Sanyo PLC-ET30L, Service Manual

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Optical Adjustments
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.
. Select the "Test pattern" from the "Setting" menu.
3. Press the SELECT button. The test pattern menu ap-
pears on the screen.
4. Select a pattern name and press SELECT button.
To cancel the test pattern, press any of the buttons.
Color
Gradation 1
Gradation 2
Gradation 3
Gradation 4
All white
All black
Cross
Setting
Test pattern
1. Each adjustment requires hex wrenches and slot screwdrivers.
. Set the motorized lens shift to the center position (horizontal and vertical) with Lens Shift Button.
Lens shift arrow on screen turns red at center of lens shift.
3. When adjusting optical components adjustments, using
Standard Zoom Lens is recommended.
4. When adjusting the optical axis adjustment, follow the fol-
lowing procedure.
a) Disconnect the three flexible cables of the LCD panels
from the main board.
(Do not touch the electrode of flexible cables.)
b) As shown in a figure right, set the main board to the
upright position.
CAUTION: Do not short main board with the chassis. Pro-
tect main board with necessary isolation ma-
terials from shorting.
Before Adjustment