NEC AccuSync LCD71VM Service Manual Download Page 87

Page: 87 / 129

5-24

No.

Item

Abbreviation

VESA 1024x768 70Hz

VESA 1024x768 75Hz

Pixel frequency

75.000MHz

78.75MHz

Horizontal frequency

56.48kHz 60.02kHz

Line

Time

total

17.71us 1328CLK 16.66us 1312CLK

Horizontal

active

display Thd 13.65us 1024CLK 13.00us 1024CLK

Horizontal sync pulse

Thp 1.81us 136CLK 1.22us 96CLK

Horizontal

back

porch Thb 1.92us 144CLK 2.24us 176CLK

Horizontal front porch

Thf 0.32us 24CLK 0.20us 16CLK

Horizontal sync polarity

NEG

POS

Vertical

Frequency

70.07Hz 75.03Hz

Frame time total

14.27ms

806H

13.33ms

800H

Vertical active display

Tvd

13.60ms

768H

12.80ms

768H

Vertical sync pulse

Tvp

0.11ms

0.05ms

Vertical

back

porch

Tvb 0.51ms 29H 0.47ms 28H

Vertical front porch

Tvf 0.05ms 3H 0.02ms 1H

Vertical sync polarity

NEG

POS

No.

Item Abbreviation

MAC

1152x870 75Hz

VESA 1280x960 60Hz

Pixel

frequency

100.00MHz 108.00MHz

Horizontal frequency

68.82kHz 60.00kHz

Line

Time

total

14.56us 1456CLK 16.67us 1800CLK

Horizontal active display

Thd

11.52us

1152CLK

11.85us

1280CLK

Horizontal sync pulse

Thp

1.28us 128CK 1.04us 112CLK

Horizontal

back

porch Thb 1.44us 144CLK 2.89us 312CLK

Horizontal front porch

Thf 0.32us 32CLk 0.89us 96CLK

Horizontal sync polarity

NEG

POS

Vertical

Frequency

75.06Hz 60.00Hz

Frame time total

13.32ms

915H

16.67ms

1000H

Vertical active display

Tvd

12.67ms

870H

16.0ms

960H

Vertical sync pulse

Tvp

0.04ms

0.05ms

Vertical

back

porch

Tvb 0.57ms 39H 0.60ms 36H

Vertical front porch

Tvf 0.04ms 3H 0.017ms 1H

Vertical sync polarity

NEG

POS

No.

Item

Abbreviation

VESA 1280x960 75Hz

VESA 1280x1024 60Hz

Pixel

frequency

129.60MHz 108.00MHz

Horizontal

frequency fh

75.000kHz 63.981kHz

Line Time total

13.333us

1728CLK

15.63us

1688CLK

Horizontal active display

Thd

9.877us

1280CLK

11.85us

1280CLK

Horizontal sync pulse

Thp

0.988us

128CLK

1.04us

112CLK

Horizontal back porch

Thb

1.975us

256CLK

2.30us

248CLK

Horizontal front porch

Thf 0.494us 64CLK 0.44us 48CLK

Horizontal sync polarity

POS

Vertical

Frequency

75.000Hz 60.02Hz

Frame time total

13.333ms

1000H

16.67ms

1066H

Vertical active display

Tvd

12.800ms

960H

16.00ms

1024H

Vertical sync pulse

Tvp

0.040ms

0.05ms

Vertical

back

porch

Tvb 0.480ms 36H 0.59ms 38H

Vertical front porch

Tvf 0.013ms 1H 0.02ms 1H

Vertical sync polarity

POS

Summary of Contents for AccuSync LCD71VM

Page 1: ...OLOR MONITOR AccuSyncTM LCD71VM MODEL ID LCD71VM A BK A BK B 200309 08R610AY 08R620AY 08R620BY SERVICE MANUAL PART NO 599910667 1st Edition NEC MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION JULY 2003...

Page 2: ...he personnel that un insulated voltage within the unit may have sufficient magnitude to cause electric shock This symbol alerts the personnel that important literature concerning the operation and mai...

Page 3: ...1 1 SERIAL NUMBER INFORMATION 2 1 DISASSEMBLY 3 1 ADJUSTMENT PROCEDURES 4 1 INSPECTION 5 1 TROUBLE SHOOTING 6 1 CIRCUIT DESCRIPTION 7 1 REPLACEMENT PARTS LIST 8 1 BLOCK DIAGRAM 9 1 SCHEMATIC DIAGRAMS...

Page 4: ...1 1 User s Manual 1 A Version AccuSync TM LCD51VM LCD71VM...

