Hitachi DV-P505U Service Manual
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Hitachi DV-P505U Service Manual

Dvd player
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SERVICE MANUAL
Please carefully read this guide before using the device. The Hitachi DVD Player has been designed to
prevent fire, electrical shock, injury, or harmful radiation. It has been legally fabricated in accordance with
ADVICE
the Electrical Appliances Act. Therefore, when using the device, please follow advice in this service
guide to keep it safe to use.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
April 2000
TK
DV-P505U
DV-P505E
DV-P505E(UK)
DV-P505U(PX)
1. In brief
This is a device for DVD playback.
This device is to be used by connecting it to the
video input terminal of a TV set.
2. Features
6
6

DVD PLAYER

Digital Media Products Division, Tokai
NO. 9002E
Disc navigation system facilitates program
search.
Speedy operation by 2x speed drive.

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Summary of Contents for Hitachi DV-P505U

  • Page 1: Dvd Player

    SERVICE MANUAL DV-P505E(UK) DV-P505U(PX) Please carefully read this guide before using the device. The Hitachi DVD Player has been designed to prevent fire, electrical shock, injury, or harmful radiation. It has been legally fabricated in accordance with ADVICE the Electrical Appliances Act. Therefore, when using the device, please follow advice in this service guide to keep it safe to use.
  • Page 3 PRECAUTIONS FOR SAFETY (Please follow.) Before undertaking repair work, please read through this [Precautions for safety]. The following points should be observed in order to prevent accidents from happening and to ensure the safety of the device. Degrees of danger or damage that can be caused by faulty operation are indicated by the following marks: Under this mark, there is “Possible death or serious injury”.

  • Page 5: Table Of Contents

    Hitachi DV-P505U/U(PX) ........

  • Page 7: System Introduction

    Specification General Model ......................DV-P505U/U(PX) Operating laser ..Semi-conductor laser : Wave length 650nm(DVD) / 780nm(CD,VCD) Power supply ................DV-P505U : AC120V, 60Hz ................DV-P505U (PX) : AC110-240V, 50/60 Hz Power consumption ......................24W Weight .......................... 3.7 kg Overall size ................434 (W) x 284 (D) x 91 (H) mm Allowable operating temperature ..............

  • Page 8: Hitachi Dv-P505E/(Uk)

    Hitachi DV-P505E/E(UK) Specification General Model ......................DV-P505E/E(UK) Operating laser ..Semi-conductor laser : Wave length 650nm(DVD) / 780nm(CD,VCD) Power supply ................DV-P505E : AC230V, 50Hz Power consumption ......................24W Weight ..........................3.7 Kg Overall size ................434 (W) x 284 (D) x 91 (H) mm Allowable operating temperature ..............

  • Page 9: System Outlook

    System Outlook FRONT <Display> Lights if the stop position is in memory. Indicates the play status. Indicates the Audio Type being played. TRACK REPEAT ALL A Linear PCM MPEG Audio LAST TITLE CHAPTER RANDOM Dolby Digital VIRTUAL Video CD ANGLE PROGRAM PBC TOTAL CD DVD...

  • Page 10: Rear Panel

    Rear Panel DV-P505E / E(UK) 335A131 DV-P505U /U(PX) 335A132 Chapter 1...

  • Page 11: Description Of Adopted New Technology

    Description of adopted new technology Digital signal circuit Data Flow The following figure shows the block diagram of digital signal circuit. F LAS H M E M O R Y B U FF E R R AM D V D R O M 8M b it 16M b it x 2 S D R AM D R IV E...

