Prima LC32M5S Service Manual Download | Manualshive

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Summary of Contents for LC32M5S

Page 1: ...LCD TELEVISION LC32M5S ...

Page 2: ... will result 2 5 If any foreign substance such as water liquid metal slices or other matters happens to fall into the module be sure to cut the power off immediately and do not move anything on the module lest it should cause fire or electric shock due to contact with the high voltage or short circuit 2 6 Should there be smoke abnormal smell or sound from the module please shut the power off at on...

Page 3: ... of picture residue on the screen as commonly called ghost shadow The extent of the residual picture varies with the maker of LCD screen This phenomenon doesn t represent failure This ghost shadow may remain in the picture for a period of time several minutes But when operating it please avoid displaying still picture in high brightness for a long time 3 Points for attention during installation 3 ...

Page 4: ...ng factory menu press power and VIDEO repeatedly to enter factory menu press S M to enter adjustment factory menu 3 1 EEPROM initialization Check DDC HDCPEEPROM PAL and FLASH To produce data processor board and analog board Check the data processor board and analog board All testing Connect with central signal source then check each function of TV such as analog control etc check the output of hea...

Page 5: ...r searching menu auto search connect RF TV terminal with central signal source and check if there are channels be skipped 4 2 AV S terminals Input AV S signal check if it is normal Receive of YUV signal format NO H frequency kHz V frequency Hz signal 1 15 734 59 94 SDTV 480i 2 31 469 59 94 HDTV 480p 4 44 955 59 94 HDTV 720p 6 33 716 59 94 HDTV 1080i 7 15 625 50 SDTV 576i 8 31 25 50 SDTV 576p 9 33 ...

Page 6: ...28H Sharpness Min 00H Sharpness Middle 10H Sharpness Max 1FH Color Min 00H Color Middle 32H Color Max 63H Hue Min CEH Hue Middle 00H Hue Max 32H Factory Audio Setting Items Ex factory set Volume Min 37H Volume 30 5FH Items Ex factory set EEPROM Erase Off Backlight Adjustable Off Back Light 00 Menu Timeout 15 Blank switch enable Off Show Logo On Auto Channel Label On Disable SRS active Stereo TT Ch...

Page 7: ...ems Ex factory set R Offset 00H G Offset 00H B Offset 00H R Gain FFH G Gain FFH B Gain FFH Brightness 50 Contrast 50 Picture analog set Vivid Standard Mild Custom Contrast 80 70 50 50 Brightness 50 45 40 50 Color 50 45 40 50 Hue 00 00 00 00 Sharpness 50 50 50 50 Sound balance set Live Pop Rock Custom 120Hz 50 50 65 50 500Hz 50 50 55 50 1 5KHz 50 60 55 50 5KHz 80 70 55 50 10KHz 85 70 55 50 4 3 user...

Page 8: ...tomobile train high voltage transmission line neon lamp etc Maybe there is interference between antenna and power supply line Please try to separate them in a longer distance Maybe the shielded layer of signal wire is not connected properly to the connector There appear streaks or light color on the screen Check if interfered by other equipment and if interfered possibly by the equipment like tran...

Page 9: ...e cable is disconnected Check if it s connected to the proper terminal or if the input mode is correct There appears an indication outside the receivable scope Check if the TV set can receive input signal The signal is not correctly identified and VGA format is beyond the specified scope Remote control cannot work properly Check if the batteries are installed in the reverse order Check if the batt...

Page 10: ...ect the IAP item press the enter button 3 connect the IICtools of computer with the upgrading interface of TV 4 running IAPWriter to enter into the upgrading state if there are failure between the computer and TV s IIC communication the indication that can t enter into the next step will appear you need to check the wiring at this moment 5 after selecting files menu and obtaining the software whic...

Page 11: ...10 LC 32M5S block diagram ...

Page 12: ...CL SDA control IC 27 28 To R L of sound amplifier 24 25 R L of Earphone 36 37 R L of AV OUT 33 34 R L of TV OUT 47 48 R L from main board 50 51 R L of SCART2 53 54 R L of SCART1 56 57 R L of AV IN 67 69 SIF input of main and sub channels 59 MONO input of sub channel ...

Page 13: ... IC of SCART VPC3230 Main pins function 13 14 SCL SDA control IC 4 5 6 RGB input of SCART1 74 AV signal of SCART1 and complex sync of RGB input 71 72 Y C of SCART2 input 73 AV signal of sub tuner input 75 AV input 70 VOUT signal of VPC3230 ...

Page 14: ...13 3 Receive of YPbPr YcbCr and RGB MST9883 Main pins function 56 57 SCL SDA control IC 43 48 54 RGB YUV input 30 31 H V sync of RGB input ...

Page 15: ...501 5 Main picture decoder and processing PanelTv Svp Main pins function K4 J1 SCL SDA adjustment IC L2 P4 Y C of S video L4 AV of main tuner input L3 AV input Y10 Y11 W11 analog RGB output U13 V13 Y2 H V sync and PCLK output ...

