NEC MultiSync LCD1550ME Service Manual Download Page 93

Page: 93 / 131

6-18

13. Check the inverter board circuit

Check Vin pin is around 15.5V.
On/Off pin is over 2V.
Brightness pin is between 0.3V and 3.0V.

It is not inverter problem.

Check IC pin 3 around 5V.

Check Q1, Q2, Q8, D1, F1 and repair them.
Check one of these components was short
to GND.

Check CN2 and CN3 is connected right.

Check CCFL and repair them.

Check the IC pin 3 is PWM.

Check the IC pin 11 is triangle.

Check the Q4, Q10, R5, D5, L1
and repair them.

Check D2, C14, R11and repair them.

Check the IC pin 9 is 2.5V.

Check R20 and R28 and repair them.

Check the IC pin 8 feedback waveform.

Check CR1, CR2 and repair them.

Repair the LM339.

Check the buck circuit.

Summary of Contents for MultiSync LCD1550ME

Page 1: ...COLOR MONITOR MultiSync LCD1550ME MODELS LCD1550ME B BK B 200206 08EK1ABD 08EK2ABD SERVICE MANUAL PART NO 599910589 NEC MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION JUNE 2002 ...

Page 2: ...the 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 maintenance of this unit has been included Therefore it should be read carefully in order to avoid any problems PRODUCT SAFETY CAUTION 1 When parts replacement is required for servicing always use the m...

Page 3: ...USER S MANUAL 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 10 1 ...

Page 4: ...1 1 User s Manual MultiSync LCD1550ME User s Manual ...

Page 5: ...40V AC power source in Europe use the power cord provided with the monitor In the UK a BS approved power cord with a moulded plug has a Black five Amps fuse installed for use with this equipment If a power cord is not supplied with this equipment please contact your supplier When operating the MultiSync LCD1550ME with a 220 240V AC power source in Australia use the power cord provided with the mon...

Page 6: ...1550ME L15XA231 BN MultiSync LCD1550ME L15XA231 BNBK is 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 Mitsubishi Electric Visual Systems Corp MS Shibaura Bldg 13 23 Shibaura 4 chome Minato Ku Tokyo 108 0023 Japan ...

Page 7: ...ulations according to CSA C22 2 950 Ce produit porte la marque C UL et se conforme aux règlements de sûrele Canadiens selon CAN CSA C22 2 No 950 FCC Information 1 Use the attached specified cables with the MultiSync LCD1550ME colour monitor so as not to interfere with radio and television reception 1 The power supply cord you use must have been approved by and comply with the safety standards of U...

Page 8: ...t to which the receiver is connected Consult your dealer or an experienced radio TV technician for help If necessary the user should contact the dealer or an experienced radio television technician for additional suggestions The user may find the following booklet prepared by the Federal Communications Commission helpful How to Identify and Resolve Radio TV Interference Problems This booklet is av...

Page 9: ...Power Cord Video Signal Cable Audio Cable User s Manual CD ROM includes complete User s Manual in PDF format To see the User s Manual Acrobat Reader 4 0 must be installed on your PC Remember to save your original box and packing material to transport or ship the monitor 1550ME ME User s Manual CD ROM Video Signal Cable Audio Cable Power Cord ...

Page 10: ... the 15 pin mini D SUB of the video signal cable to the appropriate connector on the back of the monitor Figure D 1 Place the Video Signal Cable under Clip B 5 Headphones may be connected to the Headphones output on the front of the monitor s bezel marked Figure E 1 While the headphones are connected the sound from the speakers will be disabled Headphones can be purchased from your local electroni...

Page 11: ...al 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 of these OSM controls NOTE If you have any problems please refer to the Troubleshooting section of this User s Manual Figure C 1 Macintosh Cable Adapter not included Macintosh G3 and G4 do ...

Page 12: ...1 9 English 8 Vacation Switch Power Button Figure E 1 Figure D 1 1550ME Figure F 1 Connector cover Cable cover Clip B ...

Page 13: ... Figure R 1 2 Disconnect all cables 3 Place monitor face down on a non abrasive surface Figure R 2 4 Remove the 4 screws connecting the monitor to the stand and lift off the stand assembly Figure R 2 the monitor is now ready for mounting in an alternate manner 5 Connect the AC cord signal cable and audio cable to the back of the monitor Figure R 3 6 Reverse this process to reattach stand NOTE Use ...

Page 14: ...1 11 English 10 Figure R 1 Figure R 2 Figure R 3 Non abrasive surface ...

Page 15: ...monitor must be mounted to an arm which guaranties the necessary stability under consideration of the weight of the monitor The LCD monitor shall only be used with an approved arm e g GS mark 4 SCREWS MAX depth 8 6 mm If use other screw check depth of hole Weight of LCD assembly 3 1kg MAX Replace screws Tighten all screws Thickness of bracket arm 2 0 3 2 mm 75 mm 75 mm ...

Page 16: ...ase the adjustment Activates Auto Adjust function Enter the sub menu Moves the highlighted area of main menu right to select one of the controls Resets the highlighted control to the factory setting When no OSM menu is shown the speaker sound will be muted Controls OSM On Screen Manager Controls The OSM controls on the front of the monitor function as follows To access OSM press any of the control...

Page 17: ...Controls Vertical Image Position within the display area of the LCD H SIZE Adjusts the horizontal size by increasing or decreasing this setting FINE Improves focus clarity and image stability by increasing or decreasing this setting Colour Control Systems Five colour presets select the desired colour setting Each colour setting is adjusted at the factory R G B Increases or decreases Red Green or B...

Page 18: ...e in the Lock Out mode a screen will appear indicating the OSM controls are locked out To activate the OSM Lock Out function press then and hold down simultaneously To de activate the OSM Lock Out press then and hold down simultaneously RESOLUTION NOTIFIER This optimal resolution is 1024 x 768 If ON is selected a message will appear on the screen after 30 seconds notifying you that the resolution ...

Page 19: ...optimized resolution After power is turned on or when there is a change of input signal or the video signal doesn t have proper resolution the Resolution Notifier window will open This function can be disabled in the TOOL menu OUT OF RANGE This function gives a recommendation of the optimized resolution and refresh rate After the power is turned on or there is a change of input signal or the video...

Page 20: ...e cart stand or table as the monitor may fall causing serious damage to the monitor Do not place any objects onto the monitor and do not use the monitor outdoors The inside of the flourescent tube located within the LCD monitor contains mercury Please follow the bylaws or rules of your municipality to dispose of the tube properly Immediately unplug your monitor from the wall outlet and refer servi...

Page 21: ...eye level Your eyes should look slightly downward when viewing the middle of the screen Position your monitor no closer than 40 cm and no further away than 70 cm from your eyes The optimal distance is 53 cm Rest your eyes periodically by focusing on an object at least 6 m away Blink often Position the monitor at a 90 angle to windows and other light sources to minimize glare and reflections Adjust...

Page 22: ...cs To realize the maximum ergonomics benefits we recommend the following Use the preset Size and Position controls with standard signals Use the preset Colour Setting Use non interlaced signals with a vertical refresh rate between 60 75 Hz Do not use primary colour blue on a dark background as it is difficult to see and may produce eye fatigue to insufficient contrast ...

