Hitachi 17LD4220 Service Manual Download | Manualshive

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43

17” TFT TV Service Manual

21/09/2004

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Summary of Contents for 17LD4220

Page 1: ...e Ingenieur die Sicherheitshinweise und Hinweise zur Produktsicherheit in diesem Wartungshandbuch zu lesen SERVICE MANUAL MANUEL D ENTRETIEN WARTUNGSHANDBUCH Data contained within this Service manual is subject to alteration for improvement Les données fournies dans le présent manuel d entretien peuvent faire l objet de modifications en vue de perfectionner le produit Die in diesem Wartungshandbuc...

Page 2: ...THIS PAGE IS INTENTIONALLY LEFT BLANK ...

Page 3: ...escription 4 11 1 2 Features 4 11 1 3 Applications 4 11 1 4 Connection Diagrams 4 11 2 LM2576 5 11 2 1 General Description 5 11 2 2 Features 5 11 2 3 Pin description 5 11 3 LM317T 6 11 3 1 Description 6 11 3 2 Features 6 11 4 ST24LC21 7 11 4 1 Description 7 11 4 2 Features 7 11 4 3 Pin connections 7 11 5 TEA5114A 8 11 5 1 General description 8 11 5 2 Features 8 11 5 3 Pin Connections 8 11 6 TEA641...

Page 4: ...C141585 22 11 15 1 General description 22 11 15 2 Features 22 11 15 3 Pin Description 22 11 16 MC34063 24 11 16 1 Description 24 11 16 2 Features 24 11 16 3 Pin connections 24 11 17 MSP34X0G 25 11 17 1 Introduction 25 11 17 2 Features 25 11 17 3 Pin connections 26 11 18 DS90C385 28 11 18 1 General Description 28 11 18 2 Features 28 11 18 3 Pinning 28 11 19 NDS8947 29 11 19 1 General Description 29...

Page 5: ...and 5 Compact size 6 Complies to CENELEC EN55020 and EN55013 Pinning 1 Gain control voltage AGC 4 0V Max 4 5V 2 Tuning voltage 3 I C bus address select Max 5 5V 4 I C bus serial clock Min 0 3V Max 5 5V 5 I C bus serial data Min 0 3V Max 5 5V 6 Not connected 7 PLL supply voltage 5 0V Min 4 75V Max 5 5V 8 ADC input 9 Tuner supply voltage 33V Min 30V Max 35V 10 Symmetrical IF output 1 11 Symmetrical ...

Page 6: ...l function registers Normal Mode 33 33 MHz CPU clock Power Save mode 8 33 MHz 7 3 Microcontroller Features 8bit 8051 instruction set compatible CPU 33 33 MHz internal clock max 0 360 ms min instruction cycle Two 16 bit timers Watchdog timer Capture compare timer for infrared remote control decoding Pulse width modulation unit 2 channels 14 bit 6 channels 8 bit ADC 4 channels 8 bit UART rxd txd 7 4...

Page 7: ...ital or analogue inputs for the ADC Port2 One 2 bit I O port with secondary function P4 2 4 3 4 7 One 4 bit I O port with secondary function P4 0 4 1 4 4 Not available in P SDIP 52 8 SERIAL ACCESS CMOS 16K 2048 8 EEPROM ST24C16 The ST24C16 is a 16Kbit electrically erasable programmable memory EEPROM organised as 8 blocks of 256 8 bits The memory is compatible with the I C standard two wire serial ...

Page 8: ...ffers current limiting and thermal shutdown Its circuit includes a zener trimmed bandgap reference to as sure output voltage accuracy to within 1 The LM1117 series is available in SOT 223 TO 220 and TO 252 D PAK packages A minimum of 10µF tantalum capacitor is required at the output to improve the transient response and stability 11 1 2 Features Available in 1 8V 2 5V 2 85V 3 3V 5V and Adjustable ...

Page 9: ...nk is required or its size could be reduced dramatically A standard series of inductors optimized for use with the LM2576 are available from several different manufacturers This feature greatly simplifies the design of switch mode power supplies The LM2576 features include a guaranteed 4 tolerance on output voltage within specified input voltages and output load conditions and 10 on the oscillator...

Page 10: ... LM317 serves a wide variety of applications including local on card regulation This device can also be used to make a programmable output regulator or by connecting a fixed resistor between the adjustment and output the LM317 can be used as a precision current regulator 11 3 2 Features Output Current in Excess of 1 5 A Output Adjustable between 1 2 V and 37 V Internal Thermal Overload Protection ...

Page 11: ...ly mode except when the power supply is removed The device operates with a power supply value as low as 2 5V Both Plastic Dual in Line and Plastic Small Outline packages are available 11 4 2 Features 1 million Erase Write cycles 40 years data retention 2 5V to 5 5V single supply voltage 400k Hz compatibility over the full range of supply voltage Two wire serial interface I2 C bus compatible Page W...

