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PDP TELEVISION
SERVICE MANUAL
MODEL NO. H-PDP4201
Hyundai
Please read this manual carefully before service.
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CONTENTS
Part:PP06 Chassis Features and Circuit......... Part:Introduction on Circuit Functions of PT4206 ...... Part:Analysis on Signal Process of PT4206......... Part:Typical Defectives and Repair of PT4206............ Annex: 1Main Assembly Drawing& of PT4206 2Wire Connecting Drawing of PT4206
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Part:PP06 Chassis Features and CBU Contents
1.1PP06 Chassis Technical Specifications 1.1.1 PT4206 Panel Datas
PT4206 is the most typical model using PP06 chassis; therefore we take PT4206 as an example.
852×3(RGB)×480 16,777,216 1.095mm(H)×1.110mm(V) High brightness High contrast 20000 Hours U/D160 / L/R160 933mmH×533mm(V) Remarks: Brightness and contrast may vary because of different panels being used. PDP Panel Resolution Colors Dot Pitch Brightness Contrast Lifespan of Panel Viewing Angle Response Time PT4206 mainly uses SAMSUNG SDI panel model S42SD-YD04 or S42SD-YD05 1.1.2 Specification Sheet
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Recommended Input Format PC Unsupportable Input Indication Color Temp. Adjust. Quick Plug-In & Use Picture Location Adjust. HD Signal YPbPr HD Signal DVI Video Including S-Video Compatible with Compatible with Picture System Sound System Digital Comb Filter 3D Comb Filter NTSC Movement Compensation Function Output Voltage Audio Effect NICAM/IGR Video/YpbPr Audio Input PC/DVI Audio Input 220V~, 50Hz 400W 3W Format
640×480/60Hz 800×600/60Hz Yes Yes Yes Yes 480P 576P 720P 1080i 480P576P720P 1080i and HDTV PAL/NTSC/SECAM D/K I B/G M Yes Yes Yes 2× 5W W OW Yes Audio L/R Audio L/R
Audio
Input Voltage Rating Consumption Standby Consumption
1.2Main Features
1.2.1 Terminals RF Input 1Rear S Terminal Input 1Rear A/V Input RCA1Rear YCbCr RCA1Rear DTV YPbPr RCA1Rear VGA/SVGA Input Hi-Density D-SUB 15 pin connector1Rear DVI Input 1 Rear A/V Output RCA Rear Remarks: PT4206 is equipped with a service terminal, which service people can connect with PC RS232 terminal to upgrade the software. 1.2.2 Working Condition Requirement: Working Condition Requirement Temperature 040
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Humidity Altitude
2070 02000m
1.2.3 Others Tuning System NICAM Demodulation Audio Effect Process Picture Freeze On Screen Display Blue Background without Signal Power Saving FS Tuning236 Programs Yes AV stereoSRS WOW5 Bands Equalizer TV/AV/S-VIDEO/YcbCr Only Chinese/English, Menu Location movable by user. Yes When TV is connected with PC input, while there is no signal from PC, after 60 seconds, TV will be automatically off and enter into Power Saving Mode. Press any key on TV or R/C, or there is signal from PC again, TV will be switched on automatically. When this function is on, pictures will move on regularly to protect the screen. When this function is on, the screen will be completely white to clear up slight shadowsplease see the instruction manual for more details Users can choose between 15 minutes auto-off without signal or 3 hours auto-off without operationplease see the instruction manual for more details
Pixel Movement White Screen Display
Home/Commercial Mode Optional
1.3CBU Content
1.3.1 PDP Inside Drawing:
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rial No.
Name Front Cabinet Filter Glass Shelve Bar PDP Panel Module Down Cover Module etc. Back Cabinet
Remarks: This drawing is for references only, please see the main assembly diagram and wire-connecting diagram for details. 1.3.2 Circuit Content
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The main content of PP06 circuit include: Power Regulating Circuit, RF Circuit, VGA, Analog Video, Digital Video Signal Processing Circuit, System Control Circuit, Button Control Circuit. Reference drawing as below:
Part:Introduction on Circuit Functions of PT4206
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2.1 Changhong PDP TV PT4206 main IC functions
NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 NAME N901 N601 U705 U701 N902 U1 U6 U11 U16 U17 U22 U20 U7 U9/U13 U71 U8 U19 U4 U5 U3 TYPE TDQ-6F7-FM2W MSP3410G-C12-100 TA2024 uPD64083GF-3BA TEA6425D VPC3230D-QA-B3 MST9885 SiI161BCT100 PW113-20Q AM29LV800BT-90 DS90C383AMTD ST232CD 24LC21A/SN SN74LVC126AD 74LV32D 24LC21A/SN 24LC32A/SN IS42S16400(A)-7T PI5V330(Q) PW1235
Function
Unify tuner Sound disposal sound amplifier NTSC 3D comb filter AV video switch Digital video disposal A/D converter DVI signal disposal Format transform and MCU FLASH ROM Difference transmit RS-232 signal disposal E²PROMdisplay parameter information Suffer amplifier Sync. face lifting enlarge E²PROMDVI parameter information E²PROMuser control information SDRAM RGB/YpbPr switch IP transform and picture improve
2.2Changhong PDP TV PT4206 main IC functions introduction
2.2.1 A/D converter MST9885 General The MST9885 is a fully integrated analog interface for digitizing high-resolution RGB graphics signals from PCs and workstations. With a sampling rate capability of up to 140 MHz, it can accurately support display resolutions up to 1280x1024 (SXGA) at 75 Hz. The clamped input circuits provide sufficient bandwidth to accurately digitize each pixel. The MST9885B provides a high performance highly integrated solution to support the digitization process, including the ADCs, a voltage reference, a PLL to generate the pixel sampling clock from HSYNC, clamping circuits, and programmable offset and gain circuits to provide brightness and contrast controls. When the COAST signal is asserted, the PLL will maintain its output frequency when HSYNC pulses are absent, such as during the VSYNC period in some systems. A 32-step programmable phase adjustment control (0-360 deg) is provided for the pixel sampling clock to adjust for the difference between the HSYNC edge and RGB pixel edge timing. The MST9885B can send output data through one 24-bit port at the pixel clock rate. The MST9885B can also support R, G, B to Y, U, V conversion. The MST9885B has internal programmable pattern generator for testing. The MST9885B can accept either standard TTL, CMOS levels or sawtooth vertical deflection signals for VSYNC input.
