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Hitachi DV-P725U Service Manual

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TK
No. 9205E
DV-P725U
SERVICE MANUAL
parts updated 6/12/03
REV
FWD
OPEN / CLOSE
POWER / STANDBY
PHONES
PHONES LEVEL
TOP MENU
MENU
MIN
MAX
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
DVD PLAYER
April
2002
Digital Media Division, Tokai

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Summary of Contents for Hitachi DV-P725U

  • Page 1 No. 9205E DV-P725U SERVICE MANUAL parts updated 6/12/03 OPEN / CLOSE POWER / STANDBY PHONES PHONES LEVEL TOP MENU MENU SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT DVD PLAYER April 2002 Digital Media Division, Tokai...
  • Page 2: Table Of Contents

    CONTENTS SCHEMATIC AND BLOCK DIAGRAMS/ CHAPTER 1 GENERAL INFORMATION CHAPTER 4 CBA’S SPECIFICATIONS......1-1-1 SCHEMATIC DIAGRAMS/CBA’S AND COMPARISON OF MODELS .
  • Page 3: Chapter 1 General Information

    CHAPTER 1 GENERAL INFORMATION SPECIFICATIONS Product type : DVD Player Discs : DVD video Audio CD Video CD Output signal format : NTSC color Frequency response DVD (linear sound) : 20 Hz to 22 kHz (sample rate: 48 kHz) 20 Hz to 44 kHz (sample rate: 96 kHz) CD : 20 Hz to 20 kHz Signal-to-noise ratio (S/N ratio)
  • Page 4: Comparison Of Models

    COMPARISON OF MODELS ← : Same as on left DV-P725U DV-P315U/P313U Appearance Dimensional 435(W) x 75(H) x 216(D) mm 430(W) x 79(H) x 240(D) mm Weight 2.1kg 4.2kg Tray Panel Silver Black Color Front / Button Dark Silver/Silver Black/Black Hot Stamp...
  • Page 5 Features O (DV-P315U) Disc Navigation --- (DV-P313U) ← DVD Zoom x2 / x4 / x16 O / O / --- Program and Random Play of DVD / VCD O / O ← A-B Repeat ← Repeat ← Last Play ← Closed Caption for NTSC DVD ←...
  • Page 6: Laser Beam Safety Precautions

    LASER BEAM SAFETY PRECAUTIONS This DVD player uses a pickup that emits a laser beam. Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin. The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to keep your eyes at least 30cm away from the pickup lens when the diode is turned on.
  • Page 7: Important Safety Precautions

    IMPORTANT SAFETY PRECAUTIONS Product Safety Notice I. Also check areas surrounding repaired locations. J. Be careful that foreign objects (screws, solder Some electrical and mechanical parts have special droplets, etc.) do not remain inside the set. safety-related characteristics which are often not evi- K.
  • Page 8: Safety Check After Servicing

    Safety Check after Servicing Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts, Chassis or Secondary Conductor and wires have been returned to their original posi- tions. Afterwards, do the following tests and confirm the specified values to verify compliance with safety Primary Circuit Terminals standards.
  • Page 9: Standard Notes For Servicing

    STANDARD NOTES FOR SERVICING Circuit Board Indications How to Remove / Install Flat Pack-IC a. The output pin of the 3 pin Regulator ICs is indi- 1. Removal cated as shown. With Hot-Air Flat Pack-IC Desoldering Machine:. (1) Prepare the hot-air flat pack-IC desoldering Top View Bottom View machine, then apply hot air to the Flat Pack-IC...
  • Page 10 With Soldering Iron: (4) Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply (1) Using desoldering braid, remove the solder from all soldering iron to center of the flat pack-IC and heat pins of the flat pack-IC.
  • Page 11: Instructions For Handling Semi-Conductors

    2. Installation Instructions for Handling Semi-conductors (1) Using desoldering braid, remove the solder from the foil of each pin of the flat pack-IC on the CBA Electrostatic breakdown of the semi-conductors may so you can install a replacement flat pack-IC more occur due to a potential difference caused by electro- easily.
  • Page 12: Orerating Controls And Functions

