4 3 Disassemble the Deck 4 Disassemble the Deck PCB 1 5 2 Assembly 1 Replace the Pick up 2 Assemble the Deck PCB 3 Reassemble the Deck 4 Insert Flat Cable into Main PCB DCN1 and switch SW5 on Deck PCB to ON See Fig 1 4 FLAT CABLE TO MAIN PCB DCN1 SW5 OFF ON Note If the assembly and disassembly are not done in correct sequence the Pick up may be damaged Fig 1 4 ...

Page 8: ...put for the Serial Control Mode Chip select is active when SMUTE is low 9 DFS I Double Sampling Speed Input When low this pin defines the Normal Speed Mode and 128 xFs oversampling is implemented When high the DFSpin defines the Double Speed Mode implemented with 64 x Fs oversampling This pin features an internal pull down 10 DEM0 or CCLK I De emphasis Enable 0 or Control Data Clock Input If the P...

Page 9: ...ATA 3 _OUT C2PO SDATA 4 _OUT S Q DT SDATA 5 _OUT W FSY SDATA 6 _OUT S 0 S1 SDATA 7 _BI SQ CK DATREQ _ IN CSTROB E _ OUT DTER_OUT DATACK_OUT TOS _ OUT Mon i tor 9 GFS_OUT FRSY Z_ OUT TX_OUT EFM O_ OUT W FCK_ OUT RFCK_ OUT CK1 6M_OUT DEMPHA_ OUT CLVLOCK_ OUT ECSY CD CLV CAV 23BIT SR Frame Sync DET PROT INS 7 35k Hz VCO Tim ing Generator M M W FCK 17 58 7 3 5k Hz 32 28 5 28 24 5 CIRC EFM DEMOD SUBCOD...

Page 10: ... GND 0 V 85 DVDD DIGITAL Power 5 V 86 DVDD DIGITAL Power 5 V 87 DVSS Digital GND 0 V 88 DVSS Digital GND 0 V 89 DVSS Digital GND 0 V 90 DVSS Digital GND 0 V 91 FRSYZ_OUT Frame Sync Out O Monitor 92 TX_OUT Digital Out O Monitor No Pin Name Description I O 46 DADR7_OUT DRAM Address Bus O DRAM 47 DVSS Digital GND 0 V 48 DADR0_OUT DRAM Address Bus O DRAM 49 DADR6_OUT DRAM Address Bus O DRAM 50 DADR1_O...

Page 11: ...D8 RAS NO 2 CLOCK GENERATOR CONTROL LOGIC COLUMN DECODER SENSE AMPLIFIERS VO GATING ROW DECODER 512x512x16 MEMORY ARRAY 512 512 DATA IN BUFFER DATA OUT BUFFER REFRESH CONTROLLER REFRESH COUNTER NO 1CLOCK GENERATOR ROW ADDRESS BUFFERS 9 COLUMN ADDRESS BUFFER OE Vcc Vss IO0 IO15 16 9 8 8 9 9 9 9 16 512x16 ...

Page 12: ...ess Strobe 28 CASH Input Column Address Strobe Upper Byte Control 29 CASL Input Column Address Strobe Lower Byte Control 13 WE Input Write Enable 27 OE Input Output Enable 2 5 7 10 31 34 36 39 I O0 I O15 Input Output Data Input Output 1 6 20 Vcc Supply Power 5V 21 35 40 Vss Ground Ground 11 12 15 30 NC No Connect ...

Page 13: ...R TIMER 6 8BIT TIMER TIMER 7 Not included in TMP95C265 64KB ROM 2KB ROM WATCHDOG TIMER PC SR XWA XBC XDE XHL XIX XIY XIZ XSP W 900 H CPU A B C D E H IX OSC PORT0 PORT1 PORT2 PORT3 PORT4 PORT5 CS WAIT CONTROLLER 4 BLOCK INTERRUPT CONTROLLER 16BIT TIMER TIMER 8 16BIT TIMER TIMER 9 IY IZ SP L 32bit F VCC 3 VSS 3 X1 X2 P00 P07 D0 D7 P10 P17 D8 D15 P20 P27 A15 A23 P30 P37 A8 A15 P40 P47 A0 A7 WAIT P55 ...

Page 14: ...or from DSP I KS1453 108 98 PA6 FOKB Focus lock monitor from RF I KS1461 48 99 PA7 RFO RF sum signal Analog Lnput I RFO 100 VREFH 5D A D Ref Input H I 5D NO PORT NAME ASSIGNED NAME DESCRIPTION TYPE REMARK 1 VREFL DGND A D Ref Input L I DGND 2 AVss DGND A D Ref Input DGND 3 AVcc 5D A D VCC Input 5D 4 DAOUT0 MTP1 0 NC 5 DAOUT1 MPT2 0 NC 6 NMI PULL UP I 7 P53 CSB D Servo IC Chip Select 0 KS1452 10 8 ...

Page 15: ...0 11 12 13 14 15 16 A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 Q0 Q1 Q2 Vss Vcc A17 A14 A13 A8 A9 A11 GVPP A10 E Q7 Q6 Q4 Q4 Q3 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 TOP VIEW Vcc Vss LOGIC DIAGRAM FUNCTION Address Inputs Chip Enable Data Outputs Output Enable Program Supply Supply Voltage Ground A19 A18 GVpp E A0 A19 A0 Q7 20 8 ...

Page 16: ...8 A9 A11 OE A10 CS I O8 I O7 I O6 I O5 I O4 A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 I O1 I O2 I O3 VSS A0 CS A14 WE I O1 I O8 OE VDD VSS DATA I O DECODER CONTROL CORE ARRAY SYMBOL DESCRIPTION A0 A14 Address Inputs I O1 I O8 Data Inputs Outputs CS Chip Select Input WE Write Enable Input OE Output Enable Input V DD Power Supply V SS Ground TOP VIEW BLOCK DIAGRAM ...

