Chapter 1 - Features and Circuit Descriptions
CTV-41 20
Communications Errors
Another feature of the WAX 3 chassis is the monitoring of communications
between specific devices. Not shown on the previous block diagrams are
the following protect events that could occur.
Main Micro Communication Error
The unit will shut down and the power LED will blink in groups of 10. The
BU1 board must be replaced to rectify this.
Trident Video Process Failure
The unit will shut down and the power LED will blink in groups of 11 The
BU1 board must be replaced to rectify this.
BH Board Communication Error
Unique to the KDL32XBR4 and KDL40D3000 that utilize frame rate
doubling, the communication between the BH board and the LCD panel
TCON is monitored and the unit will shut down if this communication fails.
The power LED will blink in groups of 12.
BU1 to Panel (S series models) or BU1 to BH (XBR4 and
D3000 series) Communication Error
If either of these events occurs, the power LED will blink at one-half second
intervals continuously. The unit will not shut down. The backlights will be
lit but there will be no video display (including OSD graphics). This can be
caused by an unplugged LVDS cable or a failure of BU1 or BH board or a
defective panel (TCON failure).
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