NEC NEC MultiSync LCD1550V LCD1550V LCD1550V Service Manual Download Page 57

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6-3

2. Nothing displays on screen (Screen is black, color of LED is green)

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.

Check OSM menu is displayed on screen
when you push the “NEXT, Adjust or
Control” key.

Check if the LCD video signal cable is connected
between the MAIN board and LCD module.

Failure point

The cable is disconnected.

Proceed section 4
“Abnormal screen“.

Check the video cable for failure.
Check the host for output signal with all black only.

Summary of Contents for NEC MultiSync LCD1550V LCD1550V LCD1550V

Page 1: ...ured by Hannstar from the original model Use the applicable service manual which surely confirms the model number of the NAME PLATE INSTRUCTION Refer to the page which the point of view of the model number is mentioned in Model number LA 15R02 LA 15R02 BK Maintenance is performed by the original service manual Part No 599910571 Model number LA 15R02 1 LA 15R02 1 BK Maintenance is performed using t...

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: ...model number NAME PLATE INSTRUCTION White model NAME PLATE INSTRUCTION Black model Model number Original model LA 15R02 Hannstar LCD model LA 15R02 1 Model number Original model LA 15R02 BK Hannstar LCD model LA 15R02 1 BK ...

Page 4: ...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 5: ...tiSync LCD1550V User s Manual UÏivatelská pﬁíruãka Bedienerhandbuch Οδηγίες Χρήσης Manual del usuario Manuel Utilisateur Manuale utente Gebruikershandleiding Podr cznik u ytkownika Руководство пользователя Kullan c Klavuzu ...

Page 6: ... LA 15R02 BK MultiSync LCD1550V LA 15R02 1 MultiSync LCD1550V LA 15R02 1 BK 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: ...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 8: ...omics 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 environmental...

Page 9: ...ons 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 its pa...

Page 10: ...otentially 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 wast...

Page 11: ...ddsforeningen 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 consist ...

Page 12: ...e 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 Neither CFCs ...

Page 13: ...1 9 English âesky Deutsch Ελληνικά Español Français Italiano Nederlands Polski Русский Türkçe ...

Page 14: ...ource 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 LCD1550V with a 220 240V AC power source in Australia use the power cord provided with the monitor For all ot...

Page 15: ...nc LCD1550V monitor with tilt base Power Cord s Video Signal 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 1550V ...

Page 16: ...under Clip B 5 Connect one end of the power cord to the MultiSync LCD Series monitor and the other end to the power outlet Place the video signal cable and AC power cord under the clips Figure C 1 Replace connector cover and cable cover NOTE Adjust the position of the cable under the clips to avoid damage for cable or monitor NOTE Please refer to Caution section of this manual for proper selection...

Page 17: ...anual 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 B 1 Macintosh Cable Adapter not included Macintosh G3 and G4 do not need a Macintosh cable adapter Figure A 1 ...

Page 18: ...1 Remove Monitor Stand for Mounting To prepare the monitor for alternate mounting purposes 1 Remove the connector cover and cable cover Figure R 1 2 Disconnect all cables 3 Place monitor face down on a non abrasive surface Figure R 2 Vacation Switch Power Button Figure C 1 1550V Figure D 1 Connector cover Cable cover Clip B ...

Page 19: ...he 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 and signal cable to the back of the monitor Figure R 3 6 Reverse this process to reattach stand NOTE Use only VESA compatible alternative mounting method ...

Page 20: ...ached screws 4pcs when mounting To meet the safety requirements the 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 Figure R 2 Figure R 3 Non abrasive surface ...

Page 21: ...1 17 English 8 4 SCREWS M4 MAX depth 8 5 mm If use other screw check depth of hole Weight of LCD assembly 3 2kg MAX Replace screws Tighten all screws 75 mm 75 mm Thickness of bracket arm 2 0 3 2 mm ...

Page 22: ...select one of the controls Moves the bar left right to increase or decrease 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 Controls OSM On Screen Manager Controls The OSM controls on the front of the monitor function as follows To access OSM press any ...

Page 23: ...e 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 Blue colour depending upon which is selected The change in colour will appear on screen and the direction increase or decrease will be shown by the bars Tools OSM POSITION You can c...

Page 24: ...nd 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 is not at 1024 x 768 FACTORY PRESET Selecting Factory Preset allows you to reset all OSM control settings back to the factory settings Th...

Page 25: ...rned 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 signal doesn t have proper timing the...

Page 26: ...table 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 s...

Page 27: ...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 the...

Page 28: ...nomics 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 29: ...1 25 Printed in Taiwan HD67NM55101 ...

Page 30: ...nuary to September 1 to 9 October X November Y December Z Panel Code A Z Hannstar panel Reference 0 9 LG panel Factory Code Compal Taiwan factory I Compal China factory T Control Code A B EX SERIAL NUMBER LABEL Model Name LCD1550V 1 LCD1550V 1 BK SERIAL NO Serial Number 4 digit sequential number at production month 0001 9999 White model Black model ...

