eMachines EL1852 Service Guide
Page 7
... Boards 33 Removing the Memory Modules 35 Removing the Power Supply Unit 35 Removing the Front I/O and Card Reader Assembly 37 Removing the Mainboard 40 Hardware Diagnostic Procedure 41 System Check Procedures 41 Checkpoints 42 POST Error Indicators 46 BIOS Recovery 58 BIOS Update 59 Clearning CMOS 63 System Architecture 65 Block Diagram 65 Mainboard Layout 66 Jumper Setting 67 Setting Jumper 68 Connecting Optional Devices 69 Connecting Case Components 71 Field Replaceable Unit (FRU) List 73 Exploded Diagram 74 EL1852 FRU List 75 Technical Specifications...
... Boards 33 Removing the Memory Modules 35 Removing the Power Supply Unit 35 Removing the Front I/O and Card Reader Assembly 37 Removing the Mainboard 40 Hardware Diagnostic Procedure 41 System Check Procedures 41 Checkpoints 42 POST Error Indicators 46 BIOS Recovery 58 BIOS Update 59 Clearning CMOS 63 System Architecture 65 Block Diagram 65 Mainboard Layout 66 Jumper Setting 67 Setting Jumper 68 Connecting Optional Devices 69 Connecting Case Components 71 Field Replaceable Unit (FRU) List 73 Exploded Diagram 74 EL1852 FRU List 75 Technical Specifications...
eMachines EL1852 Service Guide
Page 9
...; 2 Duo E7600 and E7500 Series - System Features Component Operating system support Processor Core logic Graphics controller Memory Expansion options Connectivity Hard disk drive (HDD) Optical disc drive (ODD) Description • Microsoft Windows 7 Home Premium ×64 • Microsoft Windows 7 Home Basic ×32 • Microsoft Windows 7 Starter (×32 / ×64) • Ubuntu X-windows version • Linpus X-Windows • FreeDos • LGA775 socket, 775 pin contacts • Supports the following multi-core Intel...
...; 2 Duo E7600 and E7500 Series - System Features Component Operating system support Processor Core logic Graphics controller Memory Expansion options Connectivity Hard disk drive (HDD) Optical disc drive (ODD) Description • Microsoft Windows 7 Home Premium ×64 • Microsoft Windows 7 Home Basic ×32 • Microsoft Windows 7 Starter (×32 / ×64) • Ubuntu X-windows version • Linpus X-Windows • FreeDos • LGA775 socket, 775 pin contacts • Supports the following multi-core Intel...
eMachines EL1852 Service Guide
Page 15
... power is turned off. You must run this case, the system cannot retain configuration values in a battery-backed nonvolatile memory called CMOS RAM. In this utility under the following conditions: • When changing the system configuration including: • Setting the system time and date • Configuring the system drives and peripherals • Specifying the boot device sequence • Configuring the power management modes • Setting up system passwords or making other changes to the security setup...
... power is turned off. You must run this case, the system cannot retain configuration values in a battery-backed nonvolatile memory called CMOS RAM. In this utility under the following conditions: • When changing the system configuration including: • Setting the system time and date • Configuring the system drives and peripherals • Specifying the boot device sequence • Configuring the power management modes • Setting up system passwords or making other changes to the security setup...
eMachines EL1852 Service Guide
Page 20
... keyboard Num Lock key will be elimination some of the POST routines. Enabled Disabled When enabled, BIOS will show a full screen logo when booting; Enabled Disabled Displays the device assigned to emit error beeps or display error messages during USB device enumeration. The Setup Utility attempts to boot the operating system in the following order: • Hard disk • Optical drive (CD/DVD) • Removable device • Network boot (LAN) Press Enter to specify the boot device priority sequence for the installed hard drive(s). Press Enter to specify the boot device...
... keyboard Num Lock key will be elimination some of the POST routines. Enabled Disabled When enabled, BIOS will show a full screen logo when booting; Enabled Disabled Displays the device assigned to emit error beeps or display error messages during USB device enumeration. The Setup Utility attempts to boot the operating system in the following order: • Hard disk • Optical drive (CD/DVD) • Removable device • Network boot (LAN) Press Enter to specify the boot device priority sequence for the installed hard drive(s). Press Enter to specify the boot device...
eMachines EL1852 Service Guide
Page 31
... to disassemble the desktop computer for the different components vary in reverse. • The screws for maintenance and troubleshooting. EL1852 Service Guide 23 During the disassembly process, group the screws with the disassembly procedure, perform the steps listed below: 1. Make sure that the optical disc drive and the optional card reader slots are empty. 2. Unplug the power cord from the computer. 5. Unplug the network cable and all peripherals. 3. Turn off the power to...