Page 12: ...e same reference voltage on each input in order to have no differential voltage when switching two RGB generators An AC output signal higher than 2 Vpp makes gain going slowly down to 0dBto protect the TV set video amplifier from saturation Fast blanking output is a logical OR between FB1 Pin 8 and FB2 Pin 10 11 5 2 Features 25MHz Bandwidth Crosstalk 55dB Short circuit to ground or VCC protected A...

Page 13: ...guration In other case 1 word of 16 bits is necessary to determine one configuration 11 6 2 Features 20MHz Bandwidth Cascadable with another TEA6415C Internal address can be changed by pin 7 voltage 8 Inputs CVBS RGB MAC CHROMA 6 Outputs Possibility of MAC or chroma signal for each input by switching off the clamp with an external resistor bridge Bus controlled 6 5dB gain between any input and out...

Page 14: ... 80 pin PQFP package 11 7 2 Pin Connections and Short Descriptions NC not connected LV if not used leave vacant X obligatory connect as described in circuit diagram SUPPLYA 4 75 5 25 V SUPPLYD 3 15 3 45 V Pin No PQFP 80 pin Pin Name Type Connection if not used Short Description 1 B1 CB1IN IN VREF Blue1 Cb1 Analog Component Input 2 G1 Y1IN IN VREF Green1 Y1 Analog Component Input 3 R1 CR1IN IN VREF...

Page 15: ... Front Sync Horizontal Clamp Pulse Front End Horizontal Sync Output 56 MSY HS IN OUT LV Main Sync Horizontal Sync Pulse 57 VS OUT LV Vertical Sync Pulse 58 FPDAT VSYA IN OUT LV Front End Back End Data Front End Vertical Sync Output 59 VSTBYY SUPPLYA X Standby Supply Voltage 60 CLK5 OUT LV CCU 5 MHz Clock Output 61 NC LV or GNDD Not Connected 62 XTAL1 IN X Analog Crystal Input 63 XTAL2 OUT X Analog...

Page 16: ...bilities based on parallel attributes and Pixel oriented characters DRCS The 8 bit Microcontroller runs at 360 ns cycle time min Controller with dedicated hardware does most of the internal TTX acquisition processing transfers data to from external memory interface and receives transmits data via I2 C firmware user interface The slicer combined with dedicated hardware stores TTX data in a VBI buff...

Page 17: ...n fade mode A logic high on this pin allows a quick transition to the desired volume setting LINN 6 I Negative differential audio input for left channel LINP 5 I Positive differential audio input for left channel LOUTN 16 17 O Class D 1 2 H bridge negative output for left channel LOUTP 20 21 O Class D 1 2 H bridge positive output for left channel MUTE 34 I A logic high on this pin disables the out...

Page 18: ...9 2004 VOLUME 11 I DC voltage that sets the gain of the amplifier VREF 8 I Analog reference for gain control section V2P5 4 O 2 5 V Reference for analog cells as well as reference for unused audio input when using single ended inputs ...

Page 19: ...Frequency Control AFC detector with 4 bit digital to analog converter AFC bits via I2 C bus readable TakeOver Point TOP adjustable via I2 C bus or alternatively with potentiometer Fully integrated sound carrier trap for 4 5 5 5 6 0 and 6 5 MHz controlled by FM PLL oscillator Sound IF SIF input for single reference Quasi Split Sound QSS mode PLL controlled SIF AGC for gain controlled SIF amplifier ...

Page 20: ...xcellent power supply ripple rejection Low power consumption Short circuit resistant High performance high signal to noise ratio High slew rate Low distortion Large output voltage swing 11 11 3 Pinning SYMBOL PIN DESCRIPTION PIN VALUE OUTA 1 Output A Voltage swing Min 0 75V Max 4 25V INA neg 2 Inverting input A Vo clip Min 1400mVrms INA pos 3 Non inverting input A 2 5V VSS 4 Negative supply 0V INB...

Page 21: ...greater than most analog switches offered today A single 5V supply is all that is required for operation The PI5V330 offers a high performance low cost solution to switch between video sources The application section describes the PI5V330 replacing the HC4053 multiplier and buffer amplifier 11 12 2 Features High performance low cost solution to switch between video sources Wide bandwidth 200 MHz L...

Page 22: ...The design kit is complete with hardware and software Software includes G Probe debug software G Wizard register calculator and G TV application source code The 6015RD1 is a related reference board that outputs analog YpbPr RGB 11 13 2 Features Dual channel gm6015 based LCD TV system Industry leading Crystal Cinema Plus video scan conversion Inputs i Component analog YPbPr RGB ii 480 576I 480 576P...

