Toshiba TDP-MT8, Service Manual

Page: 66 / 97

TDP-MT8 Service Guide 66
2. Press the Menu
button. Navigate to
the
Settings menu.
Select Service . In
Service menu, select
Service Info. In the
About message box,
check the software
version.
3. Return to the Service
menu. Select Factory
Reset . Press the
menu button to close
the menus.
Verify the keys are not sticky.
The next step is to observe 3
computer images. These will
confirm that the computer
input works properly, and will
test image quality.
On the keypad, press the
Source button to select
Computer.
Image #1: Focus Test Image
1. Turn off any local
light.
2. Turn the zoom ring to
make the smallest
image.
3. Focus the image so
the middle icon is
clearly focused.
4. Focus the image on
the 4 green squares.
5. After focusing on the
green squares on the
middle icon, turn the
zoom ring to make
the largest image,
then repeat the focus
tests.
Verify that all four corner icons have clear resolution
Verify that the white space is visible on all 5 bar/line icon areas (between
green).
Verify that the image focuses through the full zoom range.
Verify that the image remains in focus when the Image Shift knob is
turned.
Image #2: Color Ramp
Project the Color Ramp
image.
Verify there are no missing parts of the ramp.