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NEC AccuSync LCD51VM Service Manual
Summary of AccuSync LCD51VM
Page 1
Color monitor accusync tm lcd51vm model id lcd51vm(a)/-bk(a)/-bk(b) 200309 08r510ay 08r520ay 08r520by service manual part no. 599910663 1st edition nec-mitsubishi electric visual systems corporation july 2003.
Page 2
Warning the service personnel should have the appropriate technical training, knowledge and experience necessary to: • be familiar with specialized test equipment, and • be careful to follow all safety procedures to minimize danger to themselves and their coworkers. To avoid electrical shocks, this ...
Page 3: Contents
Contents page no. User's manual -------------------------------------------------------------------- 1-1 serial number information ---------------------------------------------- 2-1 disassembly ----------------------------------------------------------------------- 3-1 adjustment procedures --------...
Page 4: User'S Manual
1-1 user's manual 1. A version accusync tm lcd51vm/lcd71vm.
Page 5: Index
1-2 warning .................................................................................................................... 1 contents ................................................................................................................. 2 quick start ...................................
Page 6
1-3 1 caution: to reduce the risk of electric shock, make sure power cord is unplugged from wall socket. To fully disengage the power to the unit, please disconnect the power cord from the ac outlet. Do not remove cover (or back). No user serviceable parts inside. Refer servicing to qualified servic...
Page 7: Contents
1-4 2 contents * remember to save your original box and packing material 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 manua l • base stand a accusy...
Page 8: Quick Start
1-5 3 quick start to attach the base to the lcd stand: 1. Insert the front of the lcd stand into the holes in the front of the base. 2. Next, position the locking tabs on the back side of the lcd stand with the holes on the base. Lower the stand until locking tabs are secure. To attach the accusync ...
Page 9: Quick Start
1-6 4 quick start –continued note: some macintosh systems do not require a macintoshcable adapter y qq figure a.1 figure c.1 figure a.2 macintosh cable adapter (not include) pp figure b.1 sub) holder headphone audio input power button.
Page 10: Quick Start
1-7 5 tilt grasp both sides of the monitor screen with your hands and adjust the tilt as desired (figure ts.1). Remove monitor stand for mounting to prepare the monitor for alternate mounting purposes: 1. Disconnect all cables. 2. Place monitor face down on a nonabrasive surface (figure r.1). 3. Rem...
Page 11: Quick Start
1-8 6 quick start –continued removing the base note: always remove the base when shipping the lcd. 1. Place monitor face down on a non-abrasive surface (figure r.1). 2. While using your thumbs, press the bottom tabs upward to unlock. 3. Press the top tabs down to unlock and pull off the stand. Conne...
Page 12: Controls
1-9 7 controls osm ® (on-screen manager) control buttons on the front of the ® monitor function as follows: volume m u t e % osm displayed shortcut to bright adjust window g button osm off shortcut to volume adjust window “auto adjust“ function osm on (icon selection stage) moves to adjustment stage...
Page 13: Controls
1-10 8 controls –continued audio control the sound volume of speakers and headphone. To mute the speaker sound, press the auto/reset key. P p p p brightness adjusts the overall image and background screen brightness. Contrast adjusts the image brightness in relation to the background. Auto contrast ...
Page 14: Controls
1-11 9 controls –continued osm ® warning: osm warning menus disappear with select button. No signal: this function gives a warning when there is no signal present. G g g pp g pp after power is turned on or when there is a change of input signal or video g g g p g g g p is inactive, the p no signal w...
Page 15: Recommended Use
1-12 10 recommended use safety precautions and maintenance for optimum performance, please note the following when setting up and using the accusync lcd color monitor: • do not open the monitor. There are no user serviceable parts inside and opening or removing covers may expose you to dangerous sho...
Page 16: Recommended Use
1-13 11 recommended use –continued correct placement and adjustment of the monitor can reduce eye, shoulder and neck fatigue. Check the following when you position the monitor: • for optimum performance, allow 20 minutes for warm-up. • adjust the monitor height so that the top of the screen is at or...
Page 17: Specifications
1-14 12 specifications monitor accusync lcd51vm notes specifications monitor monitor accusyn monitor accus lcd module 15.0 inch active matrix; thin film transistor (tft) diagonal: 15.0 inch liquid crystal display (lcd); 0.297 mm dot viewable image size: 1024 x 768 pitch; 250cd/m native resolution (p...
Page 18: Specifications
1-15 13 specifications –continued monitor accusync lcd71vm notes specifications monitor monitor accusyn monitor accus lcd module 17.0 inch active matrix; thin film transistor (tft) diagonal: 17.0 inch liquid crystal display (lcd); 0.264 mm dot viewable image size: 1280 x 1024 pitch; 250cd/m native r...