  • Page 12: Video Circuit (Dec Substrate)

    Functions of each IC Operating Functions Voltage IC1201 A/V PROCESSOR Execute data transfer, presetting and control of each IC. 3.6V Execute decompression (decoding) of data compressed by MPEG, AC3, DTS. IC1601 FLASH MEMORY Store memory for A/V processor’s RISC software IC1202~IC1203 Memory used for decompression (decoding) of data 3.3V...
  • Page 13 Filter circuit eliminates high frequency components of analog video signals output from video encoder. Afterwards in S2 processor circuit DC voltage is superposed on C signals then output 3 types of video signals: composite video signals, Y/C(S2) video signals and YP /RGB to RJK substrate via 17P connector (PG2201).
  • Page 14 Under control of output voltage by DAC pins (25, 33, 34 pins), it output 3 kinds of ANALOG VIDEO SIGNALS: ANALOG COMPOSITE VIDEO SIGNALS (CVBS/32 pin), output voltage 1.0Vpp. ANALOG S VIDEO by ANALOG LUMINANCE SINGLES (Y/27 pin), output voltage 1.0Vpp and ANALOG CHROMA SIGNALS (C/26 pin), BURST part output voltage 286mVpp.

  • Page 15: Video Output Circuit (Vdo Substrate)

    Video Output Circuit (VDO substrate) Analog composite video signals (CVBS), analog luminace signals (Y), analog chroma signals (C) and analog component signals (YP are sent from DEC substrate to VDO substrate by passing through 17P R/RGB) connector (PG2201~PG1302). From VDO substrate, CVBS signals are output from output terminal J1307 and Y/C signals are output from output terminal J1302.
  • Page 16 C1561 R1533 R1527 R1529 R1531 C1567 IC1508 C1571 C1559 C1563 Filter 1 Filter 2 Filter 3 This 3-section filter constitutes a low pass filter of overall cutoff frequency of 44kHz. Audio signals after low pass filter is amplified by IC1510 by about 6dB and output to audio out1 and audio out2. Here, among audio signals, FL signals are input at pin 3 of IC1508 and output from pin 1, then input to pin 2 of IC1510 then output from pin 1.

  • Page 17: Audio Circuit

    AUDIO CIRCUIT Chapter 1...

  • Page 18: Front (Fsw) Substrate Circuit

    FRONT (FSW) SUBSTRATE CIRCUIT FL MICOM (IC1701) It performs communications with IC 1201 ( pins 5, 6, 8, 9 ), including the main frame key, FL tube (IC1702) drive. In addition, it works also in standby mode. INCLUSION OF MAIN FRAME KEY Input is done to FL MICOM at pins 10~13 for operation of S1701 ~ S1709 of mainframe key.

  • Page 19: Clock Circuits

    CLOCK CIRCUITS 27MHz X'TAL (X1201) Block diagram for 27 MHz clock circuit is shown in Fig. 5-8-1. When power is supplied to 27 MHz X'TAL, it generates 27MHz clock and input it to A/V processor (IC1201), video encoder (IC2201). A/V PROCESSOR The A/V processor uses it as CLOCK PCLK2X (input at pins 117) of video interface signal and output digital video stream synchronized to PCLK2X from 8bit video data bus VDATA[7:0] (output at pins 106, 107, 108, 109, 110, 113, 114, 115 )
  • Page 20 Sampling frequency: 96kHz (for DVD) DA-XCK 384*fs=36.864MHz TBCK DA-XCK/8=4.608MHz TBCK/48=96kHz=fs Chapter 1...
  • Page 21 Chapter 1...

  • Page 22: Troubleshooting

    Troubleshooting VIDEO CIRCUIT N O I M A G E A R E S I G N A L S C H E C K S I G N A L O U T P U T F R O M V I D E O C A B L E / M O N I T O R O U T P U T T E R M I N A L ? A R E S I G N A L S...

  • Page 23: Audio Circuit

    AUDIO CIRCUIT N O S O U N D B R E A K D O W N I S T H E R E B E F O R E I C 1 2 0 1 A N I M A G E ? Y e s A R E I C 1 5 0 1 ARE IC1504 pin 2 +5V...
  • Page 24 DV-P505 SERVICE PARTS LIST SYMBOL P-NO DESCRIPTION MECHANISM SECTION TS15611 POWER UNIT TE13411 CONNECTOR TE13421 CONNECTOR TE13501 CONNECTOR [E,UK] TE13431 CONNECTOR TE13441 CONNECTOR TE13451 CONNECTOR TE13561 CONNECTOR [E,UK] TE13461 FUSE UQ22621 MECHA ASSY(DVD) TA14171 RESISTOR FUSIBLE (R34) TE13531 CORD,POWER TE13541 CORD,POWER TE13551 CORD,POWER...
  • Page 25 Chapter 1...