Page 31: ...sed screws may be damaged g Assembly is the opposite process of disassembly SYMBOL CODE Compal CODE NMV DESCRIPTION CABINET COLOR 1 FANM5522100 79PP0619 CONNECTOR COVER NM5522 AB White 1 FANM5522200 79PP0694 CONNECTOR COVER NM5522 AB Black 2 FANM5524100 79PP0589 CABLE COVER White 2 FANM5524200 79PP0607 CABLE COVER ASSY BK A Black 3 SL CPIMS 4 12 15BF 2 1 3 3 3 3 ...

Page 32: ...YMBOL CODE Compal CODE NMV DESCRIPTION CABINET COLOR 4 FANM5516100 79PP0587 CABINET BACK ASSY White 4 FANM5516200 79PP0606 CABINET COVER ASSY BK A Black 5 2CPITS 3 12 3AF White 5 2CPITS 3 12 3KF Black 4 5 5 ...

Page 33: ... CODE Compal CODE NMV DESCRIPTION 6 CPIMS CUP 3 6 3AF 7 SCREW SPECIAL 8 SHIELD PCB ASSY SYMBOL CODE Compal CODE NMV DESCRIPTION 5 2CPITS 3 12 3AF 9 454A5267001 79PP0584 PCBA KEY B VK 530 LNM555G CN1 9 5 5 5 8 6 7 ...

Page 34: ...k SYMBOL CODE Compal CODE DESCRIPTION CABINET COLOR 6 CPIMS CUP 3 6 3AF 11 SPECIAL WASHER 4 8 15BF 26 CFIMS 3 6 3KF 12 453A7367001 79PP0801 PCBA POWER B VP 543 LNS55 13 453A7567001 79PP0802 PCBA INVERTER B VI 543 LN 14 DC020149900 79PP0806 H CON SET NS555 P802 SW White 14 DC020150000 79PP0855 H CON SET NS555 P802 SW B Black 10 CN2 J1 CN3 6 J2 14 P802 6 11 12 13 J951 J911 J901 P804 P803 2 ...

Page 35: ...CODE NMV DESCRIPTION CABINET COLOR 5 2CPITS 3 12 3AF 16 FANM5515100 79PP0586 CABINET FRONT ASSY White 16 FANM5515200 79PP0605 CABINET FRONT ASSY BK A Black SYMBOL CODE Compal CODE NMV DESCRIPTION 17 CPIMS 2 5 4 3AF 16 5 17 17 ...

Page 36: ...ODE DESCRIPTION CABINET COLOR 19 HINGE L 20 HINGE R 21 FANM5523100 79PP0620 STAND FRONT NM5523 ABS PC White 21 FANM5523200 79PP0695 STAND FRONT NM5523 ABS PC Black 22 BRACKET HINGE 23 FANM5517100 79PP0618 BASE ASSY NM5517 ABS PC M White 23 FANM5517200 79PP0693 BASE ASSY NEC NM5517 ABS Black 24 SL CPIMS 4 8 15BF 25 SL CPIMS 4 16 15BF 21 19 20 22 23 24 25 18 27 27 ...

Page 37: ...Adjustment conditions 2 2 2 1 Time for adjustment 2 2 2 2 Measuring instruments jigs and tools 2 2 2 3 Power supply voltage 2 2 2 4 Aging 2 2 3 Set adjustments 2 3 3 1 Power ON 2 3 3 2 Factory mode 2 4 3 3 Factory reset and auto contrast 2 8 4 VG 829 Setting Method 2 10 ...

Page 38: ...he unit to be adjusted shall be as specified below a A signal generator that can generate an output of signal timing produced by the adjusted VG 829 or specified in 4 Setting method for the VG 829 In this case however this signal generator shall be capable of displaying all white and all black as a screen display pattern The word adjusted shall mean that the amplitude of each signal R G B which is...

Page 39: ... shall be regarded as an NG item unless the LED is lit in green at that time 3 Press the NEXT ADJUST or Control key and confirm that an OSM is displayed in the LCD screen Information Indicate the Input signal timing mode Resolution Frequency 4 right No Function 3 left No Function plus No function minus No function NEXT Change tag to next right direction RESET No function EXIT Jump to main menu Pre...

Page 40: ...s EXIT to close OSM menu OSM Flame is CYAN How to use Service mode Page1 The page can check user s HOURS RUNNING and system total s HOURS RUNNING 1 Press NEXT to move cursor on HOURS RUNNING 2 Press 3 LEFT RESET at the same time can check HOURS RUNNING 3 Press 3 LEFT or 4 RIGHT to move cursor on FACTORY PRESET 4 Press RESET 4 RIGHT can reset all function to initial include user s HOURS RUNNING and...

Page 41: ... Service mode it should exit from Service mode too Hours Running Indicate On time and Off mode power save time hours minutes There are two timers The one can be cleared and the other cannot be cleared Following Key operation changes the timer indication Select Hours Running item RIGHT RESET Indicate timer which can be cleared LEFT RESET Indicate timer which cannot be cleared LEFT RIGHT RESET Timer...

Page 42: ...ent Contrast Auto adjust is executed Value should be cleared by factory reset in Service mode menu OSM Menu Change Bar or Number of User menu should be selected in Factory mode menu Factory Preset in Factory mode When proceed key is pushed at Factory preset Hours running and auto count is cleared ...

