8. Waveforms 9. Trouble Shooting 10. Block Diagram 10-1 11. Spare parts list 11-1 12. Complete Parts List 12-1 Appendix 1. Main Board Circuit Diagram 2. Main Board PCB Layout 3. Assembly Explosion Drawing Block Diagram VIZIO VX32L HDTV Service Manual...
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Use a power cable that is properly grounded. Always use the AC cords as follows – USA (UL); Canada (CSA); Germany (VDE); Switzerland (SEV); Britain (BASEC/BS); Japan (Electric Appliance Control Act); or an AC cord that meets the local safety standards. VIZIO VX32L HDTV Service Manual...
Chapter 1 Features 1. Built in TV channel selector for TV viewing 2. Simulatnueous display of PC and TV images 3. Connectable to PC’s analog RGB port 4. Built in S-video, HDTV, composite video, HDMI and TV out 5. Built in auto adjust function for automatic adjument of screen display 6.
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Chapter 2 Specification 1. LCD CHARACTERISTICS LC320W01 Item Specification 31.51(800.4mm) inch diagonal Active Screen Size 760.0mm(H) x 450.0mm(V) x 48.0mm(D) (Typ.) Outline Dimension 0.17025mm x 0.51075mm xRGB Pixel Pitch Pixel Format 1366 (R,G,Bx3) x 768 Display Color 16.7 M (8-bit + FRC for R,G,B) Luminance, White 500 cd/m (Typ)
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5. POWER SUPPLY Power Consumption: 180W MAX Power OFF: to less than 3W MAX 6.Speaker Output 10W (max) X2 7. ENVIRONMENT 7-1. Operating Temperature: 5c~35c (Ambient) 7-2. Operating Humidity: Ta= 35 °C, 90%RH (Non-condensing) 7-3. Operating Altitude: 0 - 14,000 feet (Non-Operating) 8.
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(5) Acetic acid type and chlorine type materials for the cover case are not desirable because the former generates corrosive gas of attacking the polarizer at high temperature and the latter causes circuit break by electro-chemical reaction. (6) Do not touch, push or rub the exposed polarizes with glass, tweezers or anything harder than HB pencil lead.
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9-3. HANDLING PRECAUTIONS FOR PROTECTION (1) The protection film is attached to the bezel with a small masking tape. When the protection film is peeled off, static electricity is generated between the film and polarizer. This should be peeled off slowly and carefully by people who are electrically grounded and with well ion-blown equipment or in such a condition, etc.
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Chapter 3 On Screen Display Main unit button Power MENU CH ▲ CH ▼ VOL + VOL - Input TV Source A. PICTURE: a. PICTURE MODE (CUSTOM/ STANDARD / MOVIE / GAME) b. BACKLIGHT (0~100) c. BRIGHTNESS (0~100) d. CONTRAST (0~100) e.
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B. AUDIO: a. VOLUME (0~100) b. BASS (0~100) c. TREBLE (0~100) d. BALANCE (-50~50) e. SURROUND (ON/OFF) SPEAKERS (ON/OFF) C. TV: a. TUNER MODE (ANTENNA/CABLE) b. AUTO SEARCH (RUN) c. SKIP CHANNEL (TABLE) d. TIME ZONE (HAWALL/EASTTERN/INDIANA/CENTRAL/MOUNTAIN/ARIZONA/PACIFIC/ALA SKA) e. Daylight Saving(ON/OFF) D.
e-7. WINDOW COLOR (GREEN/BLUE//RED/CYAN/YELLOW/MAGENTA/BLACK/WHITE) e-8. WINDOW OPATITY (SOLID/TRANSLUCENT/TRANSPARENT) RESET ALL SETTING E. PARENTAL: a. PASSWORD a-1. CHANNEL BLOCK a-2. TV RATING a-3. MOVIE RATING a-4. BLOCK TV UNRATED a-5. ACCESS CODE EDIT RGB Mode A. PICTURE ADJUST: a. AUTO PICTURE (Run) b.
