Vizio P50HDM Service Manual
Vizio P50HDM - 50" Plasma Panel Manual
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- Vizio P50HDM | Service Manual - Page 1
Service Manual Model #: VIZIO P50HDM V, Inc 320A Kalmus Drive Costa Mesa, CA 92626 TEL : +714-668-0588 FAX :+714-668-9099 -TOP Confidential - - Vizio P50HDM | Service Manual - Page 2
Theory of Circuit Operation 9. Waveforms 10. Trouble Shooting 11. Spare Parts List 12. Complete Parts List Appendix 1. Main Board Circuit Diagram 2. Main Board PCB Layout 3. Assembly Explosion Drawing Block Diagram PAGE 1-1 2-1 3-1 4-1 5-1 6-1 7-1 8-1 9-1 10-1 11-1 12-1 VIZIO P50HDM Service Manual - Vizio P50HDM | Service Manual - Page 3
, the user must use a grounded power supply cord and the provided shielded video interface cable with bonded ferrite cores. Also, any unauthorized changes or modifications to Amtrak products will void the user's authority to operate this device. Thus VINC Will not be held responsible for the - Vizio P50HDM | Service Manual - Page 4
Chapter 1 Features Wall-mountable New WIDE HD Plasma Panel:1366 x 768 (H x V) TruSurround XT sound system and DCDi by Faroujia video image High definition digital interface - HDMI HDCP supportive Multiple-screen display (picture-on-picture/picture-in-picture) Selectable picture mode 4-language On - Vizio P50HDM | Service Manual - Page 5
): 2. INPUT SOURCE RGB Signal： H: support to 30-80KHz V: support to 60-85Hz Pixel Clock: support to 108MHz HDMI Signal： H: 15.734KHz V: 60Hz (480i) H: 31KHz V: 60Hz (480p) H: 45KHz V: 60Hz (720p) H: 33KHz V: 60Hz (1080i) S-Video： Video (Y): Analog 0.1Vp-p/75Ω Video (C): Analog 0.286p-p/75 - Vizio P50HDM | Service Manual - Page 6
Pr/Cr RCA Jackx 3 Audio RCA Jack x 2 RCA Jack (CVBS) x 3 S-video 4 pin mini DIN x 1 RCA Jack (CVBS) x 3 S-video 4 pin mini DIN x 1 4. OUTPUT CONNECTORS a. Audio RCA Jack x 2 b. 3.5mm Mini-jack earphone x 1 5. POWER SUPPLY Consumption: 550W MAXPower OFF: less than 3W 6. SPEAKER Output 8Ω/10W (max - Vizio P50HDM | Service Manual - Page 7
: -20~60℃ b. Relative humidity: 10%~90% RH c. Altitude: 0~9,840 ft 8. DIMENSIONS a. Height: 871 mm b. Width: 1241mm c. Depth: 310 mm (with standard), 99 mm (without standard) 9. WEIGHT a. Net: 55.2 +/- 0.5 kgs b. Gross: 65.2 +/- 0.5 kgs CONFIDENTIAL - DO NOT COPY Page 2-3 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 8
3 On Screen Display Main unit button POWER MENU ▲ ▼ VOL-/W VOL+/X INPUT OSD Adjustment Mode Image Settings Picture Mode(User, Vivid, VIDEO Movie, Game, Sport) Brightness(0~100) Contrast(0~100) VIDEO Saturation(0~100) VIDEO Hue(-50~50) VIDEO Sharpness(0~24) Advanced VIDEO Noise Reduction - Vizio P50HDM | Service Manual - Page 9
PIP, Small PIP, POP Top-Left, Top-Right, Bottom-Left, Bottom-Right Audio Settings Bass(0~20) Treble(0~20) Balance(-10~10) SRS TS XT(Off, On) Auto Volume(On, Off) Speakers(On, Off) Audio Out*** Fixed Volume, Variable Volume Parental Controls VIDEO Password VIDEO VIDEO Settings TV Rating - Vizio P50HDM | Service Manual - Page 10
VIDEO VIDEO VIDEO VIDEO VIDEO VIDEO VIDEO VIDEO VIDEO VIDEO VIDEO VIDEO VIDEO VIDEO VIDEO CONFIDENTIAL - DO NOT COPY TV Youth (Unblocked, Blocked) TV Youth 7 (Unblocked, Blocked) TV G (Unblocked, Blocked) TV PG (Unblocked, Blocked) TV 14 (Unblocked, Blocked) TV MA (Unblocked, Blocked) Unblocked - Vizio P50HDM | Service Manual - Page 11
