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XOCECO PH-42FB31 Service Manual

Manual is about: Xoceco PDP Telvision Service manual

Summary of PH-42FB31

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    Pdp television ph-42/50fb31.

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    Contents safety precautions………………………………………………………………………..… criterion for identifying the defects on screen…………………………………………… alignment instructions …………………………….…….…………………………………. Method of software upgrading……………….…….………………………………………. Working principle analysis of the unit……………………………….………….…………. Block d...

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    1 safety precautions please read the “points for attention for the maintenance & repair of pdp” and “criterion for identifying the defects on screen” as below, before inspecting and adjusting the tv set. 1. “points for attention for the maintenance & repair of pdp” to avoid possible danger, damage o...

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    2 static electricity. During maintenance operation be sure to cover yourself with anti-static bag and before operation make sure to have it sufficiently grounded. 1.11 there are a big number of connection wires distributed around the screen. Please take care not to touch or scuff them during mainten...

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    3 effect. 1.21 there is piece of insulator stuck on the rear chassis corresponding to the power supply board. It is used to isolate the cool part from the hot part. Please take care to keep it intact lest it should become a potential safety trouble. 1.22 in addition to plasma screen, the glass is a ...

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    4 w w/4 w/2 w/4 zone b zone a h h/4 h/2 h/4 deemed as sub-standard. Figure 2 defective points table 2 criterion for three kinds of defective points item kind area a area b remark 1 dark spots no more than 4 no more than 10 2 bright spot no more than 1 no more than 3 3 flickering spots no more than 1...

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    5 alignment instructions 1. Test equipment pm5515 (video signal generator) vg-849 (yuv, vga, hdmi signal generator) ca100 (white balancer) 2. The alignment flow chart (see below figure) fig-1 adjustment flow-chart 3. Description of adjustment 3.1 unit adjustment connect the digital processing board,...

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    6 select adjustment page, then press “ok” to access. Press “▲” and “▼“ to move cursor up and down, when the cursor stays on a certain adjustment item, you can adjust it according the prompt. Press “menu” exit to the level one factory menu; press “menu” again to exit from the factory menu. The adjust...

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    7 4.3 ypbpr/ycbcr terminal input yuv signal (vg-849 signal generator), separate input yuv format signal of table 4 and check if the picture and sound are normal. Table 4 yuv signal format no h-frequency (khz) v-frequency (khz) signal 1 15.734 59.94 sdtv 480i 2 31.469 59.94 hdtv 480p 3 44.955 59.94 h...

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    8 color temperature: cool 4) audio menu, audio mode: speech(other items: custom, music, movie) balance: 50, spdif mode: auto, hp volume:50 5) rate menu, rating: no block, parent lock: off 6) system menu, state: nsw/act(other items: vic, qld, sa, wa, tas, nt) note: the default password of rate menu i...

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    9 3. Copy the update tools (idev.Exe) to the path you want to do it, and double click it. 4. Select “setup” menu..

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    10 5. Confirm the serial port is right. Base on the port which using for update. And set the band rate to 115200 (default). 6. Select the “image path” menu..

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    11 7. Confirm it’s the right file. 8. If it’s not right(maybe you didn’t select it before),click the “…”button to select “*.Ecc” file. Sometimes the image file you got it will be “*.Rar ”or “*.Zip” zip file, needs unzip it first. 9. You also can click the setup button to select and config, but pleas...

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    12 10. Then click the “down” button..

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    13 11. You can see the “waiting” window. 12. Then power (off then) on the tv set. 13. After download, it will be burning..

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    14 14. Last it will be finished 15. Press the (ir/ locate keypad) power key and holding for several second to force power off tv set, then power on again. It would be ok now. If it’s failure you can try once again..

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    15 working principle analysis of the unit feature: 1. Pdp panel size: 42” 50” pixel rate:1024x768 1366x768 interface: lvds(single 24bits) 2. Signal features tv: pal-bg / dvb-t rf frequency range:46.25~855.25mhz pc max. Resolution: up to 1280 x 1024 60hz pc max. Pixel rate:110mhz component:480i,480p,...