  • Page 26: About System Reset Function

    About System Reset Function The player can not work normaily with non-standard discs. If you encounter the abnormal status , please press STOP button once to stop it. If it can’t stop normaily, please press POWER/STANDBY button. If the status is not changed in about 20 seconds after pressing POWER/STANDBY button then just press LAST button and ENTER button concurrently on the front panel to reset the system.

  • Page 27: Removal And Replacement

    Chapter 2 Removal and Replacement This chapter contains step-by-step procedures on how to disassemble the consumer product for maintenance and troubleshooting. To disassemble the computer, you need the following tools: Wrist grounding strap and conductive mat for preventing electrostatic discharge Flat-bladed screwdriver Phillips screwdriver Tweezers...

  • Page 28: General Information

    General Information Before You Begin Before proceeding with the disassembly procedure, make sure that you do the following: 1. Turn off the power to the system and all peripherals. 2. Unplug the AC adapter and all power and signal cables from the system. Chapter 2...

  • Page 29: Disassembly Procedure Flowchart

    Disassembly Procedure Flowchart The flowchart on the succeeding page gives you a graphic representation on the entire disassembly sequence and instructs you on the components that need to be removed during servicing. For example, if you want to remove the system board, you must first remove the keyboard, then disassemble the inside assembly frame in that order.

  • Page 30: Disassembly Procedure

    Disassembly Procedure Removing the Top Cover 1. Remove two screws from each side of the machine and three screws from the rear side. 2. Use your hands to pull out the two sides of the top cover. 3. First, lift the top cover up lightly to release it from the front panel clicks, and then lift it up and move it away. Removing the Foot Stand 1.

  • Page 31: Removing The Front Panel

    Removing the Front Panel 1. Disconnect the three cables from the MPEG control board. 2. Disconnect one cable from the power supply board. 3. Turn the machine over to remove the screw at the bottom of the front panel. 4. There is a plastic screw at the bottom side of the machine, use a screwdriver to slide the DVD-ROM tray out by turning the screw clockwise.

  • Page 32: Removing The Mpeg Control Board

    6. Detach the clicks on the bottom side and two sides of the machine. 7. Pull the front panel out slightly. Removing the MPEG Control Board 1. Disconnect the five cables and remove the four screws from the MPEG control board as shown below. 2.

  • Page 33: Removing The Power Supply Board

    Removing the Power Supply Board 1. Disconnect the two cables and three screws from the power supply board. 2. Remove the two screws of the power socket on the rear panel of the machine. 3. Slightly lift up the power supply board to remove it from the machine. . Removing the DVD-ROM Drive 1.

  • Page 34: Removing The Outlet Board

    3. Remove the four screws to detach the kitting part from top of the DVD-ROM drive. 4. Remove the four screws to detach the DVD-ROM shield and two EMI shields from the bottom of the DVD-ROM drive. Removing the Outlet Board 1.

  • Page 35: Removing The Front Panel Control Boards

    Removing the Front Panel Control Boards 1. Remove the five screws from the front panel control board (FSW board). 2. Remove the three screws from the microphone volume control board (MVR board). 3. Slightly lift up the front panel control boards then separate the two boards by detaching the connection connector as shown below.

  • Page 36: Connector Location

    Connector Location Chapter 2...
  • Page 37 Chapter 2...
  • Page 38 Chapter 2...

