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Acer AL2251W, Руководство по обслуживанию

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51   

Inverter board 

R829

  75 KOHM +-5% 1/10W            

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D817

BAV99PT

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R814

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R810

39

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PT803

POWER X'FMR

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C814
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R832 9.1K

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R842 9.1K

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CT

R805

75 KOHM +-5% 1/10W

Q809
PMBS3904

SST

Q811
PMBS3906

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Q807

RK7002

D803

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C819
1uF

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R846

200K

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R812

22

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Q803
PMBS3904

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D804
LL4148

JP801

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IC801

OZ9938GN

1
2
3
4
5
6
7
8

9

10

11

12

13

14

15

16

DRV1
VDDA
TIMER
DIM
ISEN
VSEN
OVPT
NC1

NC2

ENA

LCT

SSTCMP

CT

GNDA

DRV2

PGND

F801

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BAV99PT

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R801

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PDTC144WK

R806

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C802

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AM4910N-T1-PF

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PMBS3904

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R813

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R843

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Q806
PMBS3906

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C825
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D802
BAV99PT

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OP3

R839

  75 KOHM +-5% 1/10W            

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1

5

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CN802
CONN

1
2

D818

LL4148

CT

C816

300K

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C830
0.1uF/25V

D813

BAV70PT

3

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1

<Doc>

1

<Title>

Custom

1

1

Monday , February  12, 2007

Title

Size

Document Number

Rev

Date:

Sheet

of

R844

5.6K

 1/10W

C

8

2

8

0

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F

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R825 9.1K

 1/10W

 

 

Содержание AL2251W

Страница 1: ...1 Acer AL2251W Service Guide ...

Страница 2: ...2 Service Guide Version and Revision Version Release Date Revision History TPV model A00 Mar 30 2007 Initial Release TC7AMUDBWGAGAC ...

Страница 3: ...buyer and not Acer Incorporated its distributor or its dealer assumes the entire cost of all necessary servicing repair and any incidental or consequential damages resulting from any defect in the software Intel is a registered trademark of Intel Corporation Pentium and Pentium II III are trademarks of Intel Corporation Other brand and product names are trademarks and or registered trademarks of t...

Страница 4: ...erference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television recep...

Страница 5: ... purpose of the grounded plug Unplug the unit during a lightning storm or when it will not be used for long periods of time This will protect the monitor from damage due to power surges Do not overload power strips and extension cords Overloading can result in fire or electric shock Never push any object into the slot on the monitor cabinet It could short circuit parts causing a fire or electric s...

Страница 6: ...tware Flow chart 16 Main Board Layout 18 Adjusting the viewing angle 19 Rear Bezel 20 Chapter 2 Operating Instructions 21 External Controls 21 Front Panel Controls 22 Adjusting the picture 23 Hot Key Menu 26 OSD Message 26 LOGO 27 Chapter 3 Machine Disassembly 28 Chapter 4 Troubleshooting 35 Chapter 5 Connector Information 39 Chapter 6 FRU Field Replacement Unit List 40 Exploded Diagram 41 Chapter...

Страница 7: ...rs Description The LCD monitor is designed with the latest LCD technology to provide a performance oriented product with no radiation This will alleviate the growing health concerns It is also a space saving design allowing more desktop space and comparing to the traditional CRT monitor it consumes less power and gets less weight in addition MTBF target is 50k hours or more Chart of AL2251W Panel ...

Страница 8: ...t to Factory preset value cut off raster User contrast control Set to factory preset value which allows that the brightest two of 32 linear distributed gray scales 0 700mv can be distinguished User red white balance Green white balance and Blue white balance control In the center unless otherwise specified Power input 230V 5 Ambient temperature 20 5 Display mode 1680x1050 60 Hz all white Measureme...

Страница 9: ...9 LCD Monitor General Specification ...

Страница 10: ...10 ...

Страница 11: ...11 LCD Panel Specification General Specifications ...

Страница 12: ...12 Optical Specifications ...

Страница 13: ...13 Supported Timing ...

Страница 14: ... logic and DDC The Inverter board will drive the backlight of panel and the DC DC conversion The Adapter will provide the 12V DC power to inverter power board Video signal DDC Inverter Board Flat Panel and CCFL backlight Main Board Key board RS232 Connector For white balance adjustment in factory mode HOST Computer CCFL Drive AC IN 100V 240 Adapter Board ...

