Toshiba TDP-P6, Manual

Page: 68 / 75

TDP-P6 Service Manual 68
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
Computer 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, and
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.
Verify that the bars are not flashing.
Verify that the transitions from light to dark are smooth and gradual.