Acer AL1511 Service Manual Download Page 29 | Manualshive

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Acer AL1511 Service Manual Download Page 29

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Troubleshooting

This chapter provides troubleshooting information for the AL1511:

Main Board

Defect Mode

Failure Analysis

Repair

Testing

Chapter 4

Completed

NG

Next Step

Abnormal

Display

Missing Line

Bright Dot

Dark Dot

Light Leakage

Mura

Image Sticking

Dot Defect

Brightness Spot

Dot Defect

Particle

Check Panel

Change Panel

No display

Check Power Board

Check Main board

Check Panel

Change Panel

Change Main board

Change Power

Check Keyboard

Change Keyboard

Check Line Connected
Power board and

Change Wires

Noise

Check Main board

Check Panel

Change Main board

Change Panel

Test

A

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Summary of Contents for AL1511

Page 1: ...0 Acer AL1511 Service Guide ...

Page 2: ...fective following their purchase the 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 Acer is a registered trademark of Acer Corporation Intel is a registered trademark of Intel Corporation Pentium and Pentium II III are trademarks of Intel Co...

Page 3: ...rference 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 recept...

Page 4: ...uring 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 z Do not overload power strips and extension cords Overloading can result in fire or electric shock z Never push any object into the slot on the monitor cabinet It could short circuit parts causing a fire or electric shock Never spill liquids on the monitor z D...

Page 5: ...4 Revision List Revision Release Date Modify Instruction TPV Model T560KVNHKGAGA A00 Nov 11 2005 Initial Release T560KVNHKGADAP ...

Page 6: ...t panel 14 Rear cover 15 Chapter 2 Operating Instructions 16 External Controls 16 Front Panel Controls 17 OSD Menu 18 Hot Key Menu 20 OSD Message 20 LOGO 21 Chapter 3 Machine Disassembly 22 Chapter 4 Troubleshooting 28 Chapter 5 Connector Information 34 Chapter 6 FRU Field Replacement Unit List 35 Exploded Diagram 36 Chapter 7 Schematic Diagram 41 Main Board 41 For T560KVNHKGADAP model 41 For T560...

Page 7: ...Frequency 55 75Hz Dot Clock 80MHZ Max Resolution 1024 x 768 75Hz Plug Play VESA DDC2BTM ON Mode 30W EPA ENERGY STAR OFF Mode 2W Input Connector D Sub 15pin Input Video Signal Analog 0 7Vp p standard 75 OHM Positive Maximum Screen Size Horizontal 304 1mm Vertical 228 1mm Power Source 100 264VAC 47 63HZ Environmental Considerations Operating Temp 0 to 40 C Storage Temp 20 to 60 C Operating Humidity ...

Page 8: ...469 59 940 640 x 480 37 500 75 000 VGA 640 x 480 37 861 72 809 800 x 600 35 156 56 250 800 x 600 37 879 60 317 SVGA 800 x 600 46 875 75 000 1024 x 768 48 363 60 004 1024 x 768 56 476 70 069 VESA XGA 1024 x 768 60 023 75 029 IBM DOS 720 x 400 31 469 70 087 1024 x 768 48 870 60 001 MAC XGA 1024 x 768 60 241 74 927 ...

Page 9: ...gic 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 Monitor Block Diagram Flat Panel and CCFL backlight Main Board Keyboard RS232 Connector For white balance adjustment in factory mode HOST Computer CCFL Drive AC IN 100V 240V Video signal DDC Power board Include adapter inverter board Audio boar...

Page 10: ...ector CN107 EDID EEPROM M24C02 RXD TXD RGB H SYNC V SYNC DB15_SDA DB15_SCL OSD Control Interface Keypad MCU U101 NT68F63L X101 CRYSTAL 2MHz EEPROM M24C16 U403 Scalar NT68523EFG U401 Include MCU ADC OSD D Sub connector CN404 EDID EEPROM M24C02 RXD TXD RGB H SYNC V SYNC DB15_SDA DB15_SCL OSD Control Interface Keypad MCU U402 NT68F633 X401 CRYSTAL 12MHz LCD Interface LVDS CN101 ...

Page 11: ...10 Software Flow Chart 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 ...

Page 12: ...t 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 to ...

Page 13: ...m Description U102 NT68521A XFG Scaler U101 NT68F63L G44L PLU MCU X101 CRYSTAL 12MHz HC 49US A For MCU CN102 WIRE HARNESS CN107 D SUB 15P CN105 WAFER 2 6P 2 0MM R A CN106 PIN HEADER 2 7 R A U103 AT24C16AN 10SU 2 7 U501 A1C1084 33PE U502 AI1117D 1 8 EI ...