Page 19: Features
1-16 14 features reduced footprint: provides the ideal solution for environments requiring superior image quality but with size and weight limitations. The monitor’s small footprint and low weight allow it to be moved or transported easily from one location to another. Accucolor ® control systems ® ...
Page 20: Troubleshooting
1-17 15 troubleshooting rr no picture • the signal cable should be completely connected to the display card/computer. • the display card should be completely seated in its slot. • front power switch and computer power switch should be in the on position. • check to make sure that a supported mode ha...
Page 21: References
1-18 16 references nec-mitsubishi monitor customer service & support customer service and technical support: (800) 632-4662 fax: (800) 695-3044 parts and accessories/macintosh cable adapter: (888) nec-mits [888-632-6487] customer service policies & processes: http://www.Necmitsubishi.Com/ css/servic...
Page 22: Limited Warranty
1-19 17 limited warranty nec-mitsubishi electronics display of america, inc. (hereinafter “nmd-a”) warrants this product to be free from defects in material and workmanship and, subject to the conditions set forth below, agrees to repair or replace (at nmd-a’s sole option) any part of the enclosed u...
Page 23: Tco’99
1-20 18 tco’99 congratulations! You have just purchased a tco’99 approved and labelled product! Your choice has provided you with a product developed for professional use. Your purchase has also contributed to reducing the burden on the environment and also to the further development of environmenta...
Page 24: Tco’99
1-21 19 tco’99 –continued accumulative* processes. Flame retardants have been found in human blood and researchers fear that disturbances in foetus development may occur. Tco’99 demand requires that plastic components weighing more than 25 grams must not contain flame retardants with organically bou...
Page 25
1-22 20 declaration of the manufacturer we hereby certify that the color monitor accusync™ lcd51vm (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 n...
Page 26
1-23 part no. 15501681 printed in china proprietary notice and liability disclaimer the information disclosed in this document, including all designs and related materials, is the valuable property of nec- mitsubishi electronics display of america and/or its licensors, as appropriate, reserve all pa...
Page 27: Accusync Lcd51Vm
1-24 2. B version accusync lcd51vm accusync lcd71vm user’s manual.
Page 28: Declaration
1-25 english english-1 declaration declaration of the manufacturer to prevent fire or shock hazards, do not expose this unit to rain or moisture. Also, do not use this unit’s polarized plug with an extension cord receptacle or other outlets unless the prongs can be fully inserted. Refrain from openi...
Page 29: Declaration of Conformity
1-26 english-2 for the customer to use in u.S.A. Or canada canadian department of communications compliance statement doc: this class b digital apparatus meets all requirements of the canadian interference-causing equipment regulations. Cet appareil numérique de la classe b respecte toutes les exige...
Page 30: Contents
1-27 english english-3 contents 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 • cd-rom * remember to save your original box and packing material to transport or ship the monit...
Page 31
1-28 english-4 6. No-touch auto adjust automatically adjusts the monitor to optimal settings upon initial setup for most timings. For further adjustments, use the following osm controls: • auto adjust contrast • auto adjust refer to the controls section of this user’s manual for a full description o...
Page 32
1-29 english english-5 figure r.1 non-abrasive surface figure r.2 figure r.3 removing the base note: always remove the base when shipping the lcd. 1. Place monitor face down on a non-abrasive surface (figure r.1). 2. While using your thumbs, press the bottom tabs upward to unlock. 3. Press the top t...
Page 33: Controls
1-30 english-6 volume m u t e % o s m t u r n o f f controls osm (on-screen manager) control buttons on the front of the monitor function as follows: 1. Basic function at pressing each key note: to quit the osm screen at any time during the operation, press select key for longer than 3 seconds. 2. O...
Page 34
1-31 english english-7 audio audio volume icon is chosen, depending on the volume condition (auto/reset). Brightness adjusts the overall image and background screen brightness. Contrast adjusts the image brightness in relation to the background. Auto contrast adjusts the image displayed for non-stan...
Page 35
1-32 english-8 osm lock out this control completely locks out access to all osm control functions without brightness and contrast. When attempting to activate osm controls while in the lock out mode, a screen will appear indicating the osm are locked out. To activate the osm lock out function, press...
Page 36: Recommended Use
1-33 english english-9 recommended use safety precautions and maintenance for optimum performance, please note the following when setting up and using the accusync lcd colour monitor: • do not open the monitor. There are no user serviceable parts inside and opening or removing covers may expose you ...
Page 37
1-34 english-10 correct placement and adjustment of the monitor can reduce eye, shoulder and neck fatigue. Check the following when you position the monitor: • for optimum performance, allow 20 minutes for warm-up. • adjust the monitor height so that the top of the screen is at or slightly below eye...