    OPERATING CONTROLS AND FUNCTIONS FRONT PANEL 3 4 5 6 7 OPEN / CLOSE POWER / STANDBY PHONES PHONES LEVEL TOP MENU MENU 36 35 20 30 REMOTE CONTROL 6. SKIP DOWN/REV Button Plays back from the beginning of the current chapter or track.
  • Page 13 DISPLAYS DURING DISPLAY OPERATION Stays on when the A-B repeat function Power on is on. Lights up when a DVD is inserted on the tray. No disc inserted Stays on when the repeat function is on. Tray open Tray closed Loading the Disc Lights up when the inserted disc comes...
  • Page 14 DESCRIPTION-REAR PANEL DIGITAL ANALOG COMPONENT S-VIDEO AUDIO OUT AUDIO OUT VIDEO OUT VIDEO OPTICAL COAXIAL PROGRESSIVE 1. DIGITAL AUDIO OUT JACKS: Use either an optical or coaxial digital cable to connect to a compatible Dolby Digital receiber. Use to connect to a Dolby Digital decoder or DTS decoder. 2.
  • Page 15: Firmware Renewal Mode

    FIRMWARE RENEWAL MODE HOW TO UPDATE THE FIRMWARE VERSION 1. Turn the power on and remove the disc on the tray. 2. To put the DVD player into version up mode, press Fig. d VFD in Programming Mode (Example) [9], [8], [7], [6], and [SEARCH MODE] buttons on the remote control unit in that order.
  • Page 16: Troubleshooting

    TROUBLESHOOTING FLOW CHART NO.1 The power cannot be turned on.(1) Is the fuse normal? Replace the fuse. See FLOW CHART No.3 <The fuse blows out.> Is normal state restored when once unplugged Check for lead or shor-circuiting of primary power cord is plugged again after several seconds. circuit component? (Q1001, Q1003, D1001, D1002, D1004, D1005, D1011, T1001, C1003, C1005, etc.)
  • Page 17 FLOW CHART NO.4 When the output voltage fluctuates. Does the secondary side photo coupler circuit Check the circuit and replace the parts. operate normally? (IC1001, IC1006, D1048, D1015, etc.) Does the primary side photo coupler circuit Check the circuit and replace the parts. operate normally? (IC1001, IC1012, D1024, etc.) Replace IC1001.
  • Page 18 FLOW CHART NO.8 No operation is possible from the infrared remote control. Replace the remoter control receiver or replace the Operation is possible from the DVD, but no remoter control transmitter is necessary. operation is possible from the infrared remote control? Is 5V voltage supplied to the pin(3) terminal of Check EV 5V line.
  • Page 19 FLOW CHART NO.10 PON 5V is not outputted. (PON 12V is possible.) Check the AT 5V line. Is 5V voltage supplied at collector of Q1004? Check for load circuit short-circuiting or leak. Is voltage of 5V sent out from the collector of Q1004? Check the Q1004 periphery circuit.
  • Page 20 FLOW CHART NO.13 PON 1.8V is not outputted. (PC 3.3V(1), (2) is possible) Is 5V voltage supplied at pin(1) of IC1002? Check the secondary circuit, AT 5V line. Check for load circuit short-circuiting of leak. Is voltage of 1.8V sent out from the pin(2) of IC1002? Check the IC1002 periphery circuit.
  • Page 21 FLOW CHART NO.17 The [No Disc] indication. (In case focus servo does not function.) Is the focus control signal outputted to the pin(115) Check the periphery circuit of pins(57, 78, 88, 99, of IC201? 109, 116, 125, 143, 156, 162) of IC201 and power source.
  • Page 22 FLOW CHART NO.20 Picture do not operate normally. Set the disc on the disc tray. Check the main unit. (IC601 periphery circuit.) Are the video signals outputted to each pins of main unit connector CN701? CN701 7PIN CVBS CN701 5PIN CN701 6PIN Check the line between each pins of main unit Are the video signals shown above input into each...
  • Page 23 FLOW CHART NO.21 Picture do not operate normally. Set the disc on the disc tray. Check the main unit. (IC601 periphery circuit.) Are the analog audio interface signals outputted to each pins of main unit connector CN701? CN701 13PIN FL CN701 15PIN FR Are the analog audio interface signals inputted Check the line between each pins of main unit...
  • Page 24: Chapter 2 Disassembly

