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Acer Aspire 7520 Series, Service Manual

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Chapter 4

87

Intermittent Problems

Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a
hardware defect, such as: cosmic radiation, electrostatic discharge, or software errors. FRU replacement
should be considered only when a recurring problem exists.

When analyzing an intermittent problem, do the following:

1.

Run the advanced diagnostic test for the system board in loop mode at least 10 times.

2.

If no error is detected, do not replace any FRU.

3.

If any error is detected, replace the FRU. Rerun the test to verify that there are no more errors.

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Summary of Contents for Aspire 7520 Series

Page 1: ...Aspire 7520 7520G 7220 7220G Service Guide PRINTED IN TAIWAN Service guide files and updates are available on the AIPG CSD web for more information please refer to http csd acer com tw...

Page 2: ...II Revision History Please refer to the table below for the updates made on Aspire Poyang service guide Date Chapter Updates...

Page 3: ...ect to the contents hereof and specifically disclaims any warranties of merchantability or fitness for any particular purpose Any Acer Incorporated software described in this manual is sold or license...

Page 4: ...bits and pieces of additional information related to the current topic WARNING Alerts you to any damage that might result from doing or not doing specific actions CAUTION Gives precautionary measures...

Page 5: ...NOT be covered in this generic service guide In such cases please contact your regional offices or the responsible personnel channel to provide you with further technical details 2 Please note WHEN OR...

Page 6: ...VI...

Page 7: ...n dual band tri mode 802 11a b g n Wi Fi CERTIFIEDTM solution supporting Acer SignalUpTM wireless technology T Core logic Intel 965PM 965GM ICH8M north bridge south bridge T Up to 2GB of DDR2 533 677...

Page 8: ...rbiCamTM and optional Acer Bluetooth VoIP phone T Acer OrbiCamTM 0 3 megapixel CMOS camera featuring t 30 degree ergonomic rotation t Acer VisageOnTM technology t Acer PrimaLiteTM technology T Modem 5...

Page 9: ...Chapter 1 3 Environment T Temperature t Operating 5 C to 35 C t Non operating 20 C to 65 C T Humidity non condensing t Operating 20 80 t Non operating 20 80...

Page 10: ...4 Chapter 1 System Block Diagram...

Page 11: ...or 12 LED1 Power Suspend LED 5 U5 South Bridge ICH8M 13 LED2 Battery Charge Discharge LED 6 JP6 Internal Track Pad Connector 14 JP13 Mainboard to Audio Board Connector 7 JP5 Internal Keyboard Connecto...

Page 12: ...Card TV Tuner Socket 20 JP28 DDRII Memory Socket 8 JP17 MDC Connector 21 JP29 DDRII Memory Socket 9 JP22 CPU Socket 22 JP31 Headphone SPDIF Jack 10 JP16 Internal Fan Connector 23 JP32 Mic in Jack 11 J...

Page 13: ...dicator Enables disables the wireless function Indicates the status of wireless LAN communication 4 Easy launch buttons Buttons for launching frequently used programs 5 Bluetooth communication button...

Page 14: ...and right speakers deliver stereo audio output 15 Palmrest Comfortable support area for your hands when you use the computer Icon Item Description 1 Power indicator Indicates the computer s power stat...

Page 15: ...IEEE 1394 devices 8 Volume control Increases and decreases the volume 9 5 in 1 card reader Accepts Secure Digital SD MultiMediaCard MMC Memory Stick MS Memory Stick PRO MS PRO xD Picture Card xD 10 P...

Page 16: ...cal disk access indicator Lights up when the optical drive is active 5 Optical drive eject button Ejects the optical disk from the drive 6 Emergency eject hole Ejects the optical drive tray when the c...

Page 17: ...scription 1 Battery bay Houses the computer s battery pack 2 Battery release latch Releases the battery for removal 3 Battery lock Locks the battery in position 4 Hard disk bay Houses the computer s h...