Page 38
1-35 english english-11 specifications lcd51vm monitor monitor specifications accusync lcd51vm monitor notes lcd module diagonal: 38.1 cm/15 inches active matrix; thin film transistor (tft) viewable image size: 38.1 cm/15 inches liquid crystal display (lcd); 0.297 mm dot native resolution (pixel cou...
Page 39
1-36 english-12 specifications lcd71vm monitor monitor specifications accusync lcd71vm monitor notes lcd module diagonal: 43.2 cm/17 inches active matrix; thin film transistor (tft) viewable image size: 43.2 cm/17 inches liquid crystal display (lcd); 0.264 mm dot native resolution (pixel count): 128...
Page 40: Features
1-37 english english-13 features reduced footprint: provides the ideal solution for environments requiring superior image quality but with size and weight limitations. The small footprint and low weight allow it to be moved or transported easily from one location to another. Accucolor control system...
Page 41: Troubleshooting
1-38 english-14 troubleshooting no picture • the signal cable should be completely connected to the display card/computer. • the display card should be completely seated in its slot. • check front power switch and computer power switch should be in the on position. • check to make sure that a suppor...
Page 42: Tco’99
1-39 english english-15 congratulations! You have just purchased a tco’99 approved and labelled product! Your choice has provided you with a product developed for professional use. Your purchase has also contributed to reducing the burden on the environment and also to the further development of env...
Page 43: Serial Number Information
2-1 serial number information refer to the serial number information shown below. G g g g g g g g g g manufactured year : ( last digit ) manufactured month : january to september 1 to 9 october x november y december z classification code : discriminate by cabinet color white : 0 black : 1 running nu...
Page 44: Disassembly
3-1 disassembly g before you disassemble the set, turn off power and pull out the power plug. G use 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 14300...
Page 45
3-2 symbol part no for npg description cabinet color 3 14000411 sc,cbissx3x8x3g white 3 14000401 sc,cbissx3x8x3k black 4 14000381 sc,cbissx3x14x3g white 4 14000431 sc,cbissx3x14x3k black 5 10103781 back,l152r5-wh-nsp white 5 10104211 back,l152r5-bk-nsp black 5 4 3.
Page 46
3-3 symbol part no for npg description 6 14000391 sc,cbips*3*10*15b 7 as0r51ml sw insert assy 8 jn100021 speaker assy 9 14300201 4#-40tx4.8hlx4x5-ni/w symbol part no for npg description cabinet color ver 10 10104131 bezel,l152r5-wh-nsp-assy white a ver 10 10104221 bezel,l152r5-bk-nsp-assy black a ve...
Page 47
3-4 symbol part no for npg description 12 14300211 p2.5*4 mc (ni) symbol part no for npg description 13 14000121 screw cup(3*8*15bf) 14 12301171 shielding cover 15 12000881 chassis base,l152r5-nsp-lg 16 14300211 p2.5*4 mc (ni) cn53 cn52 12 13 14 15 16 s404.
Page 48
3-5 symbol part no for npg description 17 rc200291 wire 20p-20p l90 lvds 18 jg555011 lcd nl10276bc30-10 nec 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 l260 18 17 20 21 19 19 s403 s405 s502.
Page 49
3-6 symbol part no for npg description 22 am0r51mn main insert assy 23 jm100061 power b/d (15"nec) symbol part no for npg description cabinet color 24 11002101 stand cover t,l152r5-wh white 24 11002141 stand cover t,l152r5-bk black 25 12301351 shield tco(t), l152r5 --- 26 14000251 screw(3*8 truss he...
Page 50: Adjustment Procedures
4-1 adjustment procedures table of contents page 1. Application ............................................................................................................................. 4-2 2. Default setting ..........................................................................................
Page 51
4-2 1. Application this adjustment specification should be applied to the lcd51vm (l152r5) adjustment. 2. Default setting item condition power supply ac100v~240vac input freq. 1024 ×768@75hz volume 50% mute off brightness 100% contrast 50% color temp. User (r: 100%, g: 100%, b: 100%) osm time off 45...
Page 52
4-3 3.2 hot key for factory adjust a) press “select” button then open 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” bu...
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
4-5 4. Adjustment 4.1 measuring instruments, jigs and tools the measuring instruments, jigs, and tools required at the time of the adjustment of the unit to be adjusted are as specified below. A. A signal generator that can generate an output of signal timing produced by the adjusted (*) vg-819 or s...
Page 55
4-6 4.5 panel brightness check 1) enter an input signal of 1024 ×768 (75hz), in full white pattern. 2) osm setting “brightness” to max. (100%) and “contrast” to 100%. 3) color temperature setting to “user” (r: 100%, g: 100%, b: 100%). 4) check the center luminance should ≥ 200cd/m 2 . 4.6 panel colo...
Page 56
4-7 5. Reference signal timing item abbreviation vesa 1024x768 75hz pixel frequency fc 78.75mhz horizontal frequency fh 60.02khz line time total th 16.66us 1312clk horizontal active display thd 13.00us 1024clk horizontal sync pulse thp 1.22us 96clk horizontal back porch thb 2.24us 176clk horizontal ...
