Toshiba 42CV500P Service Manual page 120

Key Function in the Service Mode
The following key entry during display of adjustment menu provides special functions.
CAUTION: Never try to perform initialization unless you have changed the
memory IC.
Test signal selection
Selection of the adjustment items
Change of the data value
Adjustment menu mode ON/OFF
Initialization of the memory (QA02)
Reset the count of operating
protect circuit to "00"
Turn off I2C bus communication
"RCUT" selection
"GCUT" selection
"BCUT" selection
"CNTX" selection
"COLC" selection
"UVTT" selection
Automatic A/D Adjustment
(PC, Component, Composite (PAL, NTSC))
Self diagnostic display ON/OFF
Selecting the Adjusting Item
Every pressing of CH
order of table below. (
CH
Volume
MENU button (on TV)
CALL + CH
CALL + CH
CALL + Volume
1 button
2 button
3 button
4 button
5 button
6 button
7 button
9 button
button in the service mode changes the adjustment items in the
button for reverse order)
button (on remote control)
(on TV or remote control)
+/- (on TV or remote control)
button on TV
button on TV
+ button on TV