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MST9885 Pin Function Descriptions Pin(s) 7077 29 1219 67 66 65 64 37 58 31 30 43 49 48 54 29 38 55 56 57 33 262739 424546 515259 62 112223 697879 3435 11020 212425 283236 404144 475053 606163 6880 name RED0RED7 GREEN0GREEN7 BLUE0BLUE7 DATACK HSOUT SOGOUT VSOUT MIDSCV REFBYP VSYNC HSYNC BAIN SOGIN GAIN RAIN COAST CLAMP A0 SCL SDA FILT AVDD Function Red output data Green output data Blue output data Output data clock HSYNC output Sync-on- Green Slicer output VSYNC output Internal mid-scale voltage bypass Internal reference bypass Vertical SYNC input Horizontal SYNC input Blue analog input Sync-on- Green analog input Green analog input Red analog input Hold PLL frequency and do not track HSYNC External clamp input(we connect it to ground Serial interface address pin I2C busclock I2C busdata PLL connect to external filter Analog power
V33 PVDD GND
Digital output power PLL power ground
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MST9885 Block Diagram
2.2.2VPC3230 General VPC3230 Pin Function Descriptions Pin No. 13 46 76430 11 25 12 35 77 65 46 68 51 80 8 9 10 36 29 4552 596976 13 14 15 16 17 18 1923 24 27 28 3134 Pin Name R1G1B1IN R2G2B2IN GND Short Description RGB Analog Component Input 1 RGB Analog Component Input 2 GND
NC VSUPCAP V33 AVCC SCL SDA RESQ TEST VGAV YCOEQ FFIE CLK20 LLC2 LLC1 Y0Y7
NC Supply Voltage, Digital Decoupling Circuitry Supply Voltage, Digital Circuitry Analog Voltage I2C Bus Clock I2C Bus Data Reset Input Test Pin VGAV Input Y/C Output Enable Input NC Main Clock Output Clock Output NC YUV signal output (Digital ITU-R656 format)
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3740 4144 4750 53 54 55 56 57 58 60 61 62 63 66 67 70 71 72 73 74 78 79
C0C7 INTLC AVO FSY/HC MSY/HS VS FPDAT CLK5 NC XTAL1 XTAL2 VRT I2CSEL VOUT CIN VIN1 VIN2 VIN3 VREF FB1IN
Digital chromatic signal output Interlace scan control output (0-odd,1-even) Active Video Output NC Horizontal Sync Pulse output Vertical Sync Pulse NC 5 MHz Clock Output NC 20.25M Analog Crystal Input 20.25M Analog Crystal Output Reference Voltage Top, Analog I2C Bus Address Select Analog Video Output Chroma / Analog Video 5 Input Video 1 Analog Input Video 2 Analog Input Video 3 Analog Input Reference Voltage Top Fast Blank Input
VPC3230 Block Diagram
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2.2.3PW113 General The PW113 integrates an industry-leading scaler, an advanced OSD engine, a flexible input port system, system memory, and a powerful 80186-based horizontal and vertical image scaler swith intelligent Auto Image Optimization circuitryThe Image Processor supports NTSC or PAL video data with a 4:3 aspect ratio and 16:9 aspect ratio sources, such as DVD or HDTV. Video Input formats can be in either YUV4:4:4 (24 bit) or YUV4:2:2 (16 bit) input modesThe PW113 uses an integrated PLL to synchronize the display interface timing to the input timingAn integrated OSD controller supports sophisticated bit-mapped based OSDs The OSD controller supports transparent, translucent, and fade-in/ fade-out functions.
Pin Function Descriptions Pin(s) name Function VPort Pixel Clock input VPort Vertical Sync input VPort Horizontal Sync input VGPort Field Input VPort Pixel Enable VGPort ITUR656 Pixel Data.I/O port We use 47 MUTE mute control 48 PW1230E PW1235output enable49 VGASEL VGA/YpbPr select 50 S1 sound system control51 DVIPD DVI interface standby54 STANDBY power standby control56 RST1 peripheral IC reset GPort Pixel Clock input GPort Vertical Sync input GPort Horizontal Sync/GPort Sync- on-Green input GPort Pixel Enable input GPort PLL Feedback / Line Advance Input GPort Red Pixel Data input GPort Green Pixel Data input GPort Blue Pixel Data input Video Port Pin Descriptions 71 VCLK 74 VVS 75 VHS 69 VFIELD 70 VPEN 4756 YUV0YUV7
Graphics Port Pin Descriptions 31 GCLK 32 GVS 33 GHSSOG 34 GPEN 35 GFBK 2027 GRE0GRE7 10151819 GGE0GGE7 29 GBE0GBE7
Display/Graphics Port Pin Descriptions 129136 DGPort Red Pixel Data(odd outputs) DGR0DGR7 119122 DGPort Green Pixel Data(odd outputs) DGG0DGG7
125128
111118 DGB0DGB7 Display Port Pin Descriptions 106 DCLK 108 DVS 109 DHS 110 DEN 96103 DR0DR7 8895 DR0DR7 7683 DB0DB7
DGPort Blue Pixel Data(odd outputs) DPort Pixel Clock output DPort Vertical Sync output DPort Horizontal Sync output DPort Pixel Enable output DPort Red Pixel Data(even outputs) DPort Green Pixel Data(even outputs) DPort Blue Pixel Data(even outputs)