Page 57
4-8 1 2 3 4 5 6 7 a u to g a i n r e d 2 4 4 g a i n g r e e n 2 5 0 g a i n b l u e 2 2 0 o f f s e t r e d 9 0 o f f s e t g r e e n 8 5 o f f s e t b l u e 8 2 1 2 3 4 5 6 7 o s d d e s i g n 0 o s d s e l e c t o s m u r l 1 f i r s t a u to o n t h r e s h o l d 4 6. Factory mode explanations o...
Page 58
4-9 auto count: no. Of auto-adjustment trials conducted by the user. * this value can reset by factory reset of service menu. Auto cont count: no. Of auto-contrast control trials conducted by the user * this value can reset by factory reset of service menu. Pwmo preiod: backlight brightness control ...
Page 59
4-10 on: total accumulated time during the reception of input signals (led: green) off: total accumulated time in the power-saving mode (led: amber) * the accumulated time (hours running) is not reset even when factory reset is executed. F/w version: firmware version 1 2 3 4 5 6 7 h o u r s r u n n ...
Page 60
4-11 7. Preset timing sheet no. 1 2 item abbreviation vga 640x480 60hz mac 640x480 pixel frequency fc 25.175mhz 30.24mhz horizontal frequency fh 31.47khz 35.00khz line time total th 31.78us 800clk 28.57us 864clk horizontal active display thd 25.42us 640clk 21.16us 640clk horizontal sync pulse thp 3....
Page 61
4-12 no. 7 8 item abbreviation vesa 800x600 56hz vesa 800x600 60hz pixel frequency fc 36.00mhz 40.00mhz horizontal frequency fh 35.16khz 37.88khz line time total th 28.44us 1024clk 26.40us 1065clk horizontal active display thd 22.22us 800clk 20.00us 800clk horizontal sync pulse thp 2.00us 72clk 3.20...
Page 62
4-13 no. 13 14 item abbreviation vesa 1024x768 70hz vesa 1024x768 75hz pixel frequency fc 75.000mhz 78.75mhz horizontal frequency fh 56.48khz 60.02khz line time total th 17.71us 1328clk 16.66us 1312clk horizontal active display thd 13.65us 1024clk 13.00us 1024clk horizontal sync pulse thp 1.81us 136...
Page 63: Inspection
5-1 inspection table of contents page 1. General description ------------------------------------------------------------------------------------------ 5-2 2. Electrical characteristics ------------------------------------------------------------------------------------ 5-3 2.1 power supply --------...
Page 64
5-2 1. General description product specifications nec nl10276bc30-10 pixel pitch 0.297mm resolution 1024x768 pixels (xga) color 16.77 million colors (r,g, b: 6bit + frc) brightness 250cd/m 2 (typical) contrast ratio 450:1 (typical) lcd module viewing angle 60/60(l/r), 40/60(u/d) (cr>=10: typical) 50...
Page 65
5-3 power supply universal ac100-240v current rating 0.45a @ 100 – 120v, 0.25a @ 220 – 240v temp. 5 - 35degc operational environment humid. 30 - 80% temp. -10 - 60degc storage environment humid. 10 - 85% net 347.4(w) x 341.9(h) x 183.5(d) mm dimension gross 391(w) x 395(h) x 122(d) mm net 3.0kg weig...
Page 66
5-4 2.2 lcd without acrylic panel lcd active matrix thin-film-transistor (tft) effective display size 304.1(h) x 228.1(v) mm pixel number 1024 x 768 pixels color filter arrangement r.G.B. Vertical stripe display method tn with wv film, normally white drive method active matrix (amorphous si tft) pix...
Page 67
5-5 2.3.2 full scan capacity in case the input video mode is not 1024x768, the image area should be expanded to 1024x768 smoothly with the function of scaling engine. Standard resolution: 1024x768 expand method: full expand mode with smoothing as follows down scaling: down scaling at over 1024x768 m...
Page 68
5-6 2.4.3 built-in speakers type: micro speaker (8Ω, 1w + 1w) without box nominal impedance: 8 ohm maximum input power: 1 w/ch resonance frequency: less than 450hz speaker size: 40 x 20 mm when headphone connected to headphone jack, speaker outputs should be disabled. 2.4.4 characteristic frequency ...
Page 69
5-7 2.5 external inspection on the lcd module 2.5.1 inspection conditions temperature: 25 ±5°c viewing distance: 20cm (the distance between the inspector’s eye and screen.) direction and illumination: inspection for display specification: 0 ° ≤ θr ≤ 30°, 0° ≤ θl ≤ 30° 0 ° ≤ θu ≤ 20° 50 to 75 lx at a...