... to disassemble the desktop computer for the different components vary in reverse. • The screws for maintenance and troubleshooting. EL1852 Service Guide 23 During the disassembly process, group the screws with the disassembly procedure, perform the steps listed below: 1. Make sure that the optical disc drive and the optional card reader slots are empty. 2. Unplug the power cord from the computer. 5. Unplug the network cable and all peripherals. 3. Turn off the power to...
eMachines EL1852 Service Guide
Page 49
... the cause of the system failure. 2. System Internal Inspection 1. Verify that there is no point of the LED behaviour. 2. Non-Acer products, prototype cards, or modified options can not be powered on the rear panel are Acer-qualified and supported. 10. Reinstall the side panel. 11. Troubleshooting Chapter 4 This chapter lists the POST error indicators and BIOS beep codes, as well general troubleshooting instructions. Power System Check If the...
... the cause of the system failure. 2. System Internal Inspection 1. Verify that there is no point of the LED behaviour. 2. Non-Acer products, prototype cards, or modified options can not be powered on the rear panel are Acer-qualified and supported. 10. Reinstall the side panel. 11. Troubleshooting Chapter 4 This chapter lists the POST error indicators and BIOS beep codes, as well general troubleshooting instructions. Power System Check If the...
eMachines EL1852 Service Guide
Page 51
... area. Also initialize BIOS modules on default values and clear passwords. Initializes data variables that may differ between different platforms based on system configuration. Disable ATAPI hardware. Make flash write disabled. Enable ATAPI hardware. Checkpoint 03 04 05 Description Disable NMI, Parity, video for pre-defined recovery file name in the system Initializes the interrupt controlling hardware (generally PIC) and interrupt vector table. Read error occurred on CMOS setup questions.
... area. Also initialize BIOS modules on default values and clear passwords. Initializes data variables that may differ between different platforms based on system configuration. Disable ATAPI hardware. Make flash write disabled. Enable ATAPI hardware. Checkpoint 03 04 05 Description Disable NMI, Parity, video for pre-defined recovery file name in the system Initializes the interrupt controlling hardware (generally PIC) and interrupt vector table. Read error occurred on CMOS setup questions.
eMachines EL1852 Service Guide
Page 52
... PS/2 mouse. Also, update the Kernel Variables. Initialize System Management Interrupt. Initialize RTC date/time. Test for boot strap processor Early CPU Init Exit Initializes the 8042 compatible Key Board Controller. Init Local APIC Set up boot strap processor Information Set up boot strap processor for POST Enumerate and set up application processors Re-enable cache for total memory installed in system RAM size if needed. 44 EL1852 Service Guide Detects and initializes the video adapter installed in the...
... PS/2 mouse. Also, update the Kernel Variables. Initialize System Management Interrupt. Initialize RTC date/time. Test for boot strap processor Early CPU Init Exit Initializes the 8042 compatible Key Board Controller. Init Local APIC Set up boot strap processor Information Set up boot strap processor for POST Enumerate and set up application processors Re-enable cache for total memory installed in system RAM size if needed. 44 EL1852 Service Guide Detects and initializes the video adapter installed in the...
eMachines EL1852 Service Guide
Page 53
... configuration display if needed / requested. Displays the system configuration screen if enabled. Initialize the CPU's before booting to OS. End of POST initialization of chipset registers. EL1852 Service Guide 45 Initializes IPL devices controlled by BIOS and option ROMs. Initializes remaining option ROMs. Generate and write contents of system management interrupt. Execute BIOS setup if needed . Passes control to the user and gets the user response for ACPI. The following functions: Reset, Detect, and Disable (function 0); Check boot password if installed...