Page 14: ...n U401 NT68523EFG Scaler U402 NT68F633 MCU X401 CRYSTAL 12MHz HC 49US A CN404 D SUB 15PIN CONNECTOR U403 M24C16 WMN6TP U405 M24C02 WMN6TP CN101 WAFER 14P 2 0MM DIP CN403 WAFER 16PIN 2 0mm DIP CN701 WAFER 2 6P 2 0MM R A CN702 PIN HEADER 2 7 R A ...

Page 15: ...14 Front Panel 1 Auto Adjust Key Exit 4 MENU ENTER 2 Volume 5 LED 3 Volume 6 Power Key ...

Page 16: ...15 Rear cover Item Description 1 Power cord 2 Signal Cable 3 Audio Cable ...

Page 17: ...these settings the 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 Control Button 1 Auto Adjust Key Exit 4 MENU ENTER 2 Volume 5 LED 3 Volume 6 Power Key Chapter 2 ...

Page 18: ...EY 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 origin...

Page 19: ...r function repeat steps 2 4 Adjusting the picture Main OSD Menu a Outline b The description for control function Main Menu Icon Sub Menu Item Sub Menu Icon Description Contrast Adjusts the contrast between the foreground and background of the screen image Brightness Adjusts the background the screen image Focus Adjust Picture Phase to reduce Horizontal Line noise Clock Adjust picture Clock to redu...

Page 20: ...ge Selection H Position Adjust the horizontal position of the OSD V Position Adjust the vertical position of the OSD OSD Timeout Adjust the OSD timeout Analog Only Model Auto Config N A Auto Adjust the H V Position Focus and Clock of picture Information N A Show the resolution H V frequency and input port of current input timing Reset N A Clear each old status of Auto configuration and set the col...

Page 21: ...en Digital signal input without this OSD Message 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 1 Analog Only Model When the video cable is not connected will show this message This message will be flying 2 Dual Input Model Dual Input Model without this OSD Message...

Page 22: ... This feature is designed to conserve electrical energy by reducing power consumption when there is no video input signal present When there is no video input signal 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 automati...

Page 23: ...components to avoid mismatch when putting back the components 2 Note The monitor surface is susceptible to scratching Therefore lay the monitor on a soft surface when mounting or removing the base 3 Wear gloves The tools for disassemble Process Figures Remark Remove the stand 1 Put the LCD on a flat soft and clean surface 2 Remove the 4 screws Remove the Chapter 3 Screws Driver Special tool Be use...

Page 24: ...s position use the tool like the picture or other card to insert it to disassemble the monitor then the front panel can be removed Remove the key board and rear cover 1 Lay the monitor down 2 After finding out the key board remove the 4 screws The key board and back cover will be aparted Tool For remove the cover ...

Page 25: ...24 1 Remove the screw on the shield Remove the shield 2 Remove the 2 screws for VGA connector Push the shield parallel along the arrowhead direction ...

Page 26: ...25 Remove the main board 1 Remove the 4 screws 2 Disconnect the connectors Remove the audio board Remove the 2 screws ...

Page 27: ...ower board Remove the 5 screws Disconnect the wire harness Disconnect the 2 wire harness connector for power and lamps Remove the main frame 1 Lay the panel left side up 2 Remove the four screws left and right total 4 ...

Page 28: ...27 The end ...

Page 29: ...ssing Line Bright Dot Dark Dot Light Leakage Mura Image Sticking Dot Defect Brightness Spot Dot Defect Particle Check Panel Change Panel No display Check Power Board Check Main board Check Panel Change Panel Change Main board Change Power Check Keyboard Change Keyboard Check Line Connected Power board and Change Wires Noise Check Main board Check Panel Change Main board Change Panel Test A ...

Page 30: ...board Check Panel Change Panel Check LVD Cable Change LVD Cable R G B Display Abnormal Check Single Change Single Check Main board Change Main board Check Panel Change Panel Monitor Shut Down Check Power Change Power board Check Keyboard Change Keyboard Check Main board Change Main board No signal Check Single Change Single Check Main board Change Main board Power on Display Abnormal Check Main bo...

Page 31: ...nge Main board Change Main board Change LVDS Wire LED Off Change Keyboard or Main board or wire Change Keyboard or Main board or wire A Change Wires LED Abnormal LED Dark LED Display Abnormal LED Flicker Abnormal Keyboard Check Wires Check Keyboard Check Main board Abnormal OSD Check Main board Check LVDS Wire Test Next Step Completed ...

