Smart AY Tango Service Manual page 35

• If all voltages are correct, replace the inverter PCB. If the voltages are
incorrect you need to check the cable, power supply and motherboard to
determine the cause.
If the display only illuminated in sections, the backlight is only partially working.
The backlight is made up of 4 fluorescent tubes and any 1 of the 4 could fail
individually. The fault could also be with the inverter.
• Swap 2 adjacent backlight cable connections and confirm whether the fault
follows the actual backlight in the display or the inverter channel.
• If the fault is with the inverter, replace the inverter PCB.
• If the fault is with the backlight itself, swap the display (see section 9).
A few seconds after the backlight illuminates, the display should display a logo
(occupying the full screen) stating "Console Starting. Please wait..." (CSPW)
within a few seconds of startup. If this is not displayed, check that the
motherboard actually booted which is indicated by a short beep. If there is no
beep, the problem is with the motherboard or a power problem. If you hear the
beep but the CSPW image is not displayed (or is displayed as a mess of white
lines or is the wrong size or resolution) there is a problem with the display
hardware or console BIOS. You will need to open the console and proceed as
follows.
NOTE: If you see this "Console Starting. Please Wait...." Logo, this indicates
that your display hardware is OK. If you then don't see the Tango display, the
problem is more likely a Windows driver problem. See section 3 for more
details. If you do see the Tango display but the colours are wrong or it has
vertical stripes over it you will need to try reseating the LVDS cable as
described below.
• Locate the LVDS connector on the LCD. Check and re-seat this connector
making sure there are no damaged pins. Take extra care as this connector
is fragile. Note that the metallic surface of the LVDS connector should be
facing the LCD monitor (the polarity of this connection is difficult to see).
• Locate the LVDS connector on the motherboard (JLVDS). Check and re-
seat this connector making sure there are no damaged pins. Take extra
care as this connector is fragile.
th
14 Oct 2009
Tango Smart Console™ Service Manual
35