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Hitachi C15 Lc880snt Service Manual

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    							SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
    Liquid Crystal Display Television/Monitor
    July 2005
     Digital Media Systems Group, Hitachi  Asia Ltd. Caution
    Be sure to read this manual before servicing. To assure safety from fire, electric shock, injury, harmful radiation
    and materials, various measures are provided in this Hitachi liquid crystal television/monitor.
    Be sure to read the cautionary items described in the manual to maintain safety before servicing. Service Warning
    1.The LCD Panel Module is made of glass. When handling broken LCD Panel Module, take special care not to be injured.
    2.Replacement work should only start after the LCD Panel Module and the AC/DC Power Supply has become sufficiently cool.
    3.Take special care of the LCD display panel and do not damage its surface.
    4.Do not touch the LCD Panel Module with your bare hands and protect its surface from stains.
    5.It is recommended to use clean soft gloves during servicing in order to protect the LCD display panel and the service personnel himself. Contents
    (15
    ” model) (20
    ” model)
    * SAFETY NOTICE...................................................2
    * DISPLAY MODES..................................................2
    * SPECIFICATIONS...................................................3
    * LOCATION OF CONTROLS......................................4
    * CONNECTIONS......................................................7
    * FACTORY SETTTINGS...........................................10
    * TROUBLESHOOTING..............................................11
    * SCHEMATIC DIAGRAMS.............................................12 *
    PRINTED CIRCUIT BOARD........................................21
    * BLOCK DIAGRAM...............................................27
    * WIRING DIAGRAM.............................................28
    * EXPLODED VIEW & MECHANICAL PARTS LIST..........29
    * INFORMATION OF ICS...............................................31 
    						
    							- 2 -*
    Modes, which are not listed in the above table, may not be supported. For an optimal picture it is
    recommended to choose a mode listed in the table.
    * For 15 ”model, there are 3 types of incoming display modes compatible with Windows as shown
    in the tables above.
    * For 20 ”model, there are 2 types of incoming display modes compatible with Windows as shown
    in the table above.
    * Sometimes, the image may be disrupted due to the frequency standard from the VGA card.
    However, this is not an error. You may improve this situation by activating the automatic adjustment
    or by manually changing the phase and the clock settings in the menu.
    * If you switch off the TV/monitor, interference lines may occur on your screen. Please note that
    this is normal.
    * To extend the service life of the product, we recommend that you use your computer ’s power
    management function. DISPLAY MODESSAFETY NOTICE
    Maintenance and repair of this LCD TV/monitor should be done by qualified service personnel only.
    Critical parts that have special safety characteristics are identified by a   in the replacement parts
    list. Use of any substitute replacement part that does not have the same safety characteristics as
    the recommended replacement part in the parts list might create shock, fire and / or other hazards.
    Read and comply with all caution and safety related notes on or inside the LCD/monitor cabinet, the
    printed circuit boards or the LCD Panel Module. Please note the following safety symbols indicated
    below.
    TO REDUCE THE RISK OF ELECTRIC SHOCK,
    DO NOT REMOVE COVER.
    NO USER-SERVICEABLE PARTS INSIDE.
    REFER SERVICING TO QUALIFIED SERVICE
    PERSONNEL.RISK OF ELECTRIC
    SHOCK DO NOT OPEN
    CAUTION This symbol indicates 
    “dangerous
    voltage ” inside the product that
    presents a risk of electric shock or
    personal injury. This symbol indicates
    important instructions
    accompanying the
    product.
    15 ” Incoming display mode (input)
    640 x 480
    800 x 600
    1024 x 768 Resolution
    Horizontal
    Frequency (KHz) 31.47 (N)
    37.88 (P)
    48.36 (N) Vertical
    Frequency (Hz) 60.00 (N)
    60.32 (P)
    60.00 (N) Pixel Frequency
    (MHz)25.18
    40.00
    65.00 Comment
    DOS
    VESA
    VESA 20
    ” Incoming display mode (input)
    640 x 480
    800 x 600
    Resolution
    Horizontal
    Frequency (KHz) 31.47 (N)
    37.88 (P) Vertical
    Frequency (Hz) 60.00 (N)
    60.32 (P) Pixel Frequency
    (MHz)25.18
    40.00 Comment
    DOS
    VESA 
    						
    							- 3 -SPECIFICATIONS
    Operating Temperature
    Operatiing Humidity
    Storage Temperature
    Storage Humidity
    Panel Model
         C15-LC880SNT C20-LC880SNT Size
    Display Size
    Pixel Pitch
    Viewing Angle (H/V)
    Screen Tilt Angle
    15.1
    ”
    304.1(H) X 228.1(V)mm
    0.297(H) X 0.297(V)mm 
    						
    							- 4 -Remote Control
    1.RECALL button
    To display setup information of channel
    2.MUTE button
    To switch on/off sound mute
    3.TV/VIDEO button To select TV, AV1, AV2, S-Video, COMP, VGA or DVI mode
    4.STANDBY button To switch on the LCD TV/monitor when at standby mode or vice versa
    5.PICTURE button
    To select picture effect mode (Standard/Soft/Custom/Bright)
    6.SLEEP button To on/off sleep mode and set the sleep timer LOCATION OF CONTROL (Continued)
    1 2
    4
    10 3
    5
    7 6
    8
    9
    11 12
    14
    1213
    15
    16
    17 1516LOCATION OF CONTROL 
    						
