Sanyo PLV-WF20, Service Manual

Page: 51 / 238

-51-
Optical Adjustment
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 (LNS-S03) is recommended.
4. When adjusting the optical center adjustment, follow the following procedure.
a) Disconnect the connectors K8E, K8N, K8S, K3A, K3B, KR, KG, KB and 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.
c) Replace the polarized glass unit with the adjustment
tool. This Adjustment tool can be ordered as a service
part. The part no. is shown on next page.
CAUTION: Do not short main board with the chassis. Pro-
tect main board with necessary isolation mate-
rials from shorting.
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.
Before Adjustment
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
Test pattern
K8E
K8N
K8P
Main board
Open upper way.
Setting
Test pattern