Page 5: ...pecifications 12 Features 14 Troubleshooting 15 References 16 Limited Warranty 17 TCO 99 18 Avertissement 21 Contenu 22 Mise en marche rapide 23 Commandes 27 Usage recommand 30 Sp cifications 32 Fonct...

Page 6: ...its are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed a...

Page 7: ...rial to transport or ship the monitor Your new NEC AccuSync LCD monitor box should contain the following AccuSync LCD monitor with tilt base Audio Cable Power Cord Video Signal Cable User s Manual Bas...

Page 8: ...ut terminal of the computer Headphones may be connected to the Headphones output on the back of the monitor While the headphones are connected the sound from the speakers will y p p be disabled Headph...

Page 9: ...t continued Note Some Macintosh systems do not require a MacintoshCable Adapter y q q Figure A 1 Figure C 1 Figure A 2 Macintosh Cable Adapter not include p p Figure B 1 Sub holder Headphone Audio inp...

Page 10: ...stand and lift off the stand Figure R 1 4 Remove the 4 screws connecting the monitor to the stand and remove the metal plate Figure R 2 The monitor is now ready for mounting in an alternate manner 5...

Page 11: ...e the attached screws 4pcs as shown in the picture when installing To meet the safety requirements the monitor must be mounted to an arm which guaranties the necessary stability under consideration of...

Page 12: ...right OSM On Adjustment stage Moves to Icon selection stage Adjust value decrease or j Cursor for adjust moves left Adjust value increase or j Cursor for adjust moves right Reset operation Mute off on...

Page 13: ...by increasing or decreasing this setting FINE Improves focus clarity and image stability by increasing or decreasing this setting p COLOR CONTROL SYSTEMS Four color presets 9300 7500 6500 USER select...

Page 14: ...pear g EXIT Selecting EXIT allows you exit OSM menu sub menu LANGUAGE OSM control menus are available in seven languages OSM TURN OFF The OSM control menu will stay on as long as it is in use In the O...

Page 15: ...or from the wall outlet and refer servicing to qualified service personnel under the following conditions When the power supply cord or plug is damaged If liquid has been spilled or objects have falle...

Page 16: ...Avoid using any cleaning solution or glass cleaner Adjust the monitor s brightness and contrast controls to enhance readability Use a document holder placed close to the screen Position whatever you...

Page 17: ...1024 x 768 at 60 Hz to 75 Hz NEC Mitsubishi Electronics Display cites recommended resolution at 75 Hz for optimal display performance Active Display Area Horizontal 304 1 mm 12 0 inches Vertical 228...

Page 18: ...0 Hz to 75 Hz 1152 x 870 1 at 75 Hz NEC Mitsubishi Electronics Display cites 1280 x 960 1 at 60 Hz to 75 Hz recommended resolution at 60 Hz for 1280 x 1024 at 60 Hz to 75 Hz optimal display performanc...

Page 19: ...emissions Plug and Play The Microsoft t t solution with the Windows 95 98 Me 2000 XP operat ing system facilitates setup and installation by allowing the monitor to send its capabilities such as scree...

Page 20: ...th all personal display devices NEC Mitsubishi Electronics Display recommends using a moving screen saver at regular intervals whenever the screen is idle or turning off the monitor when not in use Im...

Page 21: ...p www necmitsubishi com css techform htm Sales and Product Information Sales Information Line 888 NEC MITS 888 632 6487 Canadian Customers 866 771 0266 Ext 4037 Government Sales 800 284 6320 Governmen...

Page 22: ...eturned to NMD A for service MUST have prior approval which may be obtained by calling 1 800 632 4662 The Product shall not have been previously altered repaired or serviced by anyone other than a ser...

Page 23: ...lling scheme was developed as a joint effort by the TCO The Swedish Confederation of Professional Employees Svenska Naturskyddsforeningen TheSwedishSocietyforNatureConservation andStatensEnergimyndigh...

Page 24: ...s sometimes found in batteries relays and switches Mercury damages the nervous system and is toxic in high doses TCO 99 requirement states that batteries may not contain any Mercury It also demands th...

Page 25: ...D51VM L152R5 and AccuSync LCD71VM L172R6 are in compliance with Council Directive 73 23 EEC EN 60950 Council Directive 89 336 EEC EN 55022 EN 61000 3 2 EN 61000 3 3 EN 55024 and marked with NEC Mitsub...

Page 26: ...ithout notice Reproduction of this document or portions thereof without prior approval of NEC Mitsubishi Electronics Display of America is prohibited DECLARATION OF CONFORMITY This device complies wit...

Page 27: ...1 24 2 B Version AccuSync LCD51VM AccuSync LCD71VM User s Manual...