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C. SETUP: a. LANGUAGE (ENGLISH/FRENCH/SPANISH) b. SLEEP TIMER (OFF/30/60/90/120) RESET ALL SETTING AV COMPONENT MODE AV-C、AV-S、COMPONENT A. PICTURE: a. PICTURE MODE (CUSTOM/ STANDARD / MOVIE / GAME) b. BACKLIGHT (0~100) c. BRIGHTNESS (0~100) d. CONTRAST (0~100) e. COLOR (0~100) TINT (-32~32) g.
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B. AUDIO: a. VOLUME (0~100) b. BASS (0~100) c. TREBLE (0~100) d. BALANCE (-50~50) e. SURROUND (ON/OFF) SPEAKERS (ON/OFF) D. SETUP: a. LANGUAGE (ENGLISH/FRENCH/SPANISH) b. SLEEP TIMER (OFF/30/60/90/120) c. RESET ALL SETTING E. PARENTAL: a. PASSWORD a-1. CHANNEL BLOCK a-2. TV RATING a-3.
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HDMI MODE: A. PICTURE: a. PICTURE MODE (CUSTOM/ STANDARD / MOVIE / GAME) b. BACKLIGHT (0~100) c. BRIGHTNESS (0~100) d. CONTRAST (0~100) e. COLOR (0~100) TINT (-32~32) g. SHARPNESS (0~100) h. COLOR TEMPERATURE (CUSTOM/COOL/NORMAL/WARM) ADVANCED VIDEO i-1. DNR(OFF/LOW/MEDIUM/STRONG) i-2. BLACK LEVEL EXTENDER (ON/OFF) i-3.
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C. SETUP: a. LANGUAGE (ENGLISH/FRENCH/SPANISH) b. SLEEP TIMER (OFF/30/60/90/120) RESET ALL SETTING CONFIDENTIAL DO NOT COPY Page 3-7 – File No. SG-0204...
Chapter5 Pin Assignment The TFT LCD analog display monitors use a 15 Pin Mini D-Sub connector as video input source. Description Green Blue Ground Ground R-Ground G-Ground B-Ground +5V for DDC Ground No Connection (SDA) H-Sync (Composite Sync) V-Sync (SCL) CONFIDENTIAL –...
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Four-Pin mini DIN S-Video Connector Pin Assignment b. Signal Level Video (Y): Analog 0.1Vp-p/75Ω Video (C): Analog 0.286p-p/75 Sync (H+V): 0.3V below Video (Y) c. Frequency H: 15.734KHz V: 60Hz (NTSC) Signal Level Video (Y) : Analog 0.1Vp-p/75Ω Video (C) : Analog 0.286p-p/75Ω Sync (H+V): 0.3V below Video (Y) Frequency H: 15.734Khz...
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HDMI Signal (HDMI): a. Pin Assignment Refer to HDNI Pin Assignment b. Type A c. Polarity Positive or Negative d. Frequency H: 15.734KHz V: 60Hz (NTSC-480i) H: 31KHz V: 60Hz (NTSC-480p) H: 45KHz V: 60Hz (NTSC-720p) H: 33KHz V: 60Hz (NTSC-1080i) Component signal Component a.
The operation of keypad There are 7 keys to control and select the function of VX32L and also has one LED to indicate the status of operation. They are “Power, ▼▲, + -, Input, OSD”.
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MT5372 Application MT5372 is a highly integrated video and audio single chip processor for emerging HDTV-Ready LCD TV. It includes one 3D/2D TV Decoder recovering the best image from CVBS, and in addition, its analog input also support popular S-Video, Component, VGA video source.
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CONFIDENTIAL DO NOT COPY Page 7-3 – File No. SG-0204...
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1. Video input a. Input Multiplexing 1.component X2 2.composite X2 3.s-videoX1 4.HDMI X1 5.VGA X1 6.RF&DTV X1 b. Input formats: 1.support HDTV 480i/480p/720p/1080p 2.support Y/C signal 1VP-P/75Ω 3.support Y/C signal 1VP-P/75Ω 4.support 480i/408p/720p/1080i/1080p 5.support VGA input up to 1366x168@60HZ 6.support RF NTSC system Frequency 55~801MHZ;DTV 480i/480p/720p/1080p 2.