Страница 15: ...ard Diagram LCD Interface Scalar MST9259BH LF Include ADC OSD etc MCU MTV416GMV OSD Control Interface Keypad D SUB Connector EEPROM 24C02 Crystal 14 318MHZ EEPROM AT24C16N Crystal 24MHZ DVI Connector EEPROM 24C02 ...

Страница 16: ...16 Software Flow Chart N Y 1 2 N Y 5 Y N 10 Y N 12 Y N 7 Y N 6 4 3 8 9 14 11 13 Y N 15 Y N 16 17 19 Y N 18 ...

Страница 17: ... set it to green color Scalar initializes 10 In standby mode 11 Update the lifetime of back light 12 Check the analog port are there any signals coming 13 Does the scalar send out an interrupt request 14 Wake up the scalar 15 Are there any signals coming from analog port 16 Display No connection Check Signal Cable message And go into standby mode after the message disappears 17 Program the scalar ...

Страница 18: ...IN U402 MTV416GMV RN102 DVI CONNECTOR 24PIN U705 IC AIC1084 33PMTR R AIC CN701 DC JACK 3PIN U405 CAT24WC08W SOIC 8 CN702 WAFER 6P RIGHT ANGLE PITCH 2 0 U706 AZ1117D 2 5 E1 CN407 WAFER 30P 2 0MM RIGHT ANGLE U704 AZ1117D 2 5 E1 CN601 WAFER 4P RIGHT ANGLE U703 IC AIC1084 18PMTR R AIC CN602 PHONE JACK 5PIN U702 IC AIC1117 33PYTR R AIC CN603 PHONE JACK 5PIN ...

Страница 19: ...n you change the monitor s angle You can adjust the angle of the monitor from 5 t o 15 but please notice that the rear obliquity of the monitor must not be over 15 when you adjust it otherwise the m achine may be inclined NOTES Do not touch the LCD screen when you change the angle It may cause damage or break the LCD screen Careful attention is required not to catch your fingers or hands when you ...

Страница 20: ...20 Rear Bezel Item Description Item Description 1 D SUB Cable 4 External Adapter 2 DC Jack Power Cable 5 DVI Cable 3 AC Power Cord 6 Audio cable ...

Страница 21: ...picture can be adjusted to your personal preferences The power cord should be connected Connect the video cable from the monitor to the video card Press the power button to turn on the monitor position The power indicator will light up External Controls Item Description Item Description 1 Volume 4 MENU ENTER 2 Volume 5 Auto Adjust Key Exit 3 Power Key Power Indicator Chapter 2 ...

Страница 22: ... EXIT OSD menu 2 When OSD menu is in off status press this button for 2 seconds to activate the Auto Adjustment function The Auto Adjustment function is used to set the HPos VPos Clock and Focus NOTES Do not install the monitor in a location near heat sources such as radiators or air ducts or in a place subject to direct sunlight or excessive dust or mechanical vibration or shock Save the original...

Страница 23: ...s or to select the desired function 3 Press the MENU button to select the function that you want to adjust 4 Press or to change the settings of the current function 5 To exit and save select the exit function If you want to adjust any other function repeat steps 2 4 Analog Signal Input Digital Signal Input ...

Страница 24: ...24 b The Description For Function Control LEDS ...

Страница 25: ...25 ...

Страница 26: ...en Analog signal input if User Press Hot Key Auto will show this message and the monitor do the auto config function Input Not Supported When the Hsync Frequency Vsync Frequency or Resolution is out of the monitor support range will show this message This message will be flying Cable Not Connected Analog Only Model When the video cable is not connected will show this message This message will be f...

Страница 27: ...here is no video input signal present When there is no video input signals this monitor following a time out period will automatically switch to an OFF mode This reduces the monitor s internal power supply consumption After the video input signal is restored full power is restored and the display is automatically redrawn The appearance is similar to a Screen Saver feature except the display is com...

Страница 28: ...chapter contains step by step procedures on how to disassemble the monitor for maintenance Disassembly Procedure 1 Remove the hinge cover of base stand and remove the screws Then remove the back cover Fig1 2 Fig 1 Fig 2 Chapter 3 ...

Страница 29: ...29 2 Remove the screws to release base stand Fig 3 Fig 3 3 Remove the screws to remove the front bezel Fig 4 Fig 4 ...

Страница 30: ...30 4 Remove the shield Fig5 Fig 5 5 Remove the screws to remove the inverter board Fig 6 7 Fig 6 ...

Страница 31: ...31 Fig 7 6 Remove the screws to remove the frame of the panel Fig 8 9 Fig 8 Fig 9 ...

