- 4 -
Adjustment purpose
[C/W motor drive circuit]
2. C/W delay
Symptom when
incorrectly adjusted
Measuring
instrument
Test point
EXT trigger
Measurement
range
Input signal
Input terminal
To adjust the timing of the C/W segment (R, G, B, and W) and that of the
DMD driving signal.
Incorrect color. For example, the pure red is displayed with a tinge of
pink or orange.
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Shown in the table below
COMPUTER IN terminal
* Carry out this adjustment only when the MAIN PCB ASSY,optical unit or color
wheel ASSY is replaced.
* Perform at least 4-hour aging after the completion of this adjustment.
* Use the FUNCTION menu for this C/W delay adjustment.
1) Select [LANGUAGE] of the OPTION menu.
2) Press the [AUTO POSITION], [ENTER], and [AUTO POSITION] buttons
on the remote control in order. The FUNCTION menu will be displayed.
1. Set the following items for the picture quality.
CONTRAST . . . . . . . . . . . . . . .0
BRIGHTNESS . . . . . . . . . . . . .0
COLOR TEMP . . . .STANDARD
2. Project an image on the screen.
3. Display the FUNCTION menu and select [C/W Delay]. The built-in red pattern
will be displayed.
Adjustment range
: 0 to 0359
Initial value
:
84
4. Adjust the value for correct red.
5. The newly entered value is saved automatically. Press the [MENU] button to
exit the FUNCTION menu.
6. Supply the adjustment signal (***_WRGB_64scale signal). *** shows SVGA or
XGA.
7. Make sure that all the tones of the signal are displayed in correct colors.
If any tone is displayed incorrectly, repeat from step 3 to step 5.
Pattern
Built-in red pattern
SD420U
SVGA_WRGB_64scale signal
SD430U
XD420U
XGA_WRGB_64scale signal
XD430U
XD435R
XD435U-G