, TEXT4 Captions on mute (On, Off) Language English, Français, Español, Italiano Factory Reset (Yes, No) Image Cleaner Firmware Version * HDMI and Component 720P/1080i inputs do not support Panoramic. ** See below for detailed information regarding the PiP sources. CONFIDENTIAL - DO NOT - Vizio P50HDM | Service Manual - Page 12
for PIP and POP modes. (2)：For AV1 and AV2, S-Video has priority. If a signal is connected to AV1 S-Video by itself or signals are connected to AV1 S-Video and AV1 Video simultaneously, then S-Video will be the only choice for AV1. If a signal is connected to AV1 Video only, then Video will be the - Vizio P50HDM | Service Manual - Page 13
Chapter 4 Factory preset timings This timing chart is already preset for this plasma monitor. 1. PC analog preset modes Mode No. Resolution Refresh Rate (Hz) Horizontal Vertical Frequency Frequency (KHz) (Hz) Horizontal Sync Polarity (TTL) Vertical Sync Pixel Rate Remark - Vizio P50HDM | Service Manual - Page 14
4 Resolution 480i 480p 720p 1080i 3. HD digital preset modes at DVI Through HDMI interface by an optional interface cable 2.3.3.1 video input. 3. 1 Video input Mode No. 1 2 3 4 Resolution 480i 480p 720p 1080i 3.2 PC input Mode No. 1 Refresh Horizontal Resolution Rate Frequency (Hz) (KHz - Vizio P50HDM | Service Manual - Page 15
Chapter 5 Pin Assignment 1.Input There are analog and digital connectors as video input source in this model. 1.1 Analog 1.1.1 RGB Connector a. Type: b. Frequency: c. Signal level: d. Impedance: e. Synchronization f. Video bandwidth: g. Connector type: Analog H: 30-80KHz 0.7Vp-p V: 60-85Hz 75Ω - Vizio P50HDM | Service Manual - Page 16
: d. Connector type: H: 15.734KHz Y: 1Vp-p 75Ω 4-pin mini DIN V: 60Hz C: 0.286Vp-p (NTSC) 1.1.4 Y-Cb/Pb-Cr/Pr Component video signal a. Frequency: b. Signal level: c. Impedance: d. Connector type: H: 15.734KHz H: 31KHz H: 45KHz H: 33KHz Y: 1Vp-p 75Ω RCA jack V: 60Hz V: 60Hz V: 60Hz V: 60Hz - Vizio P50HDM | Service Manual - Page 17
1.1.6 Video audio in a. Signal level: 0.7Vrms b. Impedance: 47KΩ c. Frequency Response: 250Hz-20KHz d. Connector type: RCA L/R: 1.2 Digital - HDMI a. Frequency: b. Polarity: c. Type: d. Pin Assignment: H: 15.734KHz H: 31KHz H: 45KHz H: 33KHz Positive or Negative Type A Please see below V: - Vizio P50HDM | Service Manual - Page 18
Clock14 Reserved (N.C. on device) 16 SDA 18 +5V Power 2. Output 2.1 Earphone a. Signal level: b. Impedance: c. Output: d. Connector type: 2.2 Audio output a. Signal level: b. Impedance: c. Frequency Response: d. Connector type: 1Vrms (max.) 32Ω 50 mW Earphone mini jack 0.7Vrms 47KΩ 250Hz-20KHz RCA - Vizio P50HDM | Service Manual - Page 19
Chapter 6 Block Diagram System Block Diagram POWER BOARD Y DRIVER BOARD LVDS BOARD CN12 CN13 W1 CN5 CN3 CN1 CN2 J8 MAIN BOARD J7 X DRIVER BOARD IR BOARD EMI Fillter CONFIDENTIAL - DO NOT COPY Page 6-1 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 20
Main board System Block Diagram W8 CN17 U37 24LC02 EEPROM HDMI1 W13 U40 24LC02 EEPROM A4/B4/C4_CTZ A3/B3/C3_CTZ A2/B2/C2_CTZ Frame Store DDR Interface UART GPIO 2 Wire Controller 2 Wire Controller Digital A Input Digital B Input Analog input FL8532_CTZ Frame Store DDR Interface KEY PAD CN5 - Vizio P50HDM | Service Manual - Page 21