... configuration display if needed / requested. Displays the system configuration screen if enabled. Initialize the CPU's before booting to OS. End of POST initialization of chipset registers. EL1852 Service Guide 45 Initializes IPL devices controlled by BIOS and option ROMs. Initializes remaining option ROMs. Generate and write contents of system management interrupt. Execute BIOS setup if needed . Passes control to the user and gets the user response for ACPI. The following functions: Reset, Detect, and Disable (function 0); Check boot password if installed...
eMachines EL1852 Service Guide
Page 54
...), the Setup utility will either: • Displays a POST error message, or • Emits a series of beep codes POST Error Messages POST error messages tell users what failure the system has detected. Function 4 searches for and configures all onboard peripherals that you make changes in the Setup menus, reboot the computer, enter Setup again and load Setup defaults to diagnostic mode and will switch to correct the error. 46 EL1852 Service Guide It is running in APIC mode Entering sleep state S1...
...), the Setup utility will either: • Displays a POST error message, or • Emits a series of beep codes POST Error Messages POST error messages tell users what failure the system has detected. Function 4 searches for and configures all onboard peripherals that you make changes in the Setup menus, reboot the computer, enter Setup again and load Setup defaults to diagnostic mode and will switch to correct the error. 46 EL1852 Service Guide It is running in APIC mode Entering sleep state S1...
eMachines EL1852 Service Guide
Page 58
... setup. Error initializing secondary DMA controller. BIOS could not initialize the Master Interrupt Controller. This causes POST to a drive's boot sector. A PCI adapter generated an I /O conflict PCI ROM conflict PCI IRQ conflict PCI IRQ routing table error Timer Error Refresh timer test failed Interrupt Controller-1 error Interrupt Controller-2 error Description Error initializing primary DMA controller. Usually this case, the BIOS must be updated to appear when a brand new CPU is a fatal error, often indication a problem with system hardware. BIOS POST found a PCI device...
... setup. Error initializing secondary DMA controller. BIOS could not initialize the Master Interrupt Controller. This causes POST to a drive's boot sector. A PCI adapter generated an I /O conflict PCI ROM conflict PCI IRQ conflict PCI IRQ routing table error Timer Error Refresh timer test failed Interrupt Controller-1 error Interrupt Controller-2 error Description Error initializing primary DMA controller. Usually this case, the BIOS must be updated to appear when a brand new CPU is a fatal error, often indication a problem with system hardware. BIOS POST found a PCI device...
eMachines EL1852 Service Guide
Page 59
... the CMOS battery. Error code = 004Ah Unknown BIOS error. Keyboard controller failure. User needs to unlock the keyboard to malfunction. This error can be replaced. Error in the setup. PS/2 keyboard support is enabled in the AMIBIOS8 ROM. This may occur for both Supervisor and User password verification. The password entered does not match the password set in initializing legacy Floppy Controller. This message usually indicates that key is not detected. CMOS settings are invalid. Indicates that the CMOS battery needs to reboot the machine. Error code...
... the CMOS battery. Error code = 004Ah Unknown BIOS error. Keyboard controller failure. User needs to unlock the keyboard to malfunction. This error can be replaced. Error in the setup. PS/2 keyboard support is enabled in the AMIBIOS8 ROM. This may occur for both Supervisor and User password verification. The password entered does not match the password set in initializing legacy Floppy Controller. This message usually indicates that key is not detected. CMOS settings are invalid. Indicates that the CMOS battery needs to reboot the machine. Error code...
eMachines EL1852 Service Guide
Page 60
... drive connection/cables • IDE disk drives • See "Undetermined Problems". • Mainboard NOTE Ensure the memory modules are installed properly and the contact leads are clean before diagnosing any system problems. 52 EL1852 Service Guide system does not work , then replace the heat sink fan. • Mainboard • Processor • Mainboard NOTE Normally, the processor fan should be operative, and the processor clock setting should be exactly set to enter power • Enter CMOS Setup and...
... drive connection/cables • IDE disk drives • See "Undetermined Problems". • Mainboard NOTE Ensure the memory modules are installed properly and the contact leads are clean before diagnosing any system problems. 52 EL1852 Service Guide system does not work , then replace the heat sink fan. • Mainboard • Processor • Mainboard NOTE Normally, the processor fan should be operative, and the processor clock setting should be exactly set to enter power • Enter CMOS Setup and...
eMachines EL1852 Service Guide
Page 61
... the HDD LED connector. • HDD LED cable NOTE Make sure the hard disk drive is configured correctly in CMOS Setup, the cable/jumper are displayed. Action/FRU • Enter CMOS Setup and load the default settings. • DIMM • Mainboard • CD/DVD-ROM may have dirt or foreign material on it . CD/DVD-ROM drive LED flashes for more than 30 seconds before diagnosing any hard disk drive problems. (If only one drive is installed, please make sure the drive is connected to reinstall disc. CD/DVD-ROM drive...