Page 43: ...t setting BK LCD1550V BK Shipment setting M3X RDT153X DESIGN The adjusting value displayed is modified into a bar or a numeral BAR The adjusting value is displayed in a bar Shipment setting DBG The adjusting value is displayed in numerals Debug VCO TYPE CAL Shipment setting FIX For evaluation When finishing the factory mode 1 When the EXIT key is pressed the OSM menu factory mode is closed and the...

Page 44: ...GHT LEFT RESET key at same time 3 LCD screen display warring message 4 1 Press exit key will exit factory mode 4 2 Press NEXT key will enter factory mode 5 When enter factory mode and move make to FACTORY PRESET 6 Press PLUS or MINUS key and will clear HOURS RUNNING AUTO INFORMATION and EEPROM etc ...

Page 45: ... 9 7 Move make to item 2 and change input video pattern to gray scale 8 Move make to AUTO GAIN and AUTO OFFSET 9 Press PLUS or MINUS key can adjust RGB offset and gain 10 Exit factory mode press exit key ...

Page 46: ...LSE H 3 BACK PORCH H 28 EQPfp H 0 EQPbp H 0 SERRATION H OFF EDP H OFF VDs H 0 V VBf H 0 OUTPUT MODE ANALOG NRZ RZ NRZ CV HS POS VS POS CS NEG HD NEG VD NEG RGB POS HT POS C NEG VIDEO 0 70V Set up 0 00V OUTPUT Sync 0 30V PAT SEL GRAY CHARA PATTERN Format Code Font Cell 1 82 16 16 16 16 GRAY Direction 0 L0 0 L1 17 L2 34 L3 51 L4 68 L5 85 L6 102 L7 127 L8 143 L9 159 LA 175 LB 191 LC 207 LD 223 LE 239...

Page 47: ... 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 599910552 Program D isk D sub to D S ub 15pin S ignal C able 1 2 Input Signal Horizontal synchronization frequency No specified Vertical synchronization frequency No specified 1 3 Programs required PNP EXE PNP INI 08109741 MDL EDID550V TXT ...

Page 48: ...t from the keyboard and press the Enter key The message of the screen Model Name LCD1550V Input serial number Enter only Use previous number c EDID data writing and inspection According to the screen commands make connections for the connectors and change over the signals The message of the screen Input 1 File 1 set V 42Hz N Hit any key Notes This message does not need to be followed The D SUB con...

Page 49: ...01 01 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 56 0A 00 00 00 FF 70 00 31 3 35 30 30 30 30 31 49 41 0A 20 20 20 00 49 4 Table 1 5 Data list 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 50: ...mm W 0 2mm 0 3mm L 3mm N 4 Polarizer Linear Scratch 0 01mm W 0 2mm 1 0mm L 10mm N 3 Polarizer bubble Peeling 0 15mm D 0 25mm N 4 Visual defect D Diameter N Number W Horizontal width L Vertical high Maximum Allowable Defect Count All Types N 7 Bright Dot Random N 4 Bright Dot 2 Adjacent N 2 Dark Dot Random N 4 Dark Dot 2 Adjacent N 3 Dark Dot 3 or More Adjacent N 0 Total Bright and Dark Dots N 4 Mi...

Page 51: ...ote 1 Bright dot defect description Two adjacent Note 2 Dark dot defect description Two adjacent Note 3 Dark dot defect description Three adjacent Type1 Type2 Type3 Type1 Type2 Type3 Type1 Type2 Type3 Type4 ...

Page 52: ...dot to bright dot Dark dot to dark dot Bright dot to dark dot Note 5 Average Diameter description Dusts would be judged by Average Diameter under vertical high 0 1mm and horizontal width 0 1mm condition 15mm NG 10mm NG b a Average Diameter D a b 2 10mm NG ...

Page 53: ...h test 1 The Ground Line of inlet shall be satisfied indicated below a The color of Ground Line is spiral of green and yellow b The Ground Line is connected at specified point on the chassis base with specified screw 2 Measurement Point Between the ground terminal of power supply cord and the chassis Screw The standard for a decision Less than 0 1ohm Input current 25A 3 2 Electric Strength It is a...

Page 54: ...oltage 255V AC 60Hz Measurement condition The leakage ammeter builds in the resistor of 1500 ohm and uses a thing with the bypass condenser of 0 15uF 3 4 Insulation Resistance It is applied to the PSU built in set Perform the tests at the points indicated below and make sure that the insulation resistance is within the prescribed range This test must be performed after the electric strength test M...

Page 55: ...bnormal screen 6 7 5 No OSM display 6 9 6 Abnormal Auto adjustment 6 10 7 Abnormal plug and play operation 6 11 7 1 Abnormal DDC2 6 11 8 Checking the interface circuit of sync signal 6 12 8 1 Checking the control circuit of horizontal sync pulse 6 12 8 2 Checking the control circuit of vertical sync pulse 6 13 9 Checking the resolution change IC movement 6 14 10 No power on 6 15 11 Checking the op...