Chapter 7 Main Board Internal I/O Connections CN1 "DC POWER INPUT' PIN Description 1 PDP_+5Vsc 2 PDP_+5Vsc 3 PDP_+5Vsc 4 GND 5 GND 6 GND 7 PDP_+12V 8 PDP_+12V 9 GND 10 GND 11 PDP_+12V_FAN 12 PDP_FGND CN2 "DC POWER INPUT' PIN 1 2 3 4 Description PDP_Audio PDP_Audio GND - Vizio P50HDM | Service Manual - Page 22
CN5 CONNECTION "KEYPAD" PIN Description 1 LED2_KEYPAD 2 KEY_VCC 3 IR 4 ADC_IN2 5 NC 6 GND 7 +3.3V_LBADC 8 ADC_IN1 9 LED1_KEYPAD_BUF 10 GND P1 GND P2 GND CN6 CONNECTION "HDMI/ATSC_UP" PIN Description 1 +5V 2 51_TXD 3 51_RXD 4 GND CN7 CONNECTTION "ODC2BI" PIN 1 2 3 - Vizio P50HDM | Service Manual - Page 23
CN12 FAN CONNECTION PIN 1 2 3 4 Description NC FANIN1 +12V_FAN FGND CN13 FAN CONNECTION PIN 1 2 3 Description FANIN1 +12V_FAN FGND J7 CONNECTION "SPEAKER R" PIN 1 2 3 Description RLRL+ NC J8 CONNECTION "SPEAKER L" PIN 1 2 Description LLLL+ CONFIDENTIAL - DO NOT COPY Page 7-3 File No. SG- - Vizio P50HDM | Service Manual - Page 24
- 26 27 VS_ON 28 29 SDA_33V 30 31 GND Description TXA3+ TXAC+ GND TXA2TXA1TXA0GND +5V_SW GND NC NC TXB3+ GND SCL_33V NC J3 SELECT KEY POWER PIN Description 1-2 +3.3V_I/O 2-3 +5V "ON" ADD JUMPER , "OFF" NO JUMPER Default ON OFF CONFIDENTIAL - DO NOT COPY Page 7-4 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 25
J9 CONNECTION "PROGRAMUPDATA" PIN Description 1-2 ARXD 2-3 ARXD_HUD "ON" ADD JUMPER , "OFF" NO JUMPER Default ON OFF J10 CONNECTION "PROGRAMUPDATA" PIN Description 1-2 ATXD 2-3 ATXD_HUD "ON" ADD JUMPER , "OFF" NO JUMPER Default ON OFF CONFIDENTIAL - DO NOT COPY Page 7-5 File No. - Vizio P50HDM | Service Manual - Page 26
and also have two LED to indicate the status of operation. They are "Power, Source, MENU keys and LED. 1.The power key controls video processor FLI8532, FLI8532 will receive a low signal to turn on or off system while press the power key. 2.The other seven keys are on high state because the pull up - Vizio P50HDM | Service Manual - Page 27
to detect, process, and enhance any video or PC graphic format. The FLI8532 supports many worldwide VBI standards for applications of pair to an internal crystal oscillator and corresponding logic. A 19.6608 MHz TV crystal is recommended for best noise immunity with the 3D decoder. Alternatively, a - Vizio P50HDM | Service Manual - Page 28
Composite (CVBS), S-Video (SY, SC), YPrPb (Y, Pr, Pb) or RGB (R,G, B). Digital Input Port (DFE): The Digital Input Port is a 48bit data input with flexible configuration to support a wide range of digital sources. It consists of two 24bit ports (PORTA and PORTB), two sets of control signals (VS, HS - Vizio P50HDM | Service Manual - Page 29
ADC/PLL devices. These signals are not present on PORTB wide TTL output to the panel. The following digital video formats are supported by FLI8532 digital video graphic port: • ITU-BT-656 • 8-bit this flexible mapping is to ease the circuit board design when interfacing to other devices. This table - Vizio P50HDM | Service Manual - Page 30
to PDP panel spec: 30-bit LVDS Output Stream To Configure for 30-bit LVDS with this data mapping: LVDS_POWER (0x8726) = 0x3F LVDS_DIGITAL_CTRL (0x8728) = 0bUU00UU00, where U is user options. DISPLAY_CONTROL(0x862C)[11] = 1 For 30-bit LVDS, the following bus remappings are supported: Swap LVDS - Vizio P50HDM | Service Manual - Page 31