... the HDD LED connector. • HDD LED cable NOTE Make sure the hard disk drive is configured correctly in CMOS Setup, the cable/jumper are displayed. Action/FRU • Enter CMOS Setup and load the default settings. • DIMM • Mainboard • CD/DVD-ROM may have dirt or foreign material on it . CD/DVD-ROM drive LED flashes for more than 30 seconds before diagnosing any hard disk drive problems. (If only one drive is installed, please make sure the drive is connected to reinstall disc. CD/DVD-ROM drive...
eMachines EL1852 Service Guide
Page 62
.... • Ensure the modem voice-in BIOS Setup or Power Management is readable). • Mainboard • Monitor signal connection/cable • Monitor • Video adapter card • Mainboard • Monitor signal connection/cable • Video adapter card • Mainboard 54 EL1852 Service Guide Action/FRU • Remove all non-factory-installed cards. • Load default settings (if screen is set correctly. • RTC battery • Mainboard Audio-related Symptoms Symptom/Error Audio software program invoked but no sound output. (Data files are received normally...
.... • Ensure the modem voice-in BIOS Setup or Power Management is readable). • Mainboard • Monitor signal connection/cable • Monitor • Video adapter card • Mainboard • Monitor signal connection/cable • Video adapter card • Mainboard 54 EL1852 Service Guide Action/FRU • Remove all non-factory-installed cards. • Load default settings (if screen is set correctly. • RTC battery • Mainboard Audio-related Symptoms Symptom/Error Audio software program invoked but no sound output. (Data files are received normally...
eMachines EL1852 Service Guide
Page 75
... are numbered. EL1852 Service Guide 67 The illustrations show a 2-pin jumper.When the jumper cap is placed on the correct pins. Jumpers withmore than one pin, the jumper is SHORT. Pins 1 and 2 are SHORT. Item 15 16 17 18 19 20 Code AUDIO1 SYS_FAN1 ATX12V1 USBLAN1 VGA1 PSKBM2 Component Rear audio jacks (microphone, line-out, and line-in jacks) System fan cable connector 4-pin ATX power connector USB 2.0 and Ethernet ports Monitor port PS/2 keyboard and mouse ports Jumper Setting The...
... are numbered. EL1852 Service Guide 67 The illustrations show a 2-pin jumper.When the jumper cap is placed on the correct pins. Jumpers withmore than one pin, the jumper is SHORT. Pins 1 and 2 are SHORT. Item 15 16 17 18 19 20 Code AUDIO1 SYS_FAN1 ATX12V1 USBLAN1 VGA1 PSKBM2 Component Rear audio jacks (microphone, line-out, and line-in jacks) System fan cable connector 4-pin ATX power connector USB 2.0 and Ethernet ports Monitor port PS/2 keyboard and mouse ports Jumper Setting The...
eMachines EL1852 Service Guide
Page 96
... Hard Disk Drive Item Controller Number of HDD bays Form factor Interface Supported capacities 160 GB 320 GB 500 GB 1000 GB 1500 GB Specification Integrated in the Intel® ICH7 Supports DVD-R/RW drive or DVD-Super Multi double-layer drive 5.25-inch standard SATA 16x...WD - WD15EARS-22MVWB0 Optical Disc Drive Item Controller Type Form factor Interface Write/read speed Supported models Specification Integrated in the Integrated in the Intel® ICH7 1 3.5-inch 25.4 mm SATA 3.0 • HGST Jupiter - DH-16D5SH • PLDS - DH-16ABSH EL1852 Service Guide 88 HDS721010CLA332 • ...