Page 23: ...5 inches 38 cm 15 inches 1024 x 768 ANALOG 0 7 Vp p 75 Ohms Separate sync TTL Level Horizontal sync Positive Negative Vertical sync Positive Negative Notes Active matrix thin film transistor TFT liquid crystal display LCD 0 30 mm dot pitch 250cd m2 white luminence typical 400 1 contrast ratio typical Depends on display card used Automatically Automatically Some systems may not support all modes li...

Page 24: ...anel technologies when displaying non native resolutions full screen In flat panel technologies each dot on the screen is actually one pixel so to expand resolutions to full screen an interpolation of the resolution must be done 2 NEC Mitsubishi Electronics Display cites recommended resolutions at 75 Hz for optimal display performance NOTE Technical specifications are subject to change without not...

Page 25: ...s include OSM controls for quick and easy image adjustments tilt base for preferred angle of vision small footprint and compliance 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 monitor to send its capabilities such as screen size and resolutions supported d...

Page 26: ...Mounting Interface Allows users to connect their MultiSync monitor to any VESA standard 75 mm pitch third party mounting arm or bracket Allows for the monitor to be mounted on a wall or an arm using any third party compliant device ...

Page 27: ...nnector for bent or pushed in pins Power Button does not respond Unplug the power cord of the monitor from the AC outlet to turn off and reset the monitor Check the Vacation Switch on the left hand side of the monitor Image persistence Image persistence is when a ghost of an image remains on the screen even after the monitor has been turned off Unlike CRT monitors LCD monitors image persistence is...

Page 28: ...rning OUT OF RANGE is displayed on a blank screen Signal frequency is out of range Choose one of the supported modes LED on monitor is not lit no green or amber colour can be seen Power Switch should be in the ON position and power cord should be connected Make certain the computer is not in a power saving mode touch the keyboard or mouse Display image is not sized properly Use the OSM Image Adjus...

Page 29: ...1 26 English 25 English No Sound Check to see if speaker cable is properly connected Check to see if mute is activated Check to see if volume in OSM is set at minimum ...

Page 30: ...jority of electronics equipment to be recycled in a satisfactory way most of these potentially damaging substances sooner or later enter Nature There are also other characteristics of a computer such as energy consumption levels that are important from the viewpoints of both the work Internal and natural external environments Since all methods of conventional electricity generation have a negative...

Page 31: ...sual ergonomics and good usability Environmental Requirements Flame retardants Flame retardants are present in printed circuit boards cables wires casings and housings In turn they delay the spread of fire Up to thirty percent of the plastic in a computer casing can consist of flame retardant substances Most flame retardants contain bromine or chloride and these are related to another group of env...

Page 32: ...Cs freons CFCs freons are sometimes used for washing printed circuit boards CFCs break down ozone and thereby damage the ozone layer in the stratosphere causing increased reception on Earth of ultraviolet light with consequent increased risks of skin cancer malignant melanoma The relevant TCO 99 requirement Neither CFCs nor HCFCs may be used during the manufacturing and assembly of the product or ...

Page 33: ...e potentially damaging substances sooner or later enter Nature There are also other characteristics of a computer such as energy consumption levels that are important from the viewpoints of both the work Internal and natural external environments Since all methods of conventional electricity generation have a negative effect on the environment acidic and climate influencing emissions radioactive w...

Page 34: ...turskyddsforeningen The Swedish Society for Nature Conservation and NUTEK The National Board for Industrial and Technical Development in Sweden Environmental Requirements Brominated flame retardants Brominated flame retardants are present in printed circuit boards cables wires casings and housings In turn they delay the spread of fire Up to thirty percent of the plastic in a computer casing can co...

Page 35: ... except the back light system CFCs freons CFCs freons are sometimes used for washing printed circuit boards and in the manufacturing of expanded foam for packaging CFCs break down ozone and thereby damage the ozone layer in the stratosphere causing increased reception on Earth of ultraviolet light with consequent increased risks of skin cancer malignant melanoma The relevant TCO 95 requirement Nei...

Page 36: ...h January to September 1 to 9 October X November Y December Z Factory Code LITE ON Taiwan factory U LITE ON China factory G Control Code A A ver for U S A B B ver for Europe Asia and Pacific C C ver for China EX SERIAL NUMBER LABEL Model Name LCD1550ME LCD1550ME BK SERIAL NO Serial Number 5 digit sequential number at production month 00001 99999 ...

Page 37: ...rsize or undersize screwdriver is used screws may be damaged g Assembly is the opposite process of disassembly SYMBOL CODE DESCRIPTION CABINET COLOR 1 79PL1836 COVER CONNECTOR White 1 79PL1844 COVER CONNECTOR NMV NEC Black 2 79PL1825 COVER CABLE White 2 79PL1833 COVER CABLE LCD1550MBK B Black 3 SCREW M4 12 4 SCREW T3 12 2 1 3 4 ...

Page 38: ...MBOL CODE DESCRIPTION CABINET COLOR 5 79PL1897 REAR COVER ASS Y NMV NEC White 5 79PL2043 REAR COVER ASS Y NEC NEC Black SYMBOL CODE DESCRIPTION 6 BRACKET VESA ASS Y 7 79PL1915 RUBBER CUSHION REAR COVER 5 6 7 ...

Page 39: ...DE DESCRIPTION 8 SCREW M3 6 9 79PL1910 SHIELD ASS Y NEC FA150ATU SYMBOL CODE DESCRIPTION 11 79PL1912 INSULATOR NEC FA150ATUA B 12 79PL1913 INSULATOR NEC FA150ATUA P 13 79PL1911 INSULATOR NEC FA150ATUA P 11 12 13 9 8 ...

Page 40: ...ESCRIPTION 14 79PL2044 INTERFACE BD 15 79PL2047 POWER BD 16 79PL1982 INVERTER DC AC AMBIT T15I 8 SCREW M3 6 17 SCREW M4 8 18 SCREW M3 6 Flat 19 SPECIAL HEX 14 P306 P307 P301 P304 P003 8 19 16 CN2 CN3 CN1 17 18 8 15 P804 ...

Page 41: ...NE BD NEC FA15AA 22 SCREW M3 8 23 79PL1464 SPEAKER 4P N13AA12PCH22 J 24 SCREW M2 6 10 25 79PL1462 SW POWER HF606A1GGATA HUA SYMBOL CODE DESCRIPTION CABINET COLOR 26 SCREW M3 12 27 79PL2041 FRONT COVER ASS Y NMV NEC White 27 79PL2042 FRONT COVER ASS Y NEC NEC Black 20 21 23 24 22 25 27 26 ...

Page 42: ...3 6 SYMBOL CODE DESCRIPTION 28 SCREW M3 5 29 BRACKET CHASSIS BASE ASS Y 30 79PL2039 LCD 15 CLAA150XG01 CPT 31 79PL2036 HARNESS FFC 45P 0 5 95 1 32 79PL2037 HARNESS FFC 30P 0 5 115 31 32 30 29 28 28 ...

Page 43: ...0ATUA 35 79PL1835 STAND FRONT White 35 79PL1845 COVER STAND FRONT NMV NEC Black 36 SCREW M4 8 SPECAL SYMBOL CODE DESCRIPTION CABINET COLOR 37 79PL1898 STAND BASE NMV NEC FA15AA White 37 79PL2040 BASE ASS Y NEC NEC FA15AA Black 38 79PL1907 BRACKET HINGE NEC FA150AT 39 SCREW M4 16 DOUBLE WASHER 33 34 35 36 37 38 39 ...