    							- 5 -7.SOUND button
    To select the sound effect mode (Custom/News/Cinema/MusicHall)
    8.TIME button
    To display the preset time
    9.NUMBER buttons To directly select program number
    10.DIGIT button To select one, two or three-digit program number input options
    11.LST-CH button
    To return to previously selected program number
    12.TELETEXT buttons (OPTIONAL) These buttons are used for certain models with Teletext functions only. For further details, refer
    to the  “TELETEXT FUNCTION ” section in this manual
    13.CH  I/II button
    To switch between NICAM / A2 stereo and mono sound output
    14.TV MENU button To enter the TV menu directly to tune the programs
    15.P-/+ ( ) buttons
    To select previous / next program and to operate the menu
    16. -/+ ( ) buttons
    To decrease / increase volume and to adjust the menu
    17.MENU button To enter or exit from the MENU (TV/AV mode)
    To accept your selection (PC mode) LOCATION OF CONTROL 
    						
    							- 6 -Front and Side Panels
    1.TV/VIDEO button
    To select TV, AV1, AV2, S-Video,
    COMP, VGA or DVI mode
    2.MENU button To enter or exit from the menu
    3.PROGRAM buttons To select previous/next program
    4 .VOLUME buttons To decrease/increase volume 5.STANDBY button
    To switch on when at standby mode or vice
    versa
    6.POWER INDICATOR Lights up in red when the set is on standby;
    Lights up in green when the set is power on
    7.REMOTE CONTROL SENSOR Infrared sensor for the remote control
    For 15
    ” model
    For 20 ” model 5
    6
    71
    2
    3
    4
    1
    2
    3
    4 5
    6 7LOCATION OF CONTROL 
    						
    							- 7 -Connecting The Antenna
    Note:
    *
    Aerial connections: Standard-phono socket 75  or F connector.
    .
    * Input impedance: 75  unbalanced.
    * For Australia only -Install an external aerial conforming to AS 1417.1 for safety purpose. CONNECTIONS
    Antenna 
    						
    							- 8 -Connecting The PC
    STEPS:
    1.Switch off all power supplies to the equipment and TV set before connection
    2.Connect the signal and audio cables from the computer output terminal to the TV
    3.Connect power cord
    4.Switch on the TV first, then switch on the computer
    5.If the TV still does not function properly, please refer to the troubleshooting section to diagnose
    the problem.
    * Please do not open the cover of the TV
    Note:
    Do not pull the cables. When connecting and disconnecting the cables, do it with your hand holding
    the connector. CONNECTIONS To Audio output
    To Audio input
     (AV2)
    To Signal input
     (D-sub)
    To Signal output
     (D-sub)
    To DVI input
    To DVI output
     
    						
    							- 9 -CONNECTIONS
    Connecting AV Equipment
    This TV set provides AV1, AV2 input terminals, S-Video and a group of Y/Pb/Pr terminal for connection
    to VCR, VCD, DVD or other video equipment.
    Please refer to the instruction manual of the other equipment for more information on the connection
    to the TV.
    ’
    Note:
    * Please disconnect all the power supplies to the equipment and TV set before connection.
    * Do not pull the cables. When connecting and disconnecting the cables, do it with your hand
    holding the connector.
    * Only 1 set of audio cable is to be connected to Audio input terminals of AV2. VIDEO EQUIPMENTTo Audio output
    
    To Audio
    input (AV2)
    VIDEO EQUIPMENT
    VIDEO EQUIPMENT
    VIDEO EQUIPMENT To Audio
    input (AV2)
    To Audio
    input (AV2)
    To Audio output
    To Video output
    To Video input
    To Video and
    Audio input
    To Video and
    Audio output
    To Component
    input
    To S-Video
    input
    To Component
    output
    To S-Video
    output
    To Audio input
    (AV2)
     
    						
    							- 10 -FACTORY SETTINGS
    1.Press MENU button, then press 3210 using the number button on the remote control to enter into the factory setting.
    2.The factory setting menu will be displayed on the screen. The following table is shown when in AV mode:
     Item   Factory setting         C15-LC880SNT C20-LC880SNT
       1 Basic Setting Backlight50
    NVRAM Addr
    NVRAM Val
       2 Color Setting Auto Adjust
    Red0
    Green 0
    Blue 0
    Red Offset 0
    Green Offset 0
    Blue Offset 0
    Min Volume 0
    Max Volume 68
       3 Sound Setting Dot1 X  Pos31
    Dot1 Y  Pos 69
    Dot2 X  Pos 62
    Dot2 Y  Pos 81
       4 4200K 5000K Warm Brightness128
    Contrast 128
    Red 247
    Green 237
    Blue 237
       5 STANDARD Brightness128
    Contrast 128
    Red 255
    Green 255
    Blue 255
       6 COOL Brightness128
    Contrast 126
    Red 224
    Green 228
    Blue 251
       7 CUSTOM Brightness128
    Contrast 128
    Red 255
    Green 255
    Blue 255
       8 Advanced Setting Factory Mode1
    Power Mode 1
    Panel Index 34
    Decder SatHue 0
    Enable Zoom 1
    Enable SCART P  1
    1
    Enable DVI Port 1
    Factory Reset
       9 Version Info V1.9-C15-LC880SNT V1.9-C20-LC880SNT
    ADDC:V8-L15GC1-A1D01 ADDC:V8-L20GC1-A1D01
    DDDC:V8-L15GC1-A1D02 DDDC:V8-L20GC1-A1D02 
    						
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