... Hard Disk Drive Item Controller Number of HDD bays Form factor Interface Supported capacities 160 GB 320 GB 500 GB 1000 GB 1500 GB Specification Integrated in the Intel® ICH7 Supports DVD-R/RW drive or DVD-Super Multi double-layer drive 5.25-inch standard SATA 16x...WD - WD15EARS-22MVWB0 Optical Disc Drive Item Controller Type Form factor Interface Write/read speed Supported models Specification Integrated in the Integrated in the Intel® ICH7 1 3.5-inch 25.4 mm SATA 3.0 • HGST Jupiter - DH-16D5SH • PLDS - DH-16ABSH EL1852 Service Guide 88 HDS721010CLA332 • ...
eMachines EL1852 Service Guide
Page 99
... 4 specifications 89 troubleshooting 54 B beep codes 56 BIOS checkpoints 42 clear CMOS 63 crisis recovery disk 58 recovery 58 specifications 87 update, DOS mode 59 update, Windows mode 60 BIOS version system 10 block diagram 65 boot block beep codes 56 execute 58 boot sequence 12 button optical drive eject 4 C card reader multi-in-1 4 remove 37 specifications 89 checkpoints ACPI runtime 46 DIM 45 overview 42 POST 43 Chipset Features Advanced 13 CMOS clear 63 CMOS Features Index Standard 11 CMOS Setup Utility 7 access 8 navigation keys 9 connectivity options 1 specifications 89 connector LAN...
... 4 specifications 89 troubleshooting 54 B beep codes 56 BIOS checkpoints 42 clear CMOS 63 crisis recovery disk 58 recovery 58 specifications 87 update, DOS mode 59 update, Windows mode 60 BIOS version system 10 block diagram 65 boot block beep codes 56 execute 58 boot sequence 12 button optical drive eject 4 C card reader multi-in-1 4 remove 37 specifications 89 checkpoints ACPI runtime 46 DIM 45 overview 42 POST 43 Chipset Features Advanced 13 CMOS clear 63 CMOS Features Index Standard 11 CMOS Setup Utility 7 access 8 navigation keys 9 connectivity options 1 specifications 89 connector LAN...
eMachines EL1852 Service Guide
Page 100
... 54 monitor port 5 88 N name product 10 O ODD, see optical disc drive 1 operating system 1 optical disc drive configuration 11 remove 29 specifications 88 troubleshooting 53 OS support 1 P panel rear 5 PC Health Status 16 POST, see Power-On Self-Test 43 power ACPI compliance 2 button/indicator 4 specifications 2 power management ACPI mode table 90 specifications 2 Power Management Setup 15 power supply unit 24-pin ATX connector 66 4-pin ATX connector 67 remove 35 specifications 89 troubleshooting 55 Power-On Self-Test beep codes 56 checkpoints 43 error messages 46 processor specifications 86...
... 54 monitor port 5 88 N name product 10 O ODD, see optical disc drive 1 operating system 1 optical disc drive configuration 11 remove 29 specifications 88 troubleshooting 53 OS support 1 P panel rear 5 PC Health Status 16 POST, see Power-On Self-Test 43 power ACPI compliance 2 button/indicator 4 specifications 2 power management ACPI mode table 90 specifications 2 Power Management Setup 15 power supply unit 24-pin ATX connector 66 4-pin ATX connector 67 remove 35 specifications 89 troubleshooting 55 Power-On Self-Test beep codes 56 checkpoints 43 error messages 46 processor specifications 86...
eMachines EL1852 Service Guide
Page 101
... BIOS 87 system chipsets 87 speed processor 10 supervisor password 18 setting 18 system architecture 65 system chipsets 87 system date 11 system dimensions 3 system passwords change 19 remove 19 set 19 system time 11 system views front view 4 system weight 3 T temperature monitoring 16 operating 3 troubleshooting BIOS checkpoints 42 BIOS recovery 58 BIOS update 59 clearing CMOS 63 component failure 52 POST error indicators 46 type processor 10 U undetermined problems 57 USB ports front 4, 5 user password 18 V VGA port 5 video controller 1 troubleshooting 54 W wireless LAN board, remove...
... BIOS 87 system chipsets 87 speed processor 10 supervisor password 18 setting 18 system architecture 65 system chipsets 87 system date 11 system dimensions 3 system passwords change 19 remove 19 set 19 system time 11 system views front view 4 system weight 3 T temperature monitoring 16 operating 3 troubleshooting BIOS checkpoints 42 BIOS recovery 58 BIOS update 59 clearing CMOS 63 component failure 52 POST error indicators 46 type processor 10 U undetermined problems 57 USB ports front 4, 5 user password 18 V VGA port 5 video controller 1 troubleshooting 54 W wireless LAN board, remove...