Page 17: ...PC ACC Bus Interface Base Timer SIO 0 SIO 1 Timer 0 Timer 1 VFD Controller ADC INT0 3 Noise Filter Real Time Service XRAM 128 bytes High Voltage Output Port 1 Port 7 Port 8 Port 2 Port 3 Port 4 Port 5 PWM 1 B Reg PSW RAR RAM Stack Pointer PORT 0 Watch Dog Timer C Reg ALU ROM IR PLA RC Clock Generator X tal ...

Page 18: ... P46 O DS Disc Sensor Toggle LED 98 P47 O JOG LED JOG SHUTTLE 99 P50 O LED STANDBY LED LED 100 P51 O ON OFF POWER ON OFF CONTROL POWER NO PORT NAME TYPE ASSIGNED NAME DESCRIPTION REMARK 1 P52 O MRST Front end reset RESET 2 PWM1 TP NC 3 P20 O LOAD LED Load LED AK4393 4 P21 O CS1 Chip Select 1 AK4393 5 P22 O CCLK Control Data Clock AK4393 AK4356 6 P23 O CDTI Control Data AK4393 AK4356 7 P24 O CS2 Ch...

Page 19: ...TH EQF RDPF VZOCTL AGCC RFCT EQGND CP1 MIRRI RFRPN CP2 CB2 RFRP AGCP AGCB CB1 MROFST EQIN RREFDLY VREF GENERATOR RREFBF RREF RREFEQ EQ VC AMP 58 60 59 57 65 62 63 61 64 68 67 66 69 S I F BLO C K CD1 S12 DVD1 DVD2 LDONB FLT_CTL CDRSEL TESEL AGCHOLD TBAL GAIN_TE3 ENV_SEL DVCTL_SEL DPD_MUTE GAIN_EQ GAIN_FE GAIN_ABCD TE_OFST FE_OFST ABCD_OFST DELAY_CD DELAY_AB PDLIM IT ga_RFSUM HOLD_CTL ga_PLLDP ga_PL...

Page 20: ...Focus OK comparator output terminal L Focus OK FOKB DSSP 47 DFCT_CP1 Connection terminal for RC value of Peak Hold for selecting the maximum time for Servo signal DFCT 48 DFCT_CP2 Connection terminal for RC value of Peak Hold for selecting the minimum defect time for PLL DFCT 49 CC1 O Peak Hold Output terminal for selecting the minimum Defect time for Defect DFCT 50 CC2 I Peak Hold AC Coupling Inp...

Page 21: ...TOP PS0 PS1 LOCK SMON MIRR FOKB DFCT I O IN TER FACE BLOC K D AB C SB M D ATA 7 0 M W R B SEN SE SYSC ON IN TER FACE BLOC K R OM D SP C OR E F OR D IGIT AL SER VO PL CK R VC O VC TR L EQC TL W ID E C APTU RE R ANGE PLL L D ON B PSB RSTB TEST TZCA M R D B EF M ASYMM ETR Y R FI ASY C D XOUT TILTI TILTO EFM EFM R TD R PD PL LLOC K M D OU T 3 0 DIRC ASY D VD EFM I D VC TL M AG I C 0 IN T0_224 PL LHD R...

Page 22: ... zero cross input pin 78 MDOUT0 O Mode data0 out controlled by micom 79 MDOUT1 O Mode data1 out controlled by micom 80 MDOUT2 O Mode data2 out controlled by micom No Name I O Description 1 MDOUT3 O Mode data3 out controlled by micom 2 SSTOP PS0PS1 I Limit switch sled position sensor input pin0 3 PS1 I Sled motor position sensor input pin1 4 TEST I Test pin L normal H test 5 COUT O Counter clock 6 ...

Page 23: ... Values TSD Detector Direction Detector Hall amp matrix Direction select Power Save Short vrake Lower Distributor Upper Distributor MUTE MUTE MUTE 2P 2P 2P 2P 2P 2P 2P 2P 2P 10k 10k 10k 10k PWRGND A3 A2 A1 OPIN OPIN OPOUT VCC1 AVM12 DI4 DI3 DI2 FIN GND FIN GND H3 H3 H2 H2 H1 H1 BTLSGND BIAS AVM4 MUTE12 MUTE3 MUTE4 DI1 DO1 DO1 DO2 DO2 BTLPGND1 BTLPGND2 DO3 DO3 AVM3 DO4 DO4 FIN GND SB DIR SS CS1 VM ...

Page 24: ...L CH 1 2 MOTOR SUPPLY VOLTAGE 22 DI4 I BTL DRIVE INPUT 4 23 DI3 I BTL DRIVE INPUT 3 24 DI2 I BTL DRIVE INPUT 2 25 DI1 I BTL DRIVE INPUT 1 26 DO1 O BTL DRIVE 1 OUTPUT 27 DO1 O BTL DRIVE 1 OUTPUT 28 DO2 O BTL DRIVE 2 OUTPUT 29 DO2 O BTL DRIVE 2 OUTPUT 30 BTLPGND1 BTL POWER GROUND 1 31 BTLPGND2 BTL POWER GROUND 2 32 DO3 O BTL DRIVE 3 OUTPUT 33 DO3 O BTL DRIVE 3 OUTPUT 34 AVM3 BTL CH3 MOTOR SUPPLY VOL...

