Error Beep Sequences During The Boot Rom Process - Acer AcerNote 970 Service Manual

INTRODUCTION ON FLASH BIOS AND BOOT BLOCK
The boot block is used to program and recover the system BIOS when the BIOS is destroyed and
cannot perform normal boot. It also programs the new BIOS into the flash ROM if the item Flash
New BIOS is set to [Enabled].
OPERATING INSTRUCTIONS FOR FLASHING IN A BIOS
There are two ways to flash in a new BIOS:
1. Hardware Jumper A hardware jumper is provided for the BIOS to distinguished from booting
from the boot block or doing normal booting (see V1 GPIO pin 0).
When the jumper is set, the boot ROM will first do POST (only to initialize the necessary
components in the system), then read the BIOS binary file from the floppy disk drive (FDD) to
the memory buffer. The file is (and should be) the first file in a DOS-formatted 1.44MB
diskette. If two FDDs are connected to the system, the first one is used.
After the system finishes reading the file from the FDD, the boot ROM will program the whole
flash ROM except the boot block area. If the flash is successful, the FDD motor powers off
and the system issues beeps to indicate that the programming has been completed. The user
then powers off the system to take away the jumper then power up the system to boot from
the new BIOS.
If errors occur during the boot ROM process, the system issues a beep sequence (see table).
Table 3-5
Description
First file size mismatch
File read error
Flash ROM erase error
Flash ROM programming error
No FDD
When successful, the system gives off the following beep sequence — 2 long, 1 short, 1 long.
2. CMOS Setup An item (Flash New BIOS) allows you to flash in a new BIOS.
When this item is set to [Enabled], the user needs to issue a hardware reset by pressing
the reset button (near the module bay near the rear of the system) or remove all power to
flash the new BIOS. The boot ROM will do POST to initialize the necessary components,
check the FDD and read in the new BIOS binary file (the same as method 1 except that when
a FDD or BIOS binary file read error occurs, the boot ROM will go to POST normal boot.
After the successful beep sequence sounds, the user has to set the Flash New BIOS item
back to [Disabled] after programming the ROM and restarting the system.

Error Beep Sequences During the Boot ROM Process

Error Code
0F1h 1 long beep, 1 short beep
0F2h 1 long beep, 2 short beeps
0E1h 2 long beeps, 1 short beep
0E2h 2 long beeps, 2 short beeps
0D1h 2 short beeps
Beeps