Page 70
5-8 note 1: r + g, 2 dots continued horizontally counted as ng not counted combinations of bright and dark dots combinations other than horizontal adjacent note 2: (1) + (2) ≤ 2 sets note 3: adjacent 3 dots counted as ng not counted all of dots are bright dots and dark dots combinations of bright an...
Page 71
5-9 note 6: close each set of (6) distance between each set of (6) must be more than 10mm. Note 7: 2 or more defect dots (5) in 5 ×5 pixels. When 2 or more defect dots (5) in 5 ×5 pixels, the set of the dot defects is counted as 1 cluster. Note 8: 2 or more sets of (1) and (2) in 5 ×5 pixels. Allowe...
Page 72
5-10 2.5.3 appearance specifications defect pattern condition (note 1) criteria d ≤ 0.2mm allowed 0.2mm ≤ 10 points 0.3mm ≤ d ≤ 0.5mm ≤ 3 points d > 0.5mm dot shape adjacent other objects 0 point w l allowed 0.7mm ≤ l ≤ 1.0mm ≤ 4 points 0.05mm ≤ w ≤ 0.1mm l > 1.0mm impure ingredient stains dust line...
Page 73
5-11 3. Electrical inspection 3.1 function switch check 1. Input vesa 1024x768 (75hz) pattern “crosshatch”. 2. Image should appear within 4 seconds after switch on. 3. Led is green. 4. On-screen noise should not appear while the switch is turned on or off. 5. Osm should be displayes by pushing the “...
Page 74
5-12 3.5 inspection on audio function purpose of inspection: confirming that the audio function works normally. 1. Connect audio-in from a pc or an audio player and verify proper connection. 2. Input vesa 1024x768 (75hz). 3. Display the osm menu. Use the select key to move as far as to the volume ta...
Page 75
5-13 4. Safety test • destination : all over the world • applicable standards : ul60950/c-ul/en60950 • unit class : class i units (the units protected against electric shocks by protective earthing, or those equipped with 3-core power cords) • ratings : ac100 - 240v 50/60hz 0.7a/0.4a 4.1 input curre...
Page 76
5-14 4.3 dielectric strength test to confirm the freedom from insulation breakdown, testing should be carried out under the conditions specified below. 1) measuring conditions • measuring instrument: dielectric strength tester (the specified voltage should be maintained in the state that a current o...
Page 77
5-15 4.5 insulation resistance test an insulation resistance should be measured under the conditions specified below, in order to confirm that the requirements of the judgment standard are met. 1) measuring conditions • measuring instrument: 500v dc megohm meter • testing point: between the power ci...
Page 78
5-16 5. Inspection of plug & play communication and osm "monitor information" for model name/ serial number 5.1 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) v...
Page 79
5-17 5.4 operation 1) connect the edid data writing unit with jigs, etc. 2) copy all the files of the service 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 ty...
Page 80
5-18 6) when the screen as shown below appears, check to [edid_read] and press the [ok] button. 7) when the screen as shown below appears, confirm that the correct 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 th...
Page 81
5-19 9) when the screen as shown below appears, examine the serial number of the unit, enter an input in the column of [input serial no.] through the keyboard, and press the [input ok] button. Enter an input in the column of [.Year=> ] in manufactured year(a.D. Four digits) and [month=>] in manufact...
Page 82
5-20 11) a display “monitor information.” of the osm, and confirm that the model name (lcd51vm) and serial number have been correctly written. 12) upon the normal completion of edid data writing, press the [exit] button to close the program. 5.5 edid data file edid date: lcd51vm.Edi 0 1 2 3 4 5 6 7 ...
Page 83
5-21 appendix reference signal timings.
Page 84
5-22 no. 1 2 item abbreviation vga 640x480 60hz mac 640x480 pixel frequency fc 25.175mhz 30.24mhz horizontal frequency fh 31.47khz 35.00khz line time total th 31.78us 800clk 28.57us 864clk horizontal active display thd 25.42us 640clk 21.16us 640clk horizontal sync pulse thp 3.81us 96clk 2.12us 64clk...
Page 85
5-23 no. 7 8 item abbreviation vesa 800x600 56hz vesa 800x600 60hz pixel frequency fc 36.00mhz 40.00mhz horizontal frequency fh 35.16khz 37.88khz line time total th 28.44us 1024clk 26.40us 1065clk horizontal active display thd 22.22us 800clk 20.00us 800clk horizontal sync pulse thp 2.00us 72clk 3.20...
Page 86
5-24 no. 13 14 item abbreviation vesa 1024x768 70hz vesa 1024x768 75hz pixel frequency fc 75.000mhz 78.75mhz horizontal frequency fh 56.48khz 60.02khz line time total th 17.71us 1328clk 16.66us 1312clk horizontal active display thd 13.65us 1024clk 13.00us 1024clk horizontal sync pulse thp 1.81us 136...