Page 16: ... 00 N502 W29C040 353 29040 00 N601 DS90C383 353 03830 70 N761 TFP501 353 05010 00 353 77200 10 AV processing board 667 L32M5S 40 TUNER201 JS 6B2 122A2 A2 590 40512 00 TUNER202 JS 6B2 121A2 590 40511 00 N201 MSP3410G 353 34100 80 N213 N214 MP7720 353 77200 10 N212 TLE2142CP 352 21420 00 IR board 667 L32M5S 09 Keypad board 667 L32M5S 05 Update board 667 L32M5S 29 Power supply board 667 L34K5 20 ...

Page 17: ...0mm 5mm Total defected point 8 7 5 4 Notes 1 Definition of defected point bright spot dark spot It is identified as a defected point if its area exceeds 1 2 of a single picture element R G B 2 Definition of bright spot It is identified as a bright spot if it is bright in the state of dark field and its bright size remains unchanged 3 Definition of dark spot It is identified as a dark spot if it is...

Page 18: ...17 Wiring diagram Data processing board Power board AV processing board Keypad board Update board IR board ...

Page 19: ...H SRAM peripherals Check if backlight plate 32nd pin of CPU back light control has any problem Video signals of various channels are normal Check if the input signal of this channel to IC pin is normal Or consider if IC and its peripherals and LVDS output are normal Audio signals of various channels are normal Check if the channel input signal to IC pin is normal Or consider if IC MPS7720 MSP3410 ...

Page 20: ...Is indicator yellow Disconnect power supply board with data processor and measure Standby5V Disconnect data processing board with infrared board CN902 and then see which board is out of order Powers supply board in trouble Check if I2 C bus line of the system is short circuited Check CPU N501 FLASH N502 GAL N553 reset the power supply of IC N552 Check the pin voltage of N902 D903 Check if the 50th...

Page 21: ... detected to be with sound but without picture As to inspection details of other channels please refer to inspection program 4 4 With picture but without sound no yes yes no Sound yes but picture no Is backlight lamp lit Try other channels see if all without pictures N101 and peripheral Transferred to 4 inspection Check back lamp board if back light control by 32nd pin of CPU is in trouble Picture...

Page 22: ...orks abnormally a No picture in AV yes no yes no Check if N201 has signal input Check on peripheral circuit of power amplifier and power supply Check N201 peripheral circuit of power amplifier and power supply Check all levels of circuit following the channel of audio signal input Check if C193 has signal input There is trouble in the channel form AV socket to N101 Check if line field sync signal ...

Page 23: ... normal Check peripheral circuit of N601 and power supply Check peripheral circuit of N101 crystal oscillation and power supply Check if C140 and C144 have signal input Check if 12th pin of TUNER201 on TV has signal output Check if line field sync signal and clock signal output from N101 are normal Check peripheral circuit of N601 and power supply Check peripheral circuit of N101 crystal oscillati...

Page 24: ...t of N401 crystal oscillation and power supply Check if 73rd pin of N401 has signal input Check the circuit from TUNER202 N401 Check peripheral circuit of N601 power supply N601 Check peripheral circuit of N101 crystal oscillation Check peripheral circuit of TUNER20 power supply and bus line Check if 4th 5th 6th and 74th of N401has signal input Trouble in channel from SCART1 socket to N401 Check i...

Page 25: ... N401 crystal oscillation and power supply Check periph eral circuit of N601 and power supply Check peripheral circuit of N101 crystal oscillation and power supply Check if 71st and 72nd pins of N401 have signal input There is problem with the channel from SCART2 socket to N401 Check if line field sync signal and clock signal output from N101 are normal Check peripheral circuit of N401 crystal osc...

Page 26: ...re normal Check if line field sync Signal and clock signal output from N101 are normal Check peripheral circuit of N201 power supply and bus line Check peripheral circuit of N601 and power supply Check peripheral circuit of N101 crystal oscillation and power supply Check if 4th 7th 9th pins of N703 have signal input Check if 3rd 6th 10th pins of N703 have signal input Check the channel from N703 o...

Page 27: ...al output from N101 are normal Check peripheral circuit power supply of N601 Check peripheral circuit of N101 crystal oscillation and power supply Check peripheral circuit power supply of N761and if the connection with DVI socket is good Check if 30th and 31st pins of N201have syn signal input There is problem with the channel from VGA socket to N703 Check if 1st and 5th pins of N701 have sync Sig...

Page 28: ...3 which may result in under coloring or color speckle 2 R602 R607 resistor array in trouble which may result in the loss of corresponding color in corresponding gray degree for the picture of all channels 3 R205 R210 resistor array in trouble which may result in the loss of corresponding color in corresponding gray degree for the picture of YPbPr VGA channel 4 R777 R782 resistor array in trouble w...

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