Страница 32: ...32 Fig 10 7 Remove the screws to remove the base back cover Fig 11 12 Fig 11 Fig 12 ...

Страница 33: ...33 8 Remove the screws to remove the base farther Fig 13 Fig 13 9 Remove the screws to remove the INPC wire LVD wire speaker wire Fig 14 Fig 14 ...

Страница 34: ...34 10 Remove the screws to remove the main board Fig 15 16 Fig 15 Fig 16 ...

Страница 35: ...f the picture is normal Please reinsert and make sure the AC of 100 240 is normal Reinsert or check the power section Check if X401 X402 oscillate waveforms are normal Measure U701 Pin 2 12V U702 Pin 2 3 3V U705 Pin 2 3 3V OK OK NG NG NG Measure CN701 Pin3 12V Replace U401 Replace X401 X402 NG Replace Adapter Replace U701 U703 U705 OK OK NG ...

Страница 36: ...PIN2 3 3 Replace U701 U702 U705 Check if X401 X402 oscillate waveforms are normal Replace X401 X402 Check if the sync signal from computer is output and video cable is connected normally Input the sync signal of computer or change the cable Replace U401 NG OK NG OK OK NG ...

Страница 37: ...ve circuit Q702 Q705 Q703 In normal operation when LED green R726 Should 5 V If PPWR no response when the power switch Turn on and turn off replace the U401 MST9259BH LF OK NG OK OK OSD is unstable or not working Is Keypad board connecting normally Is Button Switch normally Is Keypad board normally Check main board Connect Keypad Board Replace Button Switch Replace Keypad Board OK NG NG NG ...

Страница 38: ...3 Check the pin1 of IC801 have PWM wave Change IC801 Check D801 has the output of square wave at short time CheckQ805 Q807 Q803 Q801or Q806 Q808 Q804 D802 Check the resonant wave of pin2 pin4 for PT801 PT802 Check the output of PT801 PT802 Check Q806 Q807 C841 Check connecter lamp OK Change PT801 PT802 OK OK OK OK OK OK NG NG NG NG NG NG NG ...

Страница 39: ...39 Connector Information The following figure shows the connector locations on the monitor Chapter 5 ...

Страница 40: ...hatever reasons a part number change is made it will not be noted in the printed Service Guide For ACER AUTHORIZED SERVICE PROVIDERS your Acer office may have a DIFFERENT part number code from those given in the FRU list of this printed Service Guide You MUST use the local FRU list provided by your regional Acer office to order FRU parts for repair and service of customer machines NOTE To scrap or...

Страница 41: ...41 Exploded Diagram Model AL2251W ...

Страница 42: ...42 Part List Above picture show the description of the following component Item Picture Description 1 Back Cover 2 Base back cover 3 Hinge cover 4 Panel ...

Страница 43: ...43 5 Inverter Board 6 Main Board 7 Speaker ...

Страница 44: ...SCALER 2 5MVDD 3 3AVDD 2 5MVDD 3 3DVDD 1 8V_VDD SOG GIN GNDG BIN GNDB GNDR RIN HSYNC VSYNC B B G G R R CLK CLK FSDQSU0 FSWE FSDQSU1 FSCLK FSDQM1 FSCLK FSDQSU2 FSBKSEL0 FSDATAU 0 31 FSDQM0 FSCKE FSCAS FSBKSEL1 FSDQSU3 FSRAS FSADDR 0 11 HWRESET WR INT RD ALE AD0 AD1 AD2 AD3 Volume VLCD AdjBACKLITE B5 5 Frame Memory 2 5V_DMQ 2 5V_DMC FSADDR 0 11 FSDQSU0 FSDQSU1 FSWE FSDQM0 FSDATAU 0 31 FSBKSEL1 FSRAS...

Страница 45: ...OUT VOUT C736 NC 0 1uF 16V C728 0 1uF R713 4 7K 1 16W 12V_IN C770 0 1uF MH6 1 C709 220uF 16V R711 10K 1 16W C703 100uF 16V 2 5MVDD 5 TO 263 VCC5V MH3 1 C B E FB703 600 OHM L702 120 OHM R720 NC L701 NC R712 4 7K 1 16W 3 3DVDD Q703 PMBS3904 VCC5V R728 10K 1 16W C714 0 1uF C712 0 0047uF R705 0 1 16W LP701 BEAD 4 1 5 6 3 2 2 5V FOR DDR R726 0 1 16W VCC12V MH11 1 L701A1 2 2UH onPOWER 7 VCC12V C729 0 1u...