Page 25: ...am Stream Decoder Host Interface Audio Interface DVD CD Interface MPEG Video Decoder Subpicture Decoder OSD Decoder CD DA and LPCM Decoder Dolby Digital Audio Decoder MPEG Audio Decoder Memory Controller Host Interface Control Logic SecureView CSS Descrambling Bus Key Authentication optional Video Mixer Video Out Digital Video Encoder ...

Page 26: ...O 100 VDD_3 3 3 3V 101 VSS GROUND 102 MADDR1 3 3V O 103 MADDR2 3 3V O 104 MADDR3 3 3V O 105 RESERVED ANALOG GND 106 NC No connect O 107 NC No connect O 108 RESERVED 3 3V I 109 NC No connect O 110 RESERVED 3 3V I 111 RESERVED 3 3V ANALOG 112 RESERVED 3 3V I 113 DAI LRCK 3 3V I O 114 DAI BCK 3 3V I O 115 VDD_3 3 3 3V 116 VSS GROUND 117 DAI DATA 3 3V I O 118 DA DATA3 3 3V O 119 DA DATA2 3 3V O 120 DA...

Page 27: ...V I 196 RESERVED 3 3V I 197 HDATA7 3 3V I O 198 VSS GROUND Pin No Pin Name I O Voltage I O Type 199 HDATA6 3 3V I O 200 HDATA5 3 3V I O 201 HDATA4 3 3V I O 202 HDATA3 3 3V I O 203 HDATA2 3 3V I O 204 VDD_3 3 3 3V 205 VSS 3 3V 206 HDATA1 3 3V I O 207 HDATA0 3 3V I O 208 CS 3 3V I Pin No Pin Name I O Voltage I O Type ...

Page 28: ...uld be enabled at least one cycle prior to new command Disable input buffers for power down in standby A0 A10 AP Address Row column addresses are multiplexed on the same pins Row address RA0 RA10 column address CA0 CA7 BA Bank Select Address Selects bank to be activated during row address latch time Selects bank for read write during column address latch time RAS Row Address Strobe Latches row add...

Page 29: ...6 MCLK LRCK BICK MCKO LRCK BICK XTI XTO Controller CS CCLK CDTI LRCK BICK SDOUT1 SDOUT2 SDOUT3 AC3 SDTI1 SDTI2 SDTI3 LOUT1 ROUT1 1 LOUT1 44 2 DZFL2 3 DZFR1 4 DZFL1 5 CAD0 6 CAD1 7 PDN 8 BICK 9 MCLK 10 DVDD 11 ROUT1 43 LOUT2 42 LOUT2 41 ROUT2 40 ROUT2 39 LOUT3 38 LOUT3 37 ROUT3 36 ROUT3 35 AVSS 34 DVSS 12 SDTI1 13 SDTI2 14 SDTI3 15 LRCK 16 SMUTE 17 CCLK 18 CDTI 19 CSN 20 DFS0 21 CKS0 22 33 32 31 30...

Page 30: ...ta Input Pin 20 CSN I Chip Select Pin This pin should be held to H except for access 21 DFS0 I Double Speed Sampling Mode 0 Pin Note L Normal Speed H Double Speed at DFS1 bit 0 22 CKS0 I Input Clock Select 0 Pin Note 23 CKS1 I Input Clock Select 1 Pin Note 24 CKS2 I Input Clock Select 2 Pin Note 25 DIF0 I Audio Data Interface Format 0 Pin Note 26 DIF1 I Audio Data Interface Format 1 Pin Note 27 DI...

Page 31: ... VO2 PIN CONFIGURATIONS PIN DESCRIPTION Pin No Symbol I O Description Pin No Symbol I O Description 1 GND Ground 6 VIN2 I Input 2 2 VO1 O Output 1 7 SVCC Supply voltage Signal 3 VZ1 Phase compensation 8 PVCC Supply voltage Power 4 VCTL I Motor speed control 9 VZ2 Phase compensation 5 FIN1 I Input 1 10 VO2 O Output 2 1 2 3 4 5 6 7 8 9 10 GND VO1 VZ1 VCTL VIN1 VIN2 SVCC VO2 PVCC VZ2 KA3082 ...

Page 32: ... CD 8cm Reading Speed 1 2to 1 4 m s Compact Disc Maximum Play Time 20min VCD 12cm Reading Speed 1 2 to 1 4 m s Maximum Play Time 74min Video Audio Composite Video 2 channel 1 0Vp p 75ohm load Y 1 0Vp p 75ohm load Video Output Component Video Pr 0 70Vp p 75ohm load Pb 0 70Vp p 75ohm load S Video Luminance Signal 1Vp p 75ohm load Chrominance Signal 0 286Vp p 75ohm load 2 Channel L 1 L R 2 R 5 1 Chan...

Page 33: ...n player is in programmed play mode DTS indicator Lights when DTS sound on DVD is being played back Linear PCM indicator Lights when non compressed digital sound on CD or DVD is being played back Dolby digital indicator Lights when Dolby digital Audio sound on DVD is being played back MPEG indicator Lights when MPEG sound is being played back Disc information indicator Shows the information on dis...

Page 34: ...TE Turn the DVD player Power off before changing over the switch T our of the Remote Control 10 ENTER DVD Function Buttons DVD POWER Button Turns the player on and off NUMBER Buttons REPEAT Button Allows you to repeat play a title chapter track or disc and A B REPEAT STEP Button Advances playback one frame at a time SETUP Button Brings up the DVD player s Setup menu MODE Button Allows you to progr...

