Toshiba TW40H80 Service Mode Information
USE THIS INFORMATION AT YOUR OWN RISK. I DO NOT RECOMMEND ADJUSTING ANYTHING OTHER THAN THE CONVERGENCE UNLESS YOU ARE QUALIFIED. WRITE DOWN ALL SETTINGS BEFORE CHANGING ANYTHING.
Click on the following links for images and instructions taken directly from the Toshiba TW40H80 service manual.
How to enter into the service mode and key functions
Selecting and adjusting service mode items
Built-in test signal selection
Service mode convergence adjustment