Page 44: ...3 8 SYMBOL CODE DESCRIPTION 40 79PL1875 BRACKET STAND PLATE NEC 41 79PL1869 FOOT RUBBER 42 SCREW M3 10 40 42 41 ...

Page 45: ... 1 Key layout 4 2 2 2 2 Aging 4 2 2 2 3 Service mode 4 3 3 Set adjustments 4 4 3 1 Measuring instruments to be used 4 4 3 2 Power source voltage 4 4 3 3 Electrification 4 4 3 4 Input signals 4 4 3 5 POWER ON and signal input 4 4 3 6 Manual adjustments 4 5 3 6 1 Input video signal 4 5 3 6 2 VIDEO gain adjustments 4 6 3 6 3 Factory setting 4 7 ...

Page 46: ... Basic function 2 2 1 Key layout Exit Menu Close Sub menu exit Control Menu Open Cursor Move Item Select Adjust Menu Open Adjust select item Enter Sub menu Next Menu Open Tag Select Function execute Reset Open reset menu Sound Mute 2 2 2 Aging Prior to the adjustment of this model 30 minutes of aging shall be carried out The method of aging mode setting shall conform to the following 1 Turn the PO...

Page 47: ...ed below 1 Service mode 1 In the display mode menu press the and LEFT keys at the same time while pressing the RESET key 2 When the NEXT key is pressed under the condition that the WARNING screen is displayed the mode moves to the SERVICE mode At that time the LED is kept lit in green The OSM AUTO OFF function is disabled 3 When withdrawing from the SERVICE mode press the EXIT key in the highest h...

Page 48: ...s displayed If the screen is not displayed for more than 5 minutes after the electrification however this seems to have resulted from failure in the initialization of EEPROM Such a condition is regarded as NG Note 2 Connections for the connectors should be carried out always under the condition that the AC POWER cord plug has been pulled out 3 4 Input signals Refer to Paragraph 3 6 1 for each adju...

Page 49: ... 800 640 96 48 0 0 V INTERLACE TOTAL DISP SYNC PULSE BACK PORCH EQPfp EQPbp SERRATION EDP VDs VBf H H H H H H H H H H NON 800 768 3 28 0 0 OFF OFF 0 0 NON 525 480 2 33 0 0 OFF OFF 0 0 OUTPUT OUTPUT MODE NRZ RZ CV HS VS CS HD VD RGB HT C VIDEO Set up Sync ANALOG NRZ POS POS NEG NEG NEG POS POS POS 0 70 OFF 0 3 ANALOG NRZ NEG NEG NEG NEG NEG POS POS POS 0 70 OFF 0 3 Display setting Gray scale Extern...

Page 50: ...nu 4 Press the NEXT key once and advance to the tag 2 5 Adjust the display pattern to Gray Scale 0 to 100 in 16 gradations External Frame 6 Use the 4 RIGHT or 3 LEFT keys and adjust the cursor to AUTO OFFSET Make adjustments by pressing the PLUS or MINUS keys 7 When adjustments are over and the original screen has been recovered confirm that all the 16 gradations of black to white are displayed 8 ...

Page 51: ...agraph 2 2 3 and display the SERVICE menu 3 Press the NEXT key three times and advance to the tag 4 4 Use the 4 RIGHT or 3 LEFT keys and adjust the cursor to OSD DESIGN OSM SELECT and URL Set by pressing the PLUS or MINUS keys OSD DESIGN 0 OSM SELECT 0 URL 1 5 Press the EXIT key and withdraw from the SERVICE mode ...

Page 52: ... 1 5 2 Inspection on automatic adjustment function 5 14 1 5 3 Inspection on input signal identification 5 15 1 5 4 Inspection on Audio function 5 16 1 6 Setting before shipment 5 17 1 7 Safety test 5 17 1 7 1 Input current measurements 5 17 1 7 2 Power source earth connections 5 18 1 7 3 Dielectric strength test 5 18 1 7 4 Leakage current test 5 19 1 7 5 Insulation resistance test 5 19 2 External ...

Page 53: ...he VG 819 as specified below BNC DSUB female connector 2 For connections to the power supply an AC cable for LCD1550VM shall be used 1 2 4 Brightness setting Unless otherwise specified inspection shall be carried out under the condition that the LCD brightness is set at the highest level 1 2 5 Inspection mode Each inspection shall be carried out in the inspection mode specified in each relevant in...

Page 54: ...K SYNC ON RGB VIDEO SETUP CLKMODE CLKOUT DISP 1CH 2CH SW0 SW1 RGB R 7 0 G 7 0 B 7 0 DELAY CLOCK DELAY NRZ POSI NEGA NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ POSI NEGA NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ NEGA NEGA NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ NEGA POSI NEGA NEGA N...

Page 55: ...0 SW1 RGB R 7 0 G 7 0 B 7 0 DELAY CLOCK DELAY NRZ NEGA NEGA NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ NEGA NEGA NEGA NEGA NEGA NEGA G POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ NEGA NEGA NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ NEGA NEGA NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 1111111...

Page 56: ...CH SW0 SW1 RGB R 7 0 G 7 0 B 7 0 DELAY CLOCK DELAY NRZ POSI POSI NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ POSI POSI NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ POSI POSI NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ POSI POSI NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 1111...

Page 57: ... 2CH SW0 SW1 RGB R 7 0 G 7 0 B 7 0 DELAY CLOCK DELAY NRZ NEGA NEGA POSI POSI POSI POSI G POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ NEGA NEGA NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ NEGA NEGA NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ NEGA NEGA NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit ...

Page 58: ...OUT DISP 1CH 2CH SW0 SW1 RGB R 7 0 G 7 0 B 7 0 DELAY CLOCK DELAY NRZ POSI POSI NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ POSI POSI NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ POSI POSI NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ NEGA NEGA NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI ...

Page 59: ...T DISP 1CH 2CH SW0 SW1 RGB R 7 0 G 7 0 B 7 0 DELAY CLOCK DELAY NRZ POSI POSI NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ POSI POSI NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ POSI POSI POSI NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ POSI POSI POSI NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OF...

Page 60: ...CS HD VD CLOCK SYNC ON RGB VIDEO SETUP CLKMODE CLKOUT DISP 1CH 2CH SW0 SW1 RGB R 7 0 G 7 0 B 7 0 DELAY CLOCK DELAY NRZ POSI POSI POSI NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ POSI POSI POSI NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ POSI POSI NEGA NEGA NEGA NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec PAT SEL OPTI...

Page 61: ...0 0 Nonint OUTPUT NRZ RZ HS VS CS HD VD CLOCK SYNC ON RGB VIDEO SETUP CLKMODE CLKOUT DISP 1CH 2CH SW0 SW1 RGB R 7 0 G 7 0 B 7 0 DELAY CLOCK DELAY NRZ NEGA POSI NEGA NEGA POSI NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec NRZ NEGA NEGA NEGA NEGA POSI NEGA POSI 0 70V OFF 1 2 ALL POSI OFF 8 bit 11111111 ON 4 nsec PAT SEL CHARA CHARA CHRA PATTERN Format Code Font Cell 1 82 16 16 16 16 ...

