Chapter 2 - Service and Troubleshooting
CTV-41 30
Protection
The protect circuits are described in detail in Chapter 1 of this manual.
Table 2-1 lists the protect events that could possibly occur and suggested
locations for their causes. Troubleshooting flowcharts are also located later
in this chapter to assist the technician in isolating the cause of a protect
event. Although the self-diagnostics feature is helpful in troubleshooting
a unit, they are not 100% reliable and may be caused by more than 1
component.
NOTE: Whenever the unit shuts down due to a protect event the
remote commander will not function. In previous Sony chassis
designs the remote could be used to cycle the unit back on. The unit
would shut down again, of course, if the problem still existed. In the
WAX3 chassis the power must be cycled by using the manual power
button.
TABLE 2-2
SELF-DIAGNOSTICS TABLE
# OF RED LED
BLINKS EVENT POSSIBLE CAUSE NOTES
2 REG 12V FAILURE POWER SUPPLY BOARD PAGE 1 OF DIAGNOSTICS
3
2.5V FAILURE TO
TRIDENT IC BU1 BOARD PAGE 1 OF DIAGNOSTICS
4 D 1.OV FAILURE BU1 BOARD PAGE 1 OF DIAGNOSTICS
5 PANEL 12V BU1 BOARD BU1 TO PANEL TCON 12V
6 INVERTER ERROR
INVERTER (26/32")
D1, D2 BOARDS (40/46")
LISTED AS "BACK_LIGHT" IN
DIAGNOSTICS PAGE 1
7 TEMPERATURE ERROR
BU1 BOARD (S MODELS)
BH BOARD (D/XBR MODELS) PAGE 2 OF DIAGNOSTICS
8 SPEAKER PROTECT BU1 BOARD PAGE 2 OF DIAGNOSTICS
9 FAN ERROR NOT USED
NOT USED BUT APPEARS IN
PAGE 2 OF DIAGNOSTICS
10
MAIN MICRO COM
ERROR BU1 BOARD PAGE 2 OF DIAGNOSTICS
11 TRIDENT IC FAILURE BU1 BOARD PAGE 2 OF DIAGNOSTICS
12 BU1 TO BH COM ERROR
BU1 BOARD OR BH
BOARD PAGE 2 OF DIAGNOSTICS
13 BALANCER ERROR LCD PANEL
NOT USED IN 26/32" MODELS
PAGE 1 OF DIAGNOSTICS
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