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Microprocessor Interface Pin Descriptions 194 WR Write Enable low indicates a write to external RAM or other devices 195 RD Read Enable low indicates a read to external RAM or other devices 196 ROMOE ROM Output Enable low output indi cates a read from external ROM. 197 ROMWE ROM Write Enable low indicates a write to external ROM. 198 CS0 Chip select signal 199 CS1 Chip select signal 193 NMI Non-maskable Interrupt Microprocessor address bus output bits 164173 A1A19 184187 192 Microprocessor 16-bit bidirectional data bus 148163 D0D15 Peripheral Interface Pin Descriptions 207 PORTA0 DISPEN signal output(PDP display control) 206 PORTA1 READY signal inputPDP display ready 205 PORTA2 SDA 204 PORTA3 SCL 203 PORTA4 IR receive signal input 201 PORTA6 DVI digital interface select control 203 PORTA4 IR receive signal input 57 60 PORTB0 58 Key control input PORTB7 64 39 PORTC0 MA-EN enable control 40 PORTC1 480ISEL 480I anti-copy control 41 PORTC2 RST-1235 PW1235 reset 42 PORTC3 DIGSEL DVI digital interface select 43 PORTC4 LVDSON LVDS enable control 44 PORTC5 S0 sound system control 4546 PORTC6 LED control PORTC7 67 RXD Serial Receive Data 68 TXD Serial Transmit Data Miscellaneous Pin Descriptions 142 TEST Test mode enable 139 RESET Bidirectional reset pin 169 XI Crystal input 170 XO Crystal output Power and Ground Pin Descriptions VDD1 1.8V digital core power. 16376584137185 VSS Digital core ground 17386685138186 3.3V digital I/O power. 29527286104123 VDDQ3 140171208 Digital I/O ground. 130537387105124 VSSQ 141172 165 VDDPA2 1.8V analog clock generator power. 166 VSSPA2 Clock generator analog ground. 167 VDDPA1 1.8V analog clock generator power. 168 VSSPA1 Clock generator analog ground.
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PW113
Block Diagram
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2.2.4PW1235 General PW1235 supports standard digital video signal incorporates deinterlacing scaling .the PW1235 is able to effectively deinterlace video input by creating motion vectors that follow frame-to-frame movement, and provide clear, progressive output in both analog and digital formats. The PW1235 integrates input interfaceMEMORY control circuitpicture improve output interface circuitI2C bus interface and so onall the function are controlled by I2C bus Pin Function Descriptions Pin(s) Name Video Port Pin Descriptions 27 PVVS 28 PVHS 25 PVCLK 26 CREF 12 SVVS 11 SVHS 13 SVCLK 30333538 VR0VR7 15182023 VG0VG7 1469 VB0VB7 Digital/Graphics (DG) Port Pins 68 DGCLK 67 DGVS Function Primary Video (PV) Port vertical sync input. Port horizontal sync input Port pixel clock input Video input clock reference Port (ITU-R BT656 format) vertical sync input Port (ITU-R BT656 format) horizontal sync input Port (ITU-R BT656 format) pixel clock input Video port red data input Video port green data input Video port blue data input Digital/Graphics (DG) port pixel clock
Digital/Graphics (DG) port vertical sync. 66 DGHS Digital/Graphics (DG) port horizontal sync Digital/Graphics (DG) port red data 91929495 DGR0DGR7 97100 81848689 DGG0DGG7 Digital/Graphics (DG) port green data. 7073,7576 DGB0DGB7 Digital/Graphics (DG) port blue data 7879 Analog Display Port Pin Descriptions 156 ADR Analog display port red (V/Pr) data 153 ADG Analog display port green (Y/Y) data 150 ADB Analog display port blue (U/Pb) data 161 VREFIN Reference voltage input. 162 VREFOUT Reference voltage output. 159 RSET Full-Scale adjust resistor 160 COMP Compensation pin Digital Display Output Port Pin Descriptions 102 DCLK Digital display output port pixel clock 103 DVS Digital display output port vertical sync 104 DHS Digital display output port horizontal sync. 108 DENR Display pixel enable red/Vertical blanking period (VBLANK) 106 DENG Display pixel enable green 107 DENB Display pixel enable blue/Horizontal blanking period (HBLANK) 145 DEN Digital display output port output enable Digital display output port red data 132 133 DR0DR7 135 136 138 139
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141142 121 122 DG0DG7 124 125 127130 110 111 DB0DB7 113 114 116119 Memory Pin Descriptions 229 MCLK 223 MCLKFB 225 MRAS 226 MCAS 227 MWE 213 210 207 204 MA0 203 206 209 211 MA13 214 217 215 220 221218 255 252 248 245 MD0 MD15 242 239 236 232 231 234 238 241 244 247 250 254 Host Interface Pin Descriptions 47 2WDAT 45 2WCLK 43 2WA1 44 2WA2 178 179 181186 MCUD0 MCUD7 168170172 PORTB1 174176177 190 MCUCS 191 MCUWR 192 MCUCMD 188 MCURDY Miscellaneous Pin Descriptions 56 TEST 144 TESTCLK 55 RESETn 40 XTALI 41 XTALO 146 CGMS 201 MVE 62, 63, 194,195 NC System Power Pin Descriptions 5, 34, 93, 123,140, VDD 175,205, 235 19, 49, 77, 112, VSS 134, 187, 219, 251
Digital display output port green data.
Digital display output port blue data.
SDRAM clock SDRAM clock feedback SDRAM row address strobe SDRAM column address strobe SDRAM write enable SDRAM address bus
SDRAM data bus
SDA SCL Programmable two-wire serial bus address bit 1 Programmable two-wire serial bus address bit 2 MCU data bus MCU address bus Chip select MCUR/W signal MCU command signal MCU Ready signal Test mode Used for testing, can be used to supply display clock Hardware asynchronous reset. Crystal oscillator input Crystal oscillator output CGMS Enable Macrovision write protected enable
Digital core power (2.5V). Digital core ground.
