STEP BY STEP COMPUTER FAULT FINDING
1-CHECK POWER CABLE
IF POWER CABLE IS UNPLUG THEN NO POWER WILL BE UPS MONITOR AND CPU ,NOW PLUG POWER CABLE PROBLEM WILL SOLVE.
2-CHECK UPS IS ON OR NOT
CHECK UPS POWER BUTTON IS ON OR NOT.
3-CHECK CPU CABINET LED STATUS
THERE ARE TWO LED IN CABINET
A-HDD LED
B-POWER LED
IF AFTER POWER BUTTON PRESSING NO LED GLOW CHECK SMPS
IF POWER LED IS GLOWING HEAR BEEP SOND COMMING FROM CABINET.
BEEP CODE ARE
Beeps
|
Error
Message
|
Description
|
| 1long, 2 short |
Video adapter error |
Either video adapter
is bad or is not seated properly. Also, check to ensure the
monitor cable is connected properly. |
| Repeating (endless loop) |
Memory error |
Check for improperly
seated or missing memory. |
| 1long, 3short |
No video card or bad
video RAM |
Reseat or replace the
video card. |
| High frequency beeeps
while running |
Overheated CPU |
Check the CPU fan for
proper operation. Check the case for proper air flow. |
| Repeating High/Low |
CPU |
Either the CPU is not
seated properly or the CPU is damaged. May also be due to excess
heat. Check the CPU fan or BIOS settings for proper fan speed. |
4-CHECK KEBOARD NUMLOCK LED STATUS
IF NUM LOCK KEY IS GLOWING ON OFF AFTER PRESSING KEY THAT MEANS SIGNALS ARE COMMING FROM CPU AND PROBLEM IS IN MONITOR VGA CABLE & DISPLAY CARD CHECK STEP BY STEP .
5-HEAR BEEP SOUND COMMING FROM CPU
1 Continuous Beep
One continuous beep isn't
an officially listed Phoenix beep code but I know of several instances
of this occurring. In at least one case, the solution was to reseat the
CPU.
1 Long Beep, 2 Short Beeps
One
long beep followed by two short beeps indicates that there has been a
checksum error. This means that there is some kind of motherboard
issue. Replacing the motherboard should fix this problem.
1-1-1-1 Beep Code Pattern
Technically, a
1-1-1-1 beep code pattern doesn't exist but I've seen it and many
readers have too. Most often, it's a problem with the system memory.
This Phoenix BIOS issue is usually corrected by replacing the RAM.
1-2-2-3 Beep Code Pattern
A
1-2-2-3 beep code pattern means that there has been a BIOS ROM checksum
error. Literally, this would indicate an issue with the BIOS chip on
the motherboard. Since replacing a BIOS chip is often not possible,
this Phoenix BIOS issue is usually corrected by replacing the entire
motherboard.
1-3-1-1 Beep Code Pattern
A
1-3-1-1 beep code pattern on a PhoenixBIOS system means that there has
been an issue while testing the DRAM refresh. This could be a problem
with the
system memory, an expansion card, or the motherboard.
1-3-1-3 Beep Code Pattern
A
1-3-1-3 beep code pattern means that the 8742 keyboard controller test
has failed. This usually means that there is a problem with the
currently connected
keyboard but it could also indicate a motherboard issue.
1-3-4-1 Beep Code Pattern
A
1-3-1-1 beep code pattern on a PhoenixBIOS system means that there is
some kind of issue with the RAM. Replacing the system memory usually
fixes this problem.
6-CHECK VGA CABLE
IF MONITOR SHOWING SIGNAL MESSAGE CHECK VGA CABLE.
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