Adjustments In Replacement Of Prism; Set The Factory Mode; Vcom Adjustment; Adjustment Of 3Dγ (Outline) - Sony VPL-X2000U Service Manual

3-5. ADJUSTMENTS IN REPLACEMENT
OF PRISM
Perform the following adjustments after replacement of the prism.

3-5-1. Set the factory mode

When "ENTER", "ENTER", "N" , and "ENTER" are pressed
in the service mode, the screen will ask "do you want to set the
factory mode". Set the factory mode according to the screen.

3-5-2. VCOM Adjustment

The bottom most menu item on the main menu is the Device
Adjustment Menu. Set this menu and select "C-P DRV".
Perform V COM adjustments for each of the item "V COM/
R", "V COM/G", and "V COM/B".
In the above mode, as the built-in test pattern will be output,
adjust so that flicker is minimum throughout the whole screen.
3-5-3. Adjustment of Polarization Plate
Select "BB-GAMMA" on the device adjustment menu.
This will display "LEVEL 0" and "POSITION ALL", and the
whole screen will become black. In this state, adjust the re-
spective polarization plate until the black becomes the darkest.
3-5-4. Adjustment of 3Dγ (Outline)
The principle of 3Dγ is described before the adjustment of 3Dγ.
3Dγ is like a function which can individually adjust W/B at a
total of 180 points brightness 9 levels, horizontal direction 5
points, vertical direction 4 points (9*5*4=180 points).
So altogether 540 adjustments (180*3 (RGB)=540) will be
required, which is in practice not possible. The following
describes a simpler method.
First the "BB-GAMMA" menu consists of the following hi-
erarchy.
BB-GAMMA LEVEL 0
LEVEL 1
:
:
LEVEL 8
When adjusting a certain LEVEL, automatically the internal
signal (flat field) of that level will be displayed.
3-4
POSITION ALL R
G
B
POSITION 1
POSITION 2
:
:
POSITION 20
3-5-5. Adjustments of 3Dγ (Adjusting Method)
1. First input "BB-GAMMA".
2. Set LEVEL to 1.
3. Study the uniformity of the whole screen, and locate the
areas where uniformity is poor.
4. Changing "POSITION" to 1, 2, or 3 will display the cur-
sor. The position of the cursor is the position which will
be adjusted.
Move the cursor to the area with poor uniformity.
5. Move "R" and "B" up and down, and adjust so that the
uniformity is the same as the other areas.
6. Set LEVEL 2.
7. Like steps 3, 4, and 5, adjust the areas with poor uni-
formity.
8. Adjust up to LEVEL 7.
9. Study the test pattern from LEVEL 1 to LEVEL 7, and
if no problems, return to the first hierarchy, adjust the
device, and save the data in SAVE TO MEMORY.
Precautions:
1. Basically adjust RED and BLUE only without changing
GREEN.
2. Do not change POSITION ALL.
3. Do not adjust LEVEL 0 and LEVEL 8.
4. To set back factory settings should adjustments fail, skip
"SAVE TO MEMORY", press the STANDBY key, and
turn off the power. All the adjusted data will be set back
to factory settings.
Factory settings cannot be set back however if "SAVE
TO MEMORY" has already been implemented. So check
the picture quality carefully prior to implementing
"SAVE TO MEMORY".
5. For zoom lens, the uniformity will change slightly ac-
cording to the zoom position.
As uniformity will change slightly according to the F
number of the lens, perform the adjustments on the pro-
jection system under the normal using conditions.
6. Do not change other items in the Device Adjust Menu.
The device adjust menu contains important parameters
for machine operations.
Unnecessary operations will result in "no image" and
"abnormal image".
"Factory reset" cannot be performed on device adjust
menu items.
(Implementing SAVE TO MEMORY will completely
overwrite the data.)
Do not change data unnecessarily.