Page 87: Trouble Shooting
6-1 trouble shooting table of contents page 1. No display on screen (screen is black, led is amber) -------------------------------------------- 6-2 2. No display on screen (screen is black, led is green) -------------------------------------------- 6-3 3. Checking the back light unit --------------...
Page 88
6-2 1. No display on screen (screen is black, led is amber) when a signal isn't input, it is indicated with "no signal". It is indicated with "out of range" at the time of the frequency that it over spec.Timing. No yes ng ok proceed section 2 “no display on screen”. Check if the sync signal from com...
Page 89
6-3 2. No display on screen (screen is black, led is green) ng ok ng ok ok ng ng ok is backlight lit? Refer to section 3 “checking the backlight unit. Does computer output rgb video signals? 1) change pattern of video signal output on the host. 2) reconnect the video cable. 3) change the video cable...
Page 90
6-4 ng continue is 3.3v voltage provided to s404 pins 19, 20 on 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. Failure point check q405and u409. Ng ok.
Page 91
6-5 3. Checking the back light unit ng ok check 5v voltage provided on smart power bd cn21 pin 2 and pin 3. Failure point failure point inverter area of smart power bd failure. Failure point f101 failure. Check the on/off signal of equal “h” at cn51 pin 6 on smart power bd? Ok ng failure point power...
Page 92
6-6 4. Abnormal screen ng ng ok ok check the r, g, b video signal from computer input on d-sub r,g,b connector. Failure point 1) no r, g 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, respec...
Page 93
6-7 5. Abnormal plug and play operation abnormal ddc2b confirm clock and serial 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) between u401 pins ...
Page 94
6-8 6. Checking the sync signal interface circuit 6.1 checking the horizontal sync pulse control circuit check the horizontal sync signal on u402 pin 1 at ttl level. Ng ok failure point 1) no separate sync or sync output by sync on green. (confirm the host, output the sync signal.) 2) video cable ma...
Page 95
6-9 6.2 checking the vertical sync pulse control circuit check the vertical sync signal 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) b402 or...
Page 96
6-10 7. Checking the scaling ic operation is there +3.3v supplied on u405 pins 14, 30, 90, 104, 106, 108, 110, 113,115, 124, 128, 132, 136, 143, 157? Is there +2.5v supplied 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 t...
Page 97
6-11 8. No power on check the +5v power provided from power board. Ng ok failure point power board failure. Check 3.3v power from u403, and 2.5v power from u404. Ng ok failure point check u403 and u404. U405 failure..
Page 98
6-12 9. Checking the audio operation is there audio on, volume is tuned to max when entering osm function, and audio input signal? Check the u501 pins 10, 12. Ng failure point printed wire broke between j501 and u501. Ok check the u501 pins 17, 26. Ng ok next page check the j502 pins 2, 3. Ng ok fai...
Page 99
6-13 is there +5v supplied on u501 pins 6, 16, 27. Ng ok failure point l501 open. Check audio_volume signal of equal” h ” at u501 pin 7. Ng ok failure point check the trace from u501 pin 7 to u405 pin 24. Failure point u501 failure. Check stby. Is there +5v supplied on u501 pin 2? Failure point 1. C...
Page 100: Circuit Description
7-1 circuit description table of contents page 1. Power circuit ------------------------------------------------------------------------------------------------------ 7-2 1.1 power input ------------------------------------------------------------------------------------------------------ 7-2 1.2 dc...
Page 101
7-2 1. Power circuit 1.1 power input 5v dc is input (s403) from power board to interface board. 1.2 dc to dc circuit u403 generates 3.3v for scaling ic, panel and other ics. U404 generates 2.5v for scaling ic. Audio ic, flash memory use 5v directly. 1.3 panel vcc control q405 and u409 are used for p...
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7-3 2.4 reset u405 pin 17: reset signal for scaling ic. U406 provides reset signal. 2.5 led control u405 pin 41: control q404 for led (green) u405 pin 25: control q406 for led (orange) led (green) is synchronized with the back light control, pbias. 2.6 audio control u405 pin 24: control u501 for aud...
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7-4 5. Interface board block diagram u405 scaler gm21121 u403, u404 5v-3.3v 5v-2.5v u401 i2c 24lc02b x401 14.318m hz u409 switch ic u402 74lvc14 u501 audio ic p401 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 pow...
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Replacement parts list(for u.S.) the components specified for model lcd51vm(a) symbol part no for npg description *** ics *** u401 eha50051 ic smd 24lc02b u402 eha50011 ic mos 74lvc14 u403 eha10561 ic smd pj1084cm-3.3 regul u404 eh110301 ic pj1117cz-2.5v to-220 u405 eha10592 ic smd gm2111 ad scaler ...