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Digital port 1.1 digital port supporting DVI 24-bit RGB or CCIR-656/601 digital video input format 2.1 additional 8 bit digital port for ITU656 video format 1.Dual VBI decoders for the application of V-Chip/Closed-Caption/XDS/ Teletext/WSS/VPS 2.Supporting external VBI decoder by YPrPb input 3.VBI decoder up to 1000 pages Teletext.
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5. Microprocessor interface When power is supplied and power key is pressed then the rest circuit lets Reset to low state that will reset the MT5372 to initial state. After that the Reset will transits to high state and the MT5372 start to work that microprocessor executes the programs and configures the internal registers.
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4.Scaling 2nd generation high resolution arbitrary ratio vertical/horizontal scaling of video, from 1/32X to Advanced linear and non-linear Panorama scaling Programmable Zoom viewer Picture-in-Picture (PIP) Picture-Out-Picture (POP) 5.Display Advanced dithering processing for LCD display with 6/8/10 bit output 10bit gamma correction Supporting alpha blending for Video and two OSD planes Frame rate conversion 6.Seamless performance comparing demonstration function...
WM8776 Application The WM8776 is a high performance, stereo audio codec with five channel input selector. The WM8776 is ideal for surround sound processing applications for home hi-fi, DVD-RW and other audiovisual equipment. Etch ADC channel has programmable gain control with automatic level control.
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2. DIGITAL AUDIO INTERFACE 1. Slave mode The audio interfaces operations in either slave mode selectable using the MS control bit. In slave mode DIN is always an input to the WM8776 and DOUT is always an output. The default is Slave mode.
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The wm8776 has two possible device addresses, which can be selected using the CE pin In the VX32L LCD TV CE pin is High (device address is 36h) In the VX32L wm8776 has 2-wire interface 3. HDCP Decryption HDCP decryption contains all necessary logic to decrypt the incoming audio and video data.
TDA8946 Application In VX32L TV the TDA8946AJ is a dual-channel audio power amplifier with DC gain control. It has an output power of 2 1 0 W at an 8 l oad and a 12 V supply. ...
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2. Output power measurement The output power as a function of the supply voltage is measured on the output pins at THD = 10%,in the VX32L LCD TV Vcc=12V so we can see as shown in the following figure output about CONFIDENTIAL...
3. Mode selection In the VX32L LCD TV TDA8946AJ has two functional modes, which can be selected by applying the proper DC voltage to pin MODE. 1. Mute — In this mode the amplifier is DC-biased but not operational (no audio output).
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2 . Transport Demuxer : 1. Support 3 independent transport stream inputs 2. Support serial/parallel interface for each transport stream input 3. Support ATSC , DVB , and MPEG2 transport stream inputs. 4. Programmable sync detection. 5. Support DES/3-DES De-scramble. 6.
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8 . Main Display : 1. Mixing two video and three OSD and hardware cursor. 2. Contrast/Brightness adjustment. 3. Gamma correction. 4. Picture-in-Picture( PIP ). 5. Picture-Out-Picture( POP ). 6. 480i/576i/480p/576p/720p/1080i output 9 . Auxiliary Display : 1. Mixing one video and one OSD. 2.
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14 . Audio : 1. Support Dolby Digital AC-3 decoding. 2. MPEG-1 layer I/II , MP3 decoding. 3. Dolby prologic II. 4. Main audio output : 5.1ch + 2ch ( down mix ) 5. Auxiliary audio output : 2ch. 6. Pink noise and white noise generator. 7.
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MX29LV320BTTC (Flash) Application : The MX29LV320AT/B is a 32-mega bit Flash memory organized as 4M bytes of 8 bits and 2M words of 16 bits. MXIC's Flash memories offer the most cost-effective and reliable read/write non-volatile random access memory. The MX29LV320AT/B is packaged in 48-pin TSOP and 48-ball CSP. It is designed to be reprogrammed and erased in system or in standard EPROM programmers.
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BLOCK DIAGRAM CONFIDENTIAL DO NOT COPY Page 7-18 – File No. SG-0204...
