Sanyo TV Service Mode

The procedure for entering the service mode on a Sanyo TV:

1. Press/hold "Menu" button on the TV front controls.
2. Point the remote control to the TV. Press "2" button on the remote. The service menu will appear on the TV screen.
3. Press Channel +/- to select adjustment item.
4. Press Volume +/- to adjust data/settings.
5. To exit: Press "Menu" on TV front control.

The service mode allows the TV technician to adjust picture geometry, RGB settings, TV features and hardware configurations. 

Always record the present settings before adjustment so you can return the settings should adjustments causes more problems.

It would be easier for you to set adjustments if you have a record of the factory default settings for the particular model of TV you are working on.

Philips TV Service Mode

To access service mode in a Philips TV, press on the remote control keys:
0-6-2-5-9-6-OSD(i+) or
0-6-2-5-9-6-MENU.

The service mode will allow you to adjust picture Geometry and White Tone via remote.

You can also adjust the option codes to configure drivers for the hardware components particularly the I2C devices..

Kolin TV Service Mode

Chassis	Remote codes	To exit
I-Chassis	SLEEP-MUTE-DSP-MENU	DSP or SLEEP
K-Chassis	SLEEP-PIC-DSP-MENU. Press MENU to navigate pages.	SLEEP
M-Chassis	DSP-SLEEP-PIC. To select adjustment menu use CH+/CH- buttons. To enter the adjustment menus, use VOL+/VOL-	MENU

Before doing adjustments, list down the adjustment items and their corresponding data so you can return the data to previous settings in case the new settings result to more problems.