Page 32: ... line Check the voltage of C905 Check F901 bridge rectified circuit Check start voltage for the pin3 of IC901 Check R906 R907 IC901 Check the auxiliary voltage is between 10V 16V 1 Check IC902 IC903 2 2 Check Q901 Q902 ZD901 circuit NG OK Check D910 D912 OK OK NG NG NG ...

Page 33: ...V NG OK Change Q201 or Q202 Check the pin1 of U201 have saw tooth wave NG OK Change U201 Check D201 have the output of square wave at short time NG OK Check Q203 Q205 Q207 D201 Check the resonant wave of pin2 pin5 for PT201 NG Check the output of PT201 Check Q209 Q210 C213 Check connecter lamp OK NG Change PT201 OK ...

Page 34: ...K 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 ...

Page 35: ... board 1 5 6 10 11 15 15 Pin Color Display Signal Cable D sub Pin No Description Pi N No Description 1 Red 9 5V 2 Green 10 Logic Ground 3 Blue 11 Monitor Ground 4 Monitor Ground 12 DDC Serial Data 5 DDC Return 13 H Sync 6 R Ground 14 V Sync 7 G Ground 15 DDC Serial Clock 8 B Ground Chapter 5 ...

Page 36: ...sons a part number change is made it will not be noted on 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 to return ...

Page 37: ...36 Exploded Diagram ...

Page 38: ...37 Note above picture show the description of the following component No Picture Description 1 Front panel 2 Shield 3 Main Frame 4 Panel 5 Rear cover ...

Page 39: ...38 6 Hinge 7 Stand base 8 Main board 9 PWPC board 10 Audio board 11 Key board ...

Page 40: ...39 12 Mylar 13 Speakers 14 Signal cable 15 Audio cable option 16 Power code 17 Inverter board cable 18 LVDS cable ...

Page 41: ...40 19 Main frame screws 20 Rear cover screws 21 Ground rush screw 22 Hinge cover screws 23 D sub screws 24 Main Power Audio Board screws ...

Page 42: ...CO PD3 PWM6 HALFO PD4 PWM7 HALFI PD5 CLMPO PA0 PWM8 PB4 ISCL PB5 ISDA PB6 DSCL PB7 DSDA PA1 PWM9 PA2 PWM10 NC NC 12M_OSC R119 4 7k DDC_SCL R133 100 DGND AUTO R205 100 C113 220p MENU R193 4 7k R134 1k R118 4 7k R120 4 7k 040418 update C112 from 0 1u to 0 22u 5V AUTO C180 100p R137 100 TO RS232 MCU_VDD SCL MCU_VDD DGND D101 BAT54C 1 3 2 OUT R R201 7 5k POWER_KEY R117 4 7k MCU_VS R204 100 C103 0 1u V...

Page 43: ...PORT B BIT BYTE SWAP T1P ARSGN0 T1M ARSGP0 T5P ARSRN1 T3P ARSGN3 TCLK1M ARSGP2 TCLK2P ARSRN3 T1M ARSGP0 T2M ARSGP1 BRSBN1 T4M ARSRP0 TCLK2M ARSRP3 T6M ARSRP2 T3P ARSGN3 DGND T2P ARSGN1 BRSCLK_N BRSGN2 T2M ARSGP1 PANEL CONNECTER 0 1 715L1365 3 3 5 Title Size Document Number Rev Date Sheet of T7M ARSCLK_P T0P ARSBN3 DGND DGND T2P ARSGN1 GPO6 GATE_OE BRSBP2 BRSGP1 T2P ARSGN1 T0P ARSBN3 T6M ARSRP2 TCL...

Page 44: ...79 100u 16V 3 3V 3 3V Q102 MMBT3904 1 3 2 AUDIO CONNECTOR 2 0mm 12V DGND 5V C165 220p 5V C157 220p DGND 5V DGND DGND DGND CN106 7 2PIN 2 0mm 1 3 5 7 9 11 13 2 4 6 8 10 12 14 L114 C169 0 1u L115 5V 3 3V C156 0 1u 3 3V L113 C162 0 1u R207 10k L115 NC B1206 600 CONNECTOR FOR POWER INVERTER BOARD 2 0 mm C160 100u 16V L114 B1206 600 12V PANEL_VDD PWR1_EN 5V DGND C167 100u 16V U104 USE SI9933 OR SI9953 ...

Page 45: ...NDA GIN ADC_GVAA ADC_GGNDA GIN ADC_BVAA ADC_BGNDA SOGI VSYNCI CGND OSCI OSCO ADC_VAA DISP_HS GPO1 SPA DISP_DE SPB DISP_VS DGND DPLL_VDD CVDD DVDD IRQn BB0 BRSBP 0 DVDD RSTn SDA SCL CVDD CGND Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 YUV_CLK D_CLK PLL_GND PLL_VDD VCON CZ PLL_VAA PLL_GNDA DPLL_GND TESTP DGND DGND DGND BB1 BRSBN 0 BB3 BRSBN 1 BB2 BRSBP 1 BB5 BRSBN 2 BB4 BRSBP 2 BB7 BRSBN 3 BB6 BRSBP 3 GB7 BRSGN 3 GB6 ...

