Acer Aspire 4252/4552/4552G_SG

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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 114.): 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-Gateway devices • Printer, mouse, and other external devices • Battery ackp • 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 126 Chapter 4
Post Codes These tables describe the POST codes and descriptions during the POST. . Code 02h 03h 04h 06h 08h 09h 0Ah 0Bh 0Ch 0Eh POST Routine Description Verify Real Mode Disable Non-Maskable Interrupt (NMI) Get CPU type Initialize system hardware Initialize chipset with initial POST values Set IN POST flag Initialize CPU registers Enable CPU cache Initialize caches to initial POST values Initialize I/O component Code Beeps POST Routine Description 0Fh Initialize the local bus IDE 10h Initialize Power Management 11h Load alternate registers with initial POST values 12h Restore CPU control word during warm boot 13h Initialize PCI Bus Mastering devices 14h Initialize keyboard controller 16h 1-2-2-3 BIOS ROM checksum 17h Initialize cache before memory autosize 18h 8254 timer initialization 1Ah 8237 DMA controller initialization 1Ch Reset Programmable Interrupt Controller 20h 1-3-1-1 T est DRAM refresh 22h 1-3-1-3 Test 8742 Keyboard Controller 24h Set ES segment register to 4 GB 26h Enable A20 line 28h Autosize DRAM 29h Initialize POST Memory Manager 2Ah Clear 512 KB base RAM 2Ch 1-3-4-1 RAM failure on address line xxxx* 2Eh 1-3-4-3 RAM failure on data bits xxxx* of low byte of memory bus 2Fh Enable cache before system BIOS shadow 30h 1-4-1-1 RAM failure on data bits xxxx* of high byte of memory bus 32h Test CPU bus-clock frequency 33h Initialize Phoenix Dispatch Manager 36h Warm start shut down 38h Shadow system BIOS ROM 3Ah Autosize cache Chapter 4 127
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Acer Aspire 4252/4552/4552G Service
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Copyright Copyright © 2010 by Acer
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Preface Before using this informati
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Table of Contents Removing the Blue
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Table of Contents X
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Graphics Aspire 4252 and 2552 • A
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Input and control • Keyboard •
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System Block Diagram 25MHz LAN BROA
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# Icon Item Description 8 Power ind
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5 Emergency eject hole Base View No
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Touchpad Basics The following items
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Windows Keys The keyboard has two k
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Hardware Specifications and Configu
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CPU Fan True Value Table (CPU) Fan
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Memory Combinations Slot 1 Slot 2 T
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Hard Disk Drive Interface (continue
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HDMI Port Item Specification Compli
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Super-Multi Drive Module (continued
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Main Battery Item LCD Inverter (Not
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Card Reader Chipset Features Item S
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Information The Information screen
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Security The Security screen contai
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Changing a Password 1. Use the ↑
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Exit The Exit screen allows you to
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BIOS Flash Utility The BIOS flash m
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Removing BIOS Passwords: If you key
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Miscellaneous Utilities Using Boot
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46 Chapter 2
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Pre-disassembly Instructions Before
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External Modules Disassembly Proces
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Removing the SD Dummy Card 1. See
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5. Unlock the keyboard FPC and disc
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4. Remove the ODD bezel by rotating
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Removing the Lower Cover 1. See “
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Removing the DIMM Modules 1. See
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4. Detach and remove the WLAN board
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Removing the RTC Battery 1. See “
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Removing the HDD Module 1. See “R
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Removing the LCD Module 1. See “R
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Removing the Thermal Module 1. See
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Removing the CPU 1. See “Removing
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4. Lift the mainboard away the lowe
Page 86 and 87: Removing the LCD Bezel 1. See “Re
Page 88 and 89: Removing the Camera Module 1. See
Page 90 and 91: 4. Lift the LCD panel clear of the
Page 92 and 93: Removing the WLAN Antennas 1. See
Page 94 and 95: Replacing the LVDS Cable 1. Turn th
Page 96 and 97: Removing the LCD Panel 1. Place the
Page 98 and 99: Replacing the Camera Module 1. Conn
Page 100 and 101: 4. Apply pressure along the bottom
Page 102 and 103: Main Unit Assembly Process Replacin
Page 104 and 105: Replacing the CPU IMPORTANT:The CPU
Page 106 and 107: 5. Connect the fan cable as shown.
Page 108 and 109: 3. Connect and lock the LVDS cable.
Page 110 and 111: 3. Connect the Bluetooth cable to t
Page 112 and 113: Step Size Quantity Screw Type HDD M
Page 114 and 115: Replacing the USB Board 1. Place th
Page 116 and 117: 3. Connect the two (2) antenna cabl
Page 118 and 119: Replacing the Lower Cover 1. Place
Page 120 and 121: 3. Push the ODD module into the ODD
Page 122 and 123: Replacing the SD dummy card 1. Inse
Page 124 and 125: Power On Issue If the system doesn
Page 126 and 127: Abnormal Video Display If video dis
Page 128 and 129: Touchpad Failure If the Touchpad do
Page 130 and 131: HDD Not Operating Correctly If the
Page 132 and 133: a. Double-click lDE ATA/ATAPI contr
Page 134 and 135: Wireless Function Failure If the WL
Page 138 and 139: Code Beeps POST Routine Description
Page 140 and 141: Code Beeps POST Routine Description
Page 142 and 143: Bottom View 2 1 3 4 5 6 7 8 9 10 11
Page 144 and 145: BIOS Recovery by Crisis Disk BIOS R
Page 146 and 147: Acer Aspire 4252/4552/4552G Explode
Page 148 and 149: Acer Aspire 4252/4552/4552G FRU Lis
Page 150 and 151: Category Description P/N CPU/PROCES
Page 152 and 153: LCD Category Description P/N Keyboa
Page 154 and 155: Category Description P/N LCD BRACKE
Page 156 and 157: Appendix A Model Definition and Con
Page 158 and 159: Model Country Acer Part No Memory 1
Page 160 and 161: AS4552- P541G32Mnrr AS4552- P542G25
Page 162 and 163: Model Country Acer Part No BOM Name
Page 166 and 167: AS4552G- N954G75Mnrr AS4552G- N954G
Page 168 and 169: Model Country Acer Part No BOM Name
Page 172 and 173: Vendor Type Description P/N AMDISS
Page 174 and 175: 164 Appendix B
Page 176 and 177: 166 Appendix C
Page 178: R S T U W RTC Battery 70, 97 SD Car
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Acer Aspire 4252/4552/4552G_SG

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