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A-1 Trouble Shooting Techniques
A-1-1 No screen after pressing front power switch
A-1-1-a Power supply fan not spinning:
*
Check power source.
*
Check power cord connection.
*
Check if all power connectors inside the chassis have been properly connected.
*
Check the ATX power switch cable to SBC(or motherboard) have been properly con-
nected
*
Check main power switch on power supply (PS-2 power supply for BP-7 model).
*
Check the power-on Cable between SBC and backplane (there is a power- on cable
between SBC and back plane, check the cable is on the right position and direction)
*
Check voltage selection if there is one on the power supply unit.
A-1-1-b Power supply fan is spinning and LCD has no backlight
(Backlight can be observed along the top and bottom edge of the LCD screen.)
Check if the power supply to the LCD screen is connected.
A-1-1-c Power supply fan is spinning and LCD has backlight and power LED is on
Check if the video cable is properly connected.
If the system seems to be booting up (hard disk drive cranking up) then detach the video cable
to the internal LCD screen and attach to an external good CRT type monitor. If external moni-
tor has video then it is a bad LCD screen or bad internal cabling.
If the system does not seems to be booting up (no hard disk activity) and no video when con-
nected to external good CRT monitor, then check system for shorts, reseat video and all other
add-on cards. Check memory module installation. Listen for error beeps from the
motherboard. If all failed then remove system from the enclosure and check motherboard
subassembly with an external set of power supply and display to isolate the problem. Check if
the motherboard is not shorted to the standoff. If all failed, call your vendor for support where
this enclosure was purchased.
A-1-2 LCD screen shows garbage or bad characters or vertical/
horizontal color lines or bar
Detach the video connection to the LCD screen and attach to a good external CRT type
monitor. If the external CRT monitor shows normal video then it could be compatibility issue.
Replace the VGA card and use a different VGA card and try it again with the LCD screen. If it
still failed then it could be a bad conversion board or loose cable inside the LCD subass embly.
If the ex ternal CRT monitor shows similar garbage character then it is a bad video card.
(please also check the pins in the 15-pin D-type connector are aligned to the hole of the VGA
card)
PWS-1409/1419 User's Manual
46
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Table of Contents
Troubleshooting