Page 62: ...gnals and the setting of each inspection mode the analog outputs BNC of the signal generator shall be connected as specified below Except the cases when otherwise specified 1 SEPARATE R G B CONNECTION HS H VS V CS not connected Note 2 Screen of Option 2 ...

Page 63: ...nd Mute 1 3 2 Basic operational procedures 1 Press any key out of 3or4or or and confirm that a menu as shown below is displayed 2 When the NEXT key is used the selective tag moves to the right and the adjusting screen changes With the adjusting screen selected use the keys3and4to select the adjusting item simply item hereafter and set the adjusting value by the use of the keys and To execute an au...

Page 64: ... on LCD brightness and contrast 1 Enter Signal 17 through INPUT The screen display is made in all white 2 Display the BRIGHTNESS CONTRAST tag of the OSM menu 3 Get BRIGHTNESS highlighted with the3and4keys Brightness adjust menu 4 Confirm that the green bar is changed by the operation of the and keys and that the screen brightness is changed 5 Confirm that the highlight display is for BRIGHTNESS Pr...

Page 65: ...as to the POSITION tag Horizontal Position adjust menu Vertical Position adjust menu H SIZE adjust menu FINE adjust menu 3 Move the cursor to the HORIZONTAL POSITION using the3and4keys Operate the and keys to shift the POSITION to an extent so that the caused difference can be visually perceived 4 In the same manner shift the VERTICAL POSITION H SIZE and FINE from their initial levels 5 Use the NE...

Page 66: ...visually check whether the display is free from abnormality Freedom from any extreme displacement in position size and phase flickering in the screen and extreme color deterioration 3 Check the OSM menu for the signals that have signal numbers underlined Display the OSM information screen the rightmost tag Get the DISPLAY MODE highlighted with the 3 LEFT or 4 RIGHT keys Then display the DISPLAY MO...

Page 67: ...ith the PC or the audio player and it enters a sound 2 Enter Signal 17 through INPUT 3 Display the OSM menu Use the NEXT key to move as far as to the Volume tag Sound Volume menu 4 Confirm that the green bar is changed and the audio volume is also changed when the and keys are operated 5 It confirms that sound is outputted from the left right speakers and headphones ...

Page 68: ...r the withdrawal from the service mode 1 7 Safety test Destination All over the world Applicable standards UL1950 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 120 220 240V 50 60Hz 0 7 0 35A 1 7 1 Input current measurements Under the measuring conditions specified below an input curre...

Page 69: ... resistance of the power cord is excepted 1 7 3 Dielectric strength test To confirm the freedom from insulation breakdown testing shall be carried out under the conditions specified below 1 Measuring conditions Measuring instrument Dielectric strength tester The specified voltage shall be maintained in the state that a current of 10mA is carried Testing point Between the electrical circuit block a...

Page 70: ...necting a signal generator The see saw switch on the set side shall be turned ON and OFF 2 Judgment standard The leakage current measured shall be 1 5mA or less with an input of 240V AC 1 06 5 0V 60Hz 1 7 5 Insulation resistance test An insulation resistance shall be measured under the conditions specified below in order to confirm that the requirements of the judgment standard are met 1 Measuring...

Page 71: ...graph 1 2 8 herein 2 1 1 Inspection items 1 Examination of the missing of lines horizontal or vertical lines failing to be displayed 2 Presence of extreme missing of dots bright dots and black dots or conspicuous ones 3 Presence of extreme flaws wrinkles air bubble dents lint foreign matter and conspicuous abnormality on the display surface 2 1 2 Inspection standards Inspection standards for exter...

Page 72: ...rk dot N 4 Total dot N 4 Two adjacent dot Bright dot Dark dot 2 pairs 2 pairs Three or more adjacent dot No allowed Distance between defects Bright dot Dark dot 15mm 15mm Electrical defect Line defect No allowed 1 W Width L Length N Number 2 Definition of Adjacent R G B R G B R G B R G B R G B R G B R G B R G B R G B 3 Bright dot is defined as follows 1 3 area of sub pixel Dark dot is defined as f...

Page 73: ...connected as shown below P C R G B H V P rinter C able S ignal G enerator AU TO AD J I F JIG Part N o 599910401 120V For A ver Part N o 599910402 220V For B ver P R O G R AM P AR T N o 599910578 Program D isk D S ub 15pin S ignal C able 3 2 Input Signal Horizontal synchronization frequency 43kHz Negative Vertical synchronization frequency 42Hz Negative ...

Page 74: ...of serial number examine the serial number of the set enter it from the keyboard and press the Enter key The message of the screen Model Name LCD1550ME Input serial number Enter only Use previous number c Model name and serial number writing for the OSM MONITOR INFO According to the screen commands change over the signals and make OSM menu setting for the writing set Signal fH 43kHz Negative fV 42...

Page 75: ...01 C3 1E 00 20 41 00 20 30 10 60 40 13 00 30 E4 10 00 00 1E 00 00 00 FD 00 37 4B 1F 50 3C 08 00 0A 20 20 20 20 20 20 00 00 00 FC 00 4E 60 45 43 20 4C 43 44 31 35 35 30 4D 45 00 00 00 FF 70 00 3 3 3 3 3 3 3 3 3 3 3 3 3 00 4 Table 1 Data list Management number L1550ME Note 1 address 10h Week of manufacture Month of manufacture 4 Note 2 address 11h Year of manufacture 1990 Notes 3 address 71h 7Dh Ser...

Page 76: ... and play operation 6 10 7 Checking the interface circuit of sync signal 6 11 7 1 Checking the control circuit of horizontal sync pulse 6 11 7 2 Checking the control circuit of vertical sync pulse 6 11 8 Checking the resolution change IC movement 6 12 9 No power on 6 13 9 1 No power on 1 6 13 9 2 No power on 2 6 14 10 Checking the DC DC converter circuit 6 15 11 Checking the operation of CPU 6 16 ...

Page 77: ...th NO VIDEOINPUT It is indicated with OUT OF RANGE at the time of the frequency that it can t be distinguished YES NO Pressed No OSM display section Check if the sync signal from Computer is output and if the video cable is connected normally OK NG Input the sync signal of computer or change the cable Proceed Checking the resolution change IC movement section ...

Page 78: ...ck OSM menu is displayed on screen when you push the NEXT key OK NG Proceed Abnormal screen section Refer Checking the backlight unit section Check the video cable for failure Check the host for output signal with all black only 1 Change pattern of video signal output on the host 2 Reconnect the video cable 3 Change the video cable Next page ...

Page 79: ...dition that a LCD module is connected to P307 pin 44 OK NG Failure point 1 I306 failure 2 Printed wire broke between I306 and P307 pin 44 Check the H sync pulse of negative polarity is output on P307 pin 38 at TTL level OK NG Failure point 1 I306 failure 2 Printed wire broke between I306 and P307 pin 38 Check the V sync of negative polarity are output on P307 pin 40 OK NG Failure point 1 I306 fail...

Page 80: ...06 failure 2 Printed wire broke between I306 and P307 pin 37 Check the data signal output on P306 and P307 R G B data pin OK NG Failure point 1 I306 failure 2 Printed wire broke between I306 and P306 data line Failure point 1 The cable broke between P306 P307 and LCD module 2 LCD module failure OK NG ...