Page 18: ...rowser buttons are pre set to email and Internet programs but can be reset by users To set the Web browser and mail buttons run the Launch Manager Icon Function Description Power Lights up when the co...

Page 19: ...ovements hence the lighter the touch the better the response Tapping too hard will not increase the touchpad s responsiveness Launch Button Default application Acer Empowering Technology user programm...

Page 20: ...ercase Num lock Fn F11 When Num Lock is on the embedded keypad is in numeric mode The keys function as a calculator complete with the arithmetic operators and Use this mode when you need to do a lot o...

Page 21: ...other keys to provide a variety of function Tab Activates next taskbar button E Opens the My Computer window F1 Opens Help and Support F Opens the Search All Files dialog box R Opens the Run dialog b...

Page 22: ...aq12 htm for more information Fn F5 Display toggle Switches display output between the display screen external monitor if connected and both Fn F6 Screen blank Turns the display screen backlight off t...

Page 23: ...en a text editor or word processor 2 Either directly press the key at the bottom right of the keyboard or hold Shift and then press the 4 key at the upper center of the keyboard NOTE This function var...

Page 24: ...gs For more information press the key to launch the Empowering Technology toolbar then click on the appropriate utility and select the Help or Tutorial function Empowering Technology password Before u...

Page 25: ...to the appropriate profile when you move from one location to another Settings stored include network connection settings IP and DNS settings wireless AP details etc as well as default printer settin...

Page 26: ...luetooth CardBus FireWire 1394 Wired LAN and Optical Device if supported DC Mode Battery mode There are three pre defined profiles Balanced Power Saver and High Performance You can also define the pow...

Page 27: ...l power options click More Power option Acer ePresentation Management Acer ePresentation Management lets you project your computer s display to an external device or project using the hot key Fn F5 If...

Page 28: ...tlook The Acer eDataSecurity Management setup wizard will prompt you for a supervisor password and default encryption This encryption will be used to encrypt files by default or you can choose to ente...

Page 29: ...Chapter 1 23...

Page 30: ...lugged into the system T Optical drive devices includes any kind of CD ROM or DVD ROM drives T Floppy disk drives 3 5 inch disks only T Interfaces includes serial ports parallel port infrared IR and B...

Page 31: ...set recovery point T Back up to CD DVD T Image data recovery tools T Recover from a hidden partition factory defaults T Recover from the HDD most recent user defined recovery point T Recover from CD D...

Page 32: ...s Furthermore Acer eSettings Management enables you to optimize your Windows operating system so your computer runs faster smoother and better Acer eSettings Management also T Provides a simple graphi...

Page 33: ...e resolution click the displayed resolution button to select the desired resolution Using the Acer OrbiCam as webcam The Acer OrbiCam is automatically selected as the capture device of any instant mes...

Page 34: ...Vista is a handy utility that offers four pre defined display settings so you can view multiple windows on the same screen To access this function please go to Start All Programs and click on Acer Gri...

Page 35: ...is set to the manufacturer s recommended value Launch Manager Launch Manager allows you to set the four easy launch buttons see their locations mentioned in Easy Launch Buttons You can access the Laun...

Page 36: ...6 86 3700 39 88 88 3450 36 5 91 91 3150 34 5 95 95 2800 31 BIOS Item Specification BIOS vendor InsydeH2O BIOS Version BIOS ROM type Flash ROM BIOS ROM size 512KB BIOS package 32 pin PLCC Supported pro...

Page 37: ...can install memory modules in any combinations as long as they match the above specifications Memory Combinations Slot 1 Slot 2 Total Memory 0MB 128MB 128MB 0MB 256MB 256MB 0MB 512MB 512MB 0MB 1024MB...

Page 38: ...or location Right side Bluetooth Interface Item Specification Chipset Foxconn Bluetooth 2 0 EDR Data throughput 723 bps full speed data rate Protocol Bluetooth 1 1 Upgradeable to Bluetooth 1 2 when SI...

