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9-1
Chapter 9
Troubleshooting Tips
Use the following tips when troubleshooting the source
of a problem in the V23 chassis.
Using The Front Panel LED
The Front Panel LED helps isolate the cause of the
following problems.
• The TV will not turn On.
• The TV turns On, and then Shuts Off.
If the TV will not turn On, the LED response indi-
cates the possible cause of the problem. Table 9-1 lists
the possible LED response when this problem occurs.
When the TV turns On and then shuts Off, the LED
Diagnostic Error codes help isolate the problem. This
is the same LED Diagnostic featured on some previ-
ous model TVs.
Figure 9-1 shows the LED Error Code Activation Pro-
cedure, an is describe in the following:
1) With the TV Off
2) Press and hold the front panel "MENU" and
"DEVICE" buttons for 5 seconds.
3) The LED will flash the Error Code indicating
what caused the TV to shut Off.
4) The Error Code will be repeated 5 times.
5) When the LED stops flashing the mode is
automatically terminated.
Reading the Error Codes
The Error Codes are two digit numbers. The LED:
• Flashes the value of the most significant digit
(MSD).
• Then there is a pause.
• Flashes the value of the least significant digit
(LSD).
• The Error Code is repeated 5 times.
As an example, Figure 9-2 illustrates the LED drive
for Error Code "23". Table 9-2 lists the Error Codes
and their possible cause.
LED Indications
Conditions
Probable Cause
Off After AC is applied No Standby Power or TV µPC not running
Fast Blink for 70 sec. After AC is applied Normal - DM µPC is booting up.
Fast Blink for 70 sec. Each time TV is switched On Power Save Mode is activated
Fast Blink (Doesn't stop) After AC is applied TV µPC is running, but DM failed to boot up
Slow Blink Set is Off Normal - Timer is set for Auto Turn On
Table 9-1: Power LED Indications