Mitsubishi Electronics WS-55513, WS-65513 Chapter Troubleshooting Tips, Using The Front Panel LED

Chapter 9

Troubleshooting Tips

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

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 9-1lists 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 9-1shows 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 9-2illustrates the LED drive for Error Code "23". Table 9-2lists the Error Codes and their possible cause.

9-1