Page 39: ...12 7mm Tray DL 8X UJ 850 PHILIPS Super Multi Drive 12 7mm Tray DL 8X DS 8A1P HLDS Super Multi Drive 12 7mm Tray LabelFlash 8X GSA T20N SONY Super Multi Drive 12 7mm Tray DL 8X AD 7530A TOSHIBA HD DVD...

Page 40: ...1 USB Port Item Specification Chipset Built in ICH8M USB Compliancy Level 2 0 OHCI USB 1 1 and USB 2 0 Host controller Number of USB port 4 Location One on the left side three on the rear side Serial...

Page 41: ...LS Battery Type Li ion Pack capacity 4000 mAH or 4800 mAH Number of battery cell 6 cell or 8cell Package configuration 9 cells in series 2 series in parallel Normal voltage 14 8V Charge voltage 16 8 0...

Page 42: ...ght Left Vertical Upper Lower 40 40 10 30 45 45 15 35 40 40 20 40 40 40 20 40 Temperature Range C Operating Storage shipping 0 to 50 20 to 60 0 to 50 25 to 60 0 to 50 20 to 60 0 to 50 20 to 60 LCD Inv...

Page 43: ...RAM S3 CPU set power down VGA Suspend PCMCIA Suspend Audio Power Down Hard Disk Power Down CD ROM Power Down Super I O Low Power mode Save to Disk S4 Also called Hibernation Mode System saves all sys...

Page 44: ...38 Chapter 1...

Page 45: ...ng BIOS Setup Utility please set the parameter to enabled Press F12 during POST to enter multi boot menu In this menu user can change boot device without entering BIOS SETUP Utility InsydeH20 Setup Ut...

Page 46: ...em T Press while you are in any of the menu options to go to the Exit menu T In any menu you can load default settings by pressing t You can also press u to save any changes made and exit the BIOS Set...

Page 47: ...VGA firmware version of the system Serial Number This field displays the serial number of this unit Asset Tag Number This field displays the asset tag number of the system Product Name This field show...

Page 48: ...tem Specific Help This is the help for the hour field Valid range is from 0 to 23 INCREAE REDUCE F5 F6 F1 F5 F6 F9 Se tup Defaults Esc Enter Se lect Sub Menu F10 Sa ve and Exit System Time 19 03 49 Sy...

Page 49: ...ory This field reports the total memory size in the system Video Memory Shows the Video memory size Quiet Boot Determines if Customer Logo will be displayed or not shows Summary Screen is disabled or...

Page 50: ...m Specific Help Supervisor Password Is User Password Is Clear Set Supervisor Password Set User Password Password on Boot Enabled Install or Change the password F1 Help Select Item F5 F6 Change Values...

Page 51: ...to save the changes and exit the BIOS Setup Utility Parameter Description Option Supervisor Password is Shows the setting of the Supervisor password Clear or Set User Password is Shows the setting of...

Page 52: ...to highlight the Set Supervisor Password parameter and press the e key The Set Supervisor Password box appears 2 Type the current password in the Enter Current Password field and press e 3 Type a pas...

Page 53: ...Chapter 2 47 If the new password and confirm new password strings do not match the screen will display the following message...

Page 54: ...ry Day or By Day of Month Crestline PM Support Enables disables Calistoga Enhanced Power Management mode Enabled or Disabled POPUP Support Enabled or Disabled POPDOWN Support Enabled or Disabled DeepC...

Page 55: ...Information Main Item Specific Help Use or to select a device then press F5 to move it up the list or F6 to move it down the list Press Esc to escape the menu F1 F5 F6 F9 Setup Defaults Esc Enter Sel...

Page 56: ...a to CMOS Load Setup Defaults Load default values for all SETUP item Discard Changes Load previous values from CMOS for all SETUP items Save Changes Save Setup Data to CMOS InsydeH20 Setup Utility Rev...