Page 35: ...UT R2 L2 V2 V1 R1 L1 12 C hoosing a Connection Connection to a TV Method 1 DVD Player TV with Video Input Jack Method 2 DVD Player TV with S Video Input Jack Method 3 DVD Player TV with Component Video Input Jacks TV Normal Widescreen Projection etc Connection to a TV For Video Basic Audio Video Input Jack OR OR AV Cable included S Video Cable not included Video Cables not included Good picture Be...

Page 36: ...or Tray in the direction of arrow A by both hand to remove 3 Close Tray Œ and power off Note If Tray Œ doesn t open insert a Screw driver into the Emergency hole ˇ as shown in detailed drawing and then turn it in the direction of arrow B Open Tray manually CLOSE OPEN ˇ EMERGENCY HOLE Bottom View SCREW DRIVER B Œ TRAY DOOR TRAY A A Fig 4 1 Door Tray Removal ...

Page 37: ...mbly 4 1 2 Top Cabinet Removal 1 Remove 5 Screws Œ on the back Top Cabinet 2 Remove 4 Screws ˇ on the left and right side 3 Lift up the Top Cabinet in direction of arrow Œ 5 SCREWS 2 SCREWS ˇ 2 SCREWS Fig 4 2 Top Cabinet Removal ...

Page 38: ...ˆ FRONT PCB 5 SCREWS Ø KEY PCB Fig 4 3 Ass y Front Cabinet Front Key PCB Removal 4 1 3 Ass y Front Cabinet Front Key PCB Removal 1 Remove 2 Screws Œ and disassemble the Ass y Front Cabinet 2 Remove 12 Screws ˇ and disassemble the Front Key PCB ˆ Ø ...

Page 39: ...s and lift the Jack PCB ˇ up CAUTIONS 1 When disassembling switch the SW5 to OFF on the Deck PCB and remove the FPC connected to DCN1 on Main PCB See Fig 1 4 on page 1 6 2 When assembling insert the FPC into the DCN1 on Main PCB and switch SW5 to ON on the Deck PCB See Fig 1 4 on page 1 6 3 Disconnect FPC Pin 40 from DCN1 on Main PCB ˆ remove 2 Screws and lift the Main PCB ˆ up 4 Remove 5 Screws Ø...

Page 40: ...Disassembly and Reaasembly 4 5 MAIN PCB JACK PCB S M P S PCB Fig 4 5 Wire Arrangement Top View Wire Arrangement ...

Page 41: ...assembly and Reaasembly Œ 2 SCREWS 2 SCREWS ˇ BRACKET PCB 4 SCREWS 4 1 5 Ass y Deck Removal 1 Remove 4 Screws Œ and Bracket PCB ˇ 2 Remove 4 Screws from the Ass y Deck and lift it up Fig 4 6 Ass y Deck Removal ...

Page 42: ...Disassembly and Reaasembly 4 7 JACK PCB MAIN PCB S M P S PCB KEY PCB FRONT PCB 4 2 PCB Location Fig 4 7 PCB Location ...

Page 43: ...CN01 JACK PCB S M P S PCB PCN02 ˇ CN1 JACK PCB MAIN PCB CN8 ˆ FCN04 JACK PCB FRONT PCB FCN04 Ø JCN02 JACK PCB FRONT PCB FCN01 MCN05 JACK PCB MOTOR PCB TCN03 Ô DCN1 MAIN PCB DECK PCB CN1 Ò PCN1 MAIN PCB S M P S PCB PCN03 Ú CT1 CT2 CT3 CT4 CT5 CT6 CT7 JACK PCB SMPS PCB Ô CT6 Ú Ò CT7 4 3 Connector Diagram Fig 4 8 Connector Diagram ...

Page 44: ...on page 1 6 1 Insert a Screw driver into Emergency hole Œ and turn Gear Load ˇ in the direction of arrow A 2 When the Tray comes out a little pull it in the direction of arrow B by hand 3 Disconnect Flat Cable Ø 4 Pull the Tray to disassemble while simultaneously pushing the Stopper ˆ in direction of arrow C CAUTION Do not stain with grease Pick Up Lens Turn table Roulette Disc Tray Disc Belt Fig ...

Page 45: ...10 Disassembly and Reaasembly 4 4 2 Tray Roulette Removal 1 Remove Screw Œ 2 Lift up the Tray Roulette Fig 4 10 Tray Roulette Removal Œ SCREW TRAY ROULETTE TRAY DISC Assembly Point TRAY ROULETTE TRAY DISC ...

Page 46: ...and lift up the Bracket Worm Ass y ˆ 4 Remove Belt Ø 5 Remove Washer and the Gear Roulette 6 Remove 2 Screws and the Shaft Worm Ass y 7 Remove 2 Screws Ô and the Worm Motor Fig 4 11 Bracket Worm Ass y Removal Bottom View SENSOR PCB SENSOR PCB 2 SCREWS 2 SCREWS Ø BELT Œ LCN02 ˆ BRACKET WORM ASS Y WASHER GEAR ROULETTE SHAFT WORM ASS Y Ô 2 SCREWS WORM MOTOR ˇ HOOK ˇ HOOK ˇ HOOK ˇ HOOK ˇ HOOK ...

Page 47: ...row A so that Ass y P U Deck ˆ is positioned at DATIL A 3 Remove the Ass y P U Deck ˆ in direction of arrow B CAUTION Do not stain with grease Pick Up Lens Turn table Roulette Disc Tray Disc Belt Fig 4 12 Ass y P U Deck Removal ˆ ASS Y P U DECK Œ 2 SCREWS B SLIDER RACK Assemlby Point SLIDER RACK A CLOSE OPEN EMERGENCY HOLE Bottom View ˇ SCREW DRIVER GEAR LOAD DETAIL A ...