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BUS OPERATION--1 Legend: L=Logic LOW=VIL, H=Logic High=VIH, VID=12.0 0.5V, V HH=11.5-12.5V, X=Don't Care, AIN=Address IN, DIN=Data IN,DOUT=Data OUT Notes: 1. When the WP/ACC pin is at VHH, the device enters the accelerated program mode. See "Accelerated Program Operations" for more information. 2.The sector group protect and chip unprotect functions may also be implemented via programming equipment.
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BUS OPERATION--2 Notes: 1.Code=00h means unprotected, or code=01h protected. 2.Code=99 means factory locked, or code=19h not factory locked. WRITE COMMANDS/COMMAND SEQUENCES To program data to the device or erase sectors of memory , the system must drive WE and CE to VIL, and OE to VIH.An erase operation can erase one sector, multiple sectors , or the entire device.
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TABLE A. MX29LV320AT/B COMMAND DEFINITIONS Legend: X=Don't care RA=Address of the memory location to be read. RD=Data read from location RA during read operation. PA=Address of the memory location to be programmed. Addresses are latched on the falling edge of the WE or CE pulse. PD=Data to be programmed at location PA.
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STANDBY MODE MX29LV320AT/B can be set into Standby mode with two different approaches. One is using both CE and RESET pins and the other one is using RESET pin only. When using both pins of CE and RESET, a CMOS Standby mode is achieved with both pins held at Vcc ±0.3V.
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If RESET is asserted during a program or erase operation, the RY/BY pin remains a "0" (busy) until the internal reset operation is complete, which requires a time of tREADY (during Embedded Algorithms). The system can thus monitor RY/BY to determine whether the reset operation is complete.
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WRITE OPERATION STATUS The device provides several bits to determine the status of a write operation: Q2, Q3, Q5, Q6, Q7, and RY/BY.Table B and the following subsections describe the functions of these bits. Q7, RY/BY, and Q6 each offer a method for determining whether a program or erase operation is complete or in progress.
Fig C. COMMAND WRITE OPERATION Fig D. READ TIMING WAVEFORMS CONFIDENTIAL DO NOT COPY Page 7-25 – File No. SG-0204...
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Fig E. RESET TIMING WAVEFORM CONFIDENTIAL DO NOT COPY Page 7-26 – File No. SG-0204...
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DDR SDRAM (NT5DS16M16CS-5T) Application: Functional Description The 256Mb DDR SDRAM is a high-speed CMOS, dynamic random-access memory containing 268, 435, 456 bits. The 256Mb DDR SDRAM is internally configured as a quad-bank DRAM. The 256Mb DDR SDRAM uses a double-data-rate architecture to achieve high-speed operation. The double-data-rate architecture is essentially a 2n prefetch architecture, with an interface designed to transfer two data words per clock cycle at the I/O pins.
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Pin Configuration - 400mil TSOP II (x4 / x8 / x16) CONFIDENTIAL DO NOT COPY Page 7-28 – File No. SG-0204...
Mode Register Operation Operating Mode The normal operating mode is selected by issuing a Mode Register Set Command with bits A7-A12 to zero, and bits A0-A6 set to the desired values. A DLL reset is initiated by issuing a Mode Register Set command with bits A7 and A9-A12 each set to zero, bit A8 set to one, and bits A0-A6 set to the desired values.
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Extended Mode Register The Extended Mode Register controls functions beyond those controlled by the Mode Register; these additional functions include DLL enable/disable, bit A0; output drive strength selection, bit A1; and QFC output enable/disable, bit A2 (NTC optional). These functions are controlled via the bit settings shown in the Extended Mode Register Definition.
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Truth Table a: Commands 1. CKE is high for all commands shown except Self Refresh. 2. BA0, BA1 select either the Base or the Extended Mode Register (BA0 = 0, BA1 = 0 selects Mode Register; BA0 = 1, BA1 = 0 selects ,Extended Mode Register; other combinations of BA0-BA1 are reserved;...