Page 56: ...he time of the frequency that it can t be distinguished NO YES NG OK Does OSM display when you push NEXT Adjust or Control button Proceed section 4 No OSM display Check if the sync signal from Computer is output and if the video cable is connected normally Input the sync signal of computer or change the cable Proceed section 9 Checking the resolution change IC movement ...

Page 57: ...eo signal 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 NEXT Adjust or Control key Check if the LCD video signal cable is connected between the MAIN board and LCD module Failure point The cable is disconnected Next page Proceed section 4 Abnormal screen Check the video cable for failure Check the host for output sign...

Page 58: ...the STH pulse of negative polarity is output on CN2 pin 29 at TTL level Check the STV1 and STV2 of negative polarity are ouput on CN2 pin 35 36 J2 cable pulled out or disconnected 1 U3 failure 2 Printed wire broke between U3 and CN2 CN3 pin26 3 L10 R63 L11 or R64 failure Failure point 1 U3 failure 2 Printed wire broke between U3 and CN2 pin 29 3 R68 or L14 failure Failure point 1 U3 failure 2 Prin...

Page 59: ... U3 failure 2 Printed wire broke between U3 and CN3 pin 30 31 32 37 38 3 R69 70 71 74 75 L15 16 17 20 or L21 failure Check the data signal output on CN3 and CN2 R G B data pin OK NG Failure point 1 U3 failure 2 Printed wire broke between U3 CN2 and CN3 data line Failure point The cable broke between CN2 CN3 and LCD module ...

Page 60: ...al H at J901 pin3 Check F901 open Failure point F901 failure Replace the inverter board Failure point 1 Inverter cable disconnection 2 C915 C955 open NG 1 u p failure 2 printed wire broke between u p trace to P804 pin3 Is 12V source voltage provided to pins 1 and 2 of J901 in inverter board OK NG Failure point Inverter cable disconnection Error in SW REG board OK ...

Page 61: ...he negative STH sync pulse output to CN2 pin 29 from U13 pin 92 at TTL level Failure point Printed wire broke between U3 pin 92 and CN2 pin 29 NG OK Check the negative STV1 and STV2 sync pulse output to CN2 pin35 from U3 pin 83 84 at TTL level Failure point Printed wire broke between U2 pin 35 36 and CN2 pin 25 36 NG OK Failure point Printed wire broke between U3 pin 91 90 85 82 81 and CN2 pin 30 ...

Page 62: ...tinue Check the CPH clock output to CN2 and CN3 pin 26 from U3 pin 123 at TTL level Failure point Printed wire broke between U3 pin 123 and CN2 CN3 pin 26 Proceed section 9 Checking the resolution change IC movement ...

Page 63: ... NG Printed wire broke between U3 pin105 118 124 140 and CN2 CN3 Proceed section 9 Checking the resolution change IC movement Check the output of pulse from U3 pin105 118 and pin 124 140 when press NEXT ADJUST or CONTROL key ...

Page 64: ...e from U3 pin 49 61 67 75 Failure point 1 Printed wire broke between U6 pin 2 5 and U8 pin 2 30 2 Printed wire broke between U7 pin 2 5 6 9 12 15 16 19 and U8 pin 13 15 17 21 Proceed section 9 Checking the resolution change IC movement Failure point 1 Printed wire broke between U6 pin 3 4 and U3 pin 49 50 2 Printed wire broke between U7 pin 3 4 7 8 13 14 17 18 and U3 pin 51 58 67 75 OK ...

Page 65: ...al data on U9 pin 6 synchronize SCLK at TTL level NG Failure point U9 failure 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 U19 pin 6 and CN1 pin 15 may have failed 4 Cable failure OK ...

Page 66: ...ailure point 1 No separate sync or composite sync output by host Confirm the host output the sync signal 2 Video cable may have failed 3 Printed wire broke between CN1 pin 13 and U13 pin 30 4 R10 R38 L14 R74 open 5 U12 failure Procees section 9 Checking the resolution change IC movement NG OK Failure point U3 failure Check the hovizuntal sync signal on U3 pin 206 a TTL level ...

Page 67: ...separate sync output signal from the host Check the host 2 Video cable may have failed 3 Printed wire broke between CN1 pin 14 and U1 pin 11 4 R10 open 5 U1 failure OK Proceed section 9 Checking the resolution change IC movement Check the vertical sync signal on U1 pin 11 at TTL level ...

Page 68: ... 3 3V supply on U3 pins 65 76 86 121 143 157 167 198 193 183 179 175 188 Is there 2 5V supply on U3 pins 5 7 10 11 12 15 18 21 22 25 28 31 35 36 42 63 76 88 119 141 159 162 163 166 169 170 189 190 196 Is 14 318MHz clock input to U3 pin 3 4 at TTL level Is 14 318MHz clock output from Y1 at TTL level Proceed section 11 Checking the operation of CPU ...

Page 69: ...OK Failure point SW REG board failure Check the 5V power from SW REG board NG OK Failure point SW REG board failure NG OK Is LED turned on in amber momentarily when power button is pushed Proceed section 11 Checking the operation of CPU Failure point SW REG board failure ...

