Acer P203 Скачать руководство пользователя | Manualshive

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29

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5.9 Checking the interface circuit of sync signal

5.9.1 Checking the control circuit of horizontal sync pulse

OK

NG

Failure Point

Video cable is failure.

OK

NG

Failure Point

1) Printed wire broke between P302 pin13
and I305 pin27.
2) FB309, R321 are short.
3) D307 or R324 or C327 is short.

Failure Point

Process "Checking the resolution change IC
movement" section.

Check the horizontal sync
signal on P302 pin13 TTL

level.

Check the horizontal sync

signal on I305 pin27 TTL

level.

5. Troubleshooting (continued)

ACER P203W

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Содержание P203

Страница 1: ...embly Procedures 12 Appendix III Spare Parts Llist Safety Notice Any person attempting to service this chassis must familarize with the chassis and be aware of the necessary safety precautions to be used when serving electronic equipment containing high voltage Published by LITE ON Service Printed in Taiwan All rights reserved Subject to modification 23th Jul 2007 Model ID R20BNUM M1 Service ACER ...

Страница 2: ... It is recommended that service engineers should have repairing knowledge experience as well as appropriate product training per new model before performing the service procedures NOTICE To avoid electrical shocks the products should be connect to an authorized power cord and turn off the master power switch each time before removing the AC power cord To prevent the product away from water or expl...

Страница 3: ...s specification 1 3 ELECTRICAL This section describes the electricalrequirement of the monitor The block diagram in Figure1 illustrates the various electrical sub system 1 3 1 Interface Connectors 1 3 1 1 Power Connector and Cables The AC input shall have an IEC CEE 22 type male power receptacle for connection to mains power The power cord shall be with length of 1 8 0 005 meters 1 3 1 2 Video Sig...

Страница 4: ... d e o 8 B l u e G N D 1 3 H S Y N C 4 N C 9 5 V 1 4 V S Y N C 5 D D C G N D 1 0 S y n c G N D 1 5 D D C S C L C o n n e c t o r P i n A s s i g n m e n t D S U B Pin D e s cription Pin N ame D e s cription 1 Red V ideo Red video signal input 2 G reen V ideo G reen video signal input 3 Blue V ideo Blue video signal input 4 G N D G round 5 D D C G N D D D C ground for the V ES A D D C 2Bi function ...

Страница 5: ...preset video timings shown in the following page Please see Note 3 1 3 3 4 OSD adjustment 1 Product Specification continued Function LED Color Full Power Blue color Sleep Orange color Table 1 1 3 3 3 On Screen Display The Lite ON On Screen Display system shall be used controlled by a Menu button If the buttons remain untouched for OSD turn off time while displaying a menu the firmware shall save t...

Страница 6: ...x 600 60Hz 37 879 40 9 117 800 x 600 72Hz 48 077 50 10 110 800 x 600 75Hz 46 875 49 5 11 108 832 x 624 74 55Hz 49 722 57 28 12 118 1024 x 768 60Hz 48 363 65 13 157 1024 x 768 70Hz 56 476 75 14 141 1024 x 768 75Hz 60 023 78 75 15 126 1152 x 864 75Hz 67 5 108 16 161 1280 x 960 60Hz 60 108 17 179 1280 x 1024 60Hz 63 981 108 18 131 1280 x 1024 75Hz 79 976 135 19 1680 x1050 60Hz 65 3 146 25 NOTE 1 76 F...

Страница 7: ...l have a continuous operating life of at least 40 000 hours at 25 The operating life is defined as having ended when the illumination of light has reached 50 of the initial value The lamps shall extend a sufficient amount from the edge of the light guide that sputtering over the life of the lamps shall not cause degradation of the luminance uniformity such as non illuminated bands along the edges ...

Страница 8: ...30mm and 0 4mm in diameter they must be at least 15mm apart 7 Go to cover page Dark Spots Lines Spots or lines that appear dark in the display patterns and are usually the result of contamination Defects do not vary in size or intensity contrast when contrast voltage is varied Contrast variation can be achieved through the use of varying gray shade patterns Bright Spots Lines Spots or lines that a...