Page 28: ...is a registred trademark of NEC Mitsubishi Electric Visual Systems Corporation in Austria Benelux Denmark France Germany Italy Norway Spain Sweden U K IBM PC XT AT PS 2 MCGA VGA 8514 A and XGA are reg...

Page 29: ...radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception whic...

Page 30: ...S 1 Figure A 1 To attach the AccuSync LCD monitor to your system follow these instructions 1 Turn off the power to your computer 2 For the PC with Analog output Connect the 15 pin mini D SUB signal ca...

Page 31: ...The monitor is now ready for mounting in an alternate manner 5 Connect the AC cord and signal cable to the back of the monitor Figure R 3 6 Reverse this process to reattach stand NOTE Use only VESA c...

Page 32: ...with a flexible arm Please use the attached screws 4pcs as show in the picture when installing To meet the safety requirements the monitor must be mounted to an arm which guaranties the necessary stab...

Page 33: ...just operate At OSD showing Icon selection stage Go to Adjustment stage Cursor goes to left Cursor goes to right At OSD showing Adjustment stage Go to Icon selection stage Adjust value decrease or Cur...

Page 34: ...select the desired color setting COLOUR RED Increase or decreases Red The change will appear on screen COLOUR GREEN Increase or decreases Green The change will appear on screen COLOUR BLUE Increase o...

Page 35: ...l and serial numbers of your monitor OSM Warning OSM Warning menus disappear with Exit button NO SIGNAL This function gives a warning when there is no signal present After power is turned on or when t...

Page 36: ...ately unplug your monitor from the wall outlet and refer servicing to qualified service personnel under the following conditions When the power supply cord or plug is damaged If liquid has been spille...

Page 37: ...hard for you to see your screen use an antiglare filter Clean the LCD monitor surface with a lint free non abrasive cloth Avoid using any cleaning solution or glass cleaner Adjust the monitor s brigh...

Page 38: ...z NEC Mitsubishi Electronics Display cites 832 x 624 1 75 Hz recommended resolution at 75 Hz for 1024 x 768 60 Hz to 75 Hz optimal display performance Active Display Area Horizontal 304 1 mm Vertical...

Page 39: ...x 864 1 70 Hz to 75 Hz 1152 x 870 1 75 Hz NEC Mitsubishi Electronics Display cites 1280 x 960 1 60 Hz to 75 Hz recommended resolution at 75 Hz for 1280 x 1024 60 Hz to 75 Hz optimal display performan...

Page 40: ...ompliance with MPRII and TCO guidelines for lower emissions Plug and Play The Microsoft solution with the Windows 95 98 Me 2000 XP operating system facilitates setup and installation by allowing the m...

Page 41: ...e image NOTE As with all personal display devices NEC Mitsubishi Electronics Displays recommends using a screen saver at regular intervals whenever the screen is idle or turning off the monitor when n...

Page 42: ...strict environmental demands for example in respect of the reduction of electric and magnetic fields physical and visual ergonomics and good usability Environmental Requirements Flame retardants Flam...

Page 43: ...ember Y December Z Classification code Discriminate by cabinet color White 0 Black 1 Running number Note This running number doesn t reset at each month Example Jan 00001 00002 00003 01234 Feb 01235 0...

Page 44: ...the proper screwdriver If oversize or undersize screwdriver is used screws may be damaged g Assembly is the opposite process of disassembly SYMBOL Part No for NPG DESCRIPTION CABINET COLOR 1 14300511...

Page 45: ...CABINET COLOR 3 14000411 SC CBISSx3x8x3G White 3 14000401 SC CBISSx3x8x3K Black 4 14000421 SC CBIBSx3x16x3G White 4 14000261 SCREW 3 16 TRUSS HEAD B TITE Black 5 10103681 BACK L172R6 WH NSP White 5 1...

Page 46: ...SCRIPTION CABINET COLOR Ver 9 10103811 BEZEL L172R6 WH NSP ASSY White A ver 9 10103831 BEZEL L172R6 BK NSP ASSY Black A ver 9 10103851 BEZEL L172R6 BK B NSP AS Silver Black B ver 10 11301621 KNOB CONT...

Page 47: ...1 SC CFIMS 3 4 3K 12 14300201 4 40TX4 8HLX4X5 NI W SYMBOL Part No for NPG DESCRIPTION 13 14000121 SCREW CUP 3 8 15BF 14 12301161 SHIELD EMI L172R6 15 12000961 CHASSIS BASE L172R6 16 14300521 SC CFIMS...

