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Veriton Z2610G/Z2611G/Z2620G/Z2621G AIO Computer Service Guide
System Internal Inspection
1.
Turn off the system and all the peripherals connected to it.
2.
Unplug the power cord from the power outlets.
3.
Unplug the power cord from the system.
4.
Unplug all peripheral cables from the system.
5.
Place the system unit on a flat, stable surface.
6.
Remove the system covers.For instructions on removing system covers, refer to “System Disassembly”.
7.
Verify that components are properly seated.
8.
Verify that all cable connectors inside the system are firmly and correctly attached to their appropriate
connectors.
9.
Verify that all components are Acer-qualified and supported.
10.
Replace the system covers.
11.
Power on the system.
12.
If the problem with the system is not evident, you can try viewing the POST messages and BIOS event
logs during the system startup.If the cause of the failure is still can not be determined, review the POST
messages and BIOS checkpoints during the system startup.
Beep Codes
Beep codes are used by the BIOS to indicate a serious or fatal error to the end user. Beep codes are used
when an error occurs before the system video has been initialized. Beep codes will be generated by the
system board speaker, commonly referred to as the PC speaker.
AMIBIOS displays the checkpoints in the bottom right corner of the screen during POST. This display method
is limited, since it only displays checkpoints that occur after the video card has been activated.
Not all computers using AMIBIOS enable this feature. In most cases, a checkpoint card is the best tool for
viewing AMIBIOS checkpoints.
Checkpoints
A checkpoint is either a byte or word value output to I/O port 80h.The BIOS outputs checkpoints throughout
bootblock and Power-On Self Test (POST) to indicate the task the system is currently executing. Checkpoint
sare very useful in aiding software developers or technicians in debugging problems that occur during the pre-
boot process.
Viewing BIOS checkpoints
Beep Symptom
Cause and Description
One short beep
System is ready.
System is OK.
Continuous one long beep
Memory not installed or memory error.
One long beep and two short beeps then
repeat.
VGA not installed or VGA error.
Graphics card error/not installed, graphics card memory
error or graphics card BIOS checksum error.
One long beep then one short beep
BIOS damaged.
BIOS is damaged, BIOS POST jumps to Boot Block to
execute the default procedures.
Two short beeps
CMOS damaged.
CMOS checksum error or CMOS battery loss occurs.
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