Page 70: ...CPU Is there 5 0V supply on U8 pin 32 NG OK Failure point Printed wire broke between output J2 pin1 2 and U8 power supply pin 32 Is 14 318MHz clock input to U3 pin 3 4 at TTL level NG OK Failure point Y1 failure Failure point U3 failure ...

Page 71: ...ck 7 2 2 Microcomputer Control Circuit 7 2 2 1 Clock circuit 7 2 2 2 Microcomputer port circuit 7 2 2 3 PIO General purpose port 7 2 3 Input Image Enlargement Display Circuit 7 3 3 1 Jag D 7 3 4 EEPROM Control Circuit 7 3 4 1 Data memory 7 3 5 Auto adjuster circuit control 7 3 5 1 Video level adjusting function 7 3 ...

Page 72: ...r is only fed to S9050 1 2 3 LCD panel 3 3V power control Circuit diagram MAIN Board P 5 5 Panel power control used Q6 and U15 from S9050 pin_94 PENVDD When the PENVDD stays at the high level the Panel voltage is 3 3V When the PENVDD stays at the low level the Panel voltage is 0V 2 Microcomputer Control Circuit 2 1 Clock circuit Circuit diagram MAIN Board P 3 5 The Y1 is a crystal the microcompute...

Page 73: ...gement Display Circuit 3 1 S9050 Circuit diagram MAIN Board P 1 5 The S9050 U3 is controlled through the internal microcomputer The S9050 is provided with the analog interface D SUB CN1 and the digital interface 4 EEPROM Control Circuit 4 1 Data memory Circuit diagram MAIN Board P 3 5 The display control data are held by the EEPROM U9 These display control data are accessed through the IIC bus of ...

Page 74: ...HOTO U801 AB038420404 79PP5021 IC KA3842A DIP 8 PWM U802 AB0043101T3 79PP5289 IC KA431Z TO 92 REGULATOR U9 SA024160008 79PP0359 IC EE 16K SO 8 C U901 SA097410000 79PP0632 IC BA9741F SOP 16 PWM TRANSISTORS Q1 SBX012400T0 79PP0058 TR DTC124EK SOT 23 Q2 SBX012400T0 79PP0058 TR DTC124EK SOT 23 Q3 SB7700200T5 79PP0189 TR 2N7002 Q4 SB1103600T3 79PP0055 TR 2SA1036K SOT 23 Q5 SB7700200T5 79PP0189 TR 2N700...

Page 75: ...13 DIO SB560 F17 DO 201AD P2 D901 SC11N4148T8 79PP0062 DIODE 1N4148 SM D910 SC11N4148T8 79PP0062 DIODE 1N4148 SM D911 SC10QS042T4 79PP0825 S DIO EC10QS04 D912 SC6BAV99100 79PP0826 S DIO ROW BAV99 JE 2P SO D950 SC11N4148T8 79PP0062 DIODE 1N4148 SM D951 SC10QS042T4 79PP0825 S DIO EC10QS04 D952 SC6BAV99100 79PP0826 S DIO ROW BAV99 JE 2P SO LED401 BC5G2093000 79PP0331 LED LYG2093 YEL GRN 3D ZD1 SC1LC2...

Page 76: ...P0769 LINE FILT BJ350 5MH 1 2A L803 DC1510009T0 79PP5278 BEAD NWE W5 3 5X6X1 0 T L841 CL300003600 79PP0768 CHOK COIL NM555 2 9UH 3 L842 CL300003600 79PP0768 CHOK COIL NM555 2 9UH 3 L9 SM010006300 79PP0447 CHIP MURATA BLM21P300S L911 CL310011600 79PP0613 CHOK COIL NM555 245UH K L951 CL310011600 79PP0613 CHOK COIL NM555 245UH K ELECTRICAL PARTS MISCELLANEOUS PARTS CABLAS DC190020600 79PP0614 CB ASY ...

Page 77: ...PP0092 R CHIP 0H 1 16W 5 L16 SD0130000T4 79PP0092 R CHIP 0H 1 16W 5 L17 SD0130000T4 79PP0092 R CHIP 0H 1 16W 5 L18 SD0130000T4 79PP0092 R CHIP 0H 1 16W 5 L19 SD0130000T4 79PP0092 R CHIP 0H 1 16W 5 L20 SD0130000T4 79PP0092 R CHIP 0H 1 16W 5 L21 SD0130000T4 79PP0092 R CHIP 0H 1 16W 5 R1 SD014100009 79PP0850 S RES 1 16W 100 1 0603 R10 SD014100009 79PP0850 S RES 1 16W 100 1 0603 R11 SD0132201T1 79PP01...

Page 78: ...0096 R CHIP 10K 1 16W 5 R48 SD0131002T3 79PP0096 R CHIP 10K 1 16W 5 R5 SD0131002T3 79PP0096 R CHIP 10K 1 16W 5 R50 SD0011800T0 79PP0847 S RES 1 8W 180 5 1206 R51 SD0134701T8 79PP0194 CHIP RES 1 16W 4 7K 5 R52 SD0011800T0 79PP0847 S RES 1 8W 180 5 1206 R53 SD0134701T8 79PP0194 CHIP RES 1 16W 4 7K 5 R54 SD014100009 79PP0850 S RES 1 16W 100 1 0603 R57 SD014100009 79PP0850 S RES 1 16W 100 1 0603 R58 S...

