Adjustment - Hitachi CPS317 Service Manual

4. Adjustment

4-1 Before adjusting
4-1-1 Selection of adjustment
When any parts in the table 4-1 are changed, choose
the proffer adjusting items with the chart.
4-1-2 Setting of condition before adjustment
1. Before starting adjustment, warm up the projector
for about 10 minutes.(Blank white)
2. Set Zoom Wide to Max. And project an image with
more than 40 inches in diagonal size.
3. Normalizing the video adjustment.
(Press the [MENU] button of the Remote control
transmitter to display the MAIN menu, and then press
the [RESET] button. And select the [DEFAULT]. Next,
open MAIN menu and press the [ ] key to display
the PICTURE1 menu, then press the [RESET] key to
set to [DEFAULT].)
*note :The MAIN and PICTURE1 menu is not reset
with no signal.
4-2 Ghost adjustment
Signals for internal adjustment
30%
0/255
30%
112/255
Table 4-1: Relation between the replaced part and adjustment
Replaced
Ghost Flicker
part
(Chap.4-2) (Chap.4-3)
Dichroic
optics unit
LCD/LENS
prism
assembly
PWB
assembly
drive
Lamp
unit
assembly
: means need for adjustment.
: means recommended.
4. Set the normal at OPT-WHISPER in the menu.
5. Reset KEYSTONE correction.
6. Perform all adjustments from the Adjustment menu.
Perform the following operations to display the
Adjustment menu.
a. Press the [MENU] button of the Remote control
transmitter (the Setup menu will appear).
b. Next, press the [RESET] button one time. And
press the [RESET] button again for 5 seconds
or more (the Adjustment menu will appear).
Adjustment procedure
1. Use DAC-P - GHOST - R: in the Adjustment menu
to adjust so that R color ghost is at a minimum.
(Set the adjustment value to default, and then raise the
value. When a ghost appears to the left of a vertical
line, reduce the value by 2 steps. :CPS317/EDS3170 only)
2. In the same way, use DAC-P - GHOST-G: in the
Adjustment menu to adjust so that G color ghost is
at a minimum.
3. In the same way, use DAC-P - GHOST-B: in the
Adjustment menu to adjust so that B color ghost is
at a minimum.
Adjustment
White Color
PSIG/NRSH
balance uniformity
(Chap.4-4)
(Chap.4-5) (Chap.4-6)
: means not need for adjustment.
7