Page 81: ...G Is a H level being output in the TTL level from I302 pin 2 Or is INV_EN signal of the rectangle being output NG Failure point Printed wire broke between I302 pin 2 and I309 pin 5 Check the PWM signal of the input from I302 pin 1 is a BRI signal OK NG Failure point 1 Printed wire broke between I302 pin 1 and I309 pin 3 2 I309 failure Failure point 1 Inverter cable disconnection 2 Inverter of LCD ...

Page 82: ... the case of the Red signal A Green and Blue signal is the same path too 1 Printed wire broke between D Sub R and I306 pin 95 2 R346 short 3 C348 open 4 R345 open Is the pulse of the TTL level being output to P306 P307 from the data line of I306 OK NG Failure point 1 Printed wire broke between I306 data line and P306 P307 2 I317 failure Check the negative horizontal sync pulse output to P307 pin 3...

Page 83: ...ive DE pulse output to P307 pin 42 from I306 pin 43 at TTL level OK NG Failure point 1 Printed wire broke between I306 pin 42 and P307 pin 42 2 R352 open 3 C385 short Check the SHFCLK OUTPUT to P307 pin 44 from I306 pin 44 at TTL level OK NG Failure point 1 Printed wire broke between I306 pin 44 and P307 pin 39 2 FB312 open 3 FB311 open 4 C354 short 5 C355 short Process Checking the resolution cha...

Page 84: ...pin 17 2 Printed wire broke between I306 pin 102 and I302 pin 21 3 Printed wire broke between I306 pin 104 and I302 pin 20 4 Printed wire broke between I306 pin 105 and I302 pin 18 5 Printed wire broke between I306 pin 103 and I302 pin 22 6 Printed wire broke between I306 pin 98 and I302 pin 23 Process Checking the resolution change IC movement section ...

Page 85: ...ions for DDC 2 Between I308 pin 6 and P302 pin 14 may have failed 3 R337 open 4 Cable failure OK NG Confirm the input of serial data on I308 pin 5 SDA at TTL level Failure point 1 The host machine isn t communicating in DDC2 mode 2 The video cable may have failed or may not to have connections for DDC 3 Between I308 pin 6 and P302 pin 13 may have failed 4 R338 open 5 Cable failure Failure point I3...

Page 86: ... level Process Checking the resolution change IC movement section Failure point 1 Video cable may have failed 2 Printed wire broke between P302 pin 13 and I306 pin 150 3 FB302 R332 open OK NG Check the vertical sync signal on I306 pin 148 TTL level Process Checking the resolution change IC movement section Failure point 1 Video cable may have failed 2 Printed wire broke between P302 pin 14 and I30...

Page 87: ...level OK NG Is 20MHz clock output from X301 at TTL level OK NG Failure point Print wire broke between X301 and I306 pin 141 Failure point X301 failure Is 5 0V supplied to I306 pin 100 at High level OK NG Check the output of 5 0V H pulse from I301 pin 6 OK NG Is 5 0V supplied to I301 pin 7 Failure point Print wire broke between I301 pin 6 and I306 pin 100 OK NG Failure point 1 FB318 failure 2 Power...

Page 88: ... over 10V or not OK NG Check R805 R803 ZD802 Q801 I801 and repair them Check pin 6 of I801 have same pulse or not OK NG Check peripheral components of I801 and repair them e g Q805 Q806 Check pin 3 of T802 have same pulse or not OK NG Check Q803 R813 R814 D806 R812 and repair them Check peck voltage of R811 triangle pulse is up to 1 volt or not OK NG Check D804 R807 and repair them Check D809 D810...

Page 89: ... power is supplied from power source OK NG Failure point Power source failure Is LED turned on in amber momentarily when a power button is pushed OK NG Failure point Power source failure Process Checking the operation of CPU section ...

Page 90: ...3V line voltage from I310 pin 2 OK NG Is the output FB320 being inputted to I315 pin 3 OK NG Failure point Printed wire broke between I310 pin 3 and output of FB321 Failure point I310 failure Failure point Printed wire broke between I310 pin 2 and I306 power supply pin ...

Page 91: ...oke between output of FB319 and I302 power supply pin Is 20MHz clock input to I302 pin 11 and 12 at TTL level OK NG Failure point X301 failure Check the input of 5V H pulse from I303 pin 4 are same as I302 pin 7 14 msec Typ OK NG Failure point Printed wire broke between I303 pin 4 and I302 pin 7 I302 failure ...

Page 92: ...utted to I001 pin 4 9 Failure point 1 Printed wire broke between JK011 pin 2 3 and I001 pin 4 9 2 R040 R041 open 3 R042 R043 short 4 C040 C041 open Is output waveform being outputted in I001 pin 14 17 Is 15V supplied to I001 pin 15 16 Proceed section 9 1 No power on 1 OK OK OK OK OK OK NG NG NG NG NG NG Failure point 1 Speaker cable disconnection 2 Speaker failure Is mute STD BY low level at pin 1...

Page 93: ...of these components was short to GND Check CN2 and CN3 is connected right OK NG Check CCFL and repair them Check the IC pin 3 is PWM OK NG Check the IC pin 11 is triangle OK NG Check the Q4 Q10 R5 D5 L1 and repair them Check D2 C14 R11and repair them Check the IC pin 9 is 2 5V NG Check R20 and R28 and repair them NG Check the IC pin 8 feedback waveform Check CR1 CR2 and repair them NG Repair the L...

Page 94: ...ormer and repair them Check the one of these components was short to GND Check the H V and balance circuit OK NG Check the C3 C7 C12 C20 L3 and repair them Check the Feedback and protection circuit Check the Q19 Q7 Q11 D3 Q14 and repair them Check one of these components was short to GND Continue ...

Page 95: ...em reset LED control circuit 7 4 6 1 System reset 7 4 6 2 LED control circuit 7 4 7 E2 PROM for PnP 7 4 8 E2 PROM 7 4 9 CPU circuit 7 4 9 1 Detection of POWER switch status 7 4 9 2 Display mode identification 7 4 9 3 User Control 7 6 9 4 Control of definition converter MCU I306 7 6 9 5 I2 C bus control 7 7 9 6 Power ON sequence 7 7 9 7 Power OFF sequence 7 8 10 Inverter 7 9 10 1 Circuit Diagram 7 ...

Page 96: ...put The square wave from T802 is rectified by D809 D810 then filtered by C817 C822 to generate 12V and 5V respectively 4 1 A 5V power supply for LCD module CPU and logic is generated from the power source 4 2 I310 3 terminal regulator A 3 3V power supply for I306 analog is generated from the 5V source 4 3 I310 3 terminal regulator A 3 3V power supply for I306 digital is generated from the 5V sourc...

Page 97: ...ion of I801 is stop shutting Q803 off completely LCD 1550ME Power Board Block Diagram Line Filter Rec Filter Power Transformer Output Rec Filter PWM Driver FB 3 On screen circuit Circuit diagrams Main PWB I306 gmZAN1 Embeded function On screen menu screen is established and the resultant data are output from I306 Circuit diagram MAIN PWB gmZAN1 4 Video input circuit Circuit diagram MAIN PWB The AC...

