Acer Aspire 1420pt Service Guide
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Chapter 4151 8.Remove and recently installed hardware or software. 9.Restore system and file settings from a known good date using System Restore. If the issue is not fixed, repeat the preceding steps and select an earlier time and date. 10.Reinstall the Operating System. 11 .If the Issue is still not resolved, see “Online Support Information” on page 165. Internal Microphone Failure If the internal Microphone fails, perform the following actions one at a time to correct the problem. Do not replace non-defective FRUs: Microphone Problems If internal or external Microphones do no operate correctly, perform the following actions one at a time to correct the problem. 1.Check that the microphone is enabled. Navigate to Start´ Control Panel´ Hardware and Sound´ Sound and select the Recording tab. 2.Right-click on the Recording tab and select Show Disabled Devices (clear by default). 3.The microphone appears on the Recording tab. 4.Right-click on the microphone and select Enable. 5.Select the microphone then click Properties. Select the Levels tab. 6.Increase the volume to the maximum setting and click OK. 7.Test the microphone hardware: a.Select the microphone and click Configure. b.Select Set up microphone. Start Check M/B Mic . cable Re-assemble the MIC cable to M/B OK NG Check MIC wire of LCD module OK Swap MIC wire of LCD module OK NG Swap M/B Start Check M/B Mic . cable Re-assemble the MIC cable to M/B OK NG Check MIC wire of LCD module OK Swap MIC wire of LCD module OK NG Swap M/B
152Chapter 4 c.Select the microphone type from the list and click Next. d.Follow the onscreen prompts to complete the test. 8.If the Issue is still not resolved, see “Online Support Information” on page 165. HDD Not Operating Correctly If the HDD does not operate correctly, perform the following actions one at a time to correct the problem. 1.Disconnect all external devices. 2.Run a complete virus scan using up-to-date software to ensure the computer is virus free. 3.Run the Windows 7 Startup Repair Utility: a.insert the Windows 7 Operating System DVD in the ODD and restart the computer. b.When prompted, press any key to start to the operating system DVD. c.The Install Windows screen displays. Click Next. d.Select Repair your computer. e.The System Recovery Options screen displays. Click Next. f.Select the appropriate operating system, and click Next. NOTE: Click Load Drivers if controller drives are required. g.Select Startup Repair. h.Startup Repair attempts to locate and resolve issues with the computer. i.When complete, click Finish. If an issue is discovered, follow the onscreen information to resolve the problem. 4.Run the Windows Memory Diagnostic Tool. For more information see Windows Help and Support. 5.Restart the computer and press F2 to enter the BIOS Utility. Check the BIOS settings are correct and that CD/DVD drive is set as the first boot device on the Boot menu. 6.Ensure all cables and jumpers on the HDD and ODD are set correctly. 7.Remove any recently added hardware and associated software. 8.Run the Windows Disk Defragmenter. For more information see Windows Help and Support. 9.Run Windows Check Disk by entering chkdsk /r from a command prompt. For more information see Windows Help and Support. 10.Restore system and file settings from a known good date using System Restore. If the issue is not fixed, repeat the preceding steps and select an earlier time and date. 11 .Replace the HDD. See “Disassembly Process” on page 34.
Chapter 4153 USB Failure (Right up/down side) If the rightside USB port fails, perform the following actions one at a time to correct the problem. Do not replace non-defective FRUs: Other Failures If the VGA board, LAN Port, external MIC or Speakers, PCI Express Card, 5-in-1 Card Reader or Volume Wheel fail, perform the following general steps to correct the problem. Do not replace non-defective FRUs: 1.Check whether the drive is OK. 2.Verify that the Test Fixture is ok. 3.Swap the main board and retest. Start Check USB/B to M/B cable Re-assemble the USB/B cable to M/B OK NG Check USB/B OK Swap USB/B and USB cable OK NG Swap M/B Start Check USB/B to M/B cable Re-assemble the USB/B cable to M/B OK NG Check USB/B OK Swap USB/B and USB cable OK NG Swap M/B
154Chapter 4 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. 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 On Issue” on page 144.): 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: • Non-Acer devices • Printer, mouse, and other external devices •Battery pack • Hard disk drive •DIMM • CD-ROM/Diskette drive Module • PC 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: • System board • LCD assembly