Page 48: ...17 RC200302 WIRE 30P 30P L150 LVDS LG 18 JG572011 TFT LM170E01 LPL SYMBOL Part No for NPG DESCRIPTION 19 14000121 SCREW CUP 3 8 15BF 20 14300031 SCREW PL CPIMS 4 10 15BF 21 RC200272 WIRE 9P 9P P 2 0...

Page 49: ...No for NPG DESCRIPTION CABINET COLOR 24 11001941 STAND COVER T L172R6 WH White 24 11001951 STAND COVER T L172R6 BK Black 25 12301281 SHIELD TCO L172R6 26 14000491 SC CBIPS 4 8 15B 27 11001971 STAND CO...

Page 50: ...4 3 3 3 Hot Key for Burn in Mode 4 4 4 Adjustment 4 5 4 1 Measuring Instruments Jigs and Tools 4 5 4 2 Power supply Voltage 4 5 4 3 Power Circuit Closure 4 5 4 4 ADC Bias and Gain Adjust 4 5 4 5 Panel...

Page 51: ...TTING WWW NECMITSUBISHI COM OSM SETTING LANGUAGE ENGLISH 3 Basic Operation 3 1 Basic Key Function Button OSM Off OSM displayed Shortcut to bright adjust window Shortcut to volume adjust window Auto ad...

Page 52: ...OSM menu b OSM select to TOOL menu by Plus or Minus button c Press Select button into TOOL menu d OSM select to MODE item and Press Select button into MODE menu e Press Plus Minus and Auto Reset butto...

Page 53: ...4 4 3 3 Hot Key for Burn in Mode a No signal input b Press Plus Minus and Auto Reset button then into Burn in mode and Auto Reset...

Page 54: ...cuit Closure 1 Connect the suitable cable of the VG 819 according to the setting mode 2 Turn on the Power switch of the VG 819 3 Connect the AC power cable to the unit being adjusted 4 Turn on the Pow...

Page 55: ...of 1280 1024 75Hz in Full white pattern 2 Proceed Factory Preset function Brightness 100 Contrast 100 3 Color temperature setting to USER R 100 G 100 B 100 4 Check the center color coordination x 313...

Page 56: ...8us 1280CLK Horizontal sync pulse Thp 1 07us 144CLK Horizontal back porch Thb 1 84us 248CLK Horizontal front porch Thf 0 12us 16CLK Horizontal sync polarity POS Vertical Frequency fv 75 03Hz Frame tim...

Page 57: ...offset GAIN R G B It is possible to adjust the gain values of R G B respectively This value use Auto contrast of user menu OFFSET R G B It is possible to adjust the offset values of R G B respectively...

Page 58: ...49 PWMO MAX Brightness control Max Initial 49 PWMO MIN Brightness control Min Initial 21 F GAIN R G B It is factory auto gain result value If proceed factory preset of user menu then overwrite gain s...

Page 59: ...STABLE COUNT Input signal unstable condition from stable Initial 1 ON Total accumulated time during the reception of input signals LED green OFF Accumulated time in the power saving mode and soft powe...

Page 60: ...c pulse Thp 1 27us 40CLK 2 03us 64CLK Horizontal back porch Thb 4 06us 128CLK 3 81us 120CLK Horizontal front porch Thf 0 76us 24CLK 0 51us 16CLK Horizontal sync polarity NEG NEG Vertical Frequency fv...

Page 61: ...hp 2 40us 120CLK 1 62us 80CLK Horizontal back porch Thb 1 28us 64CLK 3 23us 160CLK Horizontal front porch Thf 1 12us 56CLK 0 32us 16CLK Horizontal sync polarity POS NEG POS Vertical Frequency fv 72 19...

Page 62: ...1 28us 128CK 1 04us 112CLK Horizontal back porch Thb 1 44us 144CLK 2 89us 312CLK Horizontal front porch Thf 0 32us 32CLk 0 89us 96CLK Horizontal sync polarity NEG POS Vertical Frequency fv 75 06Hz 60...

Page 63: ...0CLK Horizontal sync pulse Thp 1 07us 144CLK Horizontal back porch Thb 1 84us 248CLK Horizontal front porch Thf 0 12us 16CLK Horizontal sync polarity POS Vertical Frequency fv 75 03Hz Frame time total...

Page 64: ...eck Power Manage Function 5 11 3 5 Inspection on Audio function 5 12 4 Safety Test 5 13 4 1 Input Current Measurements 5 13 4 2 Power Source Earth Connections 5 13 4 3 Dielectric Strength Test 5 14 4...

Page 65: ...t memory 1 user color On Screen Display Yes Power Management Yes VESA DPMS Plug and Play Yes VESA DDC2B 2Bi USB Hub No Speaker Yes Headphone Jack Yes Microphone Jack No Auto Adjustment Yes Position Si...