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Symbol part no for npg description *** coils & filters *** b401 hm011532 chip ferrite bk2125hs431 b402 hm011532 chip ferrite bk2125hs431 b403 hm017021 l bead smd mcb1608s121g b405 hm017031 l bead smd mhc1608s121p b406 hm017011 l bead smd mcb2012s121h b407 hm017021 l bead smd mcb1608s121g b408 hm0170...
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Symbol part no for npg description *** printed & packing materials *** carton 13202691 carton,as51vm wh(a)-nsp carbo 13203381 carton board l152r5(378x112) filleb 13401221 filler b,l152r5(a) fillet 13401211 filler t,l152r5(a) label 15202191 label serial barcode(a,b, manual 15501681 manual,l152r5 l172...
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Symbol part no for npg description r448 fm010103 chip res 1/10w(t) 5% 10ko r449 fm010000 chip res 1/10w(t) 5% 0ohm r450 fm010101 chip res 1/10w(t) 5% 100o r451 fm010101 chip res 1/10w(t) 5% 100o r453 fm010473 chip 1/10w(t) 5% 47k r454 fm010472 chip res 1/10w(t) 5% 4.7k r455 fm010103 chip res 1/10w(t...
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Symbol part no for npg description c405 gx410353 c smd x7r 0.01u 50v k 060 c406 gx410353 c smd x7r 0.01u 50v k 060 c407 gx410353 c smd x7r 0.01u 50v k 060 c408 gx447052 c smd c0g 47p 50v j 0603 c409 gx447052 c smd c0g 47p 50v j 0603 c410 gx410423 c smd x7r 0.1u 16v k 0603 c411 gx410423 c smd x7r 0.1...
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Symbol part no for npg description c453 gx405052 c smd c0g 5p 50v j 0603 c454 gx405052 c smd c0g 5p 50v j 0603 c455 gx410423 c smd x7r 0.1u 16v k 0603 c457 gx410423 c smd x7r 0.1u 16v k 0603 c458 gx410423 c smd x7r 0.1u 16v k 0603 c459 gx410423 c smd x7r 0.1u 16v k 0603 c460 gx410423 c smd x7r 0.1u ...
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Replacement parts list(for u.S.) the components specified for model lcd51vm(a)-bk symbol part no for npg description *** ics *** u401 eha50051 ic smd 24lc02b u402 eha50011 ic mos 74lvc14 u403 eha10561 ic smd pj1084cm-3.3 regul u404 eh110301 ic pj1117cz-2.5v to-220 u405 eha10592 ic smd gm2111 ad scal...
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Symbol part no for npg description b407 hm017021 l bead smd mcb1608s121g b408 hm017021 l bead smd mcb1608s121g b409 hm017021 l bead smd mcb1608s121g b410 hm017021 l bead smd mcb1608s121g b411 hm017021 l bead smd mcb1608s121g b412 hm017021 l bead smd mcb1608s121g b413 hm017021 l bead smd mcb1608s121g...
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Symbol part no for npg description navise 15900251 navi set sheet packin 13700321 pe bag (750*450mm) pebag 13700461 pe bag (370*270mm) rating 15002581 rating label,as51vm bk(a) setup 15800401 sheet,setup as51vm wh(a)- *** resistors *** r402 fm010101 chip res 1/10w(t) 5% 100o r403 fn012009 r smd 1/10...
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Symbol part no for npg description r453 fm010473 chip 1/10w(t) 5% 47k r454 fm010472 chip res 1/10w(t) 5% 4.7k r455 fm010103 chip res 1/10w(t) 5% 10ko r456 fm010103 chip res 1/10w(t) 5% 10ko r457 fm010103 chip res 1/10w(t) 5% 10ko r459 fm010103 chip res 1/10w(t) 5% 10ko r460 fm010102 chip res 1/10w (...
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Symbol part no for npg description c409 gx447052 c smd c0g 47p 50v j 0603 c410 gx410423 c smd x7r 0.1u 16v k 0603 c411 gx410423 c smd x7r 0.1u 16v k 0603 c412 ggm22615 c ele105 22u 10v m(t) low c413 gx410423 c smd x7r 0.1u 16v k 0603 c414 gx410423 c smd x7r 0.1u 16v k 0603 c415 gx410423 c smd x7r 0....
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Symbol part no for npg description c458 gx410423 c smd x7r 0.1u 16v k 0603 c459 gx410423 c smd x7r 0.1u 16v k 0603 c460 gx410423 c smd x7r 0.1u 16v k 0603 c461 gx410423 c smd x7r 0.1u 16v k 0603 c462 gx410423 c smd x7r 0.1u 16v k 0603 c463 gx410423 c smd x7r 0.1u 16v k 0603 c469 ggr68714 c ele105 68...