Страница 46: ...ze Document Number Rev Date Sheet of DVI5V U101 M24C02WMN6 1 2 3 4 5 6 7 8 A0 A1 A2 GND SDA SCL WP VCC DDC_WP 7 D112 BAV70 3 1 2 C109 0 047uF R115 1K 1 16W 3 3DVDD C114 33pF R 5 R134 10 1 16W VSI R105 470 1 16W R131 4 7K 1 16W ST_DET1 7 R137 10 1 16W D105 BAV99 3 1 2 D123 BAV99 3 1 2 R114 100 1 16W R102 100 1 16W FB101 0 1 16W D101 LL5232B 5 6V 5 R107 75 1 16W R123 10K 1 16W R135 10 1 16W D108 LL5...

Страница 47: ...1 GNDR 4 CLK 4 DGND AVDD_MPLL MVref TXB3 FSDATAU31 U401 MST9259BH LF 165 186 185 184 179 178 177 176 214 213 218 217 204 192 194 220 219 216 215 208 207 210 231 57 56 55 54 44 43 42 41 22 19 18 15 13 12 10 9 30 29 28 27 26 25 24 23 2 4 6 7 3 40 37 36 35 34 33 32 31 58 59 60 61 63 62 64 67 68 8 21 151 38 77 234 133 129 174 69 256 145 180 71 72 73 74 11 17 16 20 70 152 39 181 199 1 128 146 182 80 18...

Страница 48: ...SDATAU31 C305 0 1uF FSVREF FSDATA3 Near The DDR SDRAM IC Stub as short as possible FSDATAU30 FSDATA8 RN301 33 1 16W 1 2 3 4 8 7 6 5 FSDATAU 0 31 5 FSDATAU19 FSDATA27 FSDATAU4 FSDQS1 FSDATAU26 FSADDR3 C317 22uF 16V FSDATAU28 FSDQS2 2 5V_DMQ FSADDR11 FSDATAU21 FSDATA3 FSADDR4 FSADDR9 FSDATAU7 FSDATAU21 RN302 33 1 16W 1 2 3 4 8 7 6 5 C314 0 1uF C321 0 1uF FSWE 5 FSDATAU20 FSBKSEL1 5 FSBKSEL1 FSCLK FS...

Страница 49: ...EN ALE P TXD P3 1 RXD P3 0 P4 3 ISP P4 0 P4 1 GND VCC P1 0 P1 1 P1 2 P1 3 P1 4 P1 5 P1 6 P1 7 P4 2 RP402 10K 1 16W 1 2 3 4 8 7 6 5 D406 BAV99 3 1 2 WR 5 VCPU RP401 10K 1 16W 1 2 3 4 8 7 6 5 R488 4 7K 1 10W C453 1UF 50V R423 10K 1 16W LED_B R456 10K 1 16W Q403 PMBS3904 AUDIO_SD 8 DVI_CLK 4 5 R455 10K 1 16W ST_DET2 4 KEY_LEFT C433 10uF 16V G1773 J AC X 1 070309 J MCU B 7 8 Friday March 09 2007 Title...

Страница 50: ...D INL VAROUT_L VOLUME VAROUT_R NC INR SVR STBY MUTE GND OUTR VS VS OUTL GND GND GND R607 220K 1 16W FB603 120 OHM OUT_R Volume 5 G1773 J AC X 1 070309 J AUDIO A4 8 8 Friday March 09 2007 Title Size Document Number Rev Date Sheet of C608 220uF 16V FB604 120 OHM C607 220uF 16V C605 220uF 16V VCC12V_AUDIO R609 75 1 16W R601 18K 1 16W R602 18K 1 16W R604 1K 1 16W VCC12V_AUDIO 3 R605 20K 1 16W C602 220...

Страница 51: ...2 LL4148 CN805 CONN 1 2 5V R837 39 1 8W R826 10 1 8W D809 LL4148 Q813 RK7002 C837 1uF 25V D808 LL4148 ACER 22 INPCC44AA1P VS3 R819 3K 1 10W VS3 OSP R820 100K 1 10W CN801 CONN 2 4 6 1 3 5 C840 4 7uF 16V R840 3K 1 10W OP2 Q810 RK7002 ZD801 RLZ5 6B JP802 NC VS2 R856 1KΩ 1 10W Q808 AM4910N T1 PF 1 2 3 4 8 7 6 5 S1 G1 S2 G2 D1 D1 D2 D2 R818 200KΩ 1 4W C804 1uF C806 NC VS1 CN804 CONN 1 2 D823 1KΩ 1 4W O...

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