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Write The Write command is used to initiate a burst write access to an active (open) row. The value on the BA0, BA1 inputs selects the bank, and the address provided on inputs A0-Ai, Aj (where [i = 9, j = don’t care] for x8;...
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Operations: Reads Subsequent to programming the mode register with CAS latency, burst type, and burst length, Read bursts are initiated with a Read command. The starting column and bank addresses are provided with the Read command and Auto Precharge is either enabled or disabled for that burst access. If Auto Precharge is enabled, the row that is accessed starts precharge at the completion of the burst, provided tRAS has been satisfied.
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Random Read Accesses: CAS Latencies (Burst Length = 2, 4 or 8) CONFIDENTIAL DO NOT COPY Page 7-34 – File No. SG-0204...
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Read Command Writes Write bursts are initiated with a Write command, as shown in timing figure Write Command on following: The starting column and bank addresses are provided with the Write command, and Auto Precharge is either enabled or disabled for that access. If Auto Precharge is enabled, the row being accessed is precharged at the completion of the burst.
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The new Write command can be issued on any positive edge of clock following the previous Write command. The first data element from the new burst is applied after either the last element of a completed burst or the last desired data element of a longer burst which is being truncated. The new Write command should be issued x cycles after the first Write command, where x equals the number of desired data element pairs (pairs are required by the 2n prefetch architecture).
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Data Output (Read) CONFIDENTIAL DO NOT COPY Page 7-37 – File No. SG-0204...
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Chapter8 Waveforms PC MODE(1366X768 60HZ) CH1 H-sync (R209); CH2 H-sync (L52) CH1 V-sync (R213); CH2 V-sync (L53) CONFIDENTIAL DO NOT COPY Page 8-1 – File No. SG-0204...
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CH1 R (R203) CH1 R (C95) CH1 B (R199) CH1 B (C92) CONFIDENTIAL DO NOT COPY Page 8-2 – File No. SG-0204...
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CH1 G (R195) CH1 G (C89) CH1 VGAL (R207); CH2 VOL CONFIDENTIAL DO NOT COPY Page 8-3 – File No. SG-0204...
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CH1 VGAR (R208) ; CH2 VOL AV&TV MODE (AV1/AV2/TV) VIDEO CH1 TV CONFIDENTIAL DO NOT COPY Page 8-4 – File No. SG-0204...
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CH1 AV1 CH1 AV1L IN ; CH2 AV L (Speaker) CONFIDENTIAL DO NOT COPY Page 8-5 – File No. SG-0204...
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CH1 AV1 IN R ; CH2 AV_R (Speaker) CH1 AV2 CONFIDENTIAL DO NOT COPY Page 8-6 – File No. SG-0204...
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CH1 AV2L IN ; CH2 AV L (Speaker) CH1 AV2 IN R ; CH2 AV_R (Speaker) CONFIDENTIAL DO NOT COPY Page 8-7 – File No. SG-0204...
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COMPONENT MODE CH1 YPBPR1_Y CH1YPBPR1_L IN CH2 L (Speaker) CONFIDENTIAL DO NOT COPY Page 8-8 – File No. SG-0204...
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CH1 YPBPR1_R IN CH2 R (Speaker) CH1 YPBPR2_Y CONFIDENTIAL DO NOT COPY Page 8-9 – File No. SG-0204...
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CH1YPBPR2_L IN CH2 L (Speaker) CH1 YPBPR2_R IN CH2 R (Speaker) CONFIDENTIAL DO NOT COPY Page 8-10 – File No. SG-0204...
Chapter 9 Trouble shooting MONITOR DISPLAY NOTHING (PC MODE) Start Is Power board output +5VSB &DV12? LED is lighted Is J1 connector good? Is DC-DC OK? Is U1 (+5V) working ok? It is in power saving Check video cable Is the timing supported? LED is lighting? Check sync input Check VGASOG rout if analog...
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(TV, COMPOSITE VIDEO1,, S-VIDEO) IS NOT DISPLAY CORRECTLY Start 1.Check video Input signal good? 2.Check DVD player 1.Check P11(VIDEO&S) signal 2.Check signal between P1 and U14 (IF IN AV mode) U14 input correct? 3.Check Tuner &U13 (IF TV mode) 4.Check P1 (IF S-Video) 1.
