Mitsubishi Electronics WS-48613, WS-65513 Chapter Power Supply, Low Energy Mode Activation

Chapter 3

Power Supply

From the above diagram, it is apparent that the V23 Chassis has four Power Supply Operational Modes.

1)Low Energy Mode

2)Standard Standby Supply Mode.

3)Time Shift Recording Mode.

4)Conventional PTV On Mode.

Low Energy Mode

When the Low Energy Mode is activated the TV uses less than 3 Watts while the set is Off. The Low Power Standby Supply generates a 9VS supply. Three addi- tional supplies are derived from the 9VS supply, 5VS, 3.3V-ES and 3.3VS-1.

In the Low Energy Mode the set is booted up each time the TV is switched On. When switched On, the LED will flash for approximately one minute before the TV powers On.

Low Energy Mode Activation

The Low Energy Mode is activated from the user's On- screen Menus. To activate the Low Energy Mode:

1)Press "MENU".

2)Select the Setup Menu (Shown in Figure 3-1).

3)Use the Remote Direction Keys to activate, or deactivate the Low Energy Mode.

These supplies furnish power for the PTV Control Cir- cuitry. This is the only circuitry active in the Low En- ergy Mode when the PTV is Off.

Low Energy Standby Regulator

Figure 3-2illustrates the Low Energy Mode Regulator Circuitry. IC9A10 is the same is the same type of regu- lator used in the V20.

3-1