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    16 working principle 1. Pal-bg signal flow: antenna reception pal-bg signal send to the integrative tuner fqd1216, which contains hf and if amplifier circuit and video decoding circuit. It is controlled by main ic zr39660 (inside cpu) through i2c bus. The pal-bg signal via frequency tuning, hf ampli...

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    17 block diagram digital if analog sif pc 24-bit data av_out tda8759 tuner drx3975d zr39660 bga400 2x16mx16 ddram hs,vs,clk ypbpr2 ypbpr1 lvds w19b320abt panel flash hdmi ts cvbs_tv hef4052bt cvbs2 cvbs1 s_y s_c av1 audi o av2 audi o ypbpr1 audi o ypbpr2 audi o pc audi o d/a cs4345 tpa3001d1 njw1109...

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    18 ic block diagram 1. Zr39660 pin descriptions of zr39660: (1) serial transport input port t4: mpeg transport port input clock t3: mpeg transport input data u3: mpeg transport input frame y1: mpeg transport input valid (2) hdmi input d1,e3,f3,e2,f2,e1: hdmi differential data pairs d2,c1: hdmi diffe...

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    19 b2: hdmi serial data a1: hdmi hot plug detect d3: hdmi current set (3) ntsc/pal analog input port w2:video front end luminance in y3:video front end chroma in w3:video front end common mode reference (4) analog video output k18:composite data output (cvbs) j20:blue/pb pixel data output j18:green/...

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    20 n5:power on reset l4:infrared receive 2. Drx3975d the drx 3975d is a fourth-generation cofdm demodulator that offers today’s highest level of front-end integration resulting in ultimate dvb-t digital reception, compliant to ets 300 744, dtg d-book,eicta e-book, and nordig unified v1.0.2 . The ic ...

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    21 pin description of drx3975d: 2: reset_n 56, 57: oscillator 22: select i2c address 33: i2c data for host communication with the tuner 34: i2c clock to the tuner 15: i2c clock from host 16: i2c data from/to host 38, 39: differential input for if 17, 18, 21,25: serial transport output port 3. Adc co...

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    22 pin configuration of tda8759: pin description: 78,79,80: red analog input 63,64,65: green analog input 50,51,52: blue analog input 72,73,74: sync on green analog input 108,109,110: horizontal sync input 105,106,107: vertical sync input 29: hold pll frequency, do not track hsync 119: serial interf...

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    23 4. Audio processor sgtv5810 the sgtv58xy is a tv audio processor designed to serve as a low cost, integrated audio codec for hybrid (analog and digital) tvs, digital only tvs, and analog tvs. Other applications include set top boxes or other media applications where a low cost, high fidelity audi...

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    24 pin configuration of sgtv5810: pin description of sgtv5810: 69-72,57-60,51-54,43-50: analog audio input l/r 42,39: ear phone l/r 30-35: av audio out l/r 38,37: main audio output l/r 93,92: i2c sda/scl 95,94: serial interface address pin 96: reset_n 83,81:sif input 87,86: oscillator.

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    25 5. Tpa3001 the sound power amplifier tpa3001 class d amp is the high effective d type of power amplifier of the single track. The btl output power can reach 20w(10% thd+n) with 8-Ω speakers, +18v power supply, eliminating the need for heat sinks. The tpa3001d1 is available in the 24-pin thermally...

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    26 wiring diagram 5 6 5 5 9 5 2 3 1 6 1 2 1 1 4 6 4 ` x a 5 0 x8 0 2 x6 0 2 r s -232 h d m i v g a y p b p r1 y p b p r2 l a 0 3 x 6 0 3 x 6 0 8 x 5 0 1 xc01 xb01 xc02 x232 x103 x102 a v o u t e a rp h o n e s - v id e o a v 1 i n a v 2 i n x1 0 5 x1 0 4 r f x 6 0 6 x6 0 1 x1 0 6 x231 x101 x226 xb03...