Page 98: ...r supply is turned off For example if the power supply is turned off with the POWER switch the POWER switch must be turned on when activating the power supply again If the power supply is turned off by pulling out the power cord then this power supply can be turned on by connecting the power cord without pressing the POWER switch 9 2 Display mode identification 9 2 1 Functions 1 Display mode ident...

Page 99: ...ty Mode No Resolution H freq KHz Band Width MHz H V 1 247 VGA 720 x 350 70Hz 31 47 28 322 2 102 VGA 720 x 400 70Hz 31 47 28 322 3 103 VGA 640 x 480 60Hz 31 47 25 175 4 182 MAC 640 x 480 66Hz 35 30 24 5 173 VESA 640 x 480 72Hz 37 86 31 5 6 109 VESA 640 x 480 75Hz 37 5 31 5 7 104 VESA 800 x 600 56Hz 35 16 36 8 116 VESA 800 x 600 60Hz 37 88 40 9 110 VESA 800 x 600 75Hz 46 88 49 5 10 117 VESA 800 x 60...

Page 100: ... DOWN switch input key MFB4 109 1 UP switch input key MFB11 123 1 LEFT 3 switch input 3 key MFB3 110 1 RIGHT 4 switch input 4 key MFB2 111 1 NEXT NEXT switch input 9 3 2 Functions Control is effected for the push switches to be used when the user changes the parameters in order to modify the respective setting values Whether the switch has been pressed is identified with the switch input level tha...

Page 101: ... of I306 Post Pin No I O Signal name Function P3 5 14 O IICCLK IIC bus clock P3 4 13 I O IICDATA IIC bus data 9 6 Power ON sequence When the POWER switch is pressed the POWER OFF signal is turned H When this H potential is detected the CPU begins to establish the respective power supplies according to the sequence shown below POWER PPWR DOTCLK INV_EN LED DATA 140ms or more 100ms or more 430ms or m...

Page 102: ...wer supply is ON the POWER ON signal is turned H When shown below His H potential is detected the CPU begins to turn off the respective power supplies according to the sequence POWER PPWR DOTCLK INV_EN LED DATA 660ms or more 340ms More than 40ms 330ms or more 340ms or more ...

Page 103: ...is an input signal to turn on or off the AC output voltage of the Inverter ON states On Off pin 2 5V OFF state On Off pin 2 0V 2 IC LM393 It will get input signal from customer system and control the lamps current and brightness The other function include burst mode control PWM control and soft start Buck circuit Input Power ON OFF circuit IC Royer circuit Protection circuit Feedback circuit HV ci...

Page 104: ...vg 10V Vin 15V U D 10 15 100 66 66 4 Royer circuit 100uH L1 R15 R16 Q5 Q6 C13 0 22u T1 C13 waveform 2 3 4 5 6 1 10 7 This is a standard Royer structure It transfer the DC input signal to a AC output single The resistors R15 R16 are supply the base current for Q5 Q6 The C13 and transformer decide the oscillation frequency working frequency EX If the primary voltage is 15Vrms and the transformer tur...

Page 105: ...release the control signal to PWM 7 Protection circuit The protection circuit is sense the output current and abnormal signal to protect the inverter a For output current The protect circuit will be monitor the lamps current If the lamps current is correct it will be allow the inverter to operating continually In other ward if the lamps current is abnormal it will be shutdown the inverter b For ot...

Page 106: ... NPN SST2222A 800MA 50V Q303 79PL1435 FET P CHNL SI2305DS VISHA Q304 79PL1036 TR NPN SST3904 SMD Q305 79PL1037 TR PNP 2SA1037AK T146 R Q306 79PL1036 TR NPN SST3904 SMD Q307 79PL1036 TR NPN SST3904 SMD Q308 79PL1436 FET N P CHNL 2SK3018 ROHM Q309 79PL1436 FET N P CHNL 2SK3018 ROHM Q310 79PL1037 TR PNP 2SA1037AK T146 R Q311 79PL1036 TR NPN SST3904 SMD Q312 79PL1436 FET N P CHNL 2SK3018 ROHM Q313 79P...

Page 107: ...S P805A 79PL1462 SW POWER HF606A1GGATA HUA S601 79PL1975 SWITCH TACT TSAB 3 260GF S602 79PL1975 SWITCH TACT TSAB 3 260GF S603 79PL1975 SWITCH TACT TSAB 3 260GF S604 79PL1975 SWITCH TACT TSAB 3 260GF S605 79PL1975 SWITCH TACT TSAB 3 260GF S606 79PL1975 SWITCH TACT TSAB 3 260GF S607 79PL1975 SWITCH TACT TSAB 3 260GF S608 79PL1975 SWITCH TACT TSAB 3 260GF PWB ASSYS FUKEYB 79PL1819 FUNCTION KEY BD NEC...

Page 108: ...0QST FB330 79PL1953 CORE BEAD SBK160808T 300Y FB331 79PL1953 CORE BEAD SBK160808T 300Y FB332 79PL1953 CORE BEAD SBK160808T 300Y L001 79PL0993 COIL CHOKE 45UH K L301 79PL0991 COIL CHOKE 3UH K L302 79PL0991 COIL CHOKE 3UH K L802 79PL2056 COIL CHOKE UH 33 K DRWW1 T801 79PL1377 LINE FILTER TLF 1030 MH 1 ELECTRICAL PARTS MISCELLANEOUS PARTS AUDA 79PL1452 AUDIO CABLE UL2547 26X2C F801 79PL1461 FUSE TIME...

Page 109: ...2 79PL0064 CF OHM 270 1 4W J T26 R003 79PL1297 CHIP R KOHM 100 1 10W J R004 79PL1972 RES CHIP R KOHM 300 1 10 R040 79PL1386 R CHIP R KOHM 1 1 10W F R041 79PL1386 R CHIP R KOHM 1 1 10W F R042 79PL1398 R CHIP R KOHM 47 1 10W F R043 79PL1398 R CHIP R KOHM 47 1 10W F R045 79PL1296 CHIP R KOHM 10 1 10W J 06 R046 79PL1294 CHIP R OHM 0 1 10W J 0603 R047 79PL1302 CHIP R KOHM 4 7 1 10W J R053 79PL1973 RES ...

Page 110: ... 10W J R339 79PL1298 CHIP R OHM 150 1 10W J R340 79PL1305 CHIP R OHM 75 1 10W J R341 79PL1298 CHIP R OHM 150 1 10W J R342 79PL1298 CHIP R OHM 150 1 10W J R343 79PL1305 CHIP R OHM 75 1 10W J R344 79PL1298 CHIP R OHM 150 1 10W J R345 79PL1298 CHIP R OHM 150 1 10W J R346 79PL1305 CHIP R OHM 75 1 10W J R347 79PL1298 CHIP R OHM 150 1 10W J R348 79PL1941 CHIP R KOHM 3 3 1 10W J 6 R349 79PL1941 CHIP R KO...

Page 111: ...J T26 R833 79PL2061 RES MOF KOHM 1 2 1W J HO RN301 79PL1011 FRN 10KH 1 16W J 8P4R RN302 79PL1011 FRN 10KH 1 16W J 8P4R RN303 79PL1013 FRN 4 7KH 1 16W J 8P4R RN304 79PL1013 FRN 4 7KH 1 16W J 8P4R RN305 79PL1307 FRN OHM 47 1 16W J 8P4R RN306 79PL1307 FRN OHM 47 1 16W J 8P4R RN307 79PL1307 FRN OHM 47 1 16W J 8P4R RN308 79PL1307 FRN OHM 47 1 16W J 8P4R RN309 79PL1307 FRN OHM 47 1 16W J 8P4R RN310 79PL...

