Dell 9150 service manual Message Possible Cause Corrective Action, Reseat the memory modules

Advanced Troubleshooting: Dell Dimension 9150 Service Manual

3-4-2 Screen retrace failure

3-4-3 Search for video ROM failure

4-2-1 No time tick

4-2-2 Shutdown failure

4-2-3 Gate A20 failure

4-2-4 Unexpected interrupt in protected mode

4-3-3 Timer-chip counter 2 failure

4-3-4 Time-of-day clock stopped 4-4-1 Serial or parallel port test failure 4-4-4 Cache test failure

Message	Possible Cause	Corrective Action
8042 Gate-	The keyboard controller failed	If you receive this message after you make
A20 error	its test.	changes in the system setup program, enter
		the system setup program and restore the
		original value(s).

Address Line Short!

C:Drive Error

C:Drive

Failure

Cache

Memory Bad,

Do Not

Enable

Cache

CH-2 Timer

Error

An error in the address decoding circuitry in the memory has occurred.

The hard drive is not working or is not configured correctly.

The cache memory is not operating.

An error is occurring on the timer on the system board.

Reseat the memory modules.

Ensure that the drive is installed correctly in the computer and defined correctly in the system setup program.

See "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance.

See "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance.

CMOS Battery

State Low

CMOS

Checksum

Failure

CMOS System

Options Not

Set

CMOS Display

Type

Mismatch

CMOS Memory

Size

Mismatch

CMOS Time

and Date Not

Set

Diskette

Boot Failure

The system configuration information in the system setup program is incorrect or the battery charge may be low.

Drive A or B is present but has failed the BIOS POST.

Enter the system setup program, verify the system configuration, and then restart the computer.

Ensure that the drive is installed correctly in the computer and defined correctly in the system setup program. Check the interface cable at both ends.

DMA Error

DMA 1 Error

DMA 2 Error

FDD

Controller

Error in the DMA controller on	The keyboard or system board may need to be
the system board.	replaced.
The BIOS cannot	Ensure that the floppy drive or the hard drive is

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