Page 79: ...013AL91M0 79PP0755 RES MOF 3W 1 3 5 S R820 CC013AL91M0 79PP0755 RES MOF 3W 1 3 5 S R821 CC0240171T0 79PP0757 RES FUSE 1 4W 24 5 R823 CC2002211T9 79PP5190 RES 1 8W 20K 5 R824 SD0114703T5 79PP0823 S RES 1 4W 470K 5 1206 R841 CC1000071T5 79PP5383 RESISTOR FUSE 1 2W 100 R842 CC0100071T6 79PP0754 RES FUSE 1 2W 10 5 R843 CC4700491T4 79PP0763 RES MOF 1W 470 5 R846 CC5600211T1 79PP0764 RES 1 8W 560 5 R847...

Page 80: ...05 R CHIP 22H 1 16W 5 RP7 SD302220A00 79PP0105 R CHIP 22H 1 16W 5 RP8 SD302220A00 79PP0105 R CHIP 22H 1 16W 5 RP9 SD302220A00 79PP0105 R CHIP 22H 1 16W 5 RT801 CC008086700 79PP0752 RES NTC 5A 8 15 SCK 08 CAPACITORS C10 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C100 SE024100FT1 79PP0114 C CERAMIC 10P 50V 1PF C101 SE024100FT1 79PP0114 C CERAMIC 10P 50V 1PF C102 SE024100FT1 79PP0114 C CERAMIC 10P...

Page 81: ...119 C CERAMIC 0 1U 16V 20 80 C45 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C46 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C47 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C48 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C49 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C5 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C50 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C51 SE053106Z00 79PP08...

Page 82: ... 01U 50V Z Y5V P C811 CB01006M1T0 79PP5344 ELE CAP 10U 50V M B P5 C812 CJ010C6JNT1 79PP5439 FILM CAP 0 01U 50V J PPN C813 CJ010C6JNT1 79PP5439 FILM CAP 0 01U 50V J PPN C814 CJ010D6JNT1 79PP0766 FILM CAP 0 001U 50V J PEN C815 CA022E601T4 79PP0746 CER CAP 220P 50V 5 NPO C816 CB02204M0TH 79PP0747 ELE CAP 22U 25V M B P5 TM C817 CA001A601T8 79PP0277 CERAMIC CAP 0 1U 50V Z Y C818 CA010CEZ000 79PP0744 CE...

Page 83: ...14 C CERAMIC 10P 50V 1PF C93 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C94 CB10003M110 79PP0866 ELE CAP 100U 16V 20 10 C95 SE025102K04 79PP0118 C CERAMIC 1000P 50V C950 SE026104K01 79PP0432 C CERAMIC 0 1U 16V K X7R C951 SE025103KT4 79PP0203 CHIP CER CAP 0 01U 50V C952 SE030105K08 79PP0435 C CERAMIC 1U 16V K X7R C953 SE043104K05 79PP0659 CER CAP 0 1U 25V K X7R C954 SK1515BAK00 79PP0663 FIL CAP ...

Page 84: ... PHOTO U801 AB038420404 79PP5021 IC KA3842A DIP 8 PWM U802 AB0043101T3 79PP5289 IC KA431Z TO 92 REGULATOR U9 SA024160008 79PP0359 IC EE 16K SO 8 C U901 SA097410000 79PP0632 IC BA9741F SOP 16 PWM TRANSISTORS Q1 SBX012400T0 79PP0058 TR DTC124EK SOT 23 Q2 SBX012400T0 79PP0058 TR DTC124EK SOT 23 Q3 SB7700200T5 79PP0189 TR 2N7002 Q4 SB1103600T3 79PP0055 TR 2SA1036K SOT 23 Q5 SB7700200T5 79PP0189 TR 2N7...

Page 85: ...13 DIO SB560 F17 DO 201AD P2 D901 SC11N4148T8 79PP0062 DIODE 1N4148 SM D910 SC11N4148T8 79PP0062 DIODE 1N4148 SM D911 SC10QS042T4 79PP0825 S DIO EC10QS04 D912 SC6BAV99100 79PP0826 S DIO ROW BAV99 JE 2P SO D950 SC11N4148T8 79PP0062 DIODE 1N4148 SM D951 SC10QS042T4 79PP0825 S DIO EC10QS04 D952 SC6BAV99100 79PP0826 S DIO ROW BAV99 JE 2P SO LED401 BC5G2093000 79PP0331 LED LYG2093 YEL GRN 3D ZD1 SC1LC2...

