Lenovo H4 Series Hardware Maintenance Manual V2.0
Page 32
... be faulty. 30 Before declaring the motherboard beyond all other expansion cards 6 beeps are absent, one at a time until the problem happens again. If the video adapter is an integrated part of the add-in cards 7 beeps is an Display memory error (system...3 beeps Base memory read/write test error 4 beeps Fatal error indicating a serious Motherboard timer not operational problem with known good modules. 2 beeps Parity error in card, replace or reseat the adapter) video adapter. switch to protected mode) • If beep codes are not generated when all hope, eliminate...
... be faulty. 30 Before declaring the motherboard beyond all other expansion cards 6 beeps are absent, one at a time until the problem happens again. If the video adapter is an integrated part of the add-in cards 7 beeps is an Display memory error (system...3 beeps Base memory read/write test error 4 beeps Fatal error indicating a serious Motherboard timer not operational problem with known good modules. 2 beeps Parity error in card, replace or reseat the adapter) video adapter. switch to protected mode) • If beep codes are not generated when all hope, eliminate...
Lenovo H4 Series Hardware Maintenance Manual V2.0
Page 33
...• Checks some basic system-board operations • Checks the memory operation • Starts the video operation • Verifies that the boot drive is working If the POST detects a problem, an error message appears on the system, it performs a series of tests that check the operation ... system manufacturer. Consult your system manufacturer's technical support. • If beep codes are absent, one at a time until the problem happens again. POST error codes Each time you power-on the screen. Before declaring the motherboard beyond all expansion 10 beeps cards except the...
...• Checks some basic system-board operations • Checks the memory operation • Starts the video operation • Verifies that the boot drive is working If the POST detects a problem, an error message appears on the system, it performs a series of tests that check the operation ... system manufacturer. Consult your system manufacturer's technical support. • If beep codes are absent, one at a time until the problem happens again. POST error codes Each time you power-on the screen. Before declaring the motherboard beyond all expansion 10 beeps cards except the...
Lenovo H4 Series Hardware Maintenance Manual V2.0
Page 35
...you find a suitable boot device. External Cache RAM g. Diskette drive 3. Power-on the computer to the computer. Undetermined problems If this computer has a parallel ATA hard disk drive, make sure that the hard disk drive is jumpered as a ... is jumpered as a slave. 1. External Cache f. External devices (modem, printer, or mouse) b. Extended video memory e. a. Memory modules d. Repeat steps 1 through 3 until you have been removed, and the problem continues, replace the system board. 33 Power-off the computer. 2. Remove or disconnect the following components (if...
...you find a suitable boot device. External Cache RAM g. Diskette drive 3. Power-on the computer to the computer. Undetermined problems If this computer has a parallel ATA hard disk drive, make sure that the hard disk drive is jumpered as a ... is jumpered as a slave. 1. External Cache f. External devices (modem, printer, or mouse) b. Extended video memory e. a. Memory modules d. Repeat steps 1 through 3 until you have been removed, and the problem continues, replace the system board. 33 Power-off the computer. 2. Remove or disconnect the following components (if...