to 4Mbytes depending on the application. Both firmware and OSD content must be compiled into a using Genesis Workbench. Genesis Workbench is a GUI based tool for defining OSD menus, navigation, and busses, all driven by a common Master Serial Controller. These busses can be independently taken "off - Vizio P50HDM | Service Manual - Page 32
pulse during the acknowledge cycle. The addressed receiver is obliged to acknowledge each byte that has been received. The operation of Video Processor FLI8125 FLI8125 is another video processor designed by Genesis. In this product, we use FLI8125 to process most of PIP source input and then output - Vizio P50HDM | Service Manual - Page 33
Video Port VCLK 5.Second Video port clock. This is shared with ROM Address line 11. This is available only when parallel ROM interface is not used. Clock Synthesis Additional synthesized clocks using PLLs: 1.Main Timing EDDS. Used by the decoder. 7.A fixed frequency clock created by LDDS (LCLK). - Vizio P50HDM | Service Manual - Page 34
Front End The Analog Front End is responsible for selecting and capturing the desired analog input video stream. Overall application cost is reduced by providing analog switching capabilities for 16 separate analog signals. These signals are re-configurable as different combinations of composite - Vizio P50HDM | Service Manual - Page 35
consists of 3 channels that can support the following Fixed-position formats: Channels 1, 2 and 3 can be either R,G,B, or Y,U,V or 2 channels of Y and C or one channel of CVBS. The DFE performs Digital Clamp Loop Control for each channel, AGC Control, Color Conversion, Chroma Downscaling and 4fSC - Vizio P50HDM | Service Manual - Page 36
RGB input data, a selectable color space converter is used to transform RGB video input data from a DVI Rx to internal 16-bit 4:2:2 YUV. This provides control signals to simplify signal detection. CCIR656 data streams embedd all timing markers, for the 24-bit and 16-bit inputs the following signals - Vizio P50HDM | Service Manual - Page 37
system since video signals are normally over scanned. For a flat panel TV, in order to over scan the image, a smaller portion of the input image needs to be selected and then expanded to fill the entire screen. Input data streams originating from CCIR656 sources are cropped with reference to the - Vizio P50HDM | Service Manual - Page 38
that operate on the captured video data stream. Each block enters a low power mode to help reduce overall power consumption. Figure is used so that the number of taps can be increased based on the number of pixels per line and whether the pixels per line supported by the vertical scalar is 1366. - Vizio P50HDM | Service Manual - Page 39
LVDS transmitter is programmable to allow the data and control signals to be mapped into any sequence depending on the specified receiver format. DC balanced operation is supported as described in the Open LDI standard. Output timing is fully programmable via the host interface register set - Vizio P50HDM | Service Manual - Page 40
