Hitachi DV-C605U Service Manual
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Hitachi DV-C605U Service Manual

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SERVICE MANUAL
Part number for Pickup Assy added 6/21/01
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
September
DVD PLAYER
2000
Digital Media Products Division, Tokai
TK
No.9009E
DV-C605U
CONTENTS
12. Schematic Diagram

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  • Page 1: Table Of Contents

    No.9009E DV-C605U SERVICE MANUAL CONTENTS 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.

  • Page 2: Precautions

    1. Precautions 1-1 Safety Precautions Any measurements not within the limits specified 1) Before returning an instrument to the customer, always make a safety check of the entire herein indicate a potential shock hazard that must be eliminated before returning the instrument to instrument, including, but not limited to, the following items: the customer.
  • Page 3 Precautions 2) Read and comply with all caution and safety re- lated notes non or inside the cabinet, or on the 5) Components, parts, and/or wiring that appear to chassis. have overheated or that are otherwise damaged should be replaced with components, parts and/ or 3) Design Alteration Warning-Do not alter of add to wiring that meet original specifications.
  • Page 4 Precautions 1-2 Servicing Precautions (4) An insulation tube or tape is sometimes used and CAUTION : Before servicing Instruments covered some components are raised above the printed by this service manual and its supplements, read and wiring board for safety. The internal wiring is follow the Safety Precautions section of this manual.
  • Page 5 Precautions 1-3 ESD Precautions (7) Immediately before removing the protective ma- Electrostatically Sensitive Devices (ESD) terials from the leads of a replacement ESD device, touch the protective material to the chassis or Some semiconductor (solid state) devices can be circuit assembly into which the device will be damaged easily by static electricity.
  • Page 6 Precautions 1-4 Handling the optical pick-up The laser diode in the optical pick up may suffer WRIST-STRAP electrostatic breakdown because of potential static FOR GROUNDING electricity from clothing and your body. The following method is recommended. THE UNIT (1) Place a conductive sheet on the work bench (The black sheet used for wrapping repair parts.) CONDUCTIVE SHEET (2) Place the set on the conductive sheet so that the...
  • Page 7 Precautions 1-5 Pick-up disassembly and reassembly 1-5-1 Disassembly 1-5-2 Assembly 1) Remove the power cable. 1) Replace the Pick-up. 2) Switch SW5 on Deck PCB to “OFF” before 2) Assemble the Deck PCB. removing the Flat Cable. 3) Reassemble the Deck. ( Inserted into Main PCB DCN1.