  • Page 39: Appendix A Schematics

    Appendix A Schematics Appendix A...
  • Page 40 L D 0 S R N 4 7 R A 1 2 0 9 L D 1 S R N 4 7 R A 1 2 0 8 L D 3 L D 2 L D 4 L D 2 L D 3 L D 5 L D 1...
  • Page 41 R A 1 2 1 0 DMA[0..11] D M A 0 M A 0 D M A 1 M A 1 D M A 2 M A 2 D M A 3 M A 3 3 V 3 3 V 3 3 V 3 3 V 3 S R N 4 7...
  • Page 42 R 1 1 0 1 H R S T D R S T & P G 1 101 H R S T D R S T 4 7 R 3 R 1 1 0 2 D D 1 5 D D 0 H W R D W R D D 1 4...
  • Page 43 I C 1 6 0 5 C S T B Y E X TRST &% E X TRST C 1 6 0 5 S O H C 1 4 - 1 S C D 1 U D 1 6 0 1 R 1 6 0 9 1 N 4 1 4 8 1 0 K R 3...
  • Page 44 S C D 1 U 4 7 0 R 5 R 2 2 0 6 S T B Y +5VV Q 2 2 01 + 8 V A L 2 2 01 4 7 0 R 5 R 2 2 0 7 E 2 2 0 U 1 6 V C 2 2 1 2 '93( 21/<...
  • Page 45 I C 1 5 0 4 P Q 2 0 W Z 5 1 I C 1 5 0 1 T W S - 2 M L 2 & M L 2 L R C I N ML/IIS T S D 2 M C - 0 T S D 2 D I N...
  • Page 46 + 5 V A U M I C _ S W Q 1 4 02 M I C _ S W D T A 1 2 4 E K A L 3 213 B L M 11A601S A O L K A O L P G 2 403 L 3 214...
  • Page 47 '(&!5-. S T B Y S T B Y P G 1 5 02 S T B Y 32:(5 I C 1 6 0 6 L A 4 &$ L A 4 V C C L A 5 W R 0 A M U T E &$ L A 5...
  • Page 48 C 1 5 8 1 S C 5 6 P 5 0 V 5 J N A 8 V B R L o u t |LINK |2.SCH NTMT C 3 5 0 1 |3.SCH A 8 V R 3 5 3 1 R 3 5 0 1 |4.SCH R 1 5 4 3...
  • Page 49 C 2 5 0 3 S C 5 6 P 5 0 V 5 J N NTMT A 8 V R 1 5 5 5 A 8 V 3 6 K R 5 C 1 5 9 4 C 2 5 0 2 E 1 0 0 U 1 6 V - 1 E 1 0 0 U 1 6 V - 1 B R - L...
  • Page 50 G N D P A D G N D P A D G 1 0 G 1 1 G 1 2 G 1 3 G N D P A D P G 1 3 0 1 + 5 V D C 1 3 7 4 A 8 V B R S W...
  • Page 51 G 2 5 G 2 7 R 3 5 1 9 R 3 5 2 7 J 1 3 0 4 D M - L P G 1 3 8 1 2 7 0 R 5 2 7 0 R 5 DOWN_MIX-L D M - L C 1 3 2 3...
  • Page 52 MVR BOARD V R - G N D G N D P A D P G 1 7 6 4 G N D P A D S 1 7 6 1 P W S W P W S W S T B L E D P W R L E D S K H U B B 3 4 2 0 - H T R 1 7 2 6...
  • Page 53 - 2 0 V G N D P A D G 4 3 G 4 1 C N 1 7 0 2 L 1 7 0 1 R 1 7 9 0 G 4 2 C O I L - 1 0 0 U H - 3 U 5 6 K R 5 A C 1 C 1 7 0 5...
  • Page 54 |LINK R 3 3 0 1 J 1 3 0 7 |2.SCH NTMT G N D P A D S C D 0 1 U 5 0 V 5 M X C 3 3 1 0 G N D P A D G 1 0 6 8 R 5 F G N D P A D...
  • Page 55 P G 1 3 6 2 T L 1 3 9 0 G N D P A D J S T - C O N 4 - 4 P G 1 3 6 1 + 5 V + 1 2 V T L 1 3 6 1 + 1 2 V G N D P A D...
  • Page 58 DV-P505U TK No. 9002E Digital Media Products Division, Tokai DV-P505E DV-P505E(UK) DV-P505U(PX) Copylight© Hitachi, Ltd. 2000. All rights reserved. Printed in TAIWAN...

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