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Hitachi C20 Lc880snt Service Manual

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    							- 38 -INFORMATION OF ICS
    IC GM5221 PQFP-208 (Miscellaneous)
    Pin No.
       Pin Name Description
        1 ROM-DATA3 External ROM DATA3
        2 ROM-DATA2 External ROM DATA2
        3 ROM-DATA1 External ROM DATA1
        4 ROM-DATA0 External ROM DATA0
        5 ROM-OEn External ROM Output Enable
        6 ROM-WEn External ROM Write Enable
        7 ROM-CSN External ROM Crip Select Enable
    8,42,51, CRVSS Ground for cord power
    74,76,87,
    94,97,
    140,180
    9,41,75, CVDD_18 Cord Digital power. Connect to digital 1.8V supply.
    86,96,
    139,179
    10,57,58, RESERVED Reserved, unconnected
    59,60,61,
    62,63,65,
    70,135,
    155,167
    50,73,95 RVDD_33 Ring VDD power. Connect to digital 3.3V supply
    52,53,54, N.C. No connected
    104,105,
    157,158,
    159,160,
    161,162 
    						
    							- 39 -INFORMATION OF ICS
    IC SAA5264PS/M3/0104 SDIP52
    Pin No.    Pin Name Description
    1 PWM Output for 14-bit high precision Pulse Width Modulator(PWM)
    2 PWM0 Output for 6-bit PWMs 0 to 6
    3 PWM1
    4 PWM2
    5 PWM3
    6 PWM4
    7 PWM5
    8 PWM6
    9 ADC0 Inputs for the software Analog-to-Digital-Converter(ADC) facility
       10 ADC1
       11 ADC2
       12 ADC3
       13 VSCC Core ground
       14 SCL(NVRAM) I2
    C-bus Serial Clock input to Non-Volatile RAM
       15 SDA(NVRAM) I2
    C-bus Serial Data input/output (Non-Volatile RAM)
       16 Input/output for general use
       17 Input/output for general use
       18 Input/output for general use
       19 8mA current sinking capability for direct drive of Light Emitting
       20 Diodes (LEDs)
       21 Input/output for general use
       22 VSSA Analog ground
       23 CVBS0 Composite Video Baseband Signal(CVBS) input; a positive-going
       24 CVBS1 1 V (peak-to peak) input is required; connected via a 100 nF capacitor
       25 SYNC_FILTER Sync-pulse-filter input for CVBS; this pin should be connected to V SSA
    via a 100nF capacitor
       26 IREF Reference current input for analog circuits; for correct operation a
    24kΩ resistor should be connected to V SSA
       27 FRAME Frame de-interlace output synchronized with the VSYNC pulse to
    produce a non-interlaced display by adjustment of the vertical
    deflection circuits
       28 TEST Not avallable; connect this pin to V SSA
       29 COR Contrast reduction:open-drain, active LOW output which allows selective
    contrast reduction of the TV picture to enhance a mixed mode display
       30 PWM7 Output for 6-bit PWM7
       31 VDDA Analog supply voltage (3.3V)
       32 B Blue colour information pixel rate output
       33 G Green colour information pixel rate output
       34 R Red colour information pixel rate output
       35 VDS Video/data switch push-pull output for pixel rate fast blanking
       36 HSYNC Horizontal sync pulse input: Schmitt triggered for a Transistor Transistor
    Lever(TTL) version; the polarity of this pulse is programmable by
    register bit TXT1.H POLARITY 
    						
    							- 40 -IC SAA5264PS/M3/0104 SDIP52
    Pin No.
      Pin Name Description
        37 VSYNC Vertical sync pulse input; Schmitt triggered for a TTL version; the
    polarity of this pulse is programmable by register bit TXT1. V POLARITY
        38 VSSP Periphery ground
        39 VDDC Core supply voltage (+3.3V)
        40 OSCGND Crystal oscillator ground
        41 XTALIN 12 MHz crystal oscillator input
        42 STALOUT 12 MHz crystal oscillator output
        43 RESET Reset input; if this pin is HIGH for at least 2 machine cycles (24 oscillator
    periods) while the oscillator is running, the device resets; this pin
    should be connected to V DDP via a capacitor
        44 VDDP Periphery supply voltage (+3.3V)
        45 Input/output for general use
        46 Input/output for general use
        47 Input/output for general use
        48 Input/output for general use
        49 SCL I2
    C-bus Serial Clock input from application
        50 SDA I2
    C-bus Serial Data input/output (application)
        51 Input/output for general use
        52 Input/output for general useINFORMATION OF ICS
    IC  TPA1517NE DIP20
    Pin No.
      Pin Name Description
    1 IN1                    IN1 is the audio input for channel 1.
    2 SGND SGND is the input signal ground reference.
    3 SVRR SVRR is the midrail bypass.
    4 OUT1 OUT1 is the audio output for channel1.
    5 PGND PGND is the power ground reference.
    6 OUT2 OUT2 is the audio output for channel 2.
    7 VCC VCC  is the supply voltage input.
    8 M/SB M/SB is the mute/standby mode enable. When held at less than 2 V,
    this signal enables the TPA1517 for standby operation. When held
    between 3.5V and 8.2V,this signal enables the TPA1517 for mute
    operation. When held above 9.3V, the TPA1517 operates normally.
    9 IN2 IN2 in the audio input for channel 2.
      10-20 GND/HS GND/HS are the ground and heatsink connections. All GND/HS
    terminals are connected directly to the mount pad for thermal-enhanced
    operation.IC  TVP5146PFP S-PQFP-G80 (
    Clock Signals)
    Pin No.   Pin Name Description
        40 DATACLK Line-locked data output clock.
        74 XTAL1 External clock reference input. it may be connected to an external
    oscillator with a 1.8V compatible clock signal or a 14.31818-MHz
    crystal oscillator.
        75 XTAL2 External clock reference output. Not connected if XTAL1 is driven by an
    external single-ended oscillator. 
    						