    CHAPTER 2 DISASSEMBLY CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart REMOVAL REMOVE/*UNHOOK/ This flowchart indicates the disassembly steps to gain LOC. PART Fig. UNLOCK/RELEASE/ Note access to item(s) to be serviced. When reassembling, UNPLUG/DESOLDER follow the steps in reverse order. Bend, route, and Progres- dress the cables as they were originally.
  • Page 25 Reference Notes Tray Panel CAUTION 1: Locking Tabs (L-1), (L-2) and (L-3) are (L-2) fragile. Be careful not to break them. (L-1) 1-1. Connect the wall plug to an AC outlet and press CN2002 (L-1) the OPEN/CLOSE button to open the Tray. 1-2.
  • Page 26 DVD Mecha [10] AV CBA [9] Switch CBA (S-10) (S-8) (S-10) CN1601 (S-11) (S-9) CN1001 Short the three short lands by soldering (L-6) [11] DVD Main CBA Unit View for A Fig. D6 (S-12) Short the three short [12] Rear Panel lands by soldering Slide Pickup Unit...
  • Page 27 HOW TO MANUAL EJECT 1. Remove the Top Case. 2. Insert the eject-bar (length = approximately 80 mm, diameter = approximately 3 mm) into the manual eject hole on the DVD Mecha. Then, press it until the tray is ejected. Top Case Tray Manual...
  • Page 28: Chapter 3 Exploded Views And Parts List

    CHAPTER 3 EXPLODED VIEWS AND PARTS LIST EXPLODED VIEWS Cabinet See Electrical Parts List for parts with this mark. Some Ref. Numbers are not in sequence. 2B24 2L031 2L021 2L021 2L021 2L051 2B22 2B21 2B23 W1602 W1601 DVD Main JK1403 CBA Unit JK1401 JK1201...
  • Page 29: Replacement Parts List

    REPLACEMENT PARTS LIST Mechanical Parts List SYMBOL-NO P-NO DESCRIPTION SYMBOL-NO P-NO DESCRIPTION MECHANISM SECTION TJ15841 FRONT ASSEMBLY TJ15673 TRAY ASSEMBLY TJ15482 JOG SHUTTLE KEY TJ15483 CROSS BUTTON TJ15675 FOOT TJ15676 MAIN CHASSIS TJ15677 TOP COVER SILVER TJ15484 REAR PANEL TJ15485 KNOB VOLUME # AC1001 TE14761...
  • Page 30: Electrical Parts List

    Note: Although some parts in the schematic diagrams have different names from those in the parts list, Electrical Parts List there is no problem in replacing parts. SYMBOL-NO P-NO DESCRIPTION SYMBOL-NO P-NO DESCRIPTION Q1001 TC12291 TRANSISTOR 2SK3374 RESISTOR Q1002 TC10778 TRANSISTOR KTC3199(GR) Q1003 TC10778...
  • Page 31 SYMBOL-NO P-NO DESCRIPTION SYMBOL-NO P-NO DESCRIPTION SW2203 TE11957 TACT SWITCH SW2204 TE11957 TACT SWITCH SW2205 TE11957 TACT SWITCH SW2206 TE11957 TACT SWITCH SW2207 TE11957 TACT SWITCH SW2208 TE11957 TACT SWITCH SW2209 TE11957 TACT SWITCH SW2210 TE11957 TACT SWITCH W1001 TE14841 CABLE (26P) W1601 TE14851...
  • Page 32: Chapter 4 Schematic And Block Diagrams/Cba's

    CHAPTER 4 SCHEMATIC AND BLOCK DIAGRAMS/CBA’S SCHEMATIC DIAGRAMS / CBA’S AND TEST POINTS Standard Notes Notes: 1. Do not use the part number shown on these draw- WARNING ings for ordering. The correct part number is shown Many electrical and mechanical parts in this chassis in the parts list, and may be slightly different or have special characteristics.
  • Page 33 LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES: 1. CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE. ATTENTION: POUR UNE PROTECTION CONTINUE LES RISQES D'INCELE N'UTILISER QUE DES FUSIBLE DE MEMO TYPE.
  • Page 34: Wiring Diagram

    Wiring Diagram CN2002 W2201 CN2201 VIDEO-Y VIDEO-U VIDEO-V VIDEO AUDIO AUDIO DIGITAL S-VIDEO OPTICAL AC CORD HEADPHONE KEY-5 OUT(L) OUT(R) AUDIO OUT AUDIO OUT JACK KEY-6 KEY-7 FUNCTION CBA CN2701 W2701 KEY-8 P-ON+5V PON+5V KEY-4 AUDIO-R KEY-3 AV CBA AUDIO-L KEY-1 KEY-2 HEADPHONE CBA...
  • Page 35: Dvd Main 1/4 Schematic Diagram