  • Page 8: Reference Information

    2. Reference Information 2-1 IC Descriptions 2-1-1 AIC1 (AK4393 ; Digital-to-Analog Converter) DVSS CKS2 Left Channel DVDD CKS1 De-emphasis Multi-bit ˘• Switched Right Output + Serial MCLK CKS0 Soft Mute Interpolator Modulator Capacitor Filter Right Output - Input Control Serial BICK VCOM Left/Right Clock...
  • Page 9 Reference Information 2-1-2 DIC1 (KS1453 ; Data Processor)
  • Page 10 Reference Information...
  • Page 11 Reference Information 2-1-3 DIC2 (KM416C254D ; CMOS 4M DRAM) CASL DATA-IN BUFFER CONTROL LOGIC CASH NO.2 CLOCK IO15 GENERATOR DATA-OUT BUFFER COLUMN COLUMN ADDRESS DECODER BUFFER REFRESH SENSE AMPLIFIERS CONTROLLER VO GATING 512x16 REFRESH COUNTER 512x512x16 ROW. MEMORY ADDRESS ARRAY BUFFERS(9) NO.1CLOCK GENERATOR...
  • Page 12 Reference Information PIN NO. SYM. TYPE DESCRITION 16~19, 22~26 A0~A8 Input Address Input Input Row Address Strobe CASH Input Column Address Strobe/Upper Byte Control CASL Input Column Address Strobe/Lower Byte Control Input Write Enable Input Output Enable 2~5, 7~10, 31~34, 36~39 I/O0~I/O15 Input/Output Data Input/Output...
  • Page 13 Reference Information 2-1-4 MIC1 (TMP95C265 ; Main Micom) AND~AN2 900/H VCC [3] (PA0~PA2) VSS[3] AN3/ADTRG (PA3) 10BIT 8CH AN4~AN7 (PA4~PA7) CONVERTER VREFH VREFL AVCC AV55 AM8/16 8BIT 2CH RESET 32bit DAOUT0,1 CONVERTER (P00~P07) PORT0 D0~D7 TxD0(P80) SERIAL I/O PORT1 (P10~P17) RxD0(P81) (CH.
  • Page 14 Reference Information...
  • Page 15 Reference Information 2-1-5 MIC2 (M27C801 ; 8Mbit (1Mbx8) UVEPROM and OTP EPROM) LOGIC DIAGRAM A0-A19 A0-Q7 GVpp TOP VIEW FUNCTION NAME A0-A19 Address Inputs Q0-Q7 Data Outputs Chip Enable Output Enable/Program Supply OVpp Supply Voltage Ground...
  • Page 16 Reference Information 2-1-6 MIC3 (W24257A ; CMOS SRAM) BLOCK DIAGRAM DECODER CORE ARRAY I/O1 CONTROL DATA I/O I/O8 TOP VIEW SYMBOL DESCRIPTION Address Inputs A0 - A14 Data Inputs/Outputs I/O1 - I/O8 Chip Select Input Write Enable Input 28-pin Output Enable Input V DD Power Supply I/O8...
  • Page 17 Reference Information 2-1-7 FIC1 (LC86P6232 ; Front Micom) Interrupt Control Stand-by Control Clock Generator X’tal Base Timer Bus Interface B Reg SIO 0 Port 1 C Reg SIO 1 Port 7 Timer 0 Port 8 Timer 1 Port 2 Port 3 Port 4 INT0-3 Noise Filter...
  • Page 18 Reference Information 2-11...
  • Page 19 Reference Information 2-1-8 RIC1 (KS1461 ; RF Signal Processor) t o RF EQ TUNI NG BLOCK AGC-HOLD(00 H) AGC_ D ET BCAO BLOCK BCAI RF SUM & AGC Equalizer ADVD RFRP BDVD CDVD GAIN_ EQ(02 H) DDVD RESET AUTO RFCT OFSTCTL &...