    							- 41 -INFORMATION OF ICS
    IC  TVP5146PFP S-PQFP-G80 (Analog Video)
    Pin No.   Pin Name Description
        80 VI_1_A
        1 VI_1_B VI_1_x: Analog video input for CVBS/Pb/B/C
        2 VI_1_C VI_2_x: Analog video input for CVBS/Y/G
        7 VI_2_A VI_3_x: Analog video input for CVBS/Pr/R/C
        8 VI_2_B VI_4_x: Analog video input for CVBS/Y
        9 VI_2_C Up to 10 composite, 4 S-video, and 2 composite or 3 component
       16 VI_3_A video input(or a combination thereof) can be supported.
       17 VI_3_B The inputs must be ac-coupled. The recommended coupling
       18 VI_3_C  capacitor is 0.1μF.
       23 VI_4_A The possible input configurations are listed in the input select
     register at I2
    C subaddress 00h IC  TVP5146PFP S-PQFP-G80 (
    Digital Video)
    Pin No.   Pin Name Description
      57,58 C[9:0]/ Digital video output of CbCr, C[9] is MSB and C[0] is LSB. Unused
      59,60, GPIO[9:0] outputs can be left unconnected. Also, these terminals can be
      63,64, programmable general-purpose I/O.
      65,66, For the 8-bit mode, the two LSBs are ignored.
      69,70
        58 D_BLUE Digital BLUE input from overlay device.
        59 D_GREEN Digital GREEN input from overlay device.
        60 D_RED Digital RED input from overlay device.
        57 FSO Fast-switch overlay between digital RGB and any video.
      43,44 Y[9:0] Digital video output of Y/YCbCr, Y[9] is MSB and Y[0] is LSB.
      45,46, For the 8-bit mode, the two LSBs are ignored. Unused outputs
      47,50, can be left unconnected.
      51,52,
      53,54
    IC  TVP5146PFP S-PQFP-G80 ( Miscellaneous Signals)
    Pin No.   Pin Name Description
        35 FSS/GPIO Fast-switch(blanking) input. Switching signal between the synchronous
    component video(YPbPr/RGB) and the composite video input.
    Programmable general-purpose I/O
        37 GLCO/I2CA Genlock control output(GLCO). Two Genlock data formats are available:
    TI format and real time control(RTC) format.
    During reset, this terminal is an input used to program the I 2
    C address LSB.
        30 INTREQ Interrupt request
        33 PWDN Power down input:   1=Power down    0=Normal mode
        34 RESETB Reset input, active lowIC  TVP5146PFP S-PQFP-G80 (
    Host Interface)
    Pin No.   Pin Name Description
        28 SCL I2
    C clock input
        29 SDA I2
    C data bus 
    						
    							- 42 -IC  TVP5146PFP S-PQFP-G80 (
    Power Supply)
    Pin No.    Pin Name Description
        26 AGND Analog ground. Connect to analog ground.
        13 A18GND_REF Analog 1.8-V return
        12 A18VDD_REF Analog power for reference 1.8V
        79 CH1_A18GND
        10 CH2_A18GND Analog 1.8-V return
        15 CH3_A18GND
        24 CH4_A18GND
        78 CH1_A18GND
        11 CH2_A18GND Analog power. Connect to 1.8 V.
        14 CH3_A18GND
        25 CH4_A18GND
         3 CH1_A33GND
         6 CH2_A33GND Analog 3.3-V return
        19 CH3_A33GND
        22 CH4_A33GND
         4 CH1_A33VDD
         5 CH2_A33VDD Analog power. Connect to 3.3 V.
        20 CH3_A33VDD
        21 CH4_A33VDD
    27,32,42 DGND Digital return
    56,68
    31,41,55 DVDD Digital power. Connect to 1.8 V.
    67
    39,49,62 IOGND Digital power return
    38, 48,61 IOVDD Digital power. Connect to 3.3 V or less for reduced noise.
        77 PLL_A18GND Analog power return
        76 PLL_A18VDD Host Interfacewer. Connect to 1.8 V.INFORMATION OF ICS
    IC  TVP5146PFP S-PQFP-G80 (Sync Signals)
    Pin No.
       Pin Name Description
        72 HS/CS/GPIO Horizontal sync output or digital composite sync output Programmable
    general-purpose I/O
        73 VS/VBLK/GPIO Vertical sync output (for modes with dedicated VSYNC) or VBLK
    output Programmable general-purpose I/O
        71 FID/GPIO Odd/even field indicator output. This terminal needs a pulldown resistor.
    Programmable general-purpose I/O
        36 AVID/GPIO Active video indicator output
    Programmable general-purpose I/O 
    						