Page 48: ...ider Rack Removal 1 Remove the Slider Rack in direction of arrow B while simultaneously pushing the Lever Locker Œ in direction of arrow A Fig 4 13 Slider Rack Removal 1 Œ LEVER LOCKER A B SLIDER RACK SLIDER RACK Œ LEVER LOCKER Assembly Point ...

Page 49: ...e Belt Pulley Œ 2 Push the Hook ˇ in the Boss in the direction of arrow 3 Lift up the Gear Pulley CAUTION Do not stain with grease Pick Up Lens Turn table Roulette Disc Tray Disc Belt Fig 4 14 Belt Pulley Gear Pulley Removal Œ BELT PULLEY GEAR PULLEY BOSS GEAR PULLEY BOSS ˇ HOOK ...

Page 50: ...rrow and lift up Gear Tray Œ 2 Push the Hook below the Gear Convert ˇ in the direction of arrow and lift up Gear Convert ˇ 3 Push the Hook below the Gear Cam in the direction of arrow and lift up Gear Cam 4 Remove Gear Load ˆ Fig 4 15 Gear Tray Gear Convert Gear Cam Gear Load Removal Œ GEAR TRAY HOOK ˇ GEAR CONVERT GEAR CAM ˆ GEAR LOAD Bottom Side ...

Page 51: ... 1 Remove Spring Locker Œ 2 Lift up the Lever Locker pushing the direction of arrow A 3 Remove the Gear Syncro in direction of arrow B while simultaneously pushing the 2 Hooks ˇ Fig 4 16 Spring Locker Lever Locker Removal Œ SPRING LOCKER LEVER LOCKER GEAR SYNCRO ˇ HOOKS A B ...

Page 52: ...he direction of arrow A 4 Hooks in the direction of arrow B and lift up PCB Motor Ass y ˇ 2 Push the 3 Hooks ˆ Ø in the direction of arrow C and lift up PCB Switch Ass y Fig 4 17 PCB Motor Ass y PCB Switch Removal Œ HOOK A 2 HOOKS 2 HOOKS B B ˇ PCB MOTOR ASS Y PCB SWITCH HOOK ˆ HOOK Ø HOOK C C C ...

Page 53: ...emoval 1 Pull the Clamper by hand in the direction of arrow B while simultaneously pushing the 4 Hooks Œ in direction of arrow A 2 Remove the Magnet ˇ 3 Lift up the Plate Chuck Fig 4 18 Clamper Removal CLAMPER PLATE CHUCK ˇ MAGNET Œ 4 HOOKS B A A A A ...

Page 54: ...C Œ from PCB Deck Ass y 2 Disconnect FPC from Motor Spindle Ass y Side 3 Remove the soldering pole of Feed Motor wire ˇ Red Black 4 Remove 2 Screws 5 Remove PCB Deck Ass y ˆ Fig 4 19 PCB Deck Ass y Removal 2 SCREWS ˇ FEED MOTOR WIRE ˆ PCB DECK ASS Y Œ FPC PICK UP FLAT CABLE ...

Page 55: ...4 20 Disassembly and Reaasembly 4 4 12 Sub Chassis Removal 1 Remove the 4 Screws Œ 2 Lift up the Ass y Brkt Deck Fig 4 20 Sub Chassis Removal Œ 4 SCREWS ASSY BRAK DECK ...

Page 56: ... Feed A ˇ 3 Remove 2 Screws 4 Remove Shaft Pick Up ˆ and Pick Up Ass y Ø 5 Remove 1 screw 6 Remove 2 Screws 7 Remove 2 Sprindle and Motor Sprindle Ass y Fig 4 21 Ass y Brkt Deck Removal 2 SCREW Œ WASHER GEAR FEED B 2 SCREWS 1 SCREW ˆ SHAFT PICK UP ˇ GEAR FEED A Ø PICK UP ASS Y SPRING SPINDLE MOTOR SPINDLE ...

Page 57: ...4 22 Disassembly and Reaasembly 4 4 14 Bracket Deck Ass y Removal 1 Remove 4 Screws Œ 2 Lift up the Bracket Deck Ass y Fig 4 22 Bracket Deck Ass y Removal Œ 4 SCREWS BRACKET DECK ASS Y ˇ SUB CHASSIS ...

Page 58: ...embly and Reaasembly 4 23 4 4 15 Assembly of Gear Fig 4 23 Assembly of Gear Œ GEAR CAM GEAR TRAY ˇ GEAR CONVERT TRAY DISC Œ GEAR CAM GEAR TRAY ˇ GEAR CONVERT TIMING POINT 2 TIMING POINT 1 GEAR TRAY Œ GEAR CAM ...

Page 59: ...4 24 Disassembly and Reaasembly MEMO ...

Page 60: ...t Vs Ns Vp Np REGULATOR Common power Ex 120 220V 50 60Hz Fig 5 1 Linear Power Supply Waveform Description Vs t 0 Fig 5 2 Vs t 0 Fig 5 3 Vout t 0 Fig 5 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 61: ...gin design Greater core size and condensor capacity are ne eded because the transformer works on a single power frequency 5 1 1 b S M P S Pulse width modulation method v Vreg Vout 0 t Change by common power Regulator loss Fig 5 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 Duty Ton T x 10...

Page 62: ...ress noise High inverted power occurs at switch PIC1 off because of the 1st winding of transformer V LI xdi dt LI Leakage Induction A very high residual voltage exists on both terminals of PQR11 because dt is a very short 2 SNUBBER circuit protects PIC1 from damage through leakage voltage suppression by RC Charges the leakage voltage to PER11 PDS11 PCR11 PCD12 and discharges to PR15 and PR16 5 1 2...

