Hitachi 22LD4500UK Page 59 Service Manual Download

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Hitachi, Ltd. Tokyo, Japan

International Sales Division

THE HITACHI ATAGO BUILDING,

No. 15 –12 Nishi Shinbashi, 2 – Chome,

Minato – Ku, Tokyo 105-8430, Japan.

Tel: 03 35022111

HITACHI EUROPE LTD,

Whitebrook Park
Lower Cookham Road
Maidenhead
Berkshire
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UNITED KINGDOM

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Email:

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HITACHI EUROPE GmbH

Munich Office
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GERMANY

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Hotline: +49-180-551 25 51 (12ct/min)
Email:

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HITACHI EUROPE S.A.

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Edificios Trade - Torre Este
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SPAIN

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HITACHI EUROPE srl

Via Tommaso Gulli N.39, 20147
Milano, Italia

ITALY

Tel: +39 02 487861
Tel: +39 02 38073415 Servizio Clienti
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HITACHI Europe AB

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SWEDEN

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HITACHI EUROPE S.A.S

Lyon Office
B.P. 45, 69671 BRON CEDEX

FRANCE

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HITACH EUROPE AB

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www.hitachidigitalmedia.com

Summary of Contents for 22LD4500UK

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: ... 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 TFMS5360 6 11 4 1 Description 6 11 4 2 Features 6 11 5 ST24LC21 7 11 5 1 Description 7 11 5 2 Features 7 11 5 3 Pin connections 7 11 6 SST37VF040 8 11 6 1 Description 8 11 6 2 Features 8 11...

Page 3: ...883A 19 11 17 1 General description 19 11 17 2 Features 19 11 17 3 Pin Descriptions 19 11 18 MC141585 22 11 18 1 General description 22 11 18 2 Features 22 11 18 3 Pin Description 22 11 19 MC34063 24 11 19 1 Description 24 11 19 2 Features 24 11 19 3 Pin connections 24 11 20 MSP34X0G 25 11 20 1 Introduction 25 11 20 2 Features 25 11 20 3 Pin connections 26 11 21 DS90C385 27 11 21 1 General Descrip...

Page 4: ...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 5: ... 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 µs 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 Memory Up to 128 Kilobyte on Chip ...

Page 6: ...nputs 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 interface which us...

Page 7: ...and 5V The LM1117 offers 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...

Page 8: ...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 frequency 2 over ...

Page 9: ... 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 Internal Short Circuit Current Limiting Constant with Temperature Output Transistor Safe Area Compensation Floating Op...

Page 10: ...n 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 5 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 Write Up To 8 Bytes...

Page 11: ...EPROMs OTPs and mask ROMs 11 6 2 Features Organized as 64K x8 128K x8 256K x8 512K x8 2 7 3 6V Read Operation Superior Reliability Endurance At least 1000 Cycles Greater than 100 years Data Retention Low Power Consumption Active Current 10 mA typical Standby Current 2 µA typical Fast Read Access Time 70 ns 90 ns Latched Address and Data Fast Byte Program Operation Byte Program Time 10 µs typical C...

Page 12: ...oltage 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 7 2 Features 25MHz Bandwidth Crosstalk 55dB Short circuit to ground or VCC protected Anti saturation gai...

Page 13: ...word of 16 bits is necessary to determine one configuration 11 8 2 13 5 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 output 55dB crosstalk...

Page 14: ...ge 11 9 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 Read1 Cr1 Analog ...

Page 15: ...ntal 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 Crystal Output 64...

Page 16: ... 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 buffer of 1 Kilobyte ...

Page 17: ...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 single reference Q...

Page 18: ...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 pos 5 Non inverting input B 2 5V INB neg 6 Inverting input B Vo clip Min 1400mVrms OUTB 7 Output B Voltage swing Min 0 75V Max 4 25V VDD 8 Positive supply 5V Min 3 0V Max 7 0V 11 13 AN7522N 11 13 1 General description AN7522N is...

Page 19: ...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 14 2 Features High performance low cost solution to switch between video sources Wide bandwidth 200 MHz Low ON resistance 3...

Page 20: ...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 15 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 720P and 1080I HD...

Page 21: ...Keyboard operation 11 16 2 Features Low voltage requirement Biphase transmission technique Single pin oscillator Test mode facility 11 16 3 Pinning Pin Mnemonic Function 1 X7 IPU Sense input from key matrix 2 SSM I Sense mode selection input 3 Z0 Z3 IPU Sense inputs from key matrix 7 MDATA OP3 Generated output data modulated with 1 12 the oscillator frequency at a 25 duty factor 8 DATA OP3 Generat...