Page 57: ...ry Diskette before you use the Phlash utility NOTE Do not install memory related drivers XMS EMS DPMI when you use the Phlash NOTE Please use the AC adapter power supply when you run the Phlash utilit...

Page 58: ...52 Chapter 2...

Page 59: ...preventing electrostatic discharge T Small Philips screw driver T Philips screwdriver T Plastic flat head screw driver T Tweezers NOTE The screws for the different components vary in size During the...

Page 60: ...Begin Before proceeding with the disassembly procedure make sure that you do the following 1 Turn off the power to the system and all peripherals 2 Unplug the AC adapter and all power and signal cable...

Page 61: ...art Thermal Door HDD Door LCD Module Middle Cover HDD Bracket Keyboard Battery Pack F 2 D 5 F 1 B 4 C 2 LCD hinges to logic D 2 LCD hinges to logic C 2 on bottom side C 8 upper case assembly to lower...

Page 62: ...2 5 15 NL 86 TAVV5 004 E SCREW M2 2 2 86 TAVV5 005 F SCREW M2 3 NL 86 TAVV5 006 G SCREW M2 4 86 TAVV5 007 H SCREW M3 4 NL 86 TAVV5 008 I SCREW D SUB 4 X40 1 5 NI NL 86 TAVV5 009 LCD Module LCD Inverte...

Page 63: ...Chapter 3 57 Removing the Battery Pack 1 Unlock the battery lock move the battery lock to the unlock position as shown 2 Slide the battery release latch then remove the battery...

Page 64: ...astening the HDD cover 2 Detach the HDD cover from the main unit 3 Remove the screw fastening the HDD module 4 Pull the tab to remove the HDD module in the direction of the arrow Removing the Memory 1...

Page 65: ...n take out the wireless LAN card from the main unit 4 Remove the screw fastening the modem card and detach the modem card from the main board 5 Disconnect the RJ 11 cable and remove the modem card 6 D...

Page 66: ...thermal module 4 Then detach the CPU thermal module as shown 5 Remove the four spring screws holding the VGA thermal module 6 Then detach the VGA thermal module as shown 7 Remove the two screws fasten...

Page 67: ...side and remove it 4 Gently pull up the keyboard to release it from the four snaps as shown 5 Turn over the keyboard as the image shows Then disconnect the keyboard cable from the main board 6 Remove...

Page 68: ...62 Chapter 3 9 Detach the LCD module from the main unit...

Page 69: ...le outwards and gently pull it out as shown 3 Press and release the PC dummy card from the PC slot as shown 4 Then press the release the memory dummy card from the 5 in 1 card reader slot as shown 5 R...

Page 70: ...and its cable from the lower case 3 Then detach the USB cable from the USB board 4 Disconnect the Bluetooth cable from the main board 5 Take out the Bluetooth module and its cable from the lower case...

Page 71: ...the audio board to the lower case 14 Disconnect the audio board cable from the motherboard 15 Disconnect the subwoofer cable from the audio board 16 Remove the audio board from the lower case unit 17...

Page 72: ...66 Chapter 3 20 Remove the three screws fastening the subwoofer to the lower case 21 Remove the subwoofer from the lower case as shown...

Page 73: ...s fastening the button board 3 Detach the button board with FFC from the upper case as shown 4 Remove the two screws fastening the LED board 5 Detach the LED board with FFC from the upper case as show...

Page 74: ...crews holding the LCD and the one screw holding the inverter board to the LCD panel 5 Detach the two inverter cable connectors from the inverter board 6 Detach the CCD cable connector from the CCD boa...

Page 75: ...3 69 10 Remove the four screws fastening the left LCD bracket and detach it 11 Remove the four screws fastening the right LCD bracket and detach it 12 Disconnect the LCD cable from the rear side of t...

Page 76: ...emove the three screws fastening the HDD board 2 Remove the HDD board 3 Turn over the HDD module and remove the eight screws fastening the HDD bracket 4 Remove the Disassembling the ODD Module 1 Remov...