Page 63: ... load of 5 8V terminal decreses or AC inout voltage increases and Vout increases over 5 8V Then PICS2 Vs potential up over 2 5V PICS2 Vc down PICS1 A K potential down PICS1 C E current up PQR12 base current up PQR11 base current down Vout down Maintain 5 8V PRD31 PRD32 Reduce 5 8V overshoot PRS32 PCS32 Prevent PICS2 oscillation for phase correction 5 1 2 d Feedback Control Circuit Fig 5 9 ...

Page 64: ...ower TR Control Circuit Converter Voltage Detection Circuit FLT Driving Circuit 3 3V Rectified Smoothing Circuit 5V Rectified Smoothing Circuit 8V Rectified Smoothing Circuit 8V Rectified Smoothing Circuit 3 3V Rectified VoltageCircuit 5V Rectified VoltageCircuit x2 Motor 8V 1 Port 8V Rectified VoltageCircuit 8V Rectified VoltageCircuit O U T P U T Fig 5 10 ...

Page 65: ...nal Fig 5 11 shows the flow of signal generated by the pick up A B C D signals detected from pick up are converted in to RF signal A B C D via RF summing AMP Fig 5 12 shows the waveform equalizing block diagram for the RF signal It outputs to EQout Pin 86 terminal by initially changing switching AMP gain of DVD and CD and then adjusting the level in RF SUM AGC It controls RF SUM AGC gain by means ...

Page 66: ... and CD EQ are as follows 1 DVD CD EQ control parameter Œ EQG Pin 97 Changes the gain of peak frequency with EQ frequency characteristic Convert PWM signal output from KS1453 into DC via low pass filter EQF Pin 98 Changes the peak frequency with EQ frequency characteristic Convert PWM signal output from KS1453 into DVD via low pass filter ...

Page 67: ...nt panel or instructions of remote control through communication with Micom FIC1 LC86P6232 of front and controls the devices on board to execute the corresponding commands after initializing the devices connected with micom on board at power on 5 3 2 Block Diagram RIC1 RF AMP KS1461 AIC1 D A CONVERTER AK4393 AIC2 D A CONVERTER AK4356 SIC1 DIGITAL SERVO KS1452 ZIC1 A V DECODER ZIVA4 1 DIC1 DATA PRO...

Page 68: ...CS2 MIC2 22 EPROM CHIP SELECT CH2 DSPCS DIC1 2 DATA PROCESSOR CHIP SELECT CH3 DVD1CS ZIC1 208 A V DECODER CHIP SELECT CH4 SRVCS SIC1 10 DIGITAL SERVO CHIP SELECT CH5 WR MIC1 89 MICOM OUTPUT WRITE SIGNAL CH6 RD MIC1 88 MICOM OUTPUT READ SIGNAL CS2 DSPCS DVD1CS CSB RD WR Fig 5 14 CH1 CS2 MIC2 22 EPROM CHIP SELECT CH2 DSPCS DIC1 2 DATA PROCESSOR CHIP SELECT CH3 DVD1CS ZIC1 208 A V DECODER CHIP SELECT...

Page 69: ...CH2 DSPCS DIC1 2 DATA PROCESSOR CHIP SELECT CH3 DVD1CS ZIC1 208 A V DECODER CHIP SELECT CH4 SRVCS SIC1 10 DIGITAL SERVO CHIP SELECT CH5 WR MIC1 89 MICOM OUTPUT WRITE SIGNAL CH6 RD MIC1 88 MICOM OUTPUT READ SIGNAL CS2 DSPCS DVD1CS CSB RD WR Fig 5 16 Servo Access ...

Page 70: ...ect lens of Pick up and disc for surface vibration of disc 2 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 ...

Page 71: ...SIC1 FEI Pin39 of RIC1 ABCD 2 PLAY When focus loop closes the loop during focus servo on both pin 65 and pin 75 of SIC1 are controlled by VREF voltage approx 2 5V and pin 26 27 of SIC4 are approximately 4 5V 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 pin36 of RIC1 uses the phase difference of A C and B D in RIC1 an...

Page 72: ...ERVO Normal play mode Move SLED motor slightly by means of PWM signal in SIC1 pin 73 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 SIC1 uses MIRR and TZC signal of SIC1 38 52 Then read ID and compute the existing track count after input of next t...

Page 73: ...tus is reported by interrupt to main micom which controls the servo to kick back the pick up to the previous track after memorizing 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 because A V decoder reads out data of memory When the memory has an empty space where data can b...

Page 74: ...rm Description It measures the timing that data processed in DIC1 at DVD playback STROBE REQ DACK SDATA all 2 2 0 1 0 Fig 5 20 CH1 STROBE DIC1 69 CLOCK CH2 REQ DIC1 70 DATA REQUEST CH3 DACK DIC1 58 DATA ACKNOWLEDGE CH4 SDATA DIC1 60 67 DATA ...

Page 75: ...gram 5 6 2 NTSC Digital Encoder ZIVA 4 1 Built in video encoder ZIC1 inputted from pin159 with 27MHz generates HSYNC and VSYNC which are based on video signal ZIC1 is synchronous signals with decoded video signal and control the output timing of 8bit video signal of ITU R601 format The inputted 8bit data which decoded from video decoder block is demuxed with each 8bit of Y R Y B Y The separate sig...

Page 76: ... is high active if the pin is floating and connecte to power the output isgnal is never outputted CVBS Y C Y Cr Cb outputted from video encoder are inputted to VIC1 Pin 7 Pin2 Pin4 and VIC2 Pin7 Pin4 Pin2 respectively and outputted from VIC1 Pin15 Pin13 Pin10 and VIC2 Pin15 Pin13 Pin10 Pin9 Pin12 Pin14 of VIC1 VIC2 are feedback pin to SAG compensation DC characteristic compensation of siganl The s...