Figure 8-13 Display Windows and Timing Data captured by the Input Capture Window and processed by the various image manipulation blocks is output in the Display Active Window. This window is - Vizio P50HDM | Service Manual - Page 41
swapping Supports up to SXGA 75Hz output On-Chip Microcontroller (OCM) The on-chip microcontroller (OCM) is a 16-bit x86 100MHz processor capable of acting as either the overall system controller or a slave controller, receiving commands from an external controller. The OCM executes firmware running - Vizio P50HDM | Service Manual - Page 42
Figure 8-14 FLI8125 OCM Programming The operation of HDMI Sil9011 The SiI 9011 provides one HDMI input port. The SiI 9011 video output goes to a video processor while the audio output goes to an audio DAC. CONFIDENTIAL - DO NOT COPY Page 8-17 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 43
of the HDMI input or for automatically powering down the receiver. The +5V supply from the HDMI connector is used as a cable detect indicator. The SiI 9011 can monitor the presence of this +5V supply and, if and when necessary, provide a fast audio mute without pops when it senses the HDMI cable - Vizio P50HDM | Service Manual - Page 44
no required range specification in the HDMI AVI packet. Therefore the receiver's firmware will have to program the scaling depending on the detected video format. Refer to the SiI 9011 Programmer's Reference (SiI-PR-0006) for more details. When the receiver outputs embedded syncs (SAV/EAV codes), it - Vizio P50HDM | Service Manual - Page 45
Chapter 9 Waveforms 1. Ripple Voltage (1) PDP_+5Vsc (CN1.1) (2) PDP_+12V (CN1.7) CONFIDENTIAL - DO NOT COPY Page 9-1 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 46
(3) PDP_+5Vsb (CN3.4) (4) FLI8125 (U10) +3.3V_I/O_HUD CONFIDENTIAL - DO NOT COPY Page 9-2 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 47
+3.3V_ADC_HUD +1.8V_ADC_HUD CONFIDENTIAL - DO NOT COPY Page 9-3 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 48
(5) FLI8532 (U13) +3.3V_I/O +1.8V_ADC CONFIDENTIAL - DO NOT COPY Page 9-4 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 49
+2.5V_DDR +1.8V_CORE CONFIDENTIAL - DO NOT COPY Page 9-5 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 50
(6) NT5DS16M16CS-5T (U16, U17) (7) Am29LV320DT90-ED (XU1) CONFIDENTIAL - DO NOT COPY Page 9-6 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 51
(8) LM2660 (-5V_N of the U29) CONFIDENTIAL - DO NOT COPY Page 9-7 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 52
2. Clock Timing (1) NT5DS16M16CS-5T DDR clock (pin 45 of the U16 or U17) (2) FLI8125 Crystal clock (pin 15 of the U10) CONFIDENTIAL - DO NOT COPY Page 9-8 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 53
Hudson output clock (3) FLI8532 Crystal clock (pin B26 of the U13 or pin 1 of the C155) Cortze output clock CONFIDENTIAL - DO NOT COPY Page 9-9 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 54
(4) MSP4450G crystal clock (pin 55 of the U32) CONFIDENTIAL - DO NOT COPY Page 9-10 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 55
(5) SiI9011CLU crystal clock (pin 84 of the U35 and U42) (6) IC SM5964C40J crystal clock (pin 20 of the U38) CONFIDENTIAL - DO NOT COPY Page 9-11 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 56
3. Horizontal and Vertical sync. Timing (1) VGA input (1024x768x60Hz) H-sync CONFIDENTIAL - DO NOT COPY Page 9-12 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 57