  • Page 20 Reference Information Related Related Pin Name Description Related Block Pin Name Description Related Block Part Part Cap connection terminal (open) for 3B TE Offset Optical main beam A, AC Coupling input terminals for CD of RF PRE AMP TE3OFST 3B TE AMP block DPD EQ (A+C) output terminal DPDEQ1...
  • Page 21 Reference Information 2-1-9 SIC1 (KS1452 ; Servo Processor) DIRC SSTOP/PS0 SMON LOCK DFCT FOKB MIRR TZCA PHI1 XOUT TEST RSTB TILTO TILTI 2-14...
  • Page 22 Reference Information 2-15...
  • Page 23 Reference Information 2-1-10 SIC4 (KA3017 ; Motor & Actuator Driver) FIN (GND) PWRGND Power Save Absolute Values Direction Detector Detector OPIN + OPIN - OPOUT BTLSGND VCC1 BIAS AVM12 AVM4 MUTE12 MUTE MUTE MUTE MUTE3 MUTE4 FIN (GND) 2-16...
  • Page 24 Reference Information Symbol Description HALL BIAS FG SIGNAL OUTPUT TORQUE CONTROL REFERENCE TORQUE CONTROL SIGNAL VCC2 — SUPPLY VOLTAGE — PHASE COMPENSATION CAPACITOR SIGGND — SIGNAL GROUND — MOTOR SUPPLY VOLTAGE CURRENT SENSOR START/STOP 3-PHASE ROTATIONAL DIRECTION OUTPUT SHORT BRAKE PWRGND —...
  • Page 25 Reference Information 2-1-11 ZIC1 (ZIVA 4.1 ; A/V Decoder) 2-18...
  • Page 26 Reference Information 2-19...
  • Page 27 Reference Information 2-20...
  • Page 28 Reference Information 2-1-12 ZIC2/ZIC3 (KM416S1120D ; CMOS 16M SDRAM) Data Input Register DQ15 DQ14 LDQM Bank Select DQ13 DQ12 512K x 16 DQ11 DQ10 512K x 16 LDQM N.C/RFU Column Decoder UDQM Latency & Burst Length A10/AP LCKE Programming Register LRAS LCBR LCAS...
  • Page 29 Reference Information 2-1-13 AIC2 (AK4356 ; 6CH. D/A Converter) Block Diagram DZFL1 AK4356 Audio LOUT1+ DATT LOUT1- MCLK MCKO DZFR1 LRCK Controller LRCK ROUT1+ DATT BICK ROUT1- BICK DZFL2 LOUT2+ DATT Control LOUT2- CCLK Register DZFR2 CDTI ROUT2+ DATT ROUT2- DZFL3 LRCK LOUT3+...
  • Page 30 Reference Information Pin Name Function LOUT1- DAC1 Lch Negative Analog Output Pin LOUT1+ DAC1 Lch Positive Analog Output Pin DZFL2 DAC2 Lch Zero Input Detect Pin DZFR1 DAC1 Rch Zero Input Detect Pin DZFL1 DAC1 Lch Zero Input Detect Pin CAD0 Chip Address 0 Pin CAD1...
  • Page 31 Reference Information 2-1-14 DRIC3/DRIC13 (KA3082 ; Motor Drive IC) BLOCK DIAGRAM DRIVER OUT PRE DRIVER LOGIC SWITCH PIN CONFIGURATIONS KA3082 PIN DESCRIPTION Pin No. Symbol Description Pin No. Symbol Description — Ground Input 2 Output 1 — Supply voltage (Signal) —...