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14, 29, 42, 54, 64, 69, 80, 90, 101, 109, 120, 131, 143, 165, 180, 200, 208, 216, 224, 230, 237, 243, 249, 256 10, 24, 39, 46, 57, 65, 74, 85, 96, 105, 115, 126, 137, 147, 171, 189, 193, 202, 212, 222, 228, 233, 240, 246, 253 60 61 58 59 197 196 199 198 157 154 151 158 155 152 163 164 149 148 166 167
PVDD
Digital I/O power (3.3V).
PVSS
Ground.
MPAVDD MPAVSS MPDVDD MPDVSS DPAVDD DPAVSS DPDVDD DPDVSS AVD33R AVD33G AVD33B AVS33R AVS33G AVS33B ADAVDD ADAVSS ADDVDD ADDVSS ADGVDD ADGVSS
Memory PLL analog power 2.5V. Memory PLL analog ground. Memory PLL guard ring / digital power 2.5V. Memory PLL guard ring / digital ground. Display PLL analog power 2.5V. Display PLL analog ground. Display PLL digital power 2.5V. Display PLL digital ground. Analog power (+3.3V) for R (V/Pr) channel. Analog power (+3.3V) for G (Y/Y) channel. Analog power (+3.3V) for B (U/Pb) channel. Analog ground for R (V/Pr) channel. Analog ground for G (Y/Y) channel. Analog ground for B (U/Pb) channel. Analog power supply (+2.5V) for the analog display port. Analog ground for the analog display port. Digital power supply (+2.5V) for the analog display port. Digital ground for the analog display port. Guard ring power for the analog display port. Guard ring ground for the analog display port.
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PW1235 Block Diagram
2.2.5TA2024 general:
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The TA2024 is a 10W/ch continuous average two-channel Class-T Digital Audio Power Amplifier IC using Tripath's proprietary Digital Power ProcessingTM technology. Class-T amplifiers offer both the audio fidelity of Class-AB and the power efficiency of Class-D amplifiers. Pin Function Descriptions Pin(s) 2, 3 4, 9 5, 8, 17 6 7 1014 11, 15 12 16 18 19 20, 35 22 24, 27; 31, 28 25, 26, 29, 30 13, 21, 23, 32, 34 33 36 1 Name DCAP2, DCAP1 V5D, V5A AGND1, AGND2, AGND3 REF OVERLOADB OAOUT1, OAOUT2 INV1, INV2 MUTE BIASCAP SLEEP FAULT PGND2, PGND1 DGND OUTP2 & OUTM2; OUTP1 & OUTM1 VDD2, VDD2 VDD1, VDD1 NC VDDA CPUMP 5VGEN Function Charge pump switching pins Digital 5VDC, Analog 5VDC Analog Ground Internal reference voltage A logic low output indicates the input signal has overloaded the amplifier Input stage output pins. Single-ended inputs Mute control Input stage bias voltage Sleep mode control A logic high output indicates thermal overload Power Grounds (high current) Digital Ground Bridged outputs Supply pins for high current H-bridges, nominally 12VDC. Not connected Analog 12VDC Charge pump output Regulated 5VDC source used to supply power to the input section (pins 4 and 9).
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TA2024 Block Diagram
2.2.6DS90CF383A General The DS90C383A/DS90CF383A transmitter converts 28 bits of CMOS/TTL data into four LVDS (Low Voltage Differential Signaling) data streams. A phase-locked transmit clock is transmitted in parallel with the data streams over a fifth LVDS link. Every cycle of the transmit clock 28 bits of input data are sampled and transmitted. At a transmit clock frequency of 65 MHz, 24 bits of RGB data and 3 bits of LCD timing and control data (FPLINE, FPFRAME, DRDY) are transmitted at a rate of 455 Mbps per LVDS data channel. Using a 65 MHz clock, the data throughput is 227 Mbytes/ sec. The DS90C383A transmitter can be programmed for Rising edge strobe or Falling edge strobe through a dedicated pin. The DS90CF383A is fixed as a Falling edge strobe transmitter.
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Pin Function Descriptions Pin(s) 1,9,17,26,34 44 5,13,21,29,53 33,35,36,43,49 2,3,50,51,52 54,55,56 4,6,7,11,12,14 8,10 15,19,20,22 23,24,8,16 27 28 30 31 32 37,38,41,42 45,46,47,48 39,40 Name VCC GND DRE0DRE7 DGE0DGE7 DBE0DBE7 HSYNC VSYNC DE TXCLK IN Power supply Ground 8bit red data input 8bit green data input 8bit blue data input Horizontal Sync input Vertical Sync input pixel display enable pixel display clock input LVDS control 4 channels LVDS data signal output 1 channel LVDS clock signal output Function
PWRDWN
TXOUT+ TXOUTTXCLKOUT+ TXCLKOUT-
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DS90CF383 Block Diagram
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2.2.7DVI Digital Receiver SiI161B
General
The Sil161B receiver uses Panel Link Digital technology to support high-resolution displays up to UXGA. The Sil161B receiver supports up to true color panels (24 bit/pixel, 16.7M colors) in 1 or 2 pixels/clock mode. In addition, the receiver data output is time staggered to reduce ground bounce that affects EMI. All Panel Link products are designed on a scaleable CMOS architecture. This ensures support for future performance requirements while maintaining the same logical interface. With this scalable architecture, system designers can be assured that the interface will be fixed through a number of technology and performance generations.