V-sync CONFIDENTIAL - DO NOT COPY Page 9-13 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 58
(2) SiI9011CLU (U35 and U42) CLK BHS-sync CONFIDENTIAL - DO NOT COPY Page 9-14 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 59
BVS-sync CONFIDENTIAL - DO NOT COPY Page 9-15 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 60
CONFIDENTIAL - DO NOT COPY Page 9-16 File No. SG-0173 - Vizio P50HDM | Service Manual - Page 61
Chapter 10 PDP Trouble Shooting A. SYSTEM OVERVIEW Y driver board Main board Power supply board X driver board Display board IR board Audio power EMI filter Audio Voltage selectior CONFIDENTIAL - DO NOT COPY Page 10-1 File No. SG-0174 - Vizio P50HDM | Service Manual - Page 62
Y ELECTRODE DRIVING BOARD AUDIO POWER SUPPLY(+30V OR +24V) CONNECTING TO TRANSFER DISPLY SIGNAL TO PDP SET, AMPLIFIER THE AUDIO SIGNAL TO THE SPEAKER RECEIVE THE REMOTE CONTROLER AND DISPLAY SYSTEM STATUS LED KEYPAD FUNCTION FOR MANUAL OPERATE TV C. BOARD PICTURE MAIN BOARD CONFIDENTIAL - DO NOT - Vizio P50HDM | Service Manual - Page 63
DISPLAY BOARD IR BOARD CONFIDENTIAL - DO NOT COPY Page 10-3 File No. SG-0174 - Vizio P50HDM | Service Manual - Page 64
PDP DISPLAY NOTHING 1. Main board block diagram U26 MAX232A J9 2 1 3 J10 2 1 3 ATXD_HUD ARXD_HUD U40 24LC128 EEPROM(8051) ARXD ATXD_HUD ATXD ARXD_HUD UC_SCL/UC_SDA U38 SM5964-C40J U20 4052 4/1 x2 I/O HY5DU56822CT- - Vizio P50HDM | Service Manual - Page 65
Check U13 pin AD14. Is AD14 high? No U13 fail Yes No Power LED is lighting? Check internal cable? 1.CN1's cable 2.CN3's cable No Check main board CN3 pin 4Î studyby +5V Check CN3 pin 3Î RLY_ON(high) Check CN3 pin 2Î VS_ON(high) No Check Fuse open? (F2,F3,F4) Yse Check CN1Îpin 1,2,3 = +5V pin - Vizio P50HDM | Service Manual - Page 66
circuit Check R204,R201 Yes Use GProbe connect No from main to PC. Does scaler detect the signal? U13 fail PDP DISPLAY NOTHING(Analog HD1 on PIP mode without Y signal) BLOCK 1 No Is picture on screen? Check component 1 No (Y signal) =>C255 Is there sync? Trace componect 1 from Input To U10 - Vizio P50HDM | Service Manual - Page 67
To U10 circuit Check R205,R204 Yes Use GProbe connect No from main to PC. Does scaler detect the signal? U10 fail PDP DISPLAY NOTHING(Analog HD2 without Y signal) BLOCK 1 Is picture on screen? No Check component 2 (Y signal) ÎC258,R195 Is there sync? Yes Check U23 No outnputÎpin 31 - Vizio P50HDM | Service Manual - Page 68
No from main to PC. Does scaler detect the signal? U13 fail Yes Check before U23's circuit No 1.C256,C261(AC coupled) 2.R215 Input source fail 3.R218(75ohm) PDP DISPLAY NOTHING(Analog HD2 on PIP mode without Y signal) BLOCK 1 Is picture on screen? No Check component 2 (Y signal) ÎC287 - Vizio P50HDM | Service Manual - Page 69
5V) U24 fail Use GProbe connect No from main to PC. Does scaler detect the signal? U10 fail Yes Check before U24's circuit No 1.C276,C281(AC coupled) 2.R215 Input source fail 3.R218(75ohm) PDP DISPLAY NOTHING(RGB) BLOCK 1 No Is picture on screen? Check U45 H sync output Î U45 pin4,R181 - Vizio P50HDM | Service Manual - Page 70
