Acer Travelmate 2470 Service Guide
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Chapter 493 D2h Unknown interrupt CodeBeeps E0h Initialize the chipset E1h Initialize the bridge E2h Initialize the CPU E3h Initialize the system timer E4h Initialize system I/O E5h Check force recovery boot E6h Checksum BIOS ROM E7h Go to BIOS E8h Set Huge 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 F0h Initialize interrupt vectors F1h Initialize Run Time Clock F2h Initialize video F3h Initialize System Management Mode F4h 1 Output one beep before boot F5h Boot to Mini DOS F6h Clear Huge Segment F7h Boot to Full DOS CodeBeepsPOST Routine Description
94Chapter 4 Index of Symptom-to-FRU Error Message LCD-Related Symptoms Symptom / ErrorAction in Sequence LCD backlight doesnt work LCD is too dark LCD brightness cannot be adjusted LCD contrast cannot be adjustedEnter BIOS Utility to execute “Load Setup Default Settings”, then reboot system. Reconnect the LCD connectors. Keyboard (if contrast and brightness function key doesnt work). LCD inverter ID LCD cable LCD inverter LCD System board Unreadable LCD screen Missing pels in characters Abnormal screen Wrong color displayedReconnect the LCD connector LCD inverter ID LCD cable LCD inverter LCD System board LCD has extra horizontal or vertical lines displayed.LCD inverter ID LCD inverter LCD cable LCD System board Indicator-Related Symptoms Symptom / ErrorAction in Sequence Indicator incorrectly remains off or on, but system runs correctlyReconnect the inverter board Inverter board System board Power-Related Symptoms Symptom / ErrorAction in Sequence Power shuts down during operation Power source (battery pack and power adapter). See “Power System Check” on page 83. Battery pack Power adapter Hard drive & battery connection board System board The system doesn’t power-on. Power source (battery pack and power adapter). See “Power System Check” on page 83. Battery pack Power adapter Hard drive & battery connection board System board The system doesn’t power-off. Power source (battery pack and power adapter). See “Power System Check” on page 83. Hold and press the power switch for more than 4 seconds. System board
Chapter 495 Battery can’t be charged See “Check the Battery Pack” on page 85. Battery pack System board PCMCIA-Related Symptoms Symptom / ErrorAction in Sequence System cannot detect the PC Card (PCMCIA) PCMCIA slot assembly System board PCMCIA slot pin is damaged. PCMCIA slot assembly Memory-Related Symptoms Symptom / ErrorAction in Sequence Memory count (size) appears different from actual size.Enter BIOS Setup Utility to execute “Load Default Settings, then reboot system. DIMM System board Speaker-Related Symptoms Symptom / ErrorAction in Sequence In Windows, multimedia programs, no sound comes from the computer. Audio driver Speaker System board Internal speakers make noise or emit no sound. Speaker System board Power Management-Related Symptoms Symptom / ErrorAction in Sequence The system will not enter hibernation See “Save to Disk (S4)” on page 47. Keyboard (if control is from the keyboard) Hard disk drive System board The system doesnt enter hibernation mode and four short beeps every minute.Press Fn+ oand see if the computer enters hibernation mode. Touchpad Keyboard Hard disk connection board Hard disk drive System board The system doesn’t enter standby mode after closing the LCDSee “Save to Disk (S4)” on page 47. LCD cover switch System board The system doesnt resume from hibernation mode.See “Save to Disk (S4)” on page 47. Hard disk connection board Hard disk drive System board The system doesnt resume from standby mode after opening the LCD.See “Save to Disk (S4)” on page 47. LCD cover switch System board Power-Related Symptoms Symptom / ErrorAction in Sequence
96Chapter 4 NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined Problems” on page 98. Battery fuel gauge in Windows doesn’t go higher than 90%. Remove battery pack and let it cool for 2 hours. Refresh battery (continue use battery until power off, then charge battery). Battery pack System board System hangs intermittently. Reconnect hard disk/CD-ROM drives. Hard disk connection board System board Peripheral-Related Symptoms Symptom / ErrorAction in Sequence System configuration does not match the installed devices. Enter BIOS Setup Utility to execute “Load Default Settings”, then reboot system. Reconnect hard disk/CD-ROM/diskette drives. External display does not work correctly. Press Fn+F5, 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 Enabled. Onboard Devices Configuration Run printer self-test. Printer driver Printer cable Printer System Board Serial or parallel port device problems. Ensure the “Serial Port” in the Devices Configuration” of BIOS Setup Utility is set to Enabled. Device driver Device cable Device System board Keyboard/Touchpad-Related Symptoms Symptom / ErrorAction in Sequence Keyboard (one or more keys) does not work. Reconnect the keyboard cable. Keyboard System board Touchpad does not work. Reconnect touchpad cable. Touchpad board System board Modem-Related Symptoms Symptom / ErrorAction in Sequence Internal modem does not work correctly. Modem phone port modem combo board System board Power Management-Related Symptoms Symptom / ErrorAction in Sequence
Chapter 497 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.