Page 77: ...and surround L R center and subwoofer aren t outputted If DVD of 2 channels source disc is used it is outputted by the same way with CD and VCD If 5 1 channel source disc front L R channel is outputted in Data 1 Surround L R in Data 2 and Center Sub woofer in Data 3 Front L R Surround L R Center Sub woofer are outputted in mixed audio output 6 channel LF RF LS RS C Sub woofer AIC1 AK4324 AIC2 AK43...

Page 78: ... isn t compressed so it is called CD DA LPCM data The 2 channels data is converted through audio decoder 2 channel data and Data 0 and Data 1 are outputted in digital audio interface Via IEC 958 output process they is transmitted to digital amplifier or AC 3 MPEG DTS amplifier built in the external digital input source with IEC 958 1937 transmission format AUDIO INPUT BUFFER AUDIO OUTPUT BUFFER EX...

Page 79: ...Circuit Descriptions 5 20 MEMO ...

Page 80: ...om object lens at play key input No focus incoming and no disc occurs Yes No B A No focus incoming FE in SIC1 65 is within specified range DRIC4 1 2 output are normal Check open state from DRIC4 to pick up Check RIC1 and A B C D input Check DRIC4 Yes Yes No No A ...

Page 81: ... and connection Check MIC1 Yes No LED SLED SIC4 32 33 output are normal Check SIC4 Yes No NO LD ON RIC1 28 is 5V Current exceeds 0 1A LD out pick up replace Open check in related circuit Check MIC1 Yes Yes Yes No No Divide RQ1 emitter terminal voltage and 5V real voltage difference into 10ohm B ...

Page 82: ...s Yes Yes A See Fine Seek Check No Yes Check pick up No FINE SEEK Check FINE SEEK MIRR signal RIC1 57 is missing TZCO signal SIC1 52 is occurs Track incomming is delayed TE is within 2V and 3V Pick up transfer smooth Check RIC1 Peripheral curcuit Check SIC1 Peripheral curcuit Time out due to many jump counts Check SIC1 peripheral circuit SIC1 76 output is normal SIC4 28 29 terminal outputs are nor...

Page 83: ...ck DIC1 MIC1 Check DRIC1 soldering and power Check path to RIC1 and SIC1 Check RIC1 soldering and power RIC1 86 output are normal RIC1 88 output is normal Check RIC1 peripheral circuit and A B C D Yes Yes Yes Yes Yes Yes No No No No No No No Tray open close MIC1 84 85 is Open L L Close H H Check SIC4 35 36 output at open close Check signal line state from SIC4 35 36 to tray motor Micom MIC1 error ...

Page 84: ... output is normal Check AOP1 peripheral circuit Yes No Base terminal level of AQ1 AQ3 are L Check FIC1 47 mute Yes No DVD LF RF output error Analog Audio output 5 1 CH Normal DATA 1 is input in AIC1 13 Analog output of AIC1 1 2 43 44 is normal Check AVJ3 LF RF peripheral soldering shot Check ZIC1 120 output Check ZIC1 125 DVD 18 432MHz Yes Yes No No AOP2 1 7 output is normal Check AOP2 peripheral ...

Page 85: ...s normal Check AOP3 peripheral circuit Yes No Base terminal level of AQ75 AQ77 are L Check FIC1 47 mute Yes No DVD CT SW output error Analog Audio output 5 1 CH Normal DATA 3 is input in AIC2 15 Analog output of AIC1 35 36 37 38 is normal Check AVJ3 CT SW peripheral soldering shot Check ZIC1 118 output Check ZIC1 125 DVD 18 432MHz Yes Yes No No AOP4 1 7 output is normal Check AOP3 peripheral circu...

Page 86: ...peripheral circuit Check AIC3 Yes No No Yes No Power Standby LED OFF PFD01 error PDS01 voltage is missing Replace PQR11 Replace fuse Replace PDS01 04 No No Yes Collector of PQR11 output normal voltage Check 2d voltage No Operation of PQR11 is normal Replace PQR12 Yes No Switching operation of PQR11 is normal Replace PQR11 Check feed back Yes Yes No Yes ...

Page 87: ...common bus 8 bit Check short or operating of micom Check soldering of micom and communication devices Yes No Play works Check ZIC1 peripheral unit Yes No Yes Yes Yes Yes C Key operation or remote control error MIC1 9 is fixed to 0V MIC7 4 5 pin is fixed to 0V Check A V decoder signal process block Check DVD signal process block Yes Yes MIC1 10 19 waveform state 0 1 changes whenever pressing front ...

Page 88: ...Check reset peripheral circuit of FIC2 Yes No FIC1 soldering is OK Check FIC1 soldering Yes No Key of STOP PLAY OPEN work normally Check S W interface Check communication status with main micom Check FIC1 pins 27 73 74 75 95 No No DVD play error NO DISK appears after pick up moves up and down twice at power on 27MHz clock is input in DIC1 14 ZIC1 peripheral soldering and short check Check DIC1 MIC...

Page 89: ...SW1 Yes No No Pin 87 in FIC1 is high state Check the connection between pin 87 in FIC1 and VR121 Yes No Yes D Y Pr Pb output error VSW1 video select switch is down position VR121 of VSW1 is low state Move the select switch to down position Check the soldering of VSW1 Yes No No Pin 87 in FIC1 is high state Check the connection between pin 87 in FIC1 and VR121 Yes No Yes D ...