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(COMPONENT) IS NOT DISPLAY CORRECTLY Start 1.Check video Input signal good? 2.Check host’s setting 1.Check signal between P1 2.Check power 12V& 5v P1 input correct? 1.Check signal between U14&P1 U14 input correct? 2.Check U14 Clock (27MHZ) 3. Check U14 DV33&DV12&AV15&AV12 1.Check U14 2.
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HDMI ) IS NOT DISPLAY CORRECTLY Start 1.Check video Input signal good? 2.Check host’s setting 1.Check p10&p11 connect U31 input correct? 2.Check signal between U31 and U19 1.Check U11 power U11 no data out ? 2.Check between signal U19 and U11 3.Check U19 clock 27MHZ 1.Is J6 connected good? 2.Is panel working ok?
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TROUBLE OF DC-DC CONVERTER Start The voltage is about + 5V 1.Check power board J7 PIN10,11,12 2.Check power cable connection J7 The voltage is about + 12V while power switch on J7 PIN 2,3,4 1.J7 connection good 2.Check J7 Pin1 is up to 3V? 3.Check power board The voltage is about +5V while power switch on...
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TROUBLE OF DDC READING Start Support DDC1/2B 1.Analog cable ok? 2.Check signal (U20 to P3) Analog DDC OK? 3.Check U20 Voltage 4.Is compliant protocol? Support DDC1/2B 1.Analog cable ok? 2.Check signal (U32 to P10) HDMIDDC OK? 3. Check signal (U34 to P11) 4.Is compliant protocol? CONFIDENTIAL DO NOT COPY...
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Chapter 10 Block Diagram System Block Diagram 32” WXGA panel Digital Video bus AC IN Power Board Speakers Main Board P6 P7 P8 P1 P9 □□□□□ Keypad/IR Board RJ11 Tuner Audio HDMIX2 RCA RGB earphone YPBPRX2RCAX2 SPDIF RCA OUT The TV system block diagram is powered by power board that transforms AC source of 100V~240V AC +/- 10% @ 50/60 HZ into DC 5V &...
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Main Board Block Diagram service Video Signal Audio Signal HDMI1 Communicate Signal PI3HDMI412FT Control Pin HDMI2 PI5C3257 HDMI1 HDMI2 EDID EDID EEPROM EEPROM AUDIO Audio TDA8946AJ Processor DSUB EDID AUDIO AMP. EEPROM WM8776 DSUB AUDIO CD4052 16M x 16 DDR 16M x 16 DDR 24C16 EEPROM...
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PE BAG 320*230*0.04T 1925-1100-0280 PE BAG (180W*290L*0.04t)(PE-LD)(ACC.-1) 1925-1200-7080 ACCESSARY BOX (330W*230D*50H) 1925-1300-7080 Brochure VIZIO Series 1925-1300-7980 Quick Setup Guide VIZIO VX32L HDTV 1925-1300-7990 MANUAL VIZIO VX32L HDTV 1925-1400-2710 Register CARD/VIZIO L15 1925-2000-0030 Polishing Cloth VIZIO P42 HDTV10A CONFIDENTIAL DO NOT COPY Page 12-7 –...
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3632-0062-0150 MAIN BD ASS'Y VX32L HDTV_LG (HDCP) ITEM LOCATION PART NO. DESCRPTION 363200620150A MAIN BD ASS'Y VX32L HDTV LG AI 363200620150M MAIN BD ASS'Y VX32L HDTV_LG MI 363200620150S MAIN BD ASS'Y VX32L HDTV_LG SMD CONFIDENTIAL DO NOT COPY Page 12-8 –...
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3642-0022-0189 IR BD ASS'Y GV42L HDTV ITEM LOCATION PART NO. DESCRPTION 364200220189M IR BD ASS'Y GV42L HDTV MI 364200220189S IR BD ASS'Y GV42L HDTV SMD CONFIDENTIAL DO NOT COPY Page 12-9 – File No. SG-0204...