98Chapter 4 Undetermined Problems The diagnostic problems does not identify which adapter or device failed, which installed devices are incorrect, whether a short circuit is suspected, or whether the system is inoperative. Follow these procedures to isolate the failing FRU (do not isolate non-defective FRU). NOTE: Verify that all attached devices are supported by the computer. NOTE: Verify that the power supply being used at the time of the failure is operating correctly. (See “Power System Check” on page 83.): 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 devices: TNon-Acer devices TPrinter, mouse, and other external devices TBattery pack THard disk drive TDIMM TCD-ROM/Diskette drive Module TPC Cards 4.Power-on the computer. 5.Determine if the problem has changed. 6.If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU. 7.If the problem remains, replace the following FRU one at a time. Do not replace a non-defective FRU: TSystem board TLCD assembly
Chapter 599 Top View 1 CVR1 LID switch 8 BTBTN1 Bluetooth launch switch 2 MIC1 Microphone cable connector 9 SPK1 Speaker set cable 3 LCD1 LCD cable connector 10 BT1Bluetooth module cable connector 4 U38 Cardbus controller (ENE CB-1410) 11 LEDB1 LED FFC connector 5 U43 LAN controller (Realtek RTL8100CL)12 TAPD1 Touchpad cable connector 6 N/A Card reader controller (Ricoh R5C832)13 KB1 Keyboard cable connector 7 WLBTN1 Wireless launch switch Jumper and Connector Locations Chapter 5
100Chapter 5 Bottom View NOTE: This is engineering sample. The image above may not be exactly the same as the real main board you get. 1 DCIN1 DC-in jack 14 USB3 USB port 2 CRT1 External display port 15 U67 Audio codec (Reltek ALC833) 3 N/A Modem cable connector 16 LIN1 Line-in jack 4 MDC1 Modem board connector 17 MIC2 Microphone jack 5 BAT1 Battery connector 18 LOUT1 Headphone/speaker/line-out jack 6 CDROM1 ODD module connector 19 HDD1 HDD module connector 7 FAN1 System fan connector 20- 21USB1 USB ports 8 DM2 DIMM 2 socket 22 U58 CPU socket 9 DM1 DIMM 1 socket 23 U56 North Bridge 10 RTC1 RTC battery 24 U53 VGA controller 11 CN2 Card reader board connector 25 TRING1 Modem jack 12 MINIC1 Wireless LAN card slot 26 RJ1 LAN jack 13 U62 South bridge (Intel ICH7M)
Chapter 5101 Jumper Settings/Clear BIOS Password Procedures 1.Remove the DIMM cover and the lower DDR2 memory module, then find out the G96 position on the main board. Please just the lower DDR2 memory module, you will need the upper DDR2 memory module to boot up the system. (You should tear off the mylar to see G96). 2.Use a tweezers or a screwdriver to short the G96 pad and remain the short status. 3.Power on the system until POST is completed. Then you can release the tweezers or screwdriver. The BIOS password should be cleared after these steps.