Page 112: ...V SMD C321 79PL1319 MC 0 01UF 50V X7R M SMD C322 79PL1319 MC 0 01UF 50V X7R M SMD C323 79PL1319 MC 0 01UF 50V X7R M SMD C324 79PL1319 MC 0 01UF 50V X7R M SMD C325 79PL1319 MC 0 01UF 50V X7R M SMD C326 79PL1319 MC 0 01UF 50V X7R M SMD C327 79PL1319 MC 0 01UF 50V X7R M SMD C328 79PL1319 MC 0 01UF 50V X7R M SMD C329 79PL1141 MC PF 100 50V NPO J SMD 0 C334 79PL1141 MC PF 100 50V NPO J SMD 0 C335 79PL1...

Page 113: ...974 CAP ALU UF 220 10V NF 10 C425 79PL1418 C MC UF 0 1 25V Z Y5V SMD C426 79PL1974 CAP ALU UF 220 10V NF 10 C427 79PL1418 C MC UF 0 1 25V Z Y5V SMD C428 79PL1319 MC 0 01UF 50V X7R M SMD C429 79PL1418 C MC UF 0 1 25V Z Y5V SMD C430 79PL1418 C MC UF 0 1 25V Z Y5V SMD C431 79PL1418 C MC UF 0 1 25V Z Y5V SMD C432 79PL1418 C MC UF 0 1 25V Z Y5V SMD C433 79PL1418 C MC UF 0 1 25V Z Y5V SMD C434 79PL1418 ...

Page 114: ...6 MEM UF 0 1 50V J T C816 79PL2064 CAP CD PF 1000 100V K T C817 79PL2065 ALUMINATOR UF 680 25V T 1 C818 79PL2065 ALUMINATOR UF 680 25V T 1 C820 79PL0252 CD UF 0 1 50V Z Y5V T C821 79PL2066 CAP CD PF 1000 100V K T C822 79PL2067 CAP ALU UF 470 25V T 105 C824 79PL0483 ALU UF 1000 16V T 105C C826 79PL0252 CD UF 0 1 50V Z Y5V T C827 79PL0526 MEM UF 0 1 50V J T C828 79PL2052 CAP CD PF 1000 250V M F C831...

Page 115: ...R NPN SST2222A 800MA 50V Q303 79PL1435 FET P CHNL SI2305DS VISHA Q304 79PL1036 TR NPN SST3904 SMD Q305 79PL1037 TR PNP 2SA1037AK T146 R Q306 79PL1036 TR NPN SST3904 SMD Q307 79PL1036 TR NPN SST3904 SMD Q308 79PL1436 FET N P CHNL 2SK3018 ROHM Q309 79PL1436 FET N P CHNL 2SK3018 ROHM Q310 79PL1037 TR PNP 2SA1037AK T146 R Q311 79PL1036 TR NPN SST3904 SMD Q312 79PL1436 FET N P CHNL 2SK3018 ROHM Q313 79...

Page 116: ...S P805A 79PL1462 SW POWER HF606A1GGATA HUA S601 79PL1975 SWITCH TACT TSAB 3 260GF S602 79PL1975 SWITCH TACT TSAB 3 260GF S603 79PL1975 SWITCH TACT TSAB 3 260GF S604 79PL1975 SWITCH TACT TSAB 3 260GF S605 79PL1975 SWITCH TACT TSAB 3 260GF S606 79PL1975 SWITCH TACT TSAB 3 260GF S607 79PL1975 SWITCH TACT TSAB 3 260GF S608 79PL1975 SWITCH TACT TSAB 3 260GF PWB ASSYS FUKEYB 79PL1819 FUNCTION KEY BD NEC...

Page 117: ...79PL1953 CORE BEAD SBK160808T 300Y FB331 79PL1953 CORE BEAD SBK160808T 300Y FB332 79PL1953 CORE BEAD SBK160808T 300Y L001 79PL0993 COIL CHOKE 45UH K L301 79PL0991 COIL CHOKE 3UH K L302 79PL0991 COIL CHOKE 3UH K L802 79PL2056 COIL CHOKE UH 33 K DRWW1 T801 79PL1377 LINE FILTER TLF 1030 MH 1 ELECTRICAL PARTS MISCELLANEOUS PARTS AUDA 79PL1452 AUDIO CABLE UL2547 26X2C F801 79PL1461 FUSE TIME LAG 3 15A ...

Page 118: ...2 79PL0064 CF OHM 270 1 4W J T26 R003 79PL1297 CHIP R KOHM 100 1 10W J R004 79PL1972 RES CHIP R KOHM 300 1 10 R040 79PL1386 R CHIP R KOHM 1 1 10W F R041 79PL1386 R CHIP R KOHM 1 1 10W F R042 79PL1398 R CHIP R KOHM 47 1 10W F R043 79PL1398 R CHIP R KOHM 47 1 10W F R045 79PL1296 CHIP R KOHM 10 1 10W J 06 R046 79PL1294 CHIP R OHM 0 1 10W J 0603 R047 79PL1302 CHIP R KOHM 4 7 1 10W J R053 79PL1973 RES ...

Page 119: ... 10W J R339 79PL1298 CHIP R OHM 150 1 10W J R340 79PL1305 CHIP R OHM 75 1 10W J R341 79PL1298 CHIP R OHM 150 1 10W J R342 79PL1298 CHIP R OHM 150 1 10W J R343 79PL1305 CHIP R OHM 75 1 10W J R344 79PL1298 CHIP R OHM 150 1 10W J R345 79PL1298 CHIP R OHM 150 1 10W J R346 79PL1305 CHIP R OHM 75 1 10W J R347 79PL1298 CHIP R OHM 150 1 10W J R348 79PL1941 CHIP R KOHM 3 3 1 10W J 6 R349 79PL1941 CHIP R KO...

Page 120: ... T26 R833 79PL2061 RES MOF KOHM 1 2 1W J HO RN301 79PL1011 FRN 10KH 1 16W J 8P4R RN302 79PL1011 FRN 10KH 1 16W J 8P4R RN303 79PL1013 FRN 4 7KH 1 16W J 8P4R RN304 79PL1013 FRN 4 7KH 1 16W J 8P4R RN305 79PL1307 FRN OHM 47 1 16W J 8P4R RN306 79PL1307 FRN OHM 47 1 16W J 8P4R RN307 79PL1307 FRN OHM 47 1 16W J 8P4R RN308 79PL1307 FRN OHM 47 1 16W J 8P4R RN309 79PL1307 FRN OHM 47 1 16W J 8P4R RN310 79PL1...

Page 121: ...V SMD C321 79PL1319 MC 0 01UF 50V X7R M SMD C322 79PL1319 MC 0 01UF 50V X7R M SMD C323 79PL1319 MC 0 01UF 50V X7R M SMD C324 79PL1319 MC 0 01UF 50V X7R M SMD C325 79PL1319 MC 0 01UF 50V X7R M SMD C326 79PL1319 MC 0 01UF 50V X7R M SMD C327 79PL1319 MC 0 01UF 50V X7R M SMD C328 79PL1319 MC 0 01UF 50V X7R M SMD C329 79PL1141 MC PF 100 50V NPO J SMD 0 C334 79PL1141 MC PF 100 50V NPO J SMD 0 C335 79PL1...