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    27 trouble shooting before servicing please check to find the possible causes of the troubles according to the table below. 1.Antenna(signal): picture is out of focus or jumping 6. Bad status in signal receiving 7. Poor signal 8. Check if there are failures with the electrical connector or the anten...

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    28 symptoms possible cause the signal types. Picture too bright and there is distortion in the brightest area z check if the contrast setting is too high. Z possibly the output quality of dvd broadcaster is set too high. Z it maybe also due to improper terminal connection of the video frequency sign...

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    29 troubleshooting guide (1) abnormal picture a) a certain differential wire pair of lvds of xa50 (rx0+/-, rx1+/-, rx2+/-, rx3+/-)is abnormal, which may lead to lack of color or color splash. B) failure with resistor rows ra18~ra25, which may lead to loss of corresponding color from the gray degree ...

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    30 (2) no picture, no sound (3) with picture but no sound check the output voltage of sockets x603/x606/x608 no picture, no sound check the color of indicator light red blue check the power board no sound no picture power board problem refer to (3) checking procedure refer to (4) checking procedure ...

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    31 (4) with sound but no picture with sound but no picture display osd menu? Display logo? If pin5 of x602 (irr) has signal? Yes no yes no if there is no picture in all channels? Check if the crystal in data processing board starts, ddr clock and ddr sdram are normal? Yes no check n108 and its perip...

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    32 (5) av no picture (6) s-terminal no picture check if c155 and c156 input signals? Yes no yes no check if pin13 of n103 outputs signals? Check n104/n107 and the circuit from av terminal to n103 check the periphery circuit from xc02 to n801 check n103 and its periphery circuit check if c123 and c15...

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    33 (7) tv channel no picture (8) dvb-t channel no picture note : the i2c bus line control of tuner is switch through the bus line of n242, so after checking the power supply and peripheral circuit of tuner241, it is still no picture in tv and dvb-t channel, please check n242 emphatically. Check if p...

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    34 (9) yprpb or ycrcb channel no picture (10) d-sub channel no picture check if pin63/64/72/73 of na05 output signals? Yes no check if resistor rows rs72~ra74, ra77~ra79 are well jointing check the path from nb01, nb02, na50 to ypbpr yes check na50 and its periphery check if pin52/65/80 of na50 and ...

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    35 (11) hdmi channel no picture note: n801 embeds flash, which stores hdcp information of hdmi, while edid data stored in external eeprom(na02), so make sure the connection between hdmi socket/interface and the data of na02 is well flash write, the picture and sound will display normally. Check dete...

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    36 block diagram of 42” power board a c in e m i r e c tif y s t r – e 1 5 6 5 p f c is o la tio n 1 8 v a p 1 5 0 1 a p 1 5 0 1 a p 1 5 0 1 a p 1 5 0 1 a f lit e r 3 v 3 s c 5 v s c 5 v c t r l 1 2 v s c 1 8 v s c 5 v s b v a v s s t r a 6 1 5 9 m – is o la tio n s t r f 6 4 6 8 – is o la tio n s t...

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    37 troubleshooting of 42” power board instruction of system and time sequence control the whole system is composed of emi, rectify, pfc, dc/dc and mcu. Therein mcu is the control core of the whole system. On the one hand, it controls on/off time sequence of each voltage and the main ac voltage test....

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    Appendix-a: main assembly model part name no. Ph-42fb31 digital processing board 667.Phifb31-69 key board 667.Phifc31-05 ir receiver board 667.Phifc31-09 power board 667.Ph42fb6-20 power filter board 667.Ph42t8-51 analog board 667.Ps42fb6-53 remote control 301.D42fb6-06 panel 335.42014-00 ph-50fb31 ...

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    603-ph42fb31-12 ver.1.0