Pin Function Descriptions Pin(s) 90 91 85 86 80 81 93 94 4956 5966 6975,77 1017 2027 3037 99 100 1 Name RX0+ RX0RX1+ RX1RX2+ RX2RXC+ RXCQO0QO7 QO8QO15 QO16QO23 QE0QE7 QE8QE15 QE16QE23 RESERVED OCK_INV HS_DJTR Function TMDS Low Voltage Differential Signal input data pairs TMDS Low Voltage Differential Signal input data pairs TMDS Low Voltage Differential Signal input data pairs TMDS Low Voltage Differential Signal input data pairs TMDS Low Voltage Differential Signal input data pairs TMDS Low Voltage Differential Signal input data pairs TMDS Low Voltage Differential Signal input clock pair. TMDS Low Voltage Differential Signal input clock pair. 8bit odd-pixel Blue output 8bit even-pixel Green output 8bit odd-pixel Red output 8bit even -pixel Blue output 8bit even -pixel Green output 8bit even -pixel Red output Must be tied HIGH for normal operation. ODCK Polarity. A LOW level selects normal ODCK output. A HIGH level selects inverted ODCK output. This pin enables/disable the HSYNC dejitter function. To enable the HSYNC function this pin should be tied high. To Power Down (active LOW). A HIGH level indicates normal operation. A LOW level indicates power down mode. Output Drive. A HIGH level selects HIGH output drive strength. A LOW level selects LOW output drive strength. Pixel Select. A LOW level indicates one pixel (up to 24-bits) per clock mode using QE[23:0]. A HIGH level indicates two pixels (up to 48-bits) per clock mode using QE [23:0] for first pixel and QO[23:0] for second pixel. Staggered Output. A HIGH level selects normal simultaneous outputs on all odd and even data lines.
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2
PD
3
ST
4
PIXS
7
STAG_OUT
8
SCDT
9
PDO
44 46 47 48 18,29,43,57,78 19,28,45,58,76 6,38,67 5,39,68 82,84,88,95 99,83,87,89,92 97 98 96
ODCK DE VSYNC HSYNC OVCC OGND CVCC GND DAVCC AGND PVCC PGND EXT-RES
A LOW level selects staggered output drive. Sync Detect. A HIGH level is outputted when DE is actively toggling indicating that the link is alive. A LOW level is outputted when DE is inactive, indicating the link is down. Output Driver Power Down (active LOW). A HIGH level indicates normal operation. A LOW level puts all the output drivers only (except SCDT and CTL1) into a high impedance (tri-state) mode. Output Data Clock. This output can be inverted using the OCK_INV pin. Output Data Enable. Vertical Sync input control signal. Horizontal Sync input control signal. Output VCC Output GND Digital Core VCC, Digital Core GND. Analog VCC Analog VCC PLL Analog VCC PLL Analog GND. Impedance Matching Control. In the common case of 50 transmission line, an external 390 resistor must be connected between AVCC and this pin.
SiI161B Block Diagram
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CHAPTER 3 CHANGHONG PDP TELEVISON PT4206 entire signal flow analyse
3.1Each part signal Disposal Flow general 3.1.1Analog signal Disposal Flow
3.1.1 .1RF Disposal TDQ-6F7-FMW2 disposal the RF signal Pin Function Descriptions Pin(s) Name Function 1 VT Analog tune voltagenot use 2 BTL +32Vpower 3 BM +5V power 4 ADD Ground 5 S0 Color system Switch control 6 S1 Color system Switch control 7 SCL I2C busclock 8 SDA I2C busdata 9 SIF Second sound IF signal output 10 VIDEO OUT video signal output 11 VIF Power supply 12 AUDIO OUT Sound LF signal output(not use) First the antenna signal enters the Unify RF TUNER N901, enlarge the RF signal , choose the back track of frequent and mix frequent circuit ,and outputs the IF signal. The video signal from the 9 pin through the video check wave, differs to clap at the same time the Second sound IF signal output. The frequency synthesizing and tuning needs two power supplies when work normally:+ 32 V tune voltage and + 5 V PLL power supply. Moreover 5 and 6 pin of N901 switch the Color system , sending out from 44 and 50 pin of PW113.10 pin of N901 outputs video signal ,follows to Q905 ,through the video switch circuit switching with the AV/ S- VIDEO Input signal ,after them disposal in VPC3230.
3.1.1 .2
SOUND Disposal
the 9 pin of N901 outputs the second sound IF signal, enlarged by the Q910,following to Q602 and passing C611 to the 67 pin of MSP3410G to carry on SIF demodulation and the NICAM identify the decodingThe sound of PC, DVI, AV, YCbCr, and YPbPr are transited to MSP3440, and then input to the speakers after transits to TA2024 and to the speakers.
. 3.1.1.3
digital signal disposal
In response to input signal of PW113 ,it must convert the input analog video signal, VGA analog signal and DVI signal into digital or video decode output include three parts one, VGA or
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YpbPr (analog signal)is converted the signal into A/D by MST9885it is 24bit digital tricolor signalsecond various video signalsinclude TV signal are disposalled by VPC3230 then output the signal format ITU-R656 YUV signalThe third part decode DVI1.0 standard digital signal then output 24bitRGB signal
3.1.1 .4
VGA/YpbPr analog signal disposal
R, G, B signal From the VGA 1, 2, 3 pin through the static electricity protection circuit switches with video signal from YpbPr input port in PI5V330. After then RGB
signal(PC source) pass C81C82C84 to 544843 pin of MST9885 and A/D converter in it