Page 22: ...aving 80 lead LQFP surface mount plastic package and is specified over the 0C to 70C temperature range 11 17 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 Output Format Mode...

Page 23: ...cludes 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 level can be program...

Page 24: ... 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 25 switching at hi...

Page 25: ...nd 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 18 2 Features Totally 512 Fonts Including 496 Standard Fonts and 16 Multi Color Fonts 10x18 or 12x18 Font Matrix Selection Maximum Pixel CLK o...

Page 26: ...e 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 would be equal to VDD ...

Page 27: ...lator 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 19 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 Adjustable Frequency O...

Page 28: ...4x0G 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 no I C interaction ...

Page 29: ... 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 clock output 18 432 M...

Page 30: ...round 14 DVSS OBL Digital ground 67 18 16 13 10 DVSUP OBL Digital power supply 5V 12 DVSUP OBL Digital power supply 5V 11 DVSUP OBL Digital power supply 5V 68 17 15 10 9 ADR_CL OUT LV ADR clock 11 21 DS90C385 11 21 1 General Description The DS90C385 transmitter converts 28 bits of LVCMOS LVTTL data into four LVDS Low Voltage Differential Signaling data streams A phase locked transmit clock is tran...

Page 31: ...PLL PLL GND I 2 Ground pins for PLL LVDS VCC I 1 Power supply pin for LVDS outputs LVDS GND I 3 Ground pins for LVDS outputs DS90C385SLC SLC64A FBGA Package Pin Summary FPD Link Transmitter Pin name I O No Description TxIN I 28 TTL level input TxOUT O 4 Positive LVDS differentiaI data output TxOUT O 4 Negative LVDS differential data output TxCLKIN I 1 TTL Ievel clock input The rising edge acts as ...

Page 32: ... I E1 VCC P H6 TxIN18 I E2 TxIN6 I H7 TxIN19 I E3 TxIN7 I H8 TxIN20 I E4 GND G G7 TxIN21 I E5 TxIN16 I F7 TxIN22 I E6 VCC P G8 TxIN23 I E7 TxIN24 I E7 TxIN24 I E8 GND G F8 TxIN25 I F1 TxIN5 I D8 TxIN26 I F2 NC A1 TxIN27 I F3 NC A6 TxCLKOUT O F4 TxIN12 I A7 TxCLKOUT O F5 TxIN17 I A2 TxOUT0 O F6 NC A3 TxOUT0 O F7 TxIN22 I C4 TxOUT1 O F8 TxIN25 I D4 TxOUT1 O G1 GND G B5 TxOUT2 O G2 TxIN8 I C5 TxOUT2 ...

Page 33: ... pins for PLL LVDS VCC I 1 Power supply pin for LVDS outputs LVDS GND I 3 Ground pins for LVDS outputs 11 22 LM1084 11 22 1 General description The LM1084 is a series of low dropout voltage positive regulators with a maximum dropout of 1 5V at 5A of load current The LM1084 is available in an adjustable version which can set the output voltage with only two external resistors It is also available i...

Page 34: ... 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 button The following...

Page 35: ...nable disable Automatic Programming System Set ON Headphone On Off enable disable the usage of the HP and HP related items in sound menu Set ON Vsr On Off enable disable Vsr Set OFF DBE On Off enable disable DBE Set OFF Subwoofer On Off enable disable Subwoofer Set OFF Lineout On Off enable disable Lineout Set ON Dolby prologic On Off enable disable dolby prologic system Set OFF Equalizer On Off e...

Page 36: ...nable disable NM Standard Set OFF FM Prs Avl On Adjusts the FM Prescaler value when Automatic Volume Levelling is On Min Value 0000 00000 Max Value 00FF 00255 Recommended Value 000F 00015 for 16 ohm Options Equalizer BG DK I L L M N NM FM Prs Avl On 018 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 Av...

Page 37: ... Prescaler value when Automatic Volume Levelling is Off Min Value 0000 00000 Max Value 00FF 00255 Recommended Value 0008 00012 for 16 ohm Nicam Prs Avl Off Adjusts the Nicam Prescaler value when Automatic Volume Levelling is Off Min Value 0000 00000 Max Value 00FF 00255 Recommended Value 0013 00028 for 16 ohm Scart Prs Avl Off Adjusts the Scart Prescaler value when Automatic Volume Levelling is Of...