    							- 43 -REPLACEMENT PARTS LIST
    The following service parts list are available for purchase.
    Serviceman may quote the components shown in this page for servicing purposes.
    PRODUCT SAFETY NOTE :  Critical parts that have special safety characteristics are identified by a   in
    the replacement parts list or the schematic diagrams. 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.
    Please do not degrade the safety of this TV through improper servicing.      Cxx-LC880SNT
         15
    ”   20”
    PCB ASSEMBLY
    G771-15LB01-01 Control Keys PCB Ass’y
    G771-15LB02-01 15” Receiver PCB Ass ’y
    G771-15LB03-01 Tuner PCB Ass’y
    G771-20LB01-01 Control Keys PCB Ass’y
    G771-20LB02-01 20” Receiver PCB Ass ’y
    G771-20LB03-01 Tuner PCB Ass’y
    G771E15LB01-01 Main PCB Ass’y
    G771E20LB01-01 Main PCB Ass’y
    G7801-001001 PCB Ass’y Power BL1504015-06A
    G7801-002001 PCB Ass’y Power BL2006009-07
    SUPPLIED ACCESSORIES
    G7101-001001 AC Adaptor SAWA-01-451
    G7101-002001 AC Adaptor SAWA-02-521
    G7501-001001 Remote Control CLE-968
    LCD PANEL
    G6203-001001 Display LCD LTM150XH-L06
    G6203-002001 Display LCD A20SN02-PV4  Part No.
       Description 
    						
    							- 44 -PARTS LIST (FOR REFERENCE ONLY)
    The components shown in the remaining pages served as a reference only. It is not meant for ordering
    of components for servicing purposes. Do not quote any components from these lists.  Item
           Part No. Description        Circuit No.
        1 G1102-001001 COIL FIX C 120K T04 0603 L47
        2 G1102-001002 COIL FIX C 2R7K T04 0603 L34 L35 L36
        3 G1102-002001 COIL FIX C 3R3K  T08  1206 L48 L49 L50
        4 G1107-001001 COIL FIX  33uH  16.5X9   24.5T L15
        5 G1301-001006 CAPACITOR EC V A   SMA 220M C102 C18 C233 C29 C38 C48
    16DC T05 4X7 C73 C75 CA1 CA5 CA7 CB10
    CB9
        6 G1301-001018 CAPACITOR EC V A  SMA 100M C168 CA50
    16DC T05  4X7
        7 G1301-001019 CAPACITOR EC V A  SMA 3R3M CA20
    50DC T05  4X7
        8 G1301-001021 CAPACITOR EC V A  SMA 2R2M CA40
    50DC T05  4X7
        9 G1301-001024 CAPACITOR EC V A  SMA 100M C12 C13 C14 C3 CA16 CA23
    25DC T05  4X7 CA25 CA30 CA31 CA34 CA35
    CA48
       10 G1301-001026 CAPACITOR EC V A  SMA 101M C104 C105 C110 C111 C125
    16DC T05  6X7 C236 C237 C78 C94 C95 CA54
       11 G1301-001031 CAPACITOR EC V A  SMA 470M CB1
    16DC T05  5X7
       12 G1301-001111 CAPACITOR EC V A  SMA 331M C82  C83
    16DC T05 8X9
       13 G1301-002015 CAPACITOR EC V A SAII 471M C79 CA13 CA43 CA9
    25DC  T05  8X14
       14 G1323-001013 CAPACITOR CE C  TC   CG331J C127 C141 C148 C164 CA32
    50DC T04 0603 CA41 CA61 CA65
       15 G1323-001024 CAPACITOR CE C TC  CG150J C169 C170 C171
    50DC T04 0603
       16 G1323-001026 CAPACITOR CE C TC   CG330J C117 C118
    50DC T04 0603
       17 G1323-001027 CAPACITOR CE C TC   CG470J C229 C230 C231 C232 C76
    50DC T04 0603 CA14 CA15 CA51
       18 G1323-001029 CAPACITOR CE C TC   CG221J C46 C47 C55 C64 C66
    50DC T04 0603
       19 G1323-001035 CAPACITOR CE C TC   CG220J C88 CA37 CA38
    50DC T04 0603
       20 G1323-001038 CAPACITOR CE C TC   CG560J CA18 CA33 CB2 CB3
    50DC T04 0603
       21 G1323-001083 CAPACITOR CE C TC   CH5R0J C58 C59
    50DC T04 0603 CB4 CB5 CB6 CB7 CB8
    MAIN PCB ASSEMBLY 
    						
    							C15-LC880SNT & C20-LC880SNT
    SC No. 0013E    Copyright   Digital Media Systems Group, (2005) All rights reserved 
    						
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