  • Page 32: Product Specifications And Operating Instructions

    3. Product Specifications and Operating Instructions 3-1 Product Specifications Power Requirements AC 120V, 60Hz Power Consumption Weight 6.7kg GENERAL Dimensions W 430mm x D 408mm x H 110mm Operating Temperature Range +5°C ~ +35°C Operating Humidity Range 10% to 75% Reading Speed : 3.49 m/s (Digital Versatile Disc) Approx.
  • Page 33 Product Specifications and Operating Instructions 3-2 Operating Instructions...
  • Page 34 Product Specifications and Operating Instructions...
  • Page 35 Product Specifications and Operating Instructions...

  • Page 36: Disassembly And Reassembly

    4. Disassembly and Reassembly 4-1 Cabinet and PCB Note : Reassembly in reverse order. 4-1-1 Door-Tray Removal 1) Supply power and open Tray Œ. 2) Lift up the Door-Tray ´ in the direction of arrow “A” by both hand to remove. 3) Close Tray Œ...
  • Page 37 Disassembly and Reaasembly 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 ´...
  • Page 38 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 . Œ 2 SCREWS ´ ASS'Y FRONT CABINET ˆ FRONT PCB ˇ...
  • Page 39 Disassembly and Reaasembly 4-1-4 Main PCB, Jack PCB, S.M.P.S. Removal 1) Remove 1 Screw Œ. 2) Remove 4 Screws ´ 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”...
  • Page 40 Disassembly and Reaasembly Wire Arrangement S.M.P.S. PCB JACK PCB MAIN PCB Fig. 4-5 Wire Arrangement (Top View)
  • Page 41 Disassembly and Reaasembly 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. ˇ BRACKET-PCB Œ 2 SCREWS ´ 2 SCREWS ¨ 4 SCREWS Fig.
  • Page 42 Disassembly and Reaasembly 4-2 PCB Location FRONT PCB JACK PCB MAIN PCB S.M.P.S. PCB KEY PCB Fig. 4-7 PCB Location...
  • Page 43 Disassembly and Reaasembly 4-3 Connector Diagram ’ ˆ JACK PCB ∏ ˇ Œ ˝  Ô Ò MAIN PCB ¨ SMPS PCB ´ Ú Ø FRONT PCB ” KEY PCB CONNECTOR NO. DIRECTION CONNECTOR NO. Œ ´ JCN01 JACK PCB S.M.P.S.
  • Page 44 Disassembly and Reaasembly 4-4 Deck 4-4-1 Tray Removal CAUTIONS ; 1) When disassembling Deck Ass’y, 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 Deck Ass’y, insert the FPC into the DCN1 on Main PCB and switch SW5 to “ON”...
  • Page 45 Disassembly and Reaasembly 4-4-2 Tray Roulette Removal 1) Remove Screw Œ. 2) Lift up the Tray Roulette ´. Œ SCREW ´ TRAY ROULETTE ´ TRAY ROULETTE TRAY DISC <Assembly Point> TRAY DISC Fig. 4-10 Tray Roulette Removal 4-10...
  • Page 46 Disassembly and Reaasembly 4-4-3 Bracket Worm Ass’y Removal 1) Disconnect LCN02 Œ from Sensor PCB ´. 2) Push the 4 Hooks ˇ in direction of arrow and remove the Sensor PCB ´. 3) Remove 2 Screws ¨ and lift up the Bracket Worm Ass’y ˆ. 4) Remove Belt Ø.
  • Page 47 Disassembly and Reaasembly 4-4-4 Ass’y P/U Deck Removal 1) Remove 2 Screws Œ. 2) Insert a Screw driver ˇ into Emergency hole ´ and turn Gear Load ¨ in the direction of arrow “A” so that Ass’y P/U Deck ˆ is positioned at DATIL-A. 3) Remove the Ass’y P/U Deck ˆ...
  • Page 48 Disassembly and Reaasembly 4-4-5 Slider Rack Removal 1) Remove the Slider Rack ´ in direction of arrow “B” , while simultaneously pushing the Lever Locker Œ in direction of arrow “A” . <Assembly Point> "B" ´ SLIDER RACK ´ SLIDER RACK Œ...
  • Page 49 Disassembly and Reaasembly 4-4-6 Belt Pulley, Gear Pulley Removal 1) Remove 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. Œ...
  • Page 50 Disassembly and Reaasembly 4-4-7 Gear Tray, Gear Convert, Gear Cam, Gear Load Removal 1) Push the Hook ´ below the Gear Tray Œ in the direction of arrow 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 ´...
  • Page 51 Disassembly and Reaasembly 4-4-8 Spring Locker, Lever Locker Removal 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. ¨...
  • Page 52 Disassembly and Reaasembly 4-4-9 PCB Motor Ass’y, PCB Switch Removal 1) Push the Hook Œ in the 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 ∏. ˇ...
  • Page 53 Disassembly and Reaasembly 4-4-10 Clamper Removal 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¨. ¨...
  • Page 54 Disassembly and Reaasembly 4-4-11 PCB Deck Ass’y Removal 1) Remove FPC 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.
  • Page 55 Disassembly and Reaasembly 4-4-12 Sub Chassis Removal 1) Remove the 4 Screws Œ. 2) Lift up the Ass’y Brkt Deck ´. Œ 4 SCREWS ´ ASSY-BRAK DECK Fig. 4-20 Sub Chassis Removal 4-20...
  • Page 56 Disassembly and Reaasembly 4-4-13 Ass’y Brkt Deck Removal 1) Remove Washer Œ. 2) Remove Gear Feed ´, Gear 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 ”.
  • Page 57 Disassembly and Reaasembly 4-4-14 Bracket Deck Ass’y Removal 1) Remove 4 Screws Œ. 2) Lift up the Bracket Deck Ass’y ´. Œ 4 SCREWS ´ BRACKET DECK ASS'Y ˇ SUB CHASSIS Fig. 4-22 Bracket Deck Ass’y Removal 4-22...
  • Page 58 Disassembly and Reaasembly 4-4-15 Assembly of Gear Œ GEAR CAM TIMING POINT-1 ´ GEAR TRAY Œ GEAR CAM ˇ GEAR CONVERT ´ GEAR TRAY TIMING POINT-2 Œ GEAR CAM ˇ GEAR CONVERT ´ GEAR TRAY ¨ TRAY DISC Fig. 4-23 Assembly of Gear 4-23...
  • Page 59 Disassembly and Reaasembly MEMO 4-24...