Chapter 4155 Post Codes These tables describe the Post Codes and components of the POST process. Sec: NO_EVICTION_MODE_DEBUG EQU 1 (CommonPlatform\sec\Ia32\SecCore.inc) Memory: DEBUG_BIOS EQU 1 (Chipset\Alviso\MemoryInitAsm\IA32\IMEMORY.INC) 0x C2MTRR setup 0x C3Enable cache 0x C4Establish cache tags 0x C5Enter NEM, Place the BSP in No Fill mode, set CR0.CD = 1, CR0.NW = 0. 0xCFCache Init Finished 0x A0First memory check point 0x 01Enable MCHBAR 0x 02Check for DRAM initialization interrupt and reset fail 0x 03Verify all DIMMs are DDR or DDR2 and unbuffered 0x 04Detect an improper warm reset and handle 0x 05Detect if ECC SO-DIMMs are present in the system 0x 06Verify all DIMMs are single or double sided and not asymmetric 0x 07Verify all DIMMs are x8 or x16 width 0x 08Find a common CAS latency between the DIMMS and the MCH 0x 09Determine the memory frequency and CAS latency to program 0x 10Determine the smallest common TRAS for all DIMMs 0x 11Determine the smallest common TRP for all DIMMs 0x 12Determine the smallest common TRCD for all DIMMs 0x 13Determine the smallest refresh period for all DIMMs
156Chapter 4 0x 14Verify burst length of 8 is supported by all DIMMs 0x 15Determine the smallest tWR supported by all DIMMs 0x 16Determine DIMM size parameters 0x 17Program the correct system memory frequency 0x 18Determine and set the mode of operation for the memory channels 0x 19Program clock crossing registers 0x 20Disable Fast Dispatch 0x 21Program the DRAM Row Attributes and DRAM Row Boundary registers 0x 22Program the DRAM Bank Architecture register 0x 23Program the DRAM Timing & and DRAM Control registers 0x 24Program ODT 0x 25Perform steps required before memory init 0x 26Program the receive enable reference timing control register Program the DLL Timing Control Registers, RCOMP settings 0x 27Enable DRAM Channel I/O Buffers 0x 28Enable all clocks on populated rows 0x 29Perform JEDEC memory initialization for all memory rows 0x 30 0x 31Perform steps required after memory init Program DRAM throttling and throttling event registers 0x 32Setup DRAM control register for normal operation and enable 0x 33Enable RCOMP 0x 34Clear DRAM initialization bit in the SB 0x 35Initialization Sequence Completed, program graphic clocks 0x AFDisable access to the XMM registers
Chapter 4157 BDS & Specific action: 0x0 0Report the legacy boot is happening 0x1 2Wake up the APs 0x1 3Initialize SMM Private Data and relocate BSP SMBASE 0x2 1 0x2 7PC init begin at the stage1 Report every memory range do the hard ware ECC init 0x2 8Report status code of every memory range 0x5 0Get the root bridge handle 0x5 1Notify pci bus driver starts to program the resource 0x5 8Reset the host controller 0x5AIdeBus begin initialization 0x7 0Simple Text Output Protocol Functions(VGA class reset) 0x7 1Report that VGA Class driver is being disabled 0x7 2Report that VGA Class driver is being enabled 0x7 8Terminal Console In reset and Console Out reset 0x7 9Report that the remote terminal is being disabled 0x7AReport that the remote terminal is being enabled 0x9 0Keyboard reset 0x9 1USB Keyboard disable 0x9 2Keyboard detection 0x9 3Report that the usb keyboard is being enabled 0x9 4Clear the keyboard buffer 0x9 5Init Keyboard 0x9 8Mouse reset
158Chapter 4 Each PEIM entry point used in 80_PORT 0x9 9 0x9AMouse disable Detect PS2 mouse 0x9BReport that the mouse is being enabled 0xB8Peripheral removable media reset(ex:IsaFloppy, USB device) 0xB9Peripheral removable media disable 0xBBPeripheral removable media enable 0xE 4Report Status Code here for DXE_ENTRY_POINT once it is available 0xF 8Report that ExitBootServices() has been called 0xF 9Runtime driver set virtual address map 0x 00 0x 01PEI_EVENT_LOG 0x 02PEI_OEM_SERVICE 0x 03PEI_SIO_INIT 0x 04PEI_MONO_STATUS_CODE 0x 05PEI_CPU_IO_PCI_CFG 0x 06PEI_CPU_IO 0x 07PEI_PCI_CFG 0x 08PEI_CPU_PEIM 0x 09PEI_PLATFORM_STAGE1 0x0APEI_VARIABLE 0x0B 0x0CPEI_SB_INIT PEI_CAPSULE 0x0DPEI_PLATFORM_STAGE2 0x0 EPEI_SB_SMBUS_ARP_DISABLED 0x 0FPEI_HOST_TO_SYSTEM 0x 10PEI_MEMORY_INIT
Chapter 4159 Each Driver entry point used in 80_PORT 0x 11PEI_S3_RESUME 0x 12PEI_CLOCK_GEN 0x 13PEI_OP_PRESENCE 0x 14PEI_TPM_TCG 0x 15PEI_FIND_FV 0x 16PEI_H2O_DEBUG_IO 0x 17PEI_H2O_DEBUG_COMM 0x 18PEI_SMM_CONTROL 0x19~0x1FPEI_RESERVED 0x20~0x2EPEI_OEM_DEFINED 0x2FPEI_DXE_IPL 0x 30RESERVED 0x 31DXE_CRC32_SECTION_EXTRACT 0x 32SCRIPT_SAVE 0x 33ACPI_S3_SAVE 0x 34SMART_TIMER 0x 35JPEG_DECODER 0x 36PCX_DECODER 0x 37HT_CPU / MP_CPU 0x 38LEGACY_METRONOME 0x 39FTWLITE 0x3ARUN_RIME 0x3BMONOTONIC_COUNTER 0x3CWATCH_DOG_TIMER
160Chapter 4 0x3DSECURITY_STUB 0x3 EDXE_CPU_IO 0x 3FCF9_RESET 0x 40PC_RTC 0x 41 STATUS_CODE 0x 42VARIABLE 0x 43EMU_VARIABLE 0x 44DXE_CHIPSET_INIT 0x 45DXE_ALERT_FORMAT 0x 46PCI_HOST_BRIDGE 0x 47PCI_EXPRESS 0x 48DXE_SB_INIT 0x 49IDE_CONTROLLER 0x4A 0x4BSATA_CONTROLLER SB_SM_BUS 0x4CISA_ACPI_DRIVER 0x4DISA_BUS 0x4 EISA_SERIAL 0x 4FIDE_BUS 0x 50PCI_BUS 0x 51BOOT_PRIORITY 0x 52FVB_SERVICE 0x 53ACPI_PLATFORM 0x 54PCI_HOT_PLUG 0x 55DXE_PLATFORM