LG RH4820W Manuals

Table of Contents

• 3

  Section 1 Summary

  • 3

    Table of Contents
  • 4

    New Functions of Hdd/DVD-Recorder
  • 5

    Product Safety Servicing Guidelines for Video Products
  • 6

    Servicing Precautions
    • 6

      General Servicing Precautions
    • 6

      Insulation Checking Prodedure
    • 6

      Electrostatically Sensitive Devices
  • 7

    Service Information for Eeprom IC Setting
  • 8

    Specifications

• 9

  Section 2 Cabinet & Main Chassis

  • 10

    Exploded Views
    • 10

      Cabinet and Main Frame Section
    • 11

      Deck Mechanism Section(Rl-01A)
    • 12

      Packing Accessory Section

• 13

  Section 3 Electrical

  • 14

    Electrical Troubleshooting Guide

    • 14

      Power ( Smps ) Circuit (Part 1)
    • 15

      Power ( Smps ) Circuit (Part 2)
    • 16

      System Circuit
    • 16

      Disc Not Recognized
    • 17

      When Playing Disc ,No Audio Output
    • 17

      No Optical / Digital Output
    • 18

      No Tuner Audio Output
    • 20

      No External Input 1 Audio
    • 21

      No External Input 2 Audio
    • 22

      No External Input 3 Audio
    • 22

      No External Input 4 Audio
    • 23

      No Rgb/ Component Video Signal When Playing Disc
    • 24

      No Composite/S-Video Signal When Playing Disc
    • 25

      No Tv , External Input Video Signal
    • 26

      No DV( Ieee 1394 ) Input (Video/Audio) Signal

  • 14

    Hdr Part

  • 14

    Section

  • 27

    Block Diagrams

    • 27

      Overall Block Diagram
    • 28

      In/Out Block Diagram
    • 29

      Video Block Diagram
    • 30

      Video Sw Path Block Diagram
    • 31

      Audio Block Diagram
    • 32

      Audio Sw Path Block Diagram
    • 33

      FLD / Μ-Com BLOCK DIAGRAM
    • 34

      Power : Main Board Block Diagram
    • 35

      Power : I/O Board Block Diagram
    • 36

      Layout Connection Block Diagram
    • 37

      Smps Block Diagram (Part 1)
    • 38

      Smps Block Diagram (Part 2)

  • 39

    Circuit Diagrams

    • 39

      Power Circuit Diagram
    • 40

      E5 Bga, Power, Uart2 Circuit Diagram
    • 41

      Ddr Sdram, Flash Circuit Diagram
    • 42

      Rst, Control/Status Reg, Atapi, Host Cpld, Latch Circuit Diagram
    • 43

      4, Ethernet Connector Circuit Diagram
    • 44

      Video In/Out Circuit Diagram
    • 45

      Audio In/Out Circuit Diagram
    • 46

      I/O Micom Circuit Diagram
    • 47

      Tuner, Video In/Out Circuit Diagram
    • 48

      Front Circuit Diagram
    • 49

      Onspec 3 in 1 Memory Card & DV Avin Circuit Diagram
    • 50

      Waveforms
    • 51

      Circuit Voltage Chart

  • 54

    Printed Circuit Diagrams

    • 54

      Main P.C.board(Top Side)
    • 55

      Main P.C.board(Bottom Side)
    • 56

      I/O P.C.board
    • 56

      Jack P.C.board
    • 57

      Front P.C.board
    • 57

      Key P.C.board
    • 58

      Power P.C.board

  • 59

    Electrical Troubleshooting Guide

  • 59

    Rl-01A Loader Part

  • 73

    Block Diagrams & Description

    • 73

      Overall Block Diagram
    • 74

      Major IC Internal Block Diagram and Pin Description
    • 75

      Block Diagram
    • 79

      Major IC Internal Block Diagram and Pin Description
    • 88

      Ic302(Upd76F0047):Micom

  • 92

    Waveforms

    • 92

      Power & Reset Signal
    • 92

      Main Clock1 for Ic202 (16.9Mhz)
    • 93

      Main Clock2 for Ic302 (20Mhz)
    • 93

      Sdram Clock
    • 94

      Tray Open/Close Signal 1
    • 94

      Tray Open/Close Signal 2
    • 95

      Sled Move Signal 1
    • 95

      Sled Move Signal 2
    • 96

      Focus Search Signal
    • 96

      Laser Turn On Signal
    • 97

      Disc Type Judgement Waveform (CD Series)
    • 97

      Disc Type Judgement Waveform (CD&CD-R)
    • 98

      Disc Type Judgement Waveform (CD-Rw)
    • 98

      Disc Type Judgement Waveform (DVD Series)
    • 99

      Disc Type Judgement Waveform (Dvd_Single&R)
    • 99

      Disc Type Judgement Waveform (DVD
    • 100

      Disc Type Judgement Waveform (Dvdrw)
    • 100

      Spindle Waveform1
    • 101

      Spindle Waveform2
    • 101

      Focus On Signal(CD)
    • 102

      Focus On Signal(DVD)
    • 103

      Focus On Signal (DVD)
    • 103

      Track Off Signal(CD)
    • 104

      Track Off Signal(DVD)
    • 104

      Tilt Driver Signal(Disc Reading)
    • 105

      Rf Waveform(DVD)
    • 105

      Rf Waveform(CD)
    • 106

      Wobble(DVD-R/Rw)_Reading
    • 106

      Wobble(DVD+R/Rw)_Reading&Writing =>X1 Speed
    • 107

      Ld Enable(DVD)
    • 107

      Ld Enable(CD)
    • 108

      Laser Power(Reading)_Dvd+Rw
    • 108

      Laser Power(Erase)_Dvd+Rw
    • 109

      Laser Power(Writing)_Initial State
    • 109

      Laser Power(Writing)_Processing

  • 111

    Circuit Diagrams

    • 111

      Rf Circuit Diagram
    • 112

      Dsp Circuit Diagram
    • 113

      Μ-Com CIRCUIT DIAGRAM

  • 114

    Printed Circuit Diagrams

    • 114

      Main P.C.board(Top Side)