Page 66: ...ick PCBC Ergonomics Energy Star TCO99 Others Windows XP Logo DDC CI Accessories User s manual D SUB to D SUB signal cable x 1 1 8m Power cord x 1 1 8m Audio cable x 1 1 8m Set up Sheet NaviSet flyer L...

Page 67: ...t 4 CCFLs two lamps at one side Luminance 250 cd m2 typical center all white Contrast ratio 450 1 typical Display color 16 19 million colors 6bit FRC Viewing angle 70 70 L R 60 60 U D CR 10 Typical 80...

Page 68: ...xpansion 800x600 1 6 1 71 1280x1024 Expansion 832x624 1 54 1 64 1280x1024 Expansion 1024x768 1 25 1 33 1280x1024 Expansion 1152x864 1 11 1 19 1280x1024 Expansion 1152x870 1 11 1 18 1280x1024 Expansion...

Page 69: ...eard from the point of 30cm distance from the monitor Remaining behind buzz 5mVp p max Any noise shall not be heard from the point of 30cm distance from the monitor S N ratio 40dB condition all black...

Page 70: ...djacent 3 dots separately bright dots and dark dots Not Allowed Note 3 Dot Defect 5 Dot defects except 1 and 2 R or G or B Bright Dot Dark Dot Bright Dark 6 Max 7 Dark Bright Note 4 6 Distance between...

Page 71: ...dots R G G B R G G B R G G B R G R G R G R G R G R G etc Bright Dot Dark Dot Note 1 Horizontally adjacent 2 dots R G G B Note 2 1 2 Max 3 Combination with Bright Dark Dot Combination except horizonta...

Page 72: ...R G G B B R R G G B B R G G B B R Distance between the same color Combination with Bright Dot Dark Dot 6 5mm 6 5mm 6 5mm 6 5mm 6 5mm 6 5mm 6 5mm 6 5mm 6 5mm Count as defect Do not count as defect R R...

Page 73: ...the Black Matrix outside of Active Area are not considered as a defect 2 5 4 Foreign Material Items Criteria Linear 0 03 W 0 10 0 3 L 2 5 N 4 Foreign Material Circular 0 25 D 1 0 N 5 NOTE D Average D...

Page 74: ...t should not be appeared noise 11 Check the OSM off when push the Select switch with EXIT icon highlighted 3 2 Frequency change 1 Change the preset timing 2 Check the picture and the time when freq ch...

Page 75: ...layer and verify proper connection 2 Input VESA 1280x1024 75Hz 3 Display the OSM menu Use the SELECT key to move as far as to the Volume tag 4 Confirm that the yellow bar changes and the audio volume...

Page 76: ...should be kept below 0 35A 10 4 2 Power Source Earth Connections a Checks on the power source earth connections The earth side of the cord or the earth wire of the inlet filter for the cord set should...

Page 77: ...50V for one minute Even though the result of this testing is OK such a condition should be regarded as unacceptable if there is a leakage flashing around the section where the test voltage has been ap...

Page 78: ...ents of the judgment standard are met 1 Measuring conditions Measuring instrument 500V DC MEGOHM Meter Testing point Between the power circuit block and the exposed metallic block D SUB connector Meas...

Page 79: ...1 System Connection This system should be connected as shown below DDC Communication I F BOARD Part No 599910541 5 2 Input Signal Horizontal synchronization frequency 31kHz Negative Vertical synchroni...

Page 80: ...ice tool Ver 3 14 Parameter ver 2 0 S14 in a proper directory 3 Start Service2 EXE of the service tool Ver 3 14 4 When the screen as shown below appears check to LCD of Monitor Type and press the STAR...

Page 81: ...data are displayed in the columns of EDID DATA CONTENTS and Serial information If all the displayed data are FF or the like or if the serial number is different from that of the corresponding unit th...

Page 82: ...nput OK button Enter an input in the column of Year in manufactured year A D four digits and Month in manufactured month through the keyboard and press the Input OK button 10 When the WRITE EDID butto...

Page 83: ...3 Note 3 00 Note 4 Note 1 address 10h Week of manufacture Month of manufacture 4 Note 2 address 11h Year of manufacture 1990 Note 3 address 71h 7Dh Serial Number ASCII coded If less than 13 char termi...

Page 84: ...5 21 Appendix Reference Signal Timings...

Page 85: ...1 27us 40CLK 2 03us 64CLK Horizontal back porch Thb 4 06us 128CLK 3 81us 120CLK Horizontal front porch Thf 0 76us 24CLK 0 51us 16CLK Horizontal sync polarity NEG NEG Vertical Frequency fv 72 81Hz 75...