Page 90: ...No Pin 1 in VIC1 is in low state Yes Check the connection netween pin 133 in ZIC1 and VIC1 Check the connection betwen VIC1 and emitter of PQS58 Check the connection between pin 10 in FIC1 and pin 1 in VIC1 Check the soldering of VIC1 No No Check the connection between VIC1 and output jack Pin of VDD_2 5 VDD 3 3 in Zic1 has normal level Check the connection between pin 1 in PCNS1 and pin 3 in ZIC5...

Page 91: ...Troubleshooting 6 12 MEMO ...

Page 92: ...7 1 7 Exploded View 7 1 Cabinet Assembly 7 2 Deck Assembly Page 7 2 7 3 ...

Page 93: ...Exploded Views 7 2 7 1 Cabinet Assembly 002 JACK P C B 003 SMPS P C B 101 001 MAIN P C B 109 109 104 005 KEY P C B 004 FRONT P C B 103 105 102 106 110 ...

Page 94: ...Exploded Views 7 3 7 2 Deck Assembly 107 906 108 TS16391 ...

Page 95: ...Exploded Views 7 4 MEMO ...

Page 96: ...15901 MECHA ASSY DVD 102 TE13631 CORD POWER 103 TJ14351 PANEL FRONT ASSY 104 TJ14361 COVER TOP 105 TJ14371 DOOR ASSY 106 TJ14381 PANEL REAR 107 TJ14391 BELT 108 TJ14401 BELT 109 TJ14411 FOOT FRONT 110 TJ14252 HOLDER CORD 001 TS15851 PWB ASSY MAIN 002 TS15861 PWB ASSY JACK 003 TS15871 PWB ASSY SMPS 004 TS15881 PWB ASSY FRONT 005 TS15891 PWB ASSY KEY ACCESSORIES 802 TS15841 REMOTE HAND SET 803 TE133...

Page 97: ...8 2 Replacement Parts List MEMO ...

Page 98: ... M R1 M R2 AIC1 AK4393 2CH Audio DAC VIC1 BA7660 6dB AMP VIC2 BA7660 6dB AMP LPF LPF AMP AMP C S W LPF LPF LPF LPF LPF LPF AMP AMP LS RS LPF LPF AMP AMP LF RF AIC2 AK4356 5 1CH Audio DAC LPF LPF AMP AMP DRIC13 KA3082 Open Close ZIC2 3 32M SDRAM MIC4 2K EEPROM Remote Control MIC2 8M EPROM Coaxial MIC1 TMP95C265F Main Controller FIC1 LC86P6232 Front Controller ZIC1 ZiVA 4 1 A V Decoder Optical A V D...

Page 99: ...Block Diagram 9 2 MEMO ...

Page 100: ...10 1 10 PCB Diagrams 10 2 10 3 10 4 10 5 10 6 10 7 10 7 10 7 10 7 10 1 S M P S 10 2 Main 10 3 Jack 10 4 Front 10 5 Key 10 6 Deck 10 7 Motor 10 8 Sensor 10 9 Switch ...

Page 101: ...PCB Diagrams 10 2 10 1 S M P S ...

Page 102: ...PCB Diagrams 10 3 10 2 Main COMPONENT SIDE SOLDER SIDE ...

Page 103: ...PCB Diagrams 10 4 10 3 Jack ...

Page 104: ...PCB Diagrams 10 5 10 4 Front COMPONENT SIDE SOLDER SIDE ...

Page 105: ...PCB Diagrams 10 6 10 5 Key COMPONENT SIDE SOLDER SIDE ...

Page 106: ...PCB Diagrams 10 7 10 6 Deck 10 8 Sensor 10 7 Motor 10 9 Switch ...

Page 107: ...PCB Diagrams 10 8 MEMO ...

Page 108: ...11 1 11 Wiring Diagram ...

Page 109: ...Wiring Diagram 11 2 MEMO ...

Page 110: ... M P S 12 2 Main Micom 12 3 Servo 12 4 RF 12 5 Data Processor 12 6 AV Decoder 12 7 Video 12 8 Audio 12 9 Audio 5 1 Channel 12 10 AV Interface 12 11 Front Micom 12 12 Key 12 13 Deck 12 14 Motor Switch Sensor 12 15 Remote Control Block Identification of PCB Main PCB Component Side Jack PCB Conductor Side AV INTERFACE ...

Page 111: ...Schematic Diagrams 12 2 12 1 S M P S ...

Page 112: ...Schematic Diagrams 12 3 12 2 Main Micom ...

Page 113: ...Schematic Diagrams 12 4 12 3 Servo ...

Page 114: ...Schematic Diagrams 12 5 12 4 RF ...

Page 115: ...Schematic Diagrams 12 6 12 5 Data Processor ...

Page 116: ...Schematic Diagrams 12 7 12 6 AV Decoder ...

Page 117: ...Schematic Diagrams 12 8 12 7 Video ...

Page 118: ...Schematic Diagrams 12 9 12 8 Audio ...

Page 119: ...Schematic Diagrams 12 10 12 9 Audio 5 1 Channel ...

Page 120: ...Schematic Diagrams 12 11 12 10 AV Interface ...

Page 121: ...Schematic Diagrams 12 12 12 11 Front Micom ...

Page 122: ...Schematic Diagrams 12 13 12 12 Key ...

Page 123: ...Schematic Diagrams 12 14 12 13 Deck ...

Page 124: ...Schematic Diagrams 12 15 12 14 Motor Switch Sensor ...

Page 125: ...Schematic Diagrams 12 16 12 15 Remote Control ...

Page 126: ...Copyright Hitachi Ltd 2000 All rights reserved DV C605U Printed in Japan II Digital Media Products Division Tokai TK No 9009E DV C605U DV C605U ...

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