Moreover , Vertical , Horizontal sync from the VGA 13,14 pin also send to the synchronous pulse orthopedics circuit after static electricity protect processing. Horizontal sync after face lifting in 74LCX32 sends to the PI5V330 to the switch , and then feedback to the 30 pins of MST9885, By the effect of Horizontal sync , MST9885 creates PLL lock providing the MST9885 work clock. Vertical sync after buffer and enlarge in U71 outputs from the 6 pin of U71, and choices in U9(74 LVC126s).In VGA mode ,the signal to the 31 pin of MST9885, provides a Vertical sync to the MST9885. The PDP display is the exterior equipments, and need an identify signal to examined by host when host communication. The 24LC21s of U8( EEPROM) saves the hardware concerning display parameter.( install etc. such as the factory, model number, resolution)
MST9885 under the control of PW113 bus, converts the R,G,B input 8 bit digital R,G,B signal. 67 pin outputs pixel clock signal DATACKThe above signal sends to the PW113
and PW1235s at the same time, disposals the format judged by PW113. 3.1.1.4 Analog video signal disposal
9 pin of N901 outputs video signal passes VN901 and goes to 1 pin of TEA6425Dat the same time 1 channel AV video signal sends to the 8 pin of TEA6425Dand other channel S-video signal (YC signal) sends to 65 pin of TEA6425D respectively. The three signals switches in the TEA6425D. VIDEO or Y signal outputs toVPC3230D from 17pinC signal outputs from 18pinat the same time 19 pin video outputs from19 pinVPC3230 The signal from TEA6425 after switch and A/Dsend to chroma decode circuit ,which can identify PAL/NTSC/SECAM signal automatically and to each decode after identify. Such as NTSC video after identify the system switches the TEA6425D channel sends to NTSC 3D comb filter from 14 pin of TEA6425D. After digital 3D comb filter in uPD64083 YC signal sends back to 7371pin of VPC3230D AD convertor and saturation control etc. The output digital YUV signal to switches with digital YUV signal after A/D which inputs from 456pinand outputs digital YUV signal sends to video disposal include zoom contrast panorama mode brightness gain control
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tc. After then the signal transforms to from 3140pin digital YUV signal4:2:2(ITU-R656 format )and sends to PW1235 to DEINTERLACE etc
3.1.1 .5 DVI digital signal disposal
We use DVI-D interface DVI digital signal4channels DS signalfrom DVI jack each send to 90918586 80819394pin of SiI161B. By the control of 1003pin (input bus)after in SiI161B(VCR data resumesync. Head test enlarge circuitdecode circuit and logic interface circuit)it outputs digital R G B signal which has two mode mode when 4 pin of SiI161B is low one it output 24bit even pixel when 4pin is high it output 48biteven and odd pixel data connect we 4pin to groundso each signal from 101720273037pin outputs R,G,B even pixel data switch with 24bit VGA digital signal disposalled by MST9885and send to PW113 to transform formatfor sure ,the choice is control by PW113 DVI interface 67pin is DDC data channel U724LC21Ais an E2ROMwhich stores some DVI data parameter information connect to DDC data channel by bus the moment of it at power on the status information is sent to host to identifyafter identifyaccording to E2ROM information outputs digital signal correctly VGA signalvideo signalDVI signal after digital disposalsends to video format disposal ic PW113 to change display driver PW113 the input video signal after disposalled by PW113 outputs 852×480 resolution digital R,G,B signal which fits PDP panel spec and relevant syncclock signal and transform them into LVDS by DS90CF383send to PDP panel to control the panel display correctly the video format outputs the digital R,G,B signal which fits PDP
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3.2 each information flow 3.2.1 TV
S0
S1 MSP3410G FmorNICAM demodulation SIF 67 SRS(WOW)
Tuner demodulation
RF
sound disposal
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CVBS 1 TEA6425 video switch NTSC video 16 MUTE
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TA2024 sound
amplifier
17 Sync 88 74 VPC3230 Identify color system Main control signal 1RST1# High enable 2STANBY control Low is power ON 3 MUTE high mute 4sound switch S0S1 Digital video and clock SV D/K BG I SDRAM PW1235 I channel M BUFF ER PW1235E 0 0 SO S1 1 0 1 1 0 1 When NTSC, Change the video switch by bus uPD64083 comb filter
separate
83
84
Not NTSC Y 73 VPC3230 decode 71
C
5PW1235Econtrol High enable BUFFER and polarity controlled by Q3 6LVDSON control
PW113 SCALER D
LVDSON
DS90C383
LVDS output
30
3.2.2 AV
L R cvbs 53 MSP3410G Sound switch
54 SRS(WOW) sound disposal 27 28
8 TEA6425 NTSC 16 video switch MUTE TA2024 sound amplifier
17
NTSC
switch by bus
Sync separate
88 uPD64083 comb filter
74 VPC3230 Identify color system
83
84
Not NTSC Y 73 VPC3230 decode 71 Digital video and clock SV
C
SDRAM
PW1235
I channel
BUFF ER PW1235E
PW113 SCALER D
LVDSON
DS90C383
LVDS output
31
3.2.3 S-VIDEO
Y 6
C 5 L R 53 54 MSP3410G
Sound switch SRS(WOW)
TEA6425 video
switch
17 Y 74 18 C 72
sound disposal 27 28
VPC3230 decode MUTE Digital video and clock SV PW1235 I SDRAM channel TA2024 sound amplifier
PW1235E
BUFF ER
PW113 SCALER D
LVDSON
DS90C383
LVDS output
32
3.2.4 YcbCr
L R CVBS 8 NTSC video 16 TEA6425 video switch 17
Sync. separate When NTSC,switch video signal
MSP3410G 53 Sound switch SRS(WOW) sound disposal 54 27 28
TA2024 sound amplifier MUTE
88 uPD64083 comb fliter
74 VPC3230
83
84
Not NTSC Y 73 71 Digital video and clock SV VPC3230 decode
C
DS90C383 LVDSON
SDRAM
PW1235
I
channel
LVDS output
PW1235E PW113 SCALER BUFF ER
disposal
D
LVDSON
DS90C383
LVDS output
33
3.2.5 YpbPr
Y 5
Pb Pr 11 2
L 47
R 48
VGASEL
1
PI330 switch
4 R 7 G 9 B 43
MSP3410G Sound switch 27 28
SRS(WOW) sound disposal
54 48
AD9883