Page 38: ...uency Min Value 0000 00000 Max Value 00FF 00255 Recommended Value 0000 00000 Sound On Off enable disable Sound Set ON Carrier On Off enable disable Carrier Set ON RC_1541 On Off Enables disables Remote control usage for Service menu Set ON AV 1 On Off enable disable AV 1 Set ON AV 2 On Off enable disable AV 2 Set ON S VIDEO On Off enable disable S VIDEO Set ON AV 3 On Off enable disable AV 3 Set O...

Page 39: ...rder to enter Aps Wss Test menu move the cursor 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 Options AV 3 PC MENU X X X X X X AGC 050 0012 00018 Aps Wss Test Programme Search VPS Pdc Format 1 Pdc Format 2 Name Wss CNN S 04 BG ...

Page 40: ...FB MAIN L R POWER REGULATORS 2 5V 3 3V 5V 8V 12V 14V 33V AUDIO AMPLIFIER 2x3W TUNER IF PROCESSOR VIDEO SWITCH 2 X RGB SWITCH VIDEO PROCESSOR AUDIO PROCESSOR HP PREAMPLIFIER AUDIO SWITCH MICROCONTROLLER SOFTWARE ROM EEPROM SCALER IC OSD IC 2M X 32 SDRAM TRIPLE ADC or DVI RECEIVER IC LVDS TRANSMITTER IC Selected video 37 ...

Page 41: ...CVBS_EXT MAIN TUNER CVBS_IF CVBS TDA 9886 IF VPC 3230D Video pro PI5V330 RGB SWITCH SC2_RGB FB RGB_SW SC_RGB TEA 5114 RGB SWITCH TEXT_FB RGB FB TEXT RGB MSP 3410G Audio Pro QSS SC1_L R SC2_L R FAV_L R PC_L R MONO_MAIN 4053 AUDIO SWITCH MONO_PIP AM_MONO 1308T HP IC MAIN L R OPTIONAL MONO_MAIN PING_L R OPTIONAL PING I2S I2C 3 3V 5V 8V 12V 33V RGB_SW RESET YUVIN SC_FB1 AGC HS VS SC_FB2 ...

Page 42: ...9883 YUV 4 2 2 8 bit YUV 4 2 2 8 bit HS VS SDA5550 MCU 4 4 4RGB 24 bit 3x8 bit RGB TF T LC D PA NE L Selected Video Txt RGB FB I2C 256K 512K ROM Address Data Bus 8K 16K EEPROM Control Signals Analog PC input RGB 3 X 1 bit OSD IC MC141585 OPTIONAL HS VS LVDS ...

Page 43: ...40 POWER AUDIO AMP BOARD AN7522N AUDIO AMPL MAIN L R MUTE ST BY SPEAKER L SPEAKER R REGULATORS ST BY 14V 5V 3 3V 2 5V 8V 33V 12V 14V ...

Page 44: ...41 14 CIRCUIT DIAGRAMS 17AMP07 3 001 Power Distribution Circuit ...

Page 45: ...42 17AMP07 3 002 Audio Amplifier Circuit ...

Page 46: ...43 17MB10 001 Scaler IC Circuit ...

Page 47: ...44 17MB10 002 Controller ...

Page 48: ...45 17MB10 003 ...

Page 49: ...46 17SC10 1 001 Video Processor ...

Page 50: ...47 17SC10 1 002 IF Processor ...

Page 51: ...48 17SC10 1 003 Video Switching Circuit ...

Page 52: ...49 17SC10 1 004 Audio Processor Circuit ...

Page 53: ...50 17FAV07 1 FRONT AUDIO VIDEO CONNECTIONS ...

Page 54: ...51 17TK07P TACTILE SWITCH BOARD ...

Page 55: ...52 17LD07 1 ...

Page 56: ...53 11UK10 2 REMOTE CONTROL ...

Page 57: ...QTY DESCRIPTION NO ...

Page 58: ...17PING08 IDTV Module VS30026752 17MB10 Main PCB VS20167610 17SC10A Tuner and Scart PCB VS20149950 17FAV07 AV HP SVHS VS20138184 17TK07P PUSH SW VS20138482 17AMP08 AMP BOARD VS20156025 17LD07 LED Board VS20141950 ...

Page 59: ...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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