Page 77: ...which page to go to Symptoms Verified Go To Power failure The power indicator does not go on or stay on Power System Check on page 73 POST does not complete No beep or error codes are indicated Power...

Page 78: ...abel can cause damage to the drive or can cause the drive to fail Do the following to select the test device 1 Boot from the diagnostics diskette and start the diagnostics program 2 See if CD ROM Test...

Page 79: ...s in the message window NOTE Make sure that the DIMM is fully installed into the connector A loose connection can cause an error Power System Check To verify the symptom of the problem power on the co...

Page 80: ...following T Replace the System board T If the problem is not corrected see Undetermined Problems on page 88 T If the voltage is not correct go to the next step NOTE An audible noise from the power ad...

Page 81: ...attery pack that has less than 50 of the total power remaining when installed in the computer If the battery status indicator does not light up remove the battery pack and let it return to room temper...

Page 82: ...xt possible FRU to be replaced when servicing a computer If the symptom is not listed see Undetermined Problems on page 88 The following lists the error messages that the BIOS displays on the screen a...

Page 83: ...ult Settings in BIOS Setup Utility Hard disk drive System board Stuck Key see Keyboard or Auxiliary Input Device Check on page 72 Keyboard error see Keyboard or Auxiliary Input Device Check on page 72...

Page 84: ...Setup Utility System cache error Cache disabled System board CPU ID System board DMA Test Failed DIMM System board Software NMI Failed DIMM System board Fail Safe Timer NMI Failed DIMM System board De...

Page 85: ...ource battery pack and power adapter See Power System Check on page 73 Reconnect the LCD connector Hard disk drive LCD inverter ID LCD cable LCD Inverter LCD System board No beep power on indicator tu...

Page 86: ...fore memory autosize 18h 8254 timer initialization 1Ah 8237 DMA controller initialization 1Ch Reset Programmable Interrupt Controller 20h 1 3 1 1 Test DRAM refresh 22h 1 3 1 3 Test 8742 Keyboard Contr...

Page 87: ...Enable external and CPU caches 69h Setup System Management Mode SMM area 6Ah Display external L2 cache size 6Bh Load custom defaults optional 6Ch Display shadow area message 6Eh Display possible high...

Page 88: ...ey lock A4h Initialize Typematic rate A8h Erase F2 prompt AAh Scan for F2 key stroke ACh Enter SETUP AEh Clear Boot flag B0h Check for errors B2h POST done prepare to boot operating system B4h 1 One s...

Page 89: ...ge Segment E9h Initialize Multi Processor EAh Initialize OEM special code EBh Initialize PIC and DMA ECh Initialize Memory type EDh Initialize Memory size EEh Shadow Boot Block EFh System memory test...

Page 90: ...displayed LCD inverter ID LCD inverter LCD cable LCD System board Indicator Related Symptoms Symptom Error Action in Sequence Indicator incorrectly remains off or on but system runs correctly Reconne...

Page 91: ...sound Speaker System board Power Management Related Symptoms Symptom Error Action in Sequence The system will not enter hibernation See Save to Disk S4 on page 45 Keyboard if control is from the keyb...

Page 92: ...LCD CRT Both display switching System board USB does not work correctly System board Print problems Ensure the Parallel Port in the Onboard Devices Configuration of BIOS Setup Utility is set to Enabl...

Page 93: ...discharge or software errors FRU replacement should be considered only when a recurring problem exists When analyzing an intermittent problem do the following 1 Run the advanced diagnostic test for th...

Page 94: ...perating correctly See Power System Check on page 73 1 Power off the computer 2 Visually check them for damage If any problems are found replace the FRU 3 Remove or disconnect all of the following dev...

Page 95: ...D 5 U5 South Bridge ICH8M 13 LED2 Battery Charge Discharge LED 6 JP6 Internal Track Pad Connector 14 JP13 Mainboard to Audio Board Connector 7 JP5 Internal Keyboard Connector 15 JP11 Mainboard to USB...

