ViewSonic PJ650, Service Manual

Page: 6 / 62

4
PJ650 (C3XM4)
5
PJ650
4-2 Ghost adjustment
Signals for internal adjustment
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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.)
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.
4. Adjustment
4-1 Before adjusting
4-1-1 Selection of adjustment
When any parts in the table 4-1 are changed,
choose the proper adjusting items with the chart. Table 4-1: Relation between the replaced part and adjustment
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: means need for adjustment. : means not need for adjustment.
: means recommended.
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 1m (40 type) 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. 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 MAIN 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).
ViewSonic Corporation PJ650