    DVD Main 1/4 Schematic Diagram 4-1-4...
  • Page 36: Dvd Main 2/4 Schematic Diagram

    DVD Main 2/4 Schematic Diagram 4-1-5...
  • Page 37: Dvd Main 3/4 Schematic Diagram

    DVD Main 3/4 Schematic Diagram 4-1-6...
  • Page 38: Dvd Main 4/4 Schematic Diagram

    DVD Main 4/4 Schematic Diagram 4-1-7...
  • Page 39: Av 1/3 Schematic Diagram

    AV 1/3 Schematic Diagram CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, CAUTION ! NOTE : REPLACE ONLY WITH THE SAME TYPE FUSE. Fixed voltage power supply circuit is used in this unit. The voltage for parts in hot circuit is measured ATTENTION : POUR UNE PROTECTION CONTINUE LES RISQES If Main Fuse (F1001) is blown, check to see that all components in the power supply circuit using hot GND as a common terminal.
  • Page 40: Av 2/3 & Headphone Schematic Diagram

    AV 2/3 & Headphone Schematic Diagram 4-1-9...
  • Page 41: Waveforms

    WAVEFORM Pin 5 of CN1601 Pin 15 of CN1601 VIDEO-Y 0.2V 20usec AUDIO-R 0.5msec Pin 7 of CN1601 Pin 18 of CN1601 VIDEO-CVBS 0.5V 20usec SPDIF 0.2usec Pin 9 of CN1601 NOTE: Input CD: 1kHz PLAY (WF4~WF6) DVD: POWER ON (STOP) MODE (WF1~WF3) VIDEO-C 0.2V...
  • Page 42: Av 3/3, Function & Switch Schematic Diagram

    AV 3/3, Function & Switch Schematic Diagram FL2001 MATRIX CHART STANDBY REPEAT STANDBY TITLE CHP. TRK. REPEAT TITLE CHP. TRK. 4-1-11...
  • Page 43: Progressive Schematic Diagram

    Progressive Schematic Diagram 4-1-12...
  • Page 44: Function Cba Top View

    Function CBA Top View Headphone CBA Top View Headphone CBA Bottom View Function CBA Bottom View 4-1-13...
  • Page 45: Av Cba Top View

    AV CBA Top View CAUTION ! Switching power supply circuit is used in this unit. If Main Fuse (F1001) is blown, check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply.
  • Page 46: Av Cba Bottom View

    Switch CBA Top View Switch CBA Bottom View AV CBA Bottom View PIN 5 OF PIN 7 OF PIN 9 OF PIN 13 OF PIN 15 OF PIN 18 OF CN1601 CN1601 CN1601 CN1601 CN1601 CN1601 CAUTION ! Switching power supply circuit is used in this unit. If Main Fuse (F1001) is blown, check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply.
  • Page 47: Block Diagrams

    BLOCK DIAGRAMS System Control Block Diagram AV CBA IC2001 IC601 (FRONT PANEL CONTROL) (DVD HOST PROCESSOR) FL2001 CN501 CN1001 IC301 TFWD (FRONT END PROCESSOR) VFD-STB FP-STB FP-STB TREV GRID VFD-DIN FP-DIN FP-DIN VFD-DOUT FP-DOUT FP-DOUT TFWD TOUT FP-CLK TFWD VFD-CLK FP-CLK TREV REMOTE...
  • Page 48: Rf Signal Process/Servo Block Diagram

    RF Signal Process/Servo Block Diagram DATA(VIDEO/AUDIO) SIGNAL FOCUS SERVO SIGNAL TRACKING SERVO SIGNAL SLIDE SERVO SIGNAL DISK SERVO SIGNAL IC101 (RF SIGNAL PROCESS) PICK-UP UNIT DVD MAIN CBA UNIT HOLD TESTSG CN101 FROM/TO DVD SIGNAL PROCESS BLOCK DIAGRAM NARF C 10 DETECTOR BDO DET INPUT...
  • Page 49: Dvd Signal Process Block Diagram