Page 96: ...Card TV Tuner Socket 20 JP28 DDRII Memory Socket 8 JP17 MDC Connector 21 JP29 DDRII Memory Socket 9 JP22 CPU Socket 22 JP31 Headphone SPDIF Jack 10 JP16 Internal Fan Connector 23 JP32 Mic in Jack 11...

Page 97: ...ade 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 Serv...

Page 98: ...7 01K 0FA BT 00604 018 BATTERY LI ION 8CELLS 4 8MAH PANASONIC PA 4S2P 4 8AH 7 01K 0FA BT 00805 011 BATTERY LI ION 8CELLS 4 8MAH SANYO SA 4S2P 4 8AH 7 01K 0FA BT 00803 024 BATTERY LI ION 8CELLS 4 8MAH...

Page 99: ...AHJ02 002 LED BOARD W CABLE 17 55 AHJ02 003 USB BOARD FOR TV 17 55 AHJ02 004 USB BOARD FOR W O TV 55 AHJ02 005 RF BOARD FOR DTV 55 AHJ02 006 ODD BOARD 17 55 AHJ02 007 HDD BOARD 17 55 AHJ02 008 VGA BO...

Page 100: ...PIN 27 TAVV5 006 POWER CORD ITALIAN 3 PIN 27 TAVV5 007 POWER CORD DENMARK 3 PIN 27 TAVV5 008 POWER CORD JP 3 PIN 27 TAVV5 009 POWER CORD SOUTH AFRICA 3 PIN 27 TAVV5 010 POWER CORD KOREA 3 PIN 27 TAVV...

Page 101: ...A M0 UFCPGA KC 71001 DTP INTEL CPU MEROM DUAL CORE T5450 1 66G IC LF80537GF0282M QWNW M0 PGA 478P KC 54501 DTP COMBO MODULE DVD CDRW 24X COMBO MODULE 6M AHJ02 002 DVD CDRW COMBP DRIVE HLDS GCC T10N VI...

Page 102: ...M WD WD800BEVS 22RST0 ML80 SATA LF F W 04 01G04 KH 08008 033 HDD SATA 120G 5400RPM HGST HTS541612J9SA00 SURUGA B LF F W C70P KH 12007 010 HDD SATA 120G 5400RPM SEAGATE ST9120822AS SATA 8MB LF 3 ALD KH...

Page 103: ...T00 164 KEYBOARD 17KB FV2 106KS WHITE DUTCH KB INT00 163 KEYBOARD 17KB FV2 106KS WHITE FRENCH KB INT00 161 KEYBOARD 17KB FV2 106KS WHITE GERMAN KB INT00 160 KEYBOARD 17KB FV2 105KS WHITE GREEK KB INT0...

Page 104: ...AUO B170PW03 V4 200nits 16ms LK 17105 005 LCD 17 WXGA GLARE CMO N170C2 L02 10ms 200nits LK 1700D 009 LCD 17 WXGA GLARE LPL LP171WP4 TLB1 16ms 200nits LK 17008 025 LCD 17 WXGA GLARE SAMSUNG LTN170X2 L0...

Page 105: ...RB GM965 UMA W CARD READER_EXPRESS CARD W O CPU MEMORY MB AHE02 001 MAINBOARB PM965 DISCRETE W CARD READER_EXPRESS CARD W O CPU MEMORY MB AHH02 001 MEMORY MEMORY 512MB DDRII 667 NANYA NT512T64UH8B0FN...

Page 106: ...THERMAL RUBBER FOOT 47 AHJ02 006 THERMAL PAD 47 AHJ02 007 NAMEPLATE AS7720 40 AHJ02 001 LCD SCREW PAD 17 47 AHJ02 001 LCD SIDE RUBBER 17 47 AHJ02 002 LCD FRONT RUBBER 17 47 AHJ02 003 SCREW LIST SCREW...

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