Page 122: ...974 CAP ALU UF 220 10V NF 10 C425 79PL1418 C MC UF 0 1 25V Z Y5V SMD C426 79PL1974 CAP ALU UF 220 10V NF 10 C427 79PL1418 C MC UF 0 1 25V Z Y5V SMD C428 79PL1319 MC 0 01UF 50V X7R M SMD C429 79PL1418 C MC UF 0 1 25V Z Y5V SMD C430 79PL1418 C MC UF 0 1 25V Z Y5V SMD C431 79PL1418 C MC UF 0 1 25V Z Y5V SMD C432 79PL1418 C MC UF 0 1 25V Z Y5V SMD C433 79PL1418 C MC UF 0 1 25V Z Y5V SMD C434 79PL1418 ...

Page 123: ... MEM UF 0 1 50V J T C816 79PL2064 CAP CD PF 1000 100V K T C817 79PL2065 ALUMINATOR UF 680 25V T 1 C818 79PL2065 ALUMINATOR UF 680 25V T 1 C820 79PL0252 CD UF 0 1 50V Z Y5V T C821 79PL2066 CAP CD PF 1000 100V K T C822 79PL2067 CAP ALU UF 470 25V T 105 C824 79PL0483 ALU UF 1000 16V T 105C C826 79PL0252 CD UF 0 1 50V Z Y5V T C827 79PL0526 MEM UF 0 1 50V J T C828 79PL2052 CAP CD PF 1000 250V M F C831 ...

Page 124: ...OWER CIRCUIT DC 3 3V DC 5V DC15V P306 P307 PANEL DATA OUTPUT RC FILTER SCALER RLC CLOCK FILTER X301 CLK Function Control ISP RS232 P304 P303 POWER BOARD AC IN P801 P802 P803 PANEL INVERTER P003 SPK OUT FUNCTION KEY PAD EXTERNAL ISP RS232 BOARD SPEAKER EEPROM I304 I301 RESET I001 AUDIO JK011 AUDIO IN BLOCK DIAGRAM LCD1550ME 9 1 ...

Page 125: ...14 NC R323 10K C321 10nF 10K R326 C323 10nF RN302 10KX4 1 8 2 7 3 6 4 5 R322 4K7 C325 10nF C459 NC R315 100 I303 NC7SZ04 2 4 5 3 C317 4 7uF 25V R316 100 C305 0 1uF C316 4 7uF 25V R301 4K7 R321 4K7 I302 MTV312M64 2 3 4 5 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 22 24 25 26 27 28 29 30 31 32 33 35 36 37 38 39 40 41 42 43 44 1 12 23 34 DA1 P5 1 DA0 P5 0 VDD3 NC NC RST VDD P6 3 AD3 VSS XTAL2 ISDA P3 4...

Page 126: ...138 143 144 145 146 141 142 148 150 DVDD DAC_DGNDA DAC_DVDDA PLL_DVDDA RESERVED PLL_DGNDA SUB_DGNDA SUB_SGNDA PLL_SGNDA PLL_SVDDA RESERVED RESERVED RESERVED STI_TM1 STI_TM2 SCAN_IN1 RESERVED SCAN_IN2 SVDD DAC_SVDDA DAC_SGNDA PLL_RVDDA PLL_RGNDA RESERVED SUB_RGNDA TCLK XTAL VSYNC HSYNC CSYNC FB304 WB201209F050QST 1 2 R340 75 P302 VGA DB15 DIP TYPE 8 15 7 14 6 13 5 12 4 11 3 10 2 9 1 FB302 WB201209B...

Page 127: ...308 47X4 1 8 2 7 3 6 4 5 I306D gmZAN1 44 45 71 70 69 68 67 66 64 63 62 57 56 55 54 53 52 51 50 48 47 46 42 39 38 37 36 35 34 32 31 29 28 27 26 25 24 23 22 20 19 17 16 15 14 13 10 9 7 6 2 3 4 5 159 160 74 73 43 59 60 76 75 11 21 58 97 108 149 12 33 40 65 1 8 18 30 41 49 61 72 114 126 140 151 158 PCLKA PCLKB PD0 PD1 PD2 PD3 PD4 PD5 PD6 PD7 PD8 PD9 PD10 PD11 PD12 PD13 PD14 PD15 PD16 PD17 PD18 PD19 PD...

Page 128: ...1 C432 0 1uF C428 10nF C433 0 1uF FB323 WB201209B300QST C434 0 1uF C412 220uF 10V GND10 1 Q305 2SA1037AK C413 10nF I310 AIC1084 33CM TO263 3 2 1 IN OUT C FB319 WB201209B300QST R359 47K C449 0 1uF FB315 C418 680uF 25V C435 220uF 10V C415 0 1uF R360 47K C457 0 1uF C448 0 1uF C436 0 1uF C442 0 1uF C437 0 1uF C421 470uF 16V C438 0 1uF C439 0 1uF C444 0 1uF C430 0 1uF C419 10nF FB327 WB201209B401QNT GN...

Page 129: ...6 5 17 12 11 14 2 3 13 18 19 20 7 15 16 G1 INR INL SVR VOL VAO_L OUTL MUTE STBY OUTR G2 G3 G4 G5 G6 G7 VAO_R Vs Vs C040 4 7uF 50V C042 680uF 25V 105C Jk011 PHONEJACK L001 45uH R055 10K R041 1K R056 10K Q310 2SA1037 R043 47K R040 1K Q311 SST3904 C003 470uF 25V 105C P003 1 2 3 4 C015 100nF R003 100K R044 NC C009 100nF C041 4 7uF 50V C004 100nF C007 100nF C002 100nF C043 680uF 25V 105C SCHEMATIC DIAG...

Page 130: ...SCHEMATIC DIAGRAM POWER PWB 1 1 10 6 ...

Page 131: ...30 9K R201 75K R202 66 5K R204 4 87K R203 22 1K 1 2 C10 104K 1 2 D8 LS4148 R205 66 5K R207 100K R206 54 9K R208 5 1K Bri 1 2 C11 103Z 1 2 C14 105K 0805 5VDC R209 NC Bri Vcc 1 2 R211 R NC 1 2 L3 450mH 3 2 1 CR1 BAV99 1 2 3 Q19 3904 SOT 23 1 2 R33 10K 0603 1 2 R45 200K 0603 BURST 1 2 C25 105Z 0603 OLSD 1 2 R32 510 0603 1 2 C18 NC 0603 1 2 3 Q7 3904 SOT 23 OLSD 1 2 R3 100 1206 N42 N43 N44 N47 N48 N55...

Search results

Summary of Contents for MultiSync LCD1550ME

Reviews:

Related manuals for MultiSync LCD1550ME

Brands by name

Popular brands

NEC MultiSync LCD1550ME, Service Manual

Search results

Summary of Contents for MultiSync LCD1550ME

Reviews:

Related manuals for MultiSync LCD1550ME

Brands by name

Popular brands