MUTE
TA2024 sound amplifier
BUFF ER PW1235E G PW113 Format identify
PW113 SCALER
D
LVDSON
DS90C383
LVDS output
34
3.2.6 VGA
HS R 13 3 VGASEL 1
G
B
L 50
R 51
6 10
MSP3410G
PI330 switch
12 4 HS R 7 G 9 B
Sound switch SRS(WOW) sound disposal 27 28
30 54 48 43 TA2024 sound amplifier VS U9 31 MST9885 MUTE
G PW1235 P SDRAM channel
BUFF ER PW1235E G
Not standard modeadjust AD9883 switch the channel Main control signal 1RST1# High enable PW113 2STANBY control Foemat identify Low is power ON Signal after vertical sync 3 MUTE High mute 4VGASEL control 640X480800X600@60Hz signal High enable 5PW1235E control High enable BUFF G PW113 SCALER BUFFER and polarity are controlled by Q3 ER D D 6LVDSON control PW1235E LVDSON DS90C383
LVDS output
35
3.2.7 DVI
Digital RGB or YPbPr
L 50
R 51 MSP3410G
SiL161
Sound switch SRS(WOW) sound disposal 27 G PW1235 P channel SDRAM BUFF ER PW1235E MUTE Not standard mode Switch the channel TA2024 28
sound amplifier
D
G
PW113 Format identify Signal after vertical sync change vertical sync 60HZ signal
BUFF ER
G
PW113 SCALER
D PW1235E LVDSON DS90C383 LVDS output
36
3.3system control process
After connect the AC power input (we use 3 pins power jackthe GND pin must ground well).first of all ,standby power workssignal mainboard takes 5V-ST power supply the powers of PW113 begin to workLED turns red. Resetting after V18V33 power is normal PW113 initializes the system sends STANDBY L signal which controls main power begins to workother power VT9VT5AVCCPVDDAVDDOVCCCVCCPVCCDAVCC AVDD AVCC DVDA PVDD also work normally.MST9885 VPC3230 SiI161B DS90CF383 take proper power supply. Moreover LED signal control LED to turn yellow and glitterit is said that it controls normally At last LVDSON signal from 43pin of PW113is highit let DS90CF383 begin to workAfter this it is in normal work stateinput source is last time source before power off 3.3.1when choice VGA mode by remote device PW113 controls MST9885 by I2C busenable SiI161B and VPC3230let them work in low consume modewhich can save power and reduce interfereAt the moment VGASEL signal from PW113 output parks VGA input channel in PI5V330. If VGA signal inputs, MST9885 outputs Horizontal and Vertical Sync signal and data signaland send to PW113which outputs format commutation data . After DS90CF383(DS transmitter) transforms to the signal fitting the PDP panel demand because it SiI161BDS90CF383 both in normal work statewhen DVI signal inputs, display videoif no VGA signal MST9885 can not output digital Horizontal and Vertical Sync signal after examined by PW113,displays pc icon on the left and top of PDP panel other part display black. If no input after 60 sec, it hints to enter "save power mode" At the moment , MST9885 in normal work state examines VGA signal ceaselessly it can arouse automatically in VGA mode. It is so said that when VGA signal inputs, it can work normally from standby state 3.3.2when in TVAVYCbCr mode by remote devicePW113 controls VPC3230 by 2 I Cbusotherwise PW113 controls MST9885 on the fly output in high impedance stateby I2Cbus.Because tuner N901VPC3230 DS90CF383 all in normal work statewhen video signal inputs PDP panel display normally no video signal input if under the control of PW113 PDP panel displays blue backgroundif no signal 15 minspower off automatically and into standby state. It can not arouse automatically 3.3.3When in DVI(digital RGB) mode by remote devicePW113 controls SiI161Band enables VPC3230 let it working in low consume mode and otherwise PW113 controls MST9885 2 on the flyoutput in high impedance stateby I C busbecause SiI161BDS90CF383 both in normal work statewhen DVI signal inputs, display videoif no DVI signalSiI161B do not output digital Horizontal and Vertical Sync signal after examined by PW113,displays DVI icon on the left and top of PDP panel other part display black. If no input after 60 sec, it hints to enter "save power mode"work stateAt the moment ,SiI161B in normal work state examines DVI signal ceaselesslyso it can arouse automatically in DVI mode. It is said that when DVI signal inputs, it can work normally from standby state
37
3.4power supply system 3.4.1main power supply
D6Vsteady voltage to 5V supply for VPV3230AD9883 analog power5V-STstandby powerto PW113AM29LV800BTROM 24LC32MAX202EVDD(3.3V)VPC3230 MST9885DS90CF383 power+32VRF tuner tuning powerA6Vsteady voltage to Av board 5V etc. A12Vsteady voltage to AV board 8V etc.12VAMPsound amplifier TA2024 power
3.4.2 main power form and power branch 3.4.2.15V-STpower branch
U16 PW113 29527286104123140 171208pin
N803 LM1117-3.3
VUU
U19
24LC32 8pin
U17
29LV800B 37pin
XP801 2 pin
5V-ST
N804 LM1117-1.8
VLL
U16 PW113 16376584137185pin
VPP
U16 PW113 165167pin
NK605 remote head XP101 11 pin K board connect XPK3 11pin VDK1 LED U20 MAX202E
38
3.4.2.2D6V power branch
U1 VPC3230
U5 PI5V330 16 pin
XP801 11 pin
D6V
N802 TA4805F
VCC
U27 LM1117-3.3
VFF
U6 AD9883A 262739424546 51525962 pin
U26 LM1117-3.3
VEE
U6 AD9883A 3435 pin
U3 PW1235 53493123140 175205235 pin
U28 LM1086CSX-2.5
VXX VYY
U3 PW1235 197199 pin
VZZ
U3 PW1235 5860 pin
2.5
U3 PW1235 149163166 pin
39
3.4.2.3VDD(3.3V) power branch
U10/U12/U14/U15 74LVC16244 7183142 pin to reduce interference U11 power is divided into VDDVIIVJJ by LC filter 97 pin is VII power82 848895 pin are VJJ power
U11 SiL161B 618293843576778 8284889597pin
U4 IS42S16400(A)-7T 13914274349pin
U3 PW1235 1429425464698090101109120131143165 180200208216224230237243249256pin
U3 PW1235 515457pin
XP801 8 9pin
VDD
U22 DC90C383 1926pin
VNN
U22 DC90CF383 34pin
