Acer Aspire 4252/4552/4552G_SG

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Code Beeps POST Routine Description 3Ch Advanced configuration of chipset registers 3Dh Load alternate registers with CMOS values 42h Initialize interrupt vectors 45h POST device initialization 46h 2-1-2-3 Che ck ROM copyright notice 48h Check video configuration against CMOS 49h Initialize PCI bus and devices 4Ah Initialize all video adapters in system 4Bh QuietBoot start (optional) 4Ch Shadow video BIOS ROM Code Beeps POST Routine Description 4Eh Display BIOS copyright notice 50h Display CPU type and speed 51h Initialize EISA board 52h T est keyboard 54h Set key click if enabled 58h 2-2-3-1 Test for unexpected interrupts 59h Initial ize POST display service 5Ah Display prompt "Press F2 to enter SETUP" 5Bh Disable CPU cache 5Ch Test RAM between 512 and 640 KB 60h Test extended memory 62h Test extended memory address lines 64h Jump to UserPatch1 66h Configure advanced cache registers 67h Initialize Multi Processor APIC 68h 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 address for UMB recovery 70h Displ ay error messages 72h Check for configuration errors 76h Check for keyboard errors 7Ch Set up hardware interrupt vectors 7Eh Initialize coprocessor if present 80h Disable onboard Super I/O ports and IRQs 81h Late POST device initialization 82h Detect and install external RS232 ports 83h Configure non-MCD IDE controllers 84h Detect and install external parallel ports 128 Chapter 4
Code Beeps POST Routine Description 85h Initial ize PC-compatible PnP ISA devices 86h Re-initialize onboard I/O ports. 87h Configure Motheboard Configurable Devices (optional) 88h Initialize BIOS Data Area 89h Enable Non-Maskable Interrupts (NMIs) 8Ah Initialize Extended BIOS Data Area 8Bh Test and initialize PS/2 mouse 8Ch Initialize floppy controller 8Fh Code Beeps POST Routine Description 90h Initial 91h Initial 92h Jump 93h 95h 96h 97h Determine number of ATA drives (optional) ize hard-disk controllers ize local-bus hard-disk controllers to UserPatch2 Build MPTABLE for multi-processor boards Install CD ROM for boot Clear huge ES segment register Fixup Multi Processor table 98h 1-2 Search for option ROMs. One long, two short beeps on checksum failure 99h 9Ah Shad 9Ch 9Dh 9Eh 9Fh A0h A2h A4h A8h Erase AAh ACh Enter AEh B0h B2h Check for SMART Drive (optional) ow option ROMs Set up Power Management Initialize security engine (optional) Enable hardware interrupts Determine number of ATA and SCSI drives Set time of day Check key lock Initialize Typematic rate F2 prompt Scan for F2 key stroke SETUP Clear Boot flag Check for errors POST done - prepare to boot operating system B4h 1 One short beep before boot B5h B6h B9h Prep BAh BBh BCh BDh Terminate QuietBoot (optional) Check password (optional) are Boot Initialize DMI parameters Initialize PnP Option ROMs Clear parity checkers Display MultiBoot menu Chapter 4 129
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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
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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 136 and 137: Intermittent Problems Intermittent
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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