eMachines EL1852 Service Guide
Page 7
... 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...
... 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...
eMachines EL1852 Service Guide
Page 50
... keyboard controller. Re-enable CACHE. Adjust policies and cache first 8MB. Bootblock code is copied from power management suspend state. If BIOS recovery is disabled. Determine whether to flat mode with 4GB limit and GA20 enabled. Checkpoints A checkpoint is either a byte or word value... as a POST card or POST diagnostic card. Verifythat flat mode is currently executing. Perform keyboard controller BAT test. See Bootblock Recovery Code Checkpoints section for future use in debugging problems that checkpoints may occur during bootblock and Power-On Self Test (POST) to...
... keyboard controller. Re-enable CACHE. Adjust policies and cache first 8MB. Bootblock code is copied from power management suspend state. If BIOS recovery is disabled. Determine whether to flat mode with 4GB limit and GA20 enabled. Checkpoints A checkpoint is either a byte or word value... as a POST card or POST diagnostic card. Verifythat flat mode is currently executing. Perform keyboard controller BAT test. See Bootblock Recovery Code Checkpoints section for future use in debugging problems that checkpoints may occur during bootblock and Power-On Self Test (POST) to...
eMachines EL1852 Service Guide
Page 51
...the floppy controller in the Kernel Variable "wCMOSFlags." Jump back to checkpoint EB. Jump back to checkpoint E9. Start reading the recovery file cluster by reading storage area. Erase the flash part Program the flash part. Make flash write disabled. Give control to ...to BIOS POST (ExecutePOSTKernel). Verify that may occur during the POST portion of checkpoints that the found flash part size equals the recovery file size. Disable ATAPI hardware. Initialized CMOS as mentioned in the super I/O. Verify CMOS checksum manually by cluster. Initializes both the...
...the floppy controller in the Kernel Variable "wCMOSFlags." Jump back to checkpoint EB. Jump back to checkpoint E9. Start reading the recovery file cluster by reading storage area. Erase the flash part Program the flash part. Make flash write disabled. Give control to ...to BIOS POST (ExecutePOSTKernel). Verify that may occur during the POST portion of checkpoints that the found flash part size equals the recovery file size. Disable ATAPI hardware. Initialized CMOS as mentioned in the super I/O. Verify CMOS checksum manually by cluster. Initializes both the...
eMachines EL1852 Service Guide
Page 60
... are installed properly and the contact leads are clean before diagnosing any system problems. 52 EL1852 Service Guide the Control Panel. • Reload software from Recovery CD. Blinking cursor only; If directed to enter power • Enter CMOS Setup and load the default settings. Processor test failed. system does not work...
... are installed properly and the contact leads are clean before diagnosing any system problems. 52 EL1852 Service Guide the Control Panel. • Reload software from Recovery CD. Blinking cursor only; If directed to enter power • Enter CMOS Setup and load the default settings. Processor test failed. system does not work...
eMachines EL1852 Service Guide
Page 63
... the power cord from electrical outlet can turn off the system.) Pressing the power button does not turn on the system Executing software shutdown from Recovery CD. • Power supply • Mainboard EL1852 Service Guide 55 No system power, or power supply fan is properly installed. Refer to the printer service...
... the power cord from electrical outlet can turn off the system.) Pressing the power button does not turn on the system Executing software shutdown from Recovery CD. • Power supply • Mainboard EL1852 Service Guide 55 No system power, or power supply fan is properly installed. Refer to the printer service...
eMachines EL1852 Service Guide
Page 64
If the system video adapter is an add-in boards is displayed but the computer stops during POST, listen for recovery Flash Programming successful File read /write test error Keyboard controller BAT command failed General exception error (processor exception interrupt error) Display memory error (system video ...
If the system video adapter is an add-in boards is displayed but the computer stops during POST, listen for recovery Flash Programming successful File read /write test error Keyboard controller BAT command failed General exception error (processor exception interrupt error) Display memory error (system video ...
eMachines EL1852 Service Guide
Page 66
...8. You need to access and execute the boot block program to save the default settings and close the Setup utility. 9. Creating the BIOS Crisis Recovery Disk 1. Press F9 to run the CMOS Setup Utility. 6. Note the following when restoring the BIOS settings: • Make sure the computer... is complete the computer will now execute the BIOS recovery process. Prepare a removable USB storage device with a capacity size greater than 10 MB. Set up a computer running the Windows XP or Windows ...
...8. You need to access and execute the boot block program to save the default settings and close the Setup utility. 9. Creating the BIOS Crisis Recovery Disk 1. Press F9 to run the CMOS Setup Utility. 6. Note the following when restoring the BIOS settings: • Make sure the computer... is complete the computer will now execute the BIOS recovery process. Prepare a removable USB storage device with a capacity size greater than 10 MB. Set up a computer running the Windows XP or Windows ...
eMachines EL1852 Service Guide
Page 99
... 10 audio headphone jack 4 microphone jack, rear 5 microphone jack,front 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...
... 10 audio headphone jack 4 microphone jack, rear 5 microphone jack,front 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...
eMachines EL1852 Service Guide
Page 101
... 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...
... 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...