Страница 9: ... lo c k o f p ic tu re O n ly A n a lo g In p u t M o d e l N A N A N A A n a lo g S e le c t in p u t s ig n a l fro m a n a lo g D S u b O n ly D u a l In p u t M o d e l N A N A N A D ig ita l S e le c t in p u t s ig n a l fro m d ig ita l D V I O n ly D u a l In p u t M o d e l N A N A N A D D C C I s w itc h S e le c t th e D D C C I O N o r O F F N A T h e D D C C I s w itc h d e fa u lt is...

Страница 10: ...2 OSD Manu continued 9 Go to cover page ACER P203W ...

Страница 11: ...3 1 Packing Exploded Diagram 3 Exploded Diagram 10 Go to cover page ACER P203W ...

Страница 12: ...3 2 Product Exploded Diagram 3 Exploded Diagram continued 11 Go to cover page ACER P203W ...

Страница 13: ...ecific positions of bracket chassis base Connect the cable between power board P802 and interface board P301 Connect the function key cable into interface board P306 Connect the FFC cable into interface board Take the key function cable out from the hole shown as photo Fix the function key cable with a PVC tape Turn the monitor faced down and put it on the Bracket Chassis module till both parts fi...

Страница 14: ... board Both of right and left sides Connect FFC cable to LCD panel There are two locks over here when plugging in should be noticed Use a Hex head screwdriver screwed the DVI and D SUB connectors No 1 4Hex Nut screws Size M3x8 Torque 3 5KGFxCM Take a key function board to hook with front bezel No 1 2 and connect to key function cable 4 Assembly and Disassembly Procedures continued S11 S10 S13 S12 ...

Страница 15: ...a and TC003 label on the correct position the same as below photo Put a ear over n he ssembled nit nd ress on force echanisms ocked nd irmly attached r c o t a u a p m l a f Take a LDPE EPE bag to cover the LCD monitor Take a PE bag to cover the stand base Take two cushion foams one is held the front side of LCD monitor and another is held the back side S20 S19 S18 S16 S15 S14 1 2 3 4 S17 4 Assemb...

Страница 16: ...n then packing the carton Put accessories of stand DVI cable and user s manual power cable on specific positions as photo below 4 Assembly and Disassembly Procedures continued S21 FEATURE LABEL VISTA LABEL STAND POWER CABLE DVI CABLE D SUB CABLE USER S MANUAL S22 15 Go to cover page ACER P203W ...

Страница 17: ...Take off two cushion foams Take out all accessories including D SUB cable power cable DVI cables user s manual and stand base and packing material from the carton Note It depends on whether users returning the accessories Open the carton with a proper tool Turn over the LCD monitor screen faced up S6 S5 S4 S3 S2 S1 1 2 3 4 S7 4 2 Disassembly procedures STAND POWER CABLE DVI CABLE D SUB CABLE USER ...

Страница 18: ... the locking mechanism Unhook the key function board from rear bezel disconnect the key function cable Use a Hex head screwdriver unscrewed 4 screws to release the DVI and D SUB connectors No1 4Hex Nut screws Size M3x8 Torque 3 5KGFxCM Use a Phillips head screwdriver unscrewed the No 1 2 screws to lease power plug No1 2 screw size M3x10 Torque 3 5KGFxCM S8 S10 S9 4 Assembly and Disassembly Procedu...

Страница 19: ... 1 4 Use a Phillips head screwdriver unscrewed the No 1 4 screws to release the interface board No1 4 screw size M3x6 Torque 9 10KGFxCM S17 S16 S15 S13 S12 1 2 S14 1 2 4 3 Examine the panel surface accoring to inspection criteria Put it aside 2 3 4 1 Use a Phillips head screwdriver unscrewed the No 1 4 screws to disassemble the LCD panel and bracket chassis module No1 4 screw size M3x6 Torque 3 4K...

Страница 20: ...le the power board No1 screw size M4x8 No2 4 screw size M3x6 Torque 9 10KGFxCM Disconnect the FFC P301 and function key cables to connectors of interface board S18 S19 4 Assembly and Disassembly Procedures continued 1 2 3 4 P301 P802 P306 FFC 19 Go to cover page ACER P203W ...