Page 86: ... LINE FILT BJ350 5MH 1 2A L803 DC1510009T0 79PP5278 BEAD NWE W5 3 5X6X1 0 T L841 CL300003600 79PP0768 CHOK COIL NM555 2 9UH 3 L842 CL300003600 79PP0768 CHOK COIL NM555 2 9UH 3 L9 SM010006300 79PP0447 CHIP MURATA BLM21P300S L911 CL310011600 79PP0613 CHOK COIL NM555 245UH K L951 CL310011600 79PP0613 CHOK COIL NM555 245UH K ELECTRICAL PARTS MISCELLANEOUS PARTS CABLE DC190020700 79PP0691 CB ASY NM555 ...

Page 87: ...0000T4 79PP0092 R CHIP 0H 1 16W 5 L16 SD0130000T4 79PP0092 R CHIP 0H 1 16W 5 L17 SD0130000T4 79PP0092 R CHIP 0H 1 16W 5 L18 SD0130000T4 79PP0092 R CHIP 0H 1 16W 5 L19 SD0130000T4 79PP0092 R CHIP 0H 1 16W 5 L20 SD0130000T4 79PP0092 R CHIP 0H 1 16W 5 L21 SD0130000T4 79PP0092 R CHIP 0H 1 16W 5 R1 SD014100009 79PP0850 S RES 1 16W 100 1 0603 R10 SD014100009 79PP0850 S RES 1 16W 100 1 0603 R11 SD0132201...

Page 88: ...0096 R CHIP 10K 1 16W 5 R48 SD0131002T3 79PP0096 R CHIP 10K 1 16W 5 R5 SD0131002T3 79PP0096 R CHIP 10K 1 16W 5 R50 SD0011800T0 79PP0847 S RES 1 8W 180 5 1206 R51 SD0134701T8 79PP0194 CHIP RES 1 16W 4 7K 5 R52 SD0011800T0 79PP0847 S RES 1 8W 180 5 1206 R53 SD0134701T8 79PP0194 CHIP RES 1 16W 4 7K 5 R54 SD014100009 79PP0850 S RES 1 16W 100 1 0603 R57 SD014100009 79PP0850 S RES 1 16W 100 1 0603 R58 S...

Page 89: ...013AL91M0 79PP0755 RES MOF 3W 1 3 5 S R820 CC013AL91M0 79PP0755 RES MOF 3W 1 3 5 S R821 CC0240171T0 79PP0757 RES FUSE 1 4W 24 5 R823 CC2002211T9 79PP5190 RES 1 8W 20K 5 R824 SD0114703T5 79PP0823 S RES 1 4W 470K 5 1206 R841 CC1000071T5 79PP5383 RESISTOR FUSE 1 2W 100 R842 CC0100071T6 79PP0754 RES FUSE 1 2W 10 5 R843 CC4700491T4 79PP0763 RES MOF 1W 470 5 R846 CC5600211T1 79PP0764 RES 1 8W 560 5 R847...

Page 90: ...05 R CHIP 22H 1 16W 5 RP7 SD302220A00 79PP0105 R CHIP 22H 1 16W 5 RP8 SD302220A00 79PP0105 R CHIP 22H 1 16W 5 RP9 SD302220A00 79PP0105 R CHIP 22H 1 16W 5 RT801 CC008086700 79PP0752 RES NTC 5A 8 15 SCK 08 CAPACITORS C10 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C100 SE024100FT1 79PP0114 C CERAMIC 10P 50V 1PF C101 SE024100FT1 79PP0114 C CERAMIC 10P 50V 1PF C102 SE024100FT1 79PP0114 C CERAMIC 10P...

Page 91: ...119 C CERAMIC 0 1U 16V 20 80 C45 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C46 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C47 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C48 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C49 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C5 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C50 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C51 SE053106Z00 79PP08...

Page 92: ... 0 01U 50V Z Y5V P C811 CB01006M1T0 79PP5344 ELE CAP 10U 50V M B P5 C812 CJ010C6JNT1 79PP5439 FILM CAP 0 01U 50V J PPN C813 CJ010C6JNT1 79PP5439 FILM CAP 0 01U 50V J PPN C814 CJ010D6JNT1 79PP0766 FILM CAP 0 001U 50V J PEN C815 CA022E601T4 79PP0746 CER CAP 220P 50V 5 NPO C816 CB02204M0TH 79PP0747 ELE CAP 22U 25V M B P5 TM C817 CA001A601T8 79PP0277 CERAMIC CAP 0 1U 50V Z Y C818 CA010CEZ000 79PP0744 ...

Page 93: ...114 C CERAMIC 10P 50V 1PF C93 SE027104NT0 79PP0119 C CERAMIC 0 1U 16V 20 80 C94 CB10003M110 79PP0866 ELE CAP 100U 16V 20 10 C95 SE025102K04 79PP0118 C CERAMIC 1000P 50V C950 SE026104K01 79PP0432 C CERAMIC 0 1U 16V K X7R C951 SE025103KT4 79PP0203 CHIP CER CAP 0 01U 50V C952 SE030105K08 79PP0435 C CERAMIC 1U 16V K X7R C953 SE043104K05 79PP0659 CER CAP 0 1U 25V K X7R C954 SK1515BAK00 79PP0663 FIL CAP...

Page 94: ...9 1 BLOCK DIAGRAM LCD1550V LCD1550V BK LA 15R02 1 LA 15R02 1 BK INTERFACE BOARD 12V ...