    DVD Signal Process Block Diagram DATA(VIDEO/AUDIO) SIGNAL DVD MAIN CBA UNIT IC201 (DVD SIGNAL PROCESS) PARA0 PARA1 PARA2 DATA VIDEO/AUDIO PARA3 SLICER PARA0-PARA7 TO VIDEO DEMODULATOR FROM/TO RF SIGNAL INTERFACE NARF PARA4 BLOCK DIAGRAM PROCESS/SERVO PARA5 BLOCK DIAGRAM TESTSG PARA6 PARA7 MEMORY MANAGER...
  • Page 50: Video Block Diagram

    Video Block Diagram DATA(VIDEO) SIGNAL DATA(AUDIO) SIGNAL VIDEO SIGNAL DATA(VIDEO/AUDIO) SIGNAL IC601 (DVD HOST PROCESSOR) CACHE FROM DVD PARA0 SUBSYSTEM SIGNAL PROCESS PARA0-PARA7 BLOCK DIAGRAM PARA7 CENTRAL FRONT-END PCM-BCK COMMAND & LINK PCM-DATA0 PORT INTERFACE AUDIO PCM-SCLK FROM/TO PROGRESSIVE DECODER BLOCK DIAGRAM PCM-LRCLK TO AUDIO...
  • Page 51: Progressive Block Diagram

    Progressive Block Diagram DATA(VIDEO) SIGNAL VIDEO SIGNAL IC1803 IC1801 (DE-INTERLACER) (PROGRESSIVE ENCODER) CN1801 TEST PATT.GENE. 3-10 YC(0-7) FORMATTER DE-INTERLACER FORMATTER /DELAY /GAMMA CORRECTOR FROM/TO VIDEO BLOCK CLK27MHz PLL/CLOCK GENE DIAGRAM CN702 H SYNC 4:2:2 4:2:2 H SYNC SYNC V SYNC 4:4:4 4:4:4 /FERS...
  • Page 52: Audio Block Diagram

    Audio Block Diagram DATA(AUDIO) SIGNAL AUDIO SIGNAL IC1204 FIBER OPTIC TRANS. MODULE W F 6 JK1201 CN701 CN1601 Q1351 SPDIF DIGITAL AUDIO OUT IC801 (AUDIO DAC) IC1201 (AMP) W F 4 SPDIF CN701 CN1601 4X/8X L-CH PCM-BCK AUDIO-L ENPHANCED LPF+AMP AUDIO-L OVERSAMPLING PCM-DATA0...
  • Page 53: Power Supply Block Diagram

    Power Supply Block Diagram CAUTION ! CAUTION Switching power supply circuit is used in this unit. FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, NOTE : If Main Fuse (F1001) is blown, check to see that all components in the REPLACE ONLY WITH THE SAME TYPE FUSE. The voltage for parts in hot circuit is measured using power supply circuit are not defective before you connect the AC plug to ATTENTION : POUR UNE PROTECTION CONTINUE LES RISQES...
  • Page 54: System Control Timing Charts

    SYSTEM CONTROL TIMING CHARTS Tray close ~ Play / Play ~ Tray open Eject key on Eject key on Tray close Play Tray open Disc Rotation LSW2 LSW1 4.4s (TL123) 700ms 2.0s 1.2s ( TP122 ) 1.7s ( TL122 ) 4-3-1...
  • Page 55: Ic Pin Function Descriptions

    IC PIN FUNCTION DESCRIPTIONS IC2001 [ PT6315-S (-TP) ] Signal In/Out Name Function Name Clock Input Serial Interface Strobe Key Data 1 Input Key Data 2 Input Power Supply Segment Output / Key a / Key-1 Source-1 Segment Output / Key b / Key-2 Source-2 Segment Output / Key...
  • Page 56: Lead Identifications

    LEAD IDENTIFICATIONS 2SK3374 2SC2785 (H) 2SA1015-Y (TPE2) KTC3199 (GR) KTA1266 (Y) KRA110M 2SC2236-Y-TPE6,C KRC110M-AT BA1L3Z-T BA1L3Z (P) KTC3205 (Y) G D S E C B E C B NJM4558D KIA431-AT PT6315-S 2SC3422 KIA4558P PQ018EF01SZ AN1431-(NSC) PT6315-S(-TP) BH3544F-E2 E C B R A K 0C-0805T-002 GP1FA512TZV...
  • Page 57 No. 9205E Digital Media Division, Tokai DV-P725U...

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