Page 23: ...vided in a space saving 80 lead LQFP surface mount plastic package and is specified over the 0C to 70C temperature range 11 14 2 Features 140 MSPS Maximum Conversion Rate 300 MHz Analog Bandwidth 0 5 V to 1 0 V Analog Input Range 500 ps p p PLL Clock Jitter at 110 MSPS 3 3 V Power Supply Full Sync Processing Sync Detect for Plugging Midscale Clamping Power Down Mode Low Power 500 mW Typical 4 2 2 ...

Page 24: ...ctive The input includes a Schmitt trigger for noise immunity with a nominal input threshold of 1 5 V VSYNC Vertical Sync Input This is the input for vertical sync SOGIN Sync on Green Input This input is provided to assist with processing signals with embedded sync typically on the GREEN channel The pin is connected to a high speed comparator with an internally generated threshold The threshold le...

Page 25: ...oper operation the pixel clock generator PLL requires an external filter Connect the filter shown in Figure 6 to this pin For optimal performance minimize noise and parasitics on this node POWER SUPPLY VD Main Power Supply These pins supply power to the main elements of the circuit They should be as quiet and filtered as possible VDD Digital Output Power Supply A large number of output pins up to ...

Page 26: ...ght of character and row to row spacing and full screen erasing and Fade In Fade Out are also incorporated There are 8 color selections for any individual character display with row intensity attribute and window intensity attribute to expand the color mixture on OSD menu 11 15 2 Features Totally 512 Fonts Including 496 Standard Fonts and 16 Multi Color Fonts 10x18 or 12x18 Font Matrix Selection M...

Page 27: ...Data is read at the rising edge of each clock signal VDD Pin 9 This is the power pin for the digital logic of the chip VSYNC Pin 10 Similar to Pin 5 this pin inputs a vertical synchronize signal to synchronize the vertical control circuit It is negative polarity by default VDD I Pin 11 This is the voltage supply of RGB outputs when low intensity of Windows ROW is selected The RBG output level woul...

Page 28: ...d duty cycle oscillator with an active current limit circuit driver and high current output switch This series was specifically designed to be incorporated in Step Down and Step Up and Voltage Inverting applications with a minimum number of external components 11 16 2 Features Operation from 3 0 V to 40 V Input Low Standby Current Current Limiting Output Switch Current to 1 5 A Output Voltage Adju...

Page 29: ... MSP 34x0D The MSP 34x0G further simplifies controlling software Standard selection requires a single I C transmission only The MSP 34x0G has built in automatic functions The IC is able to detect the actual sound standard automatically Automatic Standard Detection Furthermore pilot levels and identification signals can be evaluated internally with subsequent switching between mono stereo bilingual...

Page 30: ... C data 9 9 7 2 1 I2C_CL IN OUT OBL I 2 C clock 10 8 1 64 NC LV Not connected 11 7 6 80 63 STANDBYQ IN OBL Stand by low active 12 6 5 79 62 ADR_SEL IN OBL I 2 C bus address select 13 5 4 78 61 D_CTR_I O_0 IN OUT LV D_CTR_I O_0 14 4 3 77 60 D_CTR_I O_1 IN OUT LV D_CTR_I O_1 15 3 76 59 NC LV Not connected 16 2 75 58 NC LV Not connected 17 NC LV Not connected 18 1 2 74 57 AUD_CL_OUT OUT LV Audio cloc...

Page 31: ...4 28 34 26 SC2_OUT_L OUT LV SCART output 2 left 51 33 27 33 25 SC2_OUT_R OUT LV SCART output 2 right 52 32 NC LV Not connected 53 32 31 24 NC LV Not connected 54 31 26 30 23 DACM_SUB OUT LV Subwoofer output 55 30 29 22 NC LV Not connected 56 29 25 28 21 DACM_L OUT LV Loudspeaker out left 57 28 24 27 20 DACM_R OUT LV Loudspeaker out right 58 27 23 26 19 VREF2 OBL Reference ground 2 59 26 22 25 18 D...

Page 32: ...ge strobe through a dedicated pin A Rising edge or Falling edge strobe transmitter will interoperate with a Falling edge strobe Receiver DS90CF386 DS90CF366 without any translation logic The DS90C385 is also offered in a 64 ball 0 8mm fine pitch ball grid array FBGA package which provides a 44 reduction in PCB footprint compared to the TSSOP package This chipset is an ideal means to solve EMI and ...

Page 33: ... and provide superior switching performance These devices are particularly suited for low voltage applications such as notebook computer power management and other battery powered circuits where fast switching low in line power loss and resistance to transients are needed 11 19 2 Features 4A 30V RDS ON 0 065W VGS 10V RDS ON 0 1W VGS 4 5V High density cell design for extremely low RDS ON High power...