VNNVOO is in order to reduce the interference from VDD after LC filter
VOO
U22 DC90CF383 44pin
U6 AD9883 11222369 7879pin
U71
74LV32 14pin
U1 VPC3230 10293645 52pin
40
3.4.2.4A6Vpower branch
XP805 1pin A6V N806 TA4805F VCC N601 MSP3410G 6566pin
N601 MSP3410G 111213pin
N805 TA4805F
5VTUNER
N901 TDQ-6F7 311pin
TV videoSIF follow amplifer circuit
N650 TA4805F
5V2
N702 LM1117-2.5
A2.5V
U701 uPD64083 538192 93pin
D2.5V N701 uPD64083 3132454664 100pin
N703 LM1117-3.3
D3.3V
N701
uPD64083 38pin
5V-3D
N701 small signal filter amplifer circuit
N701 input video and output YC filter amplifer circuit
41
3.4.2.5A12Vpower branch
XP805 3pin
N651 TA78M08
+8V
PC/YPbPr sound amplifer
N902
TEA6425D 20pin
N601
MSP3410G 39pin
AVOUT sound amplifer
42
Part:Typical Defectives and Repair of PT4206 onered led do not light
red led do not light
Check K board iack XK01 11 pin 5V power
yes
Check jack XP901 2 pin 5V power supply
no
Check mainboard jack XP801 2 pin 5V power
Y N
Check resistance RK2 LBD VDK1 1Check XP801 2 pin short circuit to ground whether or not 2Check mainboard L801 3 Check PW113 reset circuit clock circuit yes no Check power filter and power jack AC 220V input
Check circuit connect
43
twoThe red led lightsbut doesn't turn to yellow after power on and black display
power oncheck XP801 4 pin standby is low0.5Vvoltage
check N803N804 output voltage
No
1check PW113 power impedance 2checkN803 N804
Yes yes check X3 14.318M crystal 1check connector 2check PDP power no checkXP801 D6VVDD No change Y2 crystal
Yes check PW113 RESET pin voltage Yes
yes
No
check resetcircuit
check bus circuit and PCB wire
abnormality
I2Cbus
check AM29LV800BT to PW113 addressdata control
normal 1check VPC3230PW1235 power circuit 2check VPC3230PW1235 reset voltage 3check VPC3230PW1235 peripherally circuit
change AM29LV800BT or PW113 and wire between them
44
threeThe red led lightbut turn to other color after power on and black display
change switch find if there is icon on the screen No
Yes
follow no picture to check
check mainboard J15check the line
Yes
mend
No 1LVDS ON is hign or not 2check PW113 syncpixel clockRGB data sinal Yes check PW113 output port change PW113
check LVDS signal
No
No
Yes check PW113 syncpixel clockRGB data sinal Yes check crystal frequentcheck PW113change
checkDS90c383 power supply
No
check power supply
Yes
check DS90C383 change
45
fourno picture
check if there is a icon to display when source switches No CHECK PW113 G-Port 31-35 pin changePW113
other part is following no picture only VGA no picture only DVI
check AD9883A 3031 pin sync
No
check sync face lifting circuit and I/O sync wave input abnormality
output abnormality
check SiI161B/169 4448 4742pin GCLKGHS GVSGFBK
part abnormality
Yes
all abnormality
check VGA jack
check sync face lifting circuit and peripherally circuit
checkSiI161B/169 control signal
1check signal source 2DVI jack 3change Sii161B
abnormality
change AD9883A
46
if there is one state to display when switch the source
TVAVS-VDEO YCbCr all no picture
only TVAV S-VIDE Ono picture
only TVAV is NTSC no picture
only TV no picture
check PW1235 power clock
repair abnormality
check AV board connector
check TEA6425D14 pin video outout
No
checka nd change TEA642 5D
Yes
check TEA6425D1 pin video signal input
joint well
Yes check uPD64083 I/O filter and amplifer circuit check TDQ-6F7 powerbus and video followwing outout circuit
check VPC3230 output
Yes
check and change PW1235
check TEA6425D I/O
No check VPC3230 power clock periphery circuitchange VPC3230
input well,but output bad check TEA6425 powerbus change TEA6425 check uPD64083 resetclock power changeuPD64083
check and change TDQ-6F7
47
Five picture dissimilation
picture dissimilation
mosaic phenomena
colour dissimilation
all panel green
follow next picture
check PW113 power
No
check liner voltage circuit
source switch if one mode is well or not
checkDS90C383A (37)-(42)(45)-(4 8)
change PW113 only VGA colour dissimilation No change memorizer U19 24LC32A check PW113 and U19 only DVI colour dissimilation all colour dissimilation
change DS90C383A repair output connector
check AD9883A and 74LV16244 RGB digital signal
check Sil161B and 74LV16244 RGB digital signal
check mainboard panel jack
normal normal change U8 24LC21A check56 pin normal changeu7 24LC21Acheck 56 normal DS90C383A
normal check PW113 output video siganl
48
picture dissimilation
lack colourno Rno G,no B
lack front one analog signal
plane crossband interference
VGA state
AV/TV state
only VGADVI not commendatory state
VGA mode commendatory state
DVI mode commendatory state
check C81C82 C84
check PW1235 output data
No
check and change PW1235
change U8 check5(6) pin
change U7 check5(6) pin
checkPI5V330
check VPC3230 output
checkAD9883A and peripherally device
check SiI161B and peripherally device
check L901 L902L905 R904R909R910
check VPC3230 input signal
change AD9883A
check and change VPC3230
49
sixno sound or small sound
no sound or small sound
check XP302 XP303sound box connector
check XP302 XP303 outputsignal
Yes
change sound box
check TA2024 input signal
normal
check TA2024 powermute
normal
check and change TA2024
check MSP3410G output signal
Yes
check MSP3410G output coupling circuitC629 C630FB5FB6C522C543
check MSP3410G input signal
TV
check 67 pin SISF input
checkTDQ-6F7outp abnormality check and change TDQ-6F7 utSIFsignal
other source
Yes check MSP3410G powerclock resetbus
normal check SIF filter amplifer circuit
check sound input
Yes
no input check signal sourcesound jackinput coupling circuit
normal
check and change MSP3410G
50
Annex 1
51
Annex 2
52
53