Page 46: ... Rev Date Sheet of D105 BAV99 1 3 2 R175 75 R_IN DB_R R178 100 L109 B0805 0 DGND VGA_HS B_IN U105 74F14 74LCX14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 D0 Q0 D1 Q1 D2 Q2 GND Q3 D3 Q4 D4 Q5 D5 VCC VSI ADC_VAA R183 100 ADC_GND DB_B R168 100 R170 75 D114 5 6V C174 22p MCU_HS ADC_GND GVS ADC_VAA GVS D113 5 6V DGND DGND DB_R R171 100 DB_G DB_B DDC_SDA D106 BAV99 1 3 2 DDC_VDD G_IN VGA_CONN R192 NC C173 22p AD...

Page 47: ... 24C02_WP LEDG DGND R414 4 7k VOLUME C412 1n R422 100 R404 4 7k CN402 NC 4PIN 2 0mm 1 2 3 4 MUTE C411 1n TXD R420 4 7k R412 100 5V LEDB LEDG R421 1M R429 NC X401 12MHz 5V DDC_SDA AUTO_KEY CN401 NC 3PIN 2 0mm 1 2 3 R434 1k C417 1n C407 100p D419 BAT54C KEYPAD CONNECTOR 2 0nn C402 47u 16V DGND RSTN R410 100 DGND DVI_CABLE LEFT U403 AT24C16 1 2 3 4 5 6 7 8 A0 A1 A2 GND SDA SCLK WP VCC MCU_VDD R402 1k...

Page 48: ...TCLK1M TCLK1P T3M T3P DGND CVDD DISP_VS GPO0 DISP_HS DISP_DE T4M T4P T5M T5P T6M T6P TCLK2M TCLK2P T7M T7P DVDD NC NC NC NC NC NC NC IRQn RSTn SDA SCL REFCKO GPO6 D CGND CVDD IN_HSO GPO5 IN_VSO GPO4 AD1 GPO3 AD0 GPO2 GPO1 DVDD NC NC NC NC NC NC NC NC DGND NC NC NC NC C445 10n BIN0 3 3V C420 10u 10V 12M_OSC GIN0 DGND G_IN0 R_IN0 RXC C448 10n 1 8V DGND C424 0 1u TCLK1M DGND C419 100u 16V DVI_AVCC RS...

Page 49: ... 13 15 17 19 21 23 2 4 6 8 10 12 14 16 18 20 22 24 TCLK2M PANEL_VDD T1M DGND T3P T3M T0M T4P T0P T5M T1P T2P TCLK1P TCLK2P PANEL CONNECTER 0 2 715L1699 B 3 5 Wednesday August 03 2005 Title Size Document Number Rev Date Sheet of T7M T7P DGND T4M T6P T5P ...

Page 50: ...ONNECTOR 2 0 mm PANEL_PWR2 C716 0 1u OUT L C712 1n C715 47u 16V MUTE R706 10k POWER 0 2 715L1699 B A4 4 5 Wednesday August 03 2005 Title Size Document Number Rev Date Sheet of DGND 3 3V D702 GS1D C705 100u 16V C710 0 1u Q701 AO3401 1 3 2 U701 AIC1084 33 3 2 1 4 VIN VOUT GND CASE DGND CN702 7x2PIN 2 0mm 1 3 5 7 9 11 13 2 4 6 8 10 12 14 12V STANDBY FB702 NC B1206 600 DGND R705 10k OUT R FB701 B1206 ...

Page 51: ...C4 C5 TX2 TX2 TX2 4 Shld TX4 TX4 DDC CLK DDC DATA A VS TX1 TX1 TX1 3 Shld TX3 TX3 5V GND HP Detect TX0 TX0 TX0 5 Shld TX5 TX5 TXC Shld TXC TXC SHELL1 SHELL2 A Red A Blue A Gm A Hs A RTN ZD402 5 6V 1 2 RXC DGND DVI_CABLE ZD401 5 6V 1 2 R_IN0 R460 100 DGND VGA INPUT 0 2 715L1699 B 5 5 Wednesday August 03 2005 Title Size Document Number Rev Date Sheet of DDC_VDD C450 22p DGND B_IN0 RX0 DVI_5V G VGA_5...

Page 52: ...51 Power Board ...

Page 53: ...52 ...

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