Page 34: ...ly The following menu appears on the screen After entering the Service menu you can access its items by pressing buttons In order to enter selected menu use buttons To exit the service menu press M button Entire service menu parameters of TFT TV are listed below 12 1 ADJUST MENU SETTINGS In order to enter Adjust menu move the cursor to Adjust parameter by pressing buttons in Service Menu and press...

Page 35: ...On Off If ON TV starts with APS menu at Start up A P S On Off Enables disables Automatic Programming System Headphone On Off Enables disables the usage of the HP and HP related items in Sound menu Vsr On Off Enables disables Vsr DBE On Off Enables disables DBE Subwoofer On Off Enables disables Subwoofer Lineout On Off Enables disables Lineout Dolby prologic On Off Enables disables dolby prologic s...

Page 36: ...les NZ Standard NM On Off Enables disables NM Standard FM Prs Avl On Adjusts the FM Prescaler value when Automatic Volume Levelling is On Min Value 0000 00000 Max Value 00FF 00255 Options Equalizer BG DK I L L AUS NZ NM FM Prs Avl On 017 Off Options FM Prs Avl On Nicam Prs Avl On Scart Prs Avl On Scart Volume Avl On FM Prs Avl Off Nicam Prs Avl Off Scart Prs Avl Off Scart Volume Avl Off HOTEL VoD ...

Page 37: ...ts the FM Prescaler value when Automatic Volume Levelling is Off Min Value 0000 00000 Max Value 00FF 00255 Nicam Prs Avl Off Adjusts the Nicam Prescaler value when Automatic Volume Levelling is Off Min Value 0000 00000 Max Value 00FF 00255 Scart Prs Avl Off Adjusts the Scart Prescaler value when Automatic Volume Levelling is Off Min Value 0000 00000 Max Value 00FF 00255 Scart Volume Avl Off Adjust...

Page 38: ...F Freq Adjusts the IF Frequency value Min Value 0000 00000 Max Value 00FF 00255 Sound On Off Enables disables Sound Carrier On Off Enables disables sound Carrier feature RC_Options On Off Enables disables Remote control usage for Service menu AV 1 On Off Enables disables AV 1 AV 2 On Off Enables disables AV 2 S VIDEO On Off Enables disables S VIDEO AV 3 On Off Enables disables AV 3 PC On Off Enabl...

Page 39: ...1 Disable 00000000 HOTEL MODE Enables disables Hotel mode feature Enable 00000001 Disable 00000000 X Not used LDLY Adjusts the Luna chroma DeLaY value Min Value 0000 00000 Max Value 0008 00008 AGC Adjusts the Automatic Gain Control value Min Value 0000 00000 Max Value 001F 00031 Options AV 3 PC MENU MIX HOTEL MODE X X X LDLY AGC 050 0012 00018 ...

Page 40: ...sor to Aps Wss Test parameter by pressing buttons in Service Menu and press button The following menu appears on the screen There are 7 items in the Aps Wss Test menu Programme Search VPS Pdc Format 1 Pdc Format 2 Name Wss Aps Wss Test Programme Search VPS Pdc Format 1 Pdc Format 2 Name Wss CNN S 04 BG 463 P 08 ...

Page 41: ...0 7 B 0 7 G 0 7 DCLK D_VSYNC D_HSYNC DE PL401 PL402 12V 5V 3 3V 2 5V 1 8V S 5V S3 3V S2 5V S1 8V 12V SCART 2 AV AUDIO IN OUT RCA_CVBS RCA AUDIO IN OUT ADC AD9883 FLASH V G A A V I2 C I2 C I2C I2 C I2 C Audio Amplifier SCART 2 EE PROM SDRAM PORTB PORTA I2C BT656 RGB SWITCH 1 RGB SWITCH 2 SCART 2 CVBS IN OUT SCART1 RGB IN OSD GENERATOR MC14 SCART 1 CVBS IN OUT SCART 2 RGB IN I2 C SVHS Y I2 C HEADPHO...

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Page 51: ...47 Milano Italia ITALY Tel 39 02 487861 Tel 39 02 38073415 Servizio Clienti Fax 39 02 48786381 2 Email customerservice italy hitachi eu com HITACHI Europe AB Box 77 S 164 94 Kista SWEDEN Tel 46 0 8 562 711 00 Fax 46 0 8 562 711 13 Email csgswe hitachi eu com HITACHI EUROPE S A S Lyon Office B P 45 69671 BRON CEDEX FRANCE Tel 33 04 72 14 29 70 Fax 33 04 72 14 29 99 Email france consommateur hitachi...

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