Страница 21: ...signal isn t being inputted it is indicated with No Signal Input it is indicated with Out Of Range at the time of the frequency that it can t be distinguished Does OSM display when you push PROCEED buttom Check if the sync signal from computer is output and if the video cable is connected normally Proceed checking the resolution change IC movement section Go to cover page 20 ACER P203W ...

Страница 22: ... Reconnect the video cable 3 Change the video cable NG OK NG Failure Point The LCD video signal cable is disconnected Next Page Is backlight lit Is backlight lit Check OSM menu is display on screen when you push the PROCEED key Check if the LCD video signal cable is connected between the Interface Board and LCD module Check the video cable for failure Check the host for output signal is all black ...

Страница 23: ...G Failure Point I305 is failure OK NG Continue NG Check the 5V power supply for P304 pin 1 2 3 Check the I302 pin2 if voltage is 3 3V Check if the voltage between I301 pin2 and pin3 is above 0 7V Check if the Q301 pin2 of PANELVCC_EN signal that outputted by I305 pin85 is High level Check the I301 pin2 if voltage is 5V Check the D326 pin1 if voltage is 1 8V Failure Point 1 Printer wire between R30...

Страница 24: ...n P301 pin2 R303 and I305 pin 88 2 I305 is failure OK NG Failure Point 1 printed wire broke between P301 pin3 R301 and I305 pin86 2 I305 is failure Failure Point 1 Back light unit of LCD module is failure 2 Inverter Cable is disconnected Check the BKLT_EN signal of the DC input P301 pin2 at TTL high level Check the BKLT_ADJ signal of the input P301 pin3 from I305 pin86 is a PWM signal 23 Go to cov...

Страница 25: ... and I306 pin23 2 Video cable is failure 3 FB303 FB304 R309 is open 4 R311 is short or open 5 C315 is short or open NG OK Failure Point Printed wire broke between I305 and P304 NG OK Check the R G B video signal from computer input on P302 of video connector Check the R G B input video signals on I305 pin18 20 23 respectively that their level is 0 0 to 0 7Vp p Check all LVDS signals being output t...

Страница 26: ...pin 17 18 and I306 pin 3 4 2 Video cable is failure 3 R336 R337 open NG OK Failure Point Printed wire broke between I305 and P304 NG OK Check the DVI video signal from computer input on P303 of DVI I video connector Check the DVI input video signals on I305 pin 3 4 6 7 9 10 12 13 respectively that differential input voltage is 150 to 1200mV and input commond mode voltage is 3 3V Check all LVDS sig...

Страница 27: ...n4 pin5 R369 and I305 pin90 2 Printed wire broke among P306 pin5 R372 and I305 pin89 3 C386 C388 C389 C390 are short Failure Point I305 is failure Check the input TTL level whether was changed when pressed function keys on the P306 pin 4 5 normal is high level when push buttom generated low level plus Check the input TTL level of I305 pin89 90 whether was changed when pressed function keys Refer t...

Страница 28: ...failure OK NG Failure Point The Video cable is failure Failure Point 1 Printed wire broke among I305 pin30 pin31 R328 R330 and P302 pin12 15 2 I303 maybe failure 3 R326 R327 are open 4 R328 or R330 or C330 or C331 is open or short Confirm the host computer supplies DDC2B mode Check the voltage on P302 pin9 that is power DC 5 V Check the voltage on I303 pin8 that is power DC 5 V Check the signal on...

Страница 29: ...wire broke between I305 pin 1 pin100 I304 pin 5 6 and P303 pin 7 6 2 I305 maybe failure 3 R347 R349 is open 4 R345 or R346 or C344 or C346 is short OK NG Failure Point 1 Printed wire broke between P303 pin14 and pin16 2 R338 is open 3 C340 or C341 is short Confirm the host computer supplies DDC2 mode Check the voltage on P303 pin14 that is power DC 5 V Check the voltage on P303 pin 16 that is 4 5V...

Страница 30: ...s failure OK NG Failure Point 1 Printed wire broke between P302 pin13 and I305 pin27 2 FB309 R321 are short 3 D307 or R324 or C327 is short Failure Point Process Checking the resolution change IC movement section Check the horizontal sync signal on P302 pin13 TTL level Check the horizontal sync signal on I305 pin27 TTL level 5 Troubleshooting continued ACER P203W ...

