Technology flow, judge the computer failure of industrial all-in-one machine according to the alarm sound!

Technology flow, judge the computer failure of industrial all-in-one machine according to the alarm sound!

We should be more familiar with computers. There will be different sounds whether we turn on, turn off or do other operations. This voice we ordinary people will not be aware of any problems, but for professional technicians, the critical moment can be of great help. For example, when the machine breaks down, it is impossible for us to disassemble the machine to check the devices one by one. Professional technicians can judge where the problem occurs through the alarm sound of startup. Specifically, how to judge the computer fault of industrial all-in-one machine through the alarm sound. This is actually not so complicated. Here is a complete set for your reference:

（1）AMI BIOS

1 short - memory refresh failed

2 - short memory ECC check error

3 short - system basic memory (the first 64K) check failed

4 short - system clock error

5 short - central processing unit (CPU) error

6 short - keyboard controller error

7 short - system real mode error, unable to switch to protection mode

8 short - display memory error (display memory may be damaged)

9 short - ROM BIOS check and error

1 long 3 short - memory error (memory damaged, please replace)

1 long and 8 short - display test error (the display data cable is loose or the display card is not firmly inserted)

（2）Award BIOS

1 short - the system starts normally

2 short - general error, please enter CMOS setup to reset the incorrect option

1 long and 1 short - ram or motherboard error

1 long 2 short - display error (display or display card)

1 long 3 short - keyboard controller error

1 long and 9 short - flash RAM or EPROM error on the motherboard (BIOS damage) keeps ringing (long sound) - the memory is not plugged firmly or damaged

Keep ringing - the power supply, display and display card are not connected properly, repeated short ringing - power failure, no sound, no display - power failure

（3）Phoenix BIOS

1 short - the system starts normally

3 short - system power on self-test initialization (post) failed

1 short 1 short 2 short - main board error (main board damaged, please replace)

1 short 1 short 3 short - the main board battery is dead or CMOS is damaged

1 short 1 short 4 short - ROM BIOS verification error

1 short 2 short 1 short - there is a problem with the system real-time clock

1 short 2 short 2 short - DMA channel initialization failed

1 short 2 short 3 short - DMA channel page register error

1 short 3 short 1 short - memory channel refresh error (the problem range is all memory)

1 short 3 short 2 short - basic memory error (memory corruption or Ras setting error)

1 short 3 short 3 short - basic memory error (most likely memory corruption on DIMM slot)

1 short 4 short 1 short - an error occurs at an address in the basic memory

1 short 4 short 2 short - there is a parity error in the system basic memory (the first 64K)

1 short 4 short 3 short - EISA bus sequencer error

1 short 4 short 4 short - EISA NMI port error

2 short, 1 short and 1 short - the system basic memory (the first 64K) check fails

3 short 1 short 1 short - the first DMA controller or register has an error

3 short 1 short 2 short - the second DMA controller or register has an error

3 short 1 short 3 short - Main interrupt processing register error

3 short, 1 short and 4 short - sub interrupt processing register error

3 short 2 short 4 short - there is a problem with the keyboard clock. Reset it to not installed in CMOS to skip post

3 short 3 short 4 short - ram error or no ram on the display card, which is not a fatal error

3 short 4 short 2 short - the display data cable is loose or the display card is not inserted firmly or the display card is damaged

3 short 4 short 3 short - ROM BIOS of display card is not found

4 short 2 short 1 short - system real-time clock error

4 short 2 short 3 short - there is an error in the gate A20 switch in the keyboard controller (8042), and the BIOS cannot switch to the protection mode

4 short 2 short 4 short - protection mode interrupt error

4 short 3 short 1 short - memory error (memory corruption or Ras setting error)

4 short 3 short 3 short - system second clock error

4 short 3 short 4 short - real time clock error

4 short 4 short 1 short - serial port (COM port, mouse port) fault

4 short 4 short 2 short - parallel port (LPT port, print port) error

4 short, 4 short, 3 short - error in math coprocessor (8087, 80287, 80387, 80487)