  • Page 60: Circuit Descriptions

    5. Circuit Descriptions 5-1 S.M.P.S. 5-1-1 Comparsion between Linear Power Supply and S.M.P.S. 5-1-1 (a) Linear Vout Vreg REGULATOR Common power (Ex.120/220V 50/60Hz) – – (Np) (Ns) Fig. 5-1 Linear Power Supply Waveform/Description Input : Common power to transformer (Vp). Fig.
  • Page 61 Circuit Descriptions Advantages and disadvantages of linear power supply Change by common power 1) Advantages : Little noise because the output Vout waveform of transformer is sine wave. 2) Disadvantages : Vreg Œ Additional margin is required because Vs is chan- ged (depending on power source).
  • Page 62 Circuit Descriptions 5-1-2 Circuit description (FLY-Back Control) 5-1-2 (a) AC Power Rectification/Smoothing Terminal 1) PDS01, PDS02, PDS03, PDS04 : Convert AC power to DC(Wave rectification). 2) PE3 : Smooth the voltage converted to DC. 3) PCR01, PCR02, PCD01, PCD02, PCD03, PLS01, PBS01 : Noise removal at power input/output. 4) PVA1 : SMPS protection at power surge input (PVA1 pattern open is to remove noise).
  • Page 63 Circuit Descriptions 5-1-2 (d) Feedback Control Circuit Fig. 5-9 Operation descriptions 1) Internal OP-Amp ‘+’ base potential of PICS2 is 2.5V and external ‘-’ input potential is connected with PRS33 and PRS34 to maintain Vout of 5.8V. 2) If 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 -->...
  • Page 64 Circuit Descriptions 5-1-3 Internal Block Diagram Internal Block Diagram FLT Driving Smoothing Circuit Circuit Noise 3.3V Rectified 3.3V Rectified Converter Removal VoltageCircuit Smoothing Circuit (SNUBBER) 5V Rectified 5V Rectified Rectified Circuit Smoothing Circuit VoltageCircuit (x2) Motor 8V 1 Port Power TR Control Circuit Line Filter 8V Rectified...
  • Page 65 Circuit Descriptions 5-2 RF 5-2-1 RIC1 (KS1461) KS1461 is combined with KS1452 and KS1453 as bipolar IC developed for DVD SERVO system. Main features include DVD waveform equalizing, CD waveform equalizing, focus error signal generation, 3-beam tracking error signal generation, DPD 1-beam tracking error, defect, envelope, MIRR output, etc. after receiving the pick-up output converted into I/V.
  • Page 66 Circuit Descriptions EQIN REAGCO RFEQO RF EQ Fig. 5-12 The control parameters of DVD EQ 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.
  • Page 67 Circuit Descriptions 5-3 System Control 5-3-1 Outline The main micom peripheral circuit is composed of 16bit Micom (MIC1 ; TMP95C265), 8M EPROM (MIC2 ; M27C801) for Microcode and data save, 256 byte EE-PROM (MIC4 ; KS24C020) for permanent storage of data needed at power off.
  • Page 68 Circuit Descriptions 5-3-3 Waveform Description When micom accesses each device sharing bus, it falls the chip select signal of corresponding chip to (/CS1:MIC3- 22, /CS2:MIC2-22, /DSPCS:DIC1-2, /DVD1CS:ZIC1-208, CSB:SIC1-10) 0 (Low) before trial. So to speak, the bus is used by time-division as shown in Fig 5-14, 5-15, 5-16. Two and more devices can't be accessed simultaneously.
  • Page 69 Circuit Descriptions /CS2 /DSPCS /DVD1CS /CSB Fig. 5-16 Servo Access CH1 : 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) •...