Page 86: ...hp 2 40us 120CLK 1 62us 80CLK Horizontal back porch Thb 1 28us 64CLK 3 23us 160CLK Horizontal front porch Thf 1 12us 56CLK 0 32us 16CLK Horizontal sync polarity POS NEG POS Vertical Frequency fv 72 19...

Page 87: ...1 28us 128CK 1 04us 112CLK Horizontal back porch Thb 1 44us 144CLK 2 89us 312CLK Horizontal front porch Thf 0 32us 32CLk 0 89us 96CLK Horizontal sync polarity NEG POS Vertical Frequency fv 75 06Hz 60...

Page 88: ...0CLK Horizontal sync pulse Thp 1 07us 144CLK Horizontal back porch Thb 1 84us 248CLK Horizontal front porch Thf 0 12us 16CLK Horizontal sync polarity POS Vertical Frequency fv 75 03Hz Frame time total...

Page 89: ...3 Checking the Back Light Unit 6 5 4 Abnormal Screen 6 6 5 Abnormal Plug and Play Operation 6 7 6 Checking the Sync Signal Interface Circuit 6 8 6 1 Checking the Horizontal Sync Pulse Control Circuit...

Page 90: ...e time of the frequency that it over spec timing NO YES NG OK Proceed section 2 Nothing display on screen Check if the sync signal from Computer is output and if the video cable is connected normally...

Page 91: ...gnal output on the host 2 Reconnect the video cable 3 Change the video cable Check OSM menu is displayed on screen when you push the AUTO RESET SELECT Key Failure point The cable is disconnected Next...

Page 92: ...ovided to pin1 pin 2 and pin 3 of S404 in MAIN board OK Check the data signal output on U405 LVDS O LVDS E pin Failure point Printed wire broke between U405 S404 line Failure point U405 failure Failur...

Page 93: ...ure Failure point F101 failure Check the ON FF signal of equal H at CN51 pin6 in Smart Power BD OK NG Failure point Power Area of Smart Power Board failure Is 12V voltage provided from Smart Power BD...

Page 94: ...and B video signal output from host computer Check computer 2 Video signal cable disconnection Check the R B G input signals on U405 pins 135 131 127 respectively that their level is 0 7Vp p typical...

Page 95: ...ial data on U401 pins 5 6 NG Failure point U401 failure Failure point 1 The host machine isn t communicating in DDC2B mode 2 The video cable may have failed or may not to have connections for DDC 3 Be...

Page 96: ...NG OK Failure point 1 No separate sync or sync output by Confirm the host output the sync signal 2 Video cable may have failed 3 Printed wire broke between P401 pin 13 and U402 pin 1 4 B401 or R415 o...

Page 97: ...nal on U402 pin 5 at TTL level NG Failure point 1 No separate sync output signal from the host Check the host 2 Video cable may have failed 3 Printed wire broke between P401 pin 14 and U402 pin 5 4 B4...

Page 98: ...3 115 124 128 132 136 143 157 Is there 2 5V SUPPLY ON U405 pins 20 43 46 59 61 63 74 77 79 98 117 119 138 NG OK Is 14 318M Hz clock input to U405 pins 102 103 at TTL level NG OK OK Proceed section 8 N...

Page 99: ...6 11 8 No Power On Check the 5V power provided from Power Board NG OK Failure point Power Board failure Check both 3 3V and 2 5V power from U404 NG OK Failure point Check U404 U405 failure...

Page 100: ...Failure point Check the trace from U501 pin 7 to U405 pin 24 Failure point U501 failure Is there Audio ON Volume is tuned to Max when enter OSD function and Audio input signal Check STBY Is there 5V...

Page 101: ...Power Input 7 2 1 2 DC to DC Circuit 7 2 1 3 Panel Vcc Control 7 2 2 Scaling IC 7 2 2 1 Clock Circuit 7 2 2 2 I2C Buses 7 2 2 3 Key Scanning 7 2 2 4 Reset 7 3 2 5 LED Control 7 3 2 6 AUDIO Control 7 3...

Page 102: ...stay at Low level the panel voltage is 0V 2 Scaling IC Scaling IC U405 has micro controller ADC scaling color control and LVDS transmit functions 2 1 Clock Circuit Crystal X401 generates 14 318MHz cl...

Page 103: ...control Q406 for LED ORANGE LED GREEN is synchronized with the back light control PBIAS 2 6 AUDIO Control U405 pin24 control U501 for Audio Volume U405 pin18 control U501 for STBY U405 pin19 control...

Page 104: ...401 D sub Connector U407 1M Memory S404 To Panel S405 To Key BD S402 Serial Port J502 To Headphone S502 To Speaker J501 Audio IN S403 To Power BD U408 I2C 24LC16B H V R G B 5V Panel VCC On Off Backlig...