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Replacement parts list(for europe) the components specified for model lcd51vm(b)-bk symbol part no for npg description *** ics *** u401 eha50051 ic smd 24lc02b u402 eha50011 ic mos 74lvc14 u403 eha10561 ic smd pj1084cm-3.3 regul u404 eh110301 ic pj1117cz-2.5v to-220 u405 eha10592 ic smd gm2111 ad sc...
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Symbol part no for npg description *** coils & filters *** b401 hm011532 chip ferrite bk2125hs431 b402 hm011532 chip ferrite bk2125hs431 b403 hm017021 l bead smd mcb1608s121g b405 hm017031 l bead smd mhc1608s121p b406 hm017011 l bead smd mcb2012s121h b407 hm017021 l bead smd mcb1608s121g b408 hm0170...
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Symbol part no for npg description *** printed & packing materials *** carton 13202941 carton,as51vm bk(b)-nsp cartsh 13202401 carton sheet for 15 in lc cautsh 15800231 caution sheet carbo 13203381 carton board l152r5(378x112) cdassy 19700381 cd,as51vm(b)-nsp cdrom 19700371 cd-rom, lcd71vm(b) epebag...
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Symbol part no for npg description r430 fm010101 chip res 1/10w(t) 5% 100o r433 fm010101 chip res 1/10w(t) 5% 100o r436 fm010103 chip res 1/10w(t) 5% 10ko r438 fm010000 chip res 1/10w(t) 5% 0ohm r439 fm010000 chip res 1/10w(t) 5% 0ohm r440 fm010103 chip res 1/10w(t) 5% 10ko r441 fm010000 chip res 1/...
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Symbol part no for npg description r516 fm010104 chip res 1/10w(t) 5% 100k r518 fm010103 chip res 1/10w(t) 5% 10ko r519 fm010123 r smd metal 1/10w 12k j t r520 fm010103 chip res 1/10w(t) 5% 10ko r521 fm010123 r smd metal 1/10w 12k j t *** capacitors *** c401 gx410423 c smd x7r 0.1u 16v k 0603 c402 g...
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Symbol part no for npg description c442 gx410423 c smd x7r 0.1u 16v k 0603 c443 ggm22615 c ele105 22u 10v m(t) low c444 gx410423 c smd x7r 0.1u 16v k 0603 c445 gx410423 c smd x7r 0.1u 16v k 0603 c446 gx410423 c smd x7r 0.1u 16v k 0603 c447 gx410423 c smd x7r 0.1u 16v k 0603 c448 gx410423 c smd x7r 0...
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9-1 block diagram internal power type ( l152r5-15vm-nec) lcd panel nec 15” nl10276bc30-10 analog video input ac 110/220v input d-sub x’tal 14.3mhz scalar gm2111 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...
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Back-light pwm0 close to pwm to panel power led_a rxe1+ rxe1- rxec+ rxe2+ rxe3+ rxec- lvds_e9 rxe2- rxe3- led_a led_green menu power led_green left right pvcc led_amber right left auto auto led_amber menu pvcc pwm0 audio_volume pwm0 audio_volume bklt_adj bklt_en lvds_e8 lvds_e7 lvds_e6 lvds_e5 lvds_...
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Close to respective power pins 32-pin plcc socket ocm-start a16 a17 full cust pbias_pol reset circuit all unused gpio's can be connected to gnd. For flexibility reasons they are left unconnected. Close to respective power pins close to respective power pins close to respective power pins close to re...
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Near vga pins vs analog ddc 5v_vga vgasda vgascl a-hs a-vs a-blue a-red vga_scl vga_sda a-green +3v3 +3v3 +3v3 gnd_audio gnd vga_5v vga_5v +5v gnd gnd gnd gnd gnd gnd gnd gnd gnd +3v3 +3v3 agnd agnd agnd agnd agnd agnd agnd agnd gnd gnd gnd agnd agnd agnd agnd agnd agnd r405 2k7 b424 75r r406 20r r ...
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To speaker +5v gnd_audio v+ gnd_audio gnd_audio gnd_audio gnd_audio v+ v+ gnd_audio gnd gnd_audio v+ gnd_audio gnd_audio gnd_audio gnd_audio gnd_audio gnd_audio gnd_audio gnd_audio r511 1k c504 0.1u + c519 4.7u/25v 1 2 r518 10k + c516 470u/10v 1 2 c505 0.1u + c515 100u/10v 1 2 r512 100k b501 bead3.5...
Page 127: Packing Specification
11-1 packing specification (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) power cord.
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11-2 item description part no for npg ver. Cabinet color (1) carton board l152r5(378x112) 13203381 a/b white/black (2) caution sheet 15800231 b black (3) cable video dsub-dsub 1.8 re010161 a white (3) cable video dsub-dsub 1.8 re010171 a/b black (4) pw cord na 1.8m gray wans rg020061 a white (4) pw ...