  • Page 70 Circuit Descriptions 5-4 Servo 5-4-1 Outline SERVO system of DVD is divided into Focusing SERVO, Tracking SERVO, SLED Linked SERVO and CLV SERVO (DISC Motor Control SERVO). 1) Focusing SERVO Focuses the optical spot output from object lens onto the disc surface. Maintains a uniform distance between object lens of Pick-up and disc (for surface vibration of disc).
  • Page 71 Circuit Descriptions 5-4-3 Operation 1) FOCUSING SERVO (1) FOCUS INPUT The focus loop is changed from open loop to closed loop, and the triangular waveform moves the object lens up and down (at pin 75 of SIC1 during Focus SERVO ON.) At that time, S curve is input to pin 65 of SIC1. ABAD (pin 39 of RIC1) signal, summing signal of PD A, B, C, D, is generated, and zero cross(2.5V) point occurs when S curve is focused and ABAD signal exceeds a preset,constant value.
  • Page 72 Circuit Descriptions (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.
  • Page 73 Circuit Descriptions 5-5 DVD Data Processor 5-5-1 Outline DIC1(KS1453) performs Sync detection, EFM demodulation and error correction and Spindle motor control (CLV control) after inputting sliced EFM signal of RF signal at disc playback and EFM read clock (PLCK) signal generated from PLL.
  • Page 74 Circuit Descriptions 5-5-3 Waveform Description It measures the timing that data processed in DIC1 at DVD playback. STROBE DACK SDATA all Fig. 5-20 CH1 : STROBE (DIC1-69, CLOCK) • CH2 : REQ (DIC1-70, DATA REQUEST) • CH3 : DACK (DIC1-58, DATA ACKNOWLEDGE) •...
  • Page 75 Circuit Descriptions 5-6 Video 5-6-1 Outline ZIC1(A/V decoder with video encoder) diverges from the 27MHz crystal, then generates VHSYNC and HSYNC. ZIC1(A/V decoder with video encoder) does RGB encoding, copy guard processing and D/A conversion of 8bit video data internally inputted from video decoder block by MIC1(Micom). Video signal converted into analog signal is outputted via amplifier of analog part.
  • Page 76 Circuit Descriptions 5-6-3 Amplifier (VIC1, VIC2 : BA7660) VIC1 and VIC2 are 6dB amplifier. Based on CVBS signal, the final output level must be 2Vpp without 75ohm terminal resitance. Because the level of video encoder output is only 1.1Vpp, the level is adjusted with the special amplifier.
  • Page 77 Circuit Descriptions 5-7 Audio 5-7-1 Outline The four data (Data 0~3) outputted from A/V decoder (ZIC1 ; ZiVA4.1) are supplied to DATA 0 for 2-channel mixed audio output and to DATA 1~3 for Analog audio output (5.1-channel). The audio data (0~3) transmitted from A/V decoder (ZIC1 ; ZiVA4.1) are converted into analog signal via audio D/A converter and outputted via post filter and amplifier.
  • Page 78 Circuit Descriptions 5-7-2 DVD Audio Output Source Data Types : MPEG-1,-2, Dolby Digital, CD-DA, LPCM ZIC2, 3 (LOCAL DRAM) ZIC1 (ZiVA4.1 ; A/V DECODER) HOST or DVD/CD INTERFACE EXTERNAL RECEIVER IEC-958/1937 IEC-958/1937 AUDIO INPUT OUTPUT PROCESS INTERFACE BUFFER DECODER Compressed Data (IEC-958/1937) 2-Channel LPCM, Decoder (MPEG, Dolby Digital),...
  • Page 79 Circuit Descriptions MEMO 5-20...