Page 105: ...TR NPN 2SC2412K T146 Q406 EN000413 CHIP TR NPN 2SC2412K T146 Q407 EN000413 CHIP TR NPN 2SC2412K T146 DIODES D401 EX700216 DIODE RB495D D402 EX500216 CHIP DIODE DAN217 T146 D403 EX500216 CHIP DIODE DAN...

Page 106: ...608S121G B419 HM017031 L BEAD SMD MHC1608S121P B420 HM017031 L BEAD SMD MHC1608S121P B422 HM017021 L BEAD SMD MCB1608S121G L501 HA200271 L CHOKE 10UH 8 10 LBEAD HC006002 BEAD 3 5X4 7 T ELECTRICAL PART...

Page 107: ...R406 FN017509 CHIP RES 1 10W T 1 75OH R407 FM010101 CHIP RES 1 10W T 5 100O R408 FN017509 CHIP RES 1 10W T 1 75OH R409 FN517509 R SMD METAL 1 3W 75 F T 1 R410 FN517509 R SMD METAL 1 3W 75 F T 1 R411...

Page 108: ...64 FM010103 CHIP RES 1 10W T 5 10KO R465 FM010103 CHIP RES 1 10W T 5 10KO R466 FM010103 CHIP RES 1 10W T 5 10KO R467 FM010103 CHIP RES 1 10W T 5 10KO R468 FM010103 CHIP RES 1 10W T 5 10KO R469 FM01010...

Page 109: ...C419 GX410423 C SMD X7R 0 1U 16V K 0603 C420 GX410423 C SMD X7R 0 1U 16V K 0603 C421 GX410423 C SMD X7R 0 1U 16V K 0603 C422 GGR22714 VC ELE105 220U 10V M T L C423 GX410423 C SMD X7R 0 1U 16V K 0603...

Page 110: ...ELE105 680U 10V M T LO C470 GX410353 C SMD X7R 0 01U 50V K 060 C471 GGR68714 C ELE105 680U 10V M T LO C472 GX410353 C SMD X7R 0 01U 50V K 060 C473 GX433052 C SMD C0G 33P 50V J 0603 C474 GX433052 C SMD...

Page 111: ...P TR NPN 2SC2412K T146 Q406 EN000413 CHIP TR NPN 2SC2412K T146 Q407 EN000413 CHIP TR NPN 2SC2412K T146 DIODES D401 EX700216 DIODE RB495D D402 EX500216 CHIP DIODE DAN217 T146 D403 EX500216 CHIP DIODE D...

Page 112: ...AD SMD MCB1608S121G B419 HM017031 L BEAD SMD MHC1608S121P B420 HM017031 L BEAD SMD MHC1608S121P B422 HM017021 L BEAD SMD MCB1608S121G B501 HC006002 BEAD 3 5X4 7 T L501 HA200271 L CHOKE 10UH 8 10 ELECT...

Page 113: ...IP RES 1 10W T 1 75OH R407 FM010101 CHIP RES 1 10W T 5 100O R408 FN017509 CHIP RES 1 10W T 1 75OH R409 FN517509 R SMD METAL 1 3W 75 F T 1 R410 FN517509 R SMD METAL 1 3W 75 F T 1 R411 FN517509 R SMD ME...

Page 114: ...65 FM010103 CHIP RES 1 10W T 5 10KO R466 FM010103 CHIP RES 1 10W T 5 10KO R467 FM010103 CHIP RES 1 10W T 5 10KO R468 FM010103 CHIP RES 1 10W T 5 10KO R469 FM010103 CHIP RES 1 10W T 5 10KO R470 FM01010...

Page 115: ...3 C420 GX410423 C SMD X7R 0 1U 16V K 0603 C421 GX410423 C SMD X7R 0 1U 16V K 0603 C422 GGR22714 VC ELE105 220U 10V M T L C423 GX410423 C SMD X7R 0 1U 16V K 0603 C424 GGR68714 C ELE105 680U 10V M T LO...

Page 116: ...LO C470 GX410353 C SMD X7R 0 01U 50V K 060 C471 GGR68714 C ELE105 680U 10V M T LO C472 GX410353 C SMD X7R 0 01U 50V K 060 C473 GX433052 C SMD C0G 33P 50V J 0603 C474 GX433052 C SMD C0G 33P 50V J 0603...

Page 117: ...HIP TR NPN 2SC2412K T146 Q406 EN000413 CHIP TR NPN 2SC2412K T146 Q407 EN000413 CHIP TR NPN 2SC2412K T146 DIODES D401 EX700216 DIODE RB495D D402 EX500216 CHIP DIODE DAN217 T146 D403 EX500216 CHIP DIODE...