PDP DISPLAY NOTHING(RGB on PIP mode without screen) BLOCK 1 No Is picture on screen? Check U45 H sync output Î U45 pin4,R181 No V sync output Î U45 pin8,R184 Is there signal? Yes Yes Check U45 H sync input Î U45 pin1,R185 V sync input Î U45 pin5,R187 Check U45 pin 14Î +3.3V Yes No Check - Vizio P50HDM | Service Manual - Page 71
NOTHING(Composite 1 on PIP without screen) BLOCK 1 No Is picture on screen? Check C308,R273,R274 Is there signal? Yes No No Check Q28's emitter. Is there signal? Check Q28's Base. No Is there signal? Check collector voltage(+5V). Use GProbe connect No from main to PC. Does scaler detect - Vizio P50HDM | Service Manual - Page 72
1 No No No Check Q29's Base. No Is picture on screen? Check C316,R286,R285 Is there signal? Check Q29's emitter. Is there signal? Is there signal? Check collector voltage(+5V). Yes Use GProbe connect No from main to PC. Does scaler detect the signal? Q13 fail Yes Q29 fail Check - Vizio P50HDM | Service Manual - Page 73
PDP DISPLAY NOTHING(S-VIDEO 1 without screen) BLOCK 1 No Is picture on screen? Check C320,R293,R292 Is there signal? Yes No No Check Q30's emitter. Is there signal? Check Q30's Base. No Is there signal? Check collector voltage(+5V). Use GProbe connect No from main to PC. Does scaler - Vizio P50HDM | Service Manual - Page 74
PDP DISPLAY NOTHING(S-VIDEO 1 on PIP mode without screen) BLOCK 1 No Is picture on screen? Check C318,R291,R292 Is there signal? Yes No No Check Q30's emitter. Is there signal? Check Q30's Base. No Is there signal? Check collector voltage(+5V). Use GProbe connect No from main to PC. Does - Vizio P50HDM | Service Manual - Page 75
PDP DISPLAY NOTHING(S-VIDEO 2 without screen) BLOCK 1 No Is picture on screen? Check C332,R316,R320 Is there signal? Yes No No Check Q33's emitter. Is there signal? Check Q33's Base. No Is there signal? Check collector voltage(+5V). Use GProbe connect No from main to PC. Does scaler - Vizio P50HDM | Service Manual - Page 76
PDP DISPLAY NOTHING(S-VIDEO 2 on PIP mode without screen) BLOCK 1 No Is picture on screen? Check C331,R313,R320 Is there signal? Yes No No Check Q33's emitter. Is there signal? Check Q33's Base. No Is there signal? Check collector voltage(+5V). Use GProbe connect No from main to PC. Does - Vizio P50HDM | Service Manual - Page 77
input source? Yes Check U37 I2C bus No SCLÎPin 6 SDAÎpin 5 Check U37 power 5VÎPin 8 No No Check D66 and D65 Are there 5V output? D66 fail or D65 fail Is picture on screen? No Check U35 pin 90 Î high No V syncÎR419 H syncÎR420 clockÎR421 Check +3.3V_SWÎ Yes FB19 - Vizio P50HDM | Service Manual - Page 78
Block 2 start HDMI's chip communicate with SM5964,is ok? No No Check U38's powerÎ Check U2's +5V_SW Pin 44,35 Îpin 7,8 Yes Check Y3Î 11.0592MHz Yes No Check U38's UART TxDÎpin 13 RxDÎpin 11 Check U20Î - Vizio P50HDM | Service Manual - Page 79
TROUBLE OF DDC READING Start No Analog DDC OK? Yes No Digital HDMI1 DDC OK? Yes Support DDC2B 1.Analog cable ok? 2.Voltage of +5V_BUF ok? 3.Check U21 4.Is compliant protocol? Support DDC2B 1.HDMI cable ok? 2.Voltage of VCC5_E2P_2ok? 3.Check U44 4.Is compliant protocol? No Digital HDMI2 DDC OK? - Vizio P50HDM | Service Manual - Page 80
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Service Manual
V, Inc
320A Kalmus Drive Costa Mesa, CA 92626
TEL : +714-668-0588
FAX :+714-668-9099
-TOP Confidential -
Model #: VIZIO P50HDM