Страница 31: ... between I305 pin84 and C378 2 C78 is short NG OK Failure Point 1 Printer wire broke between I305 pin84 and C378 2 C381 is short 3 R358 D328 is failure 4 I305 is failure Check 3 3V supply on I305 pin8 pin14 pin16 pin24 pin32 pin49 pin56 pin75 pin98 Check 1 8V supply on I305 pin 51 66 82 34 Check X301 14 318MHz clock input to I305 pin96 and pin97 at TTL level Check I305 pin 84 HWRESET signal is low...

Страница 32: ... broke between I302 pin2 pin4 and Q305 pin1 Failure Point D326 is failure OK NG Failure Point 1 Printed wire broke between I302 pin 2 4 Q306 pin1 and I305 VCTRL pin 2 FB311 FB312 FB313 FB314 FB315 are open Check the 5V is output from P301 pin5 pin6 Check the 5V is input to I302 pin3 Check the 3 3V is output from I302 pin2 4 Check the 3 3V is input to Q305 pin1 Check the 1 8V is output from D326 pi...

Страница 33: ...3V Out Option LCD Module Backlight 1 8v Power Con Panel Con Reset P306 Key Con X301 VCTRL Q305 RC VLCD D SUB I303 DDC 24LC02B VGA DDC CLK _ _ VGA DDC DAT _ _ P302 R G B Hs Vs TMDS DDC 24LC02B I304 DVI DDC SCL _ _ DVI DDC DAT _ _ P303 DVI D Analog Video Input Digital Video Input TSUMU58BWHL LF DVI OPTION AUO M220EW01 V2 V0 M201EW02 V8 V9 SEC LTM220M1 V0 L01 CPT CLAA201WA04A 1 2 3 4 5 6 7 8 9 10 11 ...

Страница 34: ...75V R814 22 MOF R122 15K 1 I101 OZ9938 8 7 6 5 1 2 3 4 9 10 11 12 13 14 15 16 NC OVPT VSEN ISEN DRV1 VDDA TIMER DIM NC ENA LCT SSTCMP CT GNDA DRV2 PGND D117 1N4148 2 1 R830 68K 0805 Q806 3904 2 1 3 R101 10K R815 4 7K MOF R133 33 R140 1K 0805 I803 AP431 1 1 A 2 C 3 R F801 3 15AL250V R119 15K 1 R825 1K D116 1N4148 2 1 R103 18K R125 3M 1 4W Q101 2N7002 1 2 3 R811 0 27 2W D112 1N4148 2 1 C826 1uF 50V ...

Страница 35: ...DCP CTRLn _ DVI DDC INTERFACE 4 DVI DDC INTERFACE DVI DETn _ DVI DDC DAT _ _ DVI DDC CLK _ _ RX2 RX2 RX1 RX0 RX0 RXC RXC RX1 DDC WPn _ VCC5V HDCP CTRLn _ PANEL KEY INTERFACE 6 PANEL KEY INTERFACE LVA3P ADC1 IN _ ADC2 IN _ LED G _ LED A _ VLCD LVA3M LVA2M LVA2P LVA1M LVA1P LVA0M LVA0P LVACKM LVACKP LVBCKM LVBCKP LVB3M LVB3P LVB2M LVB2P LVB1M LVB1P LVB0M LVB0P VCC3V3 VLCD LVACKP ADC2 IN _ SOG LVA1P ...

Страница 36: ...6V C311 0 1uF TP10 I301 AO3419 3401 1 2 3 C301 0 1uF I302 AIC1084 33PM _ 1 2 3 4 ADJ VOUT VIN TAB FB301 PBY160808T 600Y S TP4 TP13 C302 0 1uF R301 100 22K C314 100uF 16V Q301 MMBT3904 2 1 3 P301 JWT A2001WV2 9P 1 2 3 4 5 6 7 8 9 C306 0 1uF R306 47K R303 1K R307 2K4 Hole1 Case GND _ 1 2 6 8 7 5 4 3 C307 100uF 16V C310 10uF 16V TP3 C312 0 1uF Hole2 Case GND _ 1 2 6 8 7 5 4 3 TP12 TP9 C313 100uF 16V ...

