Ref.: MEL-WA(3D HCV) - OM Ver.1.7
129
9.3.
DESKTOP COMPUTER & PERIPHERALS
Sl.
No.
Trouble
Causes
Remedies
1
When System is switched
ON, no beep sound and
No display
Power socket problem or
loose connection in the
Power socket plug point
Insert the equipment’s Power
cord to another Plug point’s
power socket & check it
Still problem persists
UPS may be defective. i.e,
No output from the UPS
Connect a Test lamp at the
output socket of UPS and ensure
whether UPS is OK. If not
replace the UPS
Loose connection in Fuse /
Fuse may be blown off.
Check the status of Fuse and
replace it
All the external
parameters have been
checked. But the display
problem remains as it is
ON/OFF Switch or Power
supply board may be faulty
Get the problem solved through
Service Engineer
2
When equipment is
switched ON, only Audio
sound is noticed. But no
display in Monitor
Monitor may be switched
OFF or Power supply to
Monitor may got
disconnected.
Switch ON the Monitor and
Check the Power LED is ON. If
not, replace the Power cord.
Monitor Power LED
blinking in Standby mode.
But no display
Loose connection in the
Monitor data cable
Switch OFF the system, remove
the 15 Pin data cable and
reconnect it to the system with
correct polarity
No loose connection in
Data cable. Still the
display problem persists
Monitor may be defective
Replace a monitor from other
computer and check for it
Computer’s Internal system
may be defective
Get the problem solved through
Service Engineer
3
Electrical Shock observed
in the system
No Earthing or loose contact
in the Earthing point of
switch board
Get the problem solved through
Qualified personnel
Earthing terminal in Power
cord with intermediate cut
Replace the Power cord
4
Keyboard error message
displayed when system is
switched ON
Any keys in the Keyboard
may be in pressed condition
Switch OFF the system and
release the struck keys and
again switch it ON
Keyboard may be defective
Replace with any other PS/2
type keyboard or get the problem
solved by Service Engineer
5
Multimedia speaker not
working
Input supply to speaker may
be disconnected
Remove the plug point and re-
fix it properly and ensure that
the Green light in the Speaker
is switched ON
Speaker defective
Replace the Speaker
6
Demo mode message
displayed in Alignment
screen
USB cable from the
horizontal beam may be
disconnected
Camera is not detected
Re-connect it properly.
USB port in the Motherboard
may be defective. Connect to
other available USB port and
check.
USB cable may got damaged.