  • Page 80: Troubleshooting

    6. Troubleshooting...
  • Page 81 Troubleshooting...
  • Page 82 Troubleshooting...
  • Page 83 Troubleshooting...
  • Page 84 Troubleshooting...
  • Page 85 Troubleshooting...
  • Page 86 Troubleshooting...
  • Page 87 Troubleshooting...
  • Page 88 Troubleshooting...
  • Page 89 Troubleshooting 6-10...
  • Page 90 Troubleshooting 6-11...
  • Page 91 Troubleshooting MEMO 6-12...
  • Page 92 7. Exploded View Page 7-1 Cabinet Assembly - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-2 Deck Assembly - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...

  • Page 93: Exploded Views

    Exploded Views 7-1 Cabinet Assembly...
  • Page 94 Exploded Views 7-2 Deck Assembly...
  • Page 95 Exploded Views MEMO...

  • Page 96: Replacement Parts List

    8. Replacement Parts List 1. Mechanical Parts List 2. Electrical Parts List SYMBOL SYMBOL P-NO DESCRIPTION P-NO DESCRIPTION MIC2 TC11321 EPROM MECHANISM SECTION TE13611 CONNECTOR DCN1 TE13621 CONNECTOR TS15901 MECHA ASSY(DVD) PFD01 TE13641 FUSE TE13631 CORD,POWER 102.5 TS16391 PICKUP ASSEMBLY TJ14351 PANEL,FRONT ASSY TJ14361...
  • Page 97 Replacement Parts List MEMO...

  • Page 98: Block Diagrams

    9. Block Diagram DECK ASS'Y Open & DRIC13 (KA3082) Close Open & Close Motor Roulette DRIC3 (KA3082) Motor 5 Disc Roulette Motor Driver MIC4 2K EEPROM FIC1 MIC1 (TMP95C265F) MIC2 8M EPROM (LC86P6232) Remote Control Main Controller Optical Front Controller Pick Up Coaxial Spindle Motor...
  • Page 99 Block Diagram MEMO...
  • Page 100 10. PCB Diagrams 10-1 S.M.P.S. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10-2 10-2 Main - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10-3...
  • Page 101 PCB Diagrams 10-1 S.M.P.S. 10-2...

  • Page 102: Pcb Diagrams

    PCB Diagrams 10-2 Main 10-3...

  • Page 103: Jack

    PCB Diagrams 10-3 Jack 10-4...

  • Page 104: Front

    PCB Diagrams 10-4 Front 10-5...

  • Page 105: Key

    PCB Diagrams 10-5 Key 10-6...

  • Page 106: Motor

    PCB Diagrams 10-6 Deck 10-8 Sensor 10-7 Motor 10-9 Switch 10-7...
  • Page 107 PCB Diagrams MEMO 10-8...

  • Page 108: Wiring Diagram

    11. Wiring Diagram 11-1...
  • Page 109 Wiring Diagram MEMO 11-2...
  • Page 110 12. Schematic Diagrams Block Identification of PCB 12-1 S.M.P.S. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 12-2 12-2 Main-Micom - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 12-3...
  • Page 111 Schematic Diagrams 12-1 S.M.P.S. 12-2...

  • Page 112: Main-Micom

    Schematic Diagrams 12-2 Main-Micom 12-3...

  • Page 113: Servo

    Schematic Diagrams 12-3 Servo 12-4...
  • Page 114 Schematic Diagrams 12-4 RF 12-5...

  • Page 115: Data Processor

    Schematic Diagrams 12-5 Data Processor 12-6...

  • Page 116: Av Decoder

    Schematic Diagrams 12-6 AV Decoder 12-7...

  • Page 117: Video

    Schematic Diagrams 12-7 Video 12-8...

  • Page 118: Audio

    Schematic Diagrams 12-8 Audio 12-9...

  • Page 119: Audio 5.1 Channel

    Schematic Diagrams 12-9 Audio 5.1 Channel 12-10...

  • Page 120: Av Interface

    Schematic Diagrams 12-10 AV Interface 12-11...

  • Page 121: Front-Micom

    Schematic Diagrams 12-11 Front-Micom 12-12...

  • Page 122: Key

    Schematic Diagrams 12-12 Key 12-13...

  • Page 123: Deck

    Schematic Diagrams 12-13 Deck 12-14...

  • Page 124: Motor/Switch/Sensor

    Schematic Diagrams 12-14 Motor/Switch/Sensor 12-15...

  • Page 125: Remote Control

    Schematic Diagrams 12-15 Remote Control 12-16...
  • Page 126 DV-C605U No.9009E Digital Media Products Division, Tokai Copyright © Hitachi, Ltd. 2000. All rights reserved. Printed in Japan (II)

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