Страница 37: ...0 TP23 R330 47 C317 47nF FB309 SBK160808T 451Y S D306 MMSZ5232B TP166 R315 470 C326 100pF TP40 TP27 C330 47pF D310 MMSZ5232B R316 100 C323 47nF TP50 TP41 R328 47 TP26 C321 0 1uF TP30 C318 1nF TP35 C316 47nF R311 75 1 _ FB305 SBK160808T 110Y S P302 CONNECTOR DB15 8 15 7 14 6 13 5 12 4 11 3 10 2 9 1 16 17 TP36 TP46 R309 68 R319 47K TP28 C322 47nF R318 100 TP42 TP34 TP49 R321 470 TP37 TP31 R327 12K T...

Страница 38: ... RX1 RX1 GND RX3 RX3 5V GND HP RX0 RX0 GND RX5 RX5 GND RXC RXC 28 27 RED GRN BLU HS GND 29 30 31 32 C340 0 1uF C339 0 1uF C337 0 1uF D314 MMBD7000 3 1 2 C333 0 1uF R339 10 TP60 I304 24C02 1 2 3 4 5 6 7 8 A0 A1 A2 GND SDA SCL WP VCC TP67 TP68 C336 0 1uF D313 MMBD7000 3 1 2 R344 4K7 TP58 TP52 TP80 TP61 D320 MMSZ5232B NC R349 47 C334 0 1uF C332 0 1uF R332 10 TP74 TP69 C345 47pF D316 MMBD7000 3 1 2 TP...

Страница 39: ...SI SCK HOLD VCC R353 100 TP87 C354 0 1uF C349 0 1uF C374 0 1uF C365 0 1uF TP99 I305 TSUMU58BWHL LF 23 20 21 18 22 19 17 27 28 15 26 25 37 39 38 40 47 86 59 96 97 60 61 62 63 64 65 67 68 69 70 71 72 73 74 77 78 58 55 54 2 5 3 4 6 7 8 9 10 12 13 11 29 33 24 56 53 52 81 51 30 31 100 1 93 14 75 35 48 85 88 89 90 91 92 94 95 99 43 44 84 41 42 98 16 32 49 66 82 34 50 57 76 79 83 80 87 36 45 46 RIN0P GIN...

Страница 40: ...D Amber _ LED Blue _ KEY ADC2 _ KEY ADC1 _ VCC3V3 VLCD TP137 R366 4K7 C388 0 1UF TP112 TP114 C389 0 1UF TP116 C390 0 1UF TP107 C386 0 1UF R369 100 TP110 TP117 P304 CVILUX CF25302D0R0 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 TP124 TP109 R372 100 P306 JWT A2001WV2 06 1 2 3 4 5 6 TP131 TP136 TP108 R365 56K 1 _ TP119 TP111 TP126 TP130 R364 56K 1 _ TP121 TP...

Страница 41: ...TTON S603 SW PUSHBUTTON S602 SW PUSHBUTTON R605 56K 1 _ C602 0 1uF S606 SW PUSHBUTTON R606 30K 1 _ R607 15K 1 _ R602 56K 1 _ R604 15K 1 _ R601 100 S605 SW PUSHBUTTON P601 JWT CN125WR0 6PS 1 2 3 5 4 6 7 8 C601 0 1uF R600 100 Y B D601 LED 2 1 4 3 6832190200P01 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 A B C D E F G A B C D E F G Go to cover page 40 ACER P203W ...

Страница 42: ...ACER_LCD_P203W LAYOUTS_POWER BOARD _ POWER BOARD BOTTOM SILK POWER BOARD TOP SILK 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 A B C D E F G A B C D E F G PCB No Go to cover page 41 ACER P203W ...

Страница 43: ...6 11 ACER_LCD_P203W LAYOUTS_INTERFACE BOARD _ PCB No 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 A B C D E F G A B C D E F G Go to cover page 42 ACER P203W ...

Страница 44: ...6 12 ACER_LCD_P203W LAYOUTS_FUNCTION KEY BOARD _ PCB No 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 A B C D E F G A B C D E F G Go to cover page 43 ACER P203W ...

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