Sanyo PLC-WM4500, Service Manual

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WArNING : uSe uV rAdIAtIoN eYe ANd SKIN ProtectIoN
durING SerVIcING
cAutIoN: to prevent suffer of uV radiation, those adjustments
must be completed within 25 minutes.
CAUTION:
When adjusting the optical components, do not insert any materials into the
optical block for blocking the light. Or the optical block may be damaged by
overheating or scratching the parts.
To select the internal test pattern
1
Press the MENU button.
2
Select the "Test pattern" from the "Setting" menu.
3
Press the SELECT button. The test pattern menu appears on the screen.
4
Select a pattern name and press SELECT button.
To cancel the test pattern, press any of the buttons.
1
Each adjustment requires hex wrenches and slot screw-
drivers.
2
Move the projection lens position to center by pressing
the LENS button for more than 5 seconds.
3
When adjusting optical components adjustments, using
Standard Zoom Lens is recommended.
4
When adjusting the optical axis adjustment and contrast
adjustment, use the internal test pattern. To select the
internal test pattern, see the item below.
* Do not disconnect the sockets on the main board oth-
erwise the power protection function will operate to
shutdown the projector.
5
These adjustments should be taken in the darkest room
to adjust precisely.
CAUTION: Do not short main board with the chassis.
Protect main board with necessary isolation
materials from shorting.
Before Adjustment
Optical Adjustment
Condenser lens
adjustment
Relay lens (R)
adjustment
Mirror (B) adjust-
ment
Color
Gradiation 1
Gradiation 2
Gradiation 3
Gradiation 4
All white
All black
Cross
Test pattern