Page 95: ...SC6 1 5 2 3 6 4 C4 0 1uF 1 2 R15 10K 1 2 R13 27K 1 2 C8 0 1uF 1 2 D1 EC10QS04 1 2 C1 2 2pF 1 2 C2 2 2pF 1 2 D2 EC10QS04 1 2 C3 2 2pF 1 2 R16 100 1 2 R12 2 2K 1 2 R10 100 1 2 L1 FBM L11 160808 280LMT 1 2 U1 SN74LVC14PWR 1 3 5 9 11 13 7 14 2 4 6 8 10 12 A1 A2 A3 A4 A5 A6 GND VCC Y1 Y2 Y3 Y4 Y5 Y6 R2 75 1 1 2 R9 100 1 2 R4 75 1 1 2 R11 2 2K 1 2 R8 75 1 1 2 CN1 8 7 6 5 4 3 2 1 9 10 11 12 13 14 15 C7 8...

Page 96: ...33 22uF 50V 1 2 R23 1K 1 2 L6 BLM21P221SG 1 2 L7 BLM21P221SG 1 2 s9050 U3 s9050 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 156 155 154 ...

Page 97: ...uF 1 2 R44 10K 1 2 L9 BLM21P300S 1 2 U9 AT24LC16 8 5 6 4 7 3 2 1 VCC SDA SCL GND TEST A2 A1 A0 U8 12 11 10 9 8 7 6 5 27 26 23 25 4 28 29 3 2 30 22 24 31 1 13 14 15 17 18 19 20 21 32 16 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 CE OE PGM VPP D0 D1 D2 D3 D4 D5 D6 D7 VCC GND R35 10K 1 2 Q4 2SA1036K 3 2 1 R56 10K 1 2 R57 100 1 2 R55 10K 1 2 R48 10K 1 2 R47 10K 1 2 R59 10K 1 2 R46 1...

Page 98: ... 0 1uF 1 2 C89 0 1uF 1 2 C88 100uF 16V 1 2 C90 0 1uF 1 2 C76 0 01uF 1 2 U14 APL1117 25 1 2 3 GND VO VI C86 0 1uF 1 2 U13 APL1117 25 1 2 3 GND VO VI R62 100 1 2 C87 22uF 50V 1 2 Q5 2N7002 3 1 2 C80 0 1uF 1 2 R61 4 7K 1 2 C78 220uF 16V 1 2 U12 74HC4066 13 12 6 5 1 2 3 4 8 9 11 10 7 14 1E 4E 3E 2E 1Y 1Z 2Z 2Y 3Y 3Z 4Y 4Z GND VCC R60 4 7K 1 2 C79 0 1uF 1 2 Analog ground plane 2 Vout APL1117 3 3 SOT 22...

Page 99: ...39 40 VDD 9V VDD 9V GND GND EB5 EB4 EB3 EB2 EB1 EB0 GND EG5 EG4 EG3 EG2 EG1 EG0 GND ER5 ER4 ER3 ER2 ER1 ER0 GND CPH1 GND GND STH LOAD POL REV GND GND STV1 STV2 CPV OE GND GND C93 0 1uF 1 2 CP4 47pF 1 2 3 4 5 6 7 8 C94 100uF 16V 1 2 RP1 22 1 2 3 4 5 6 7 8 CP3 47pF 1 2 3 4 5 6 7 8 RP8 22 1 2 3 4 5 6 7 8 RP4 22 1 2 3 4 5 6 7 8 CP2 47pF 1 2 3 4 5 6 7 8 R66 1M 1 2 RP3 22 1 2 3 4 5 6 7 8 R67 100K 1 2 RP...

Page 100: ...ND 5 GND 6 R810 10K R811 4 7K R807 10 1 2W D802 PS104R Q803 2SC945 Q801 2SK2761 C805 100uf 400v C808 22uf 25v R809 1M Q804 BT169D R821 24 1 4W fusible D804 1N4148 C849 0 1uf C848 1000uf 10v D805 1N4148 C810 103 R842 10 1 2W fusible R841 100 1 2W fusible U800 LTV 817M B C800 222 Y1 D842 SB560 C842 103 C841 1000P 1KV C844 470uf 25V C843 470uf 25V C847 1000uf 10V L842 CHOKE L841 CHOKE R843 470 1W D80...

Page 101: ...T RT IN1 IN1 FB1 DTC1 FB2 OUT1 OUT2 DTC2 GND VCC IN2 IN2 SCP REF R910 316K 1 F901 ICP S2 3 C910 104 16V K X7R Q916 SI3457 1 2 3 4 5 6 PD1 PD2 PG PS PD3 PD4 R904 1M J951 JST SM02 8 0 B BHSS 1 TB 1 2 R955 130K 1 R951 442K 1 J901 98115 0603 1 2 3 4 5 6 D901 1N4148 1 2 C951 103 50V K X7R R954 20K 1 C950 104 16V K X7R C956 225 16V K X7R 1206 Q952 DTA124E 2 1 3 D912 BAV99 1 2 3 Q954 2SC4672Q 2 1 3 R912 ...

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