Page 118: ...EAD SMD MCB1608S121G B419 HM017031 L BEAD SMD MHC1608S121P B420 HM017031 L BEAD SMD MHC1608S121P B422 HM017021 L BEAD SMD MCB1608S121G B501 HC006002 BEAD 3 5X4 7 T L501 HA200271 L CHOKE 10UH 8 10 ELEC...

Page 119: ...0W T 5 47K R405 FM010272 R SMD METAL 1 10W 2 7K J R406 FN012009 R SMD 1 10W 20H F 0603 R407 FM010101 CHIP RES 1 10W T 5 100O R408 FN012009 R SMD 1 10W 20H F 0603 R409 FN517509 R SMD METAL 1 3W 75 F T...

Page 120: ...462 FM010103 CHIP RES 1 10W T 5 10KO R464 FM010103 CHIP RES 1 10W T 5 10KO R465 FM010103 CHIP RES 1 10W T 5 10KO R466 FM010103 CHIP RES 1 10W T 5 10KO R467 FM010103 CHIP RES 1 10W T 5 10KO R468 FM0101...

Page 121: ...C418 GX410423 C SMD X7R 0 1U 16V K 0603 C419 GX410423 C SMD X7R 0 1U 16V K 0603 C420 GX410423 C SMD X7R 0 1U 16V K 0603 C421 GX410423 C SMD X7R 0 1U 16V K 0603 C422 GGR22714 VC ELE105 220U 10V M T L...

Page 122: ...10353 C SMD X7R 0 01U 50V K 060 C471 GGR68714 C ELE105 680U 10V M T LO C472 GX410353 C SMD X7R 0 01U 50V K 060 C473 GX433052 C SMD C0G 33P 50V J 0603 C474 GX433052 C SMD C0G 33P 50V J 0603 C475 GGR687...

Page 123: ...TAL 14 3MHz Scalar Gm2121 DC DC 5V 3 3V 5V 2 5V EEPROM 24LC16B DDC 24LC02B Function Key Board Brightness Inverter ON OFF 5V DDC Clock DDC Data R G B Hs Vs NVRAM Clock NVRAM Data LVDS SW Panel ON OFF S...

Page 124: ...103P 1 2 R445 NC R467 10k C456 NC R448 10K R447 NC R454 4K7 B415 120R S405 HEADER 9 1 2 3 4 5 6 7 8 9 C476 4 7UF 25V 1 2 R446 10K B416 120R B417 120R C472 103P 1 2 C471 680U 10V 1 2 R471 NC R462 10K...

Page 125: ...2K R413 57R6 R423 0 B425 0 U401 24AA02 4 8 1 2 3 7 6 5 GND VCC A0 A1 A2 WP SCL SDA R410 75R D401 RB495D 3 1 2 C405 0 01uF TP401 GND R405 2K7 R414 57R6 C409 47p C406 0 01uF ZD405 UDZS5 6B 1 2 R408 75R...

Page 126: ...LK RESETn GPIO21 IRQn GPIO15 DDC_SCL GPIO14 DDC_SDA GPIO9 GPIO8 IRQINn STI_TM1 ROM_ADDR0 ROM_ADDR1 ROM_ADDR2 ROM_ADDR3 ROM_ADDR4 ROM_ADDR5 ROM_ADDR6 ROM_ADDR7 ROM_ADDR8 ROM_ADDR15 ROM_DATA0 ROM_DATA1...

Page 127: ...n HP sense Gain Sel Beep Bypass Vdd Right Out ShutDown Right Out Left Out R2in Left Out Mute Mode Left Dock Lift in RightDock Vdd Vdd GND GND GND GND GND R2fin DC Vol Control L2in L2fin B501 R502 20K...

Page 128: ...11 1 Packing specification 1 2 3 4 5 6 7 8 9 10 11 12 13 14...

Page 129: ...172R6 A 13401191 A B 7 EPE BAG 480x410 13700551 B Black 8 PE BAG 750X600 13700541 A B 9 PE BAG 370 270MM 13700461 A B 10 SHEET SETUP LCD71VM A 15800491 A White Black 10 SHEET SETUP LCD71VM B 15800501...

Search results

Summary of Contents for AccuSync LCD71VM

Reviews:

Related manuals for AccuSync LCD71VM

Brands by name

Popular brands

NEC AccuSync LCD71VM, Service Manual

Search results

Summary of Contents for AccuSync LCD71VM

Reviews:

Related manuals for AccuSync LCD71VM

Brands by name

Popular brands