Sanyo PLC-EF12B, Service Manual

Page: 36 / 112

-36-
■
Optical Adjustments
[Before adjustment]
- Input a grid pattern signal.
- Adjustment requires a 2.0mm hex driver and a slot screwdriver. Remove cabinet cover following to “Mechanical
Disassemblies”.
1. Insert paper etc. in Red and Blue panel to block the
red and blue light so that only green light is projected.
2. Press the ZOOM button to the “Tele” position (to
reduce image size) and press the FOCUS or
button to the center of screen is in sharp fucus.
3. Press the ZOOM button to “Wide” position (to
increase image size).
4. Loosen the 4 screws A with the 2.0mm hex driver
(Fig.1a).
5. Insert the slot type screwdriver in the slots
➀
,
➁
,
➂
and
➃
(Fig.1a) and gently turn the screwdriver until
the each corner of screen is in sharp focus. The rela-
tion of adjustment points and screen corners are indi-
cated with
➀
,
➁
,
➂
and
➃
shown in Fig.1a and
Fig.2.
6. Press the ZOOM button to the “Tele” position (to
reduce image size) and check to see if sharp focus is
retrained. If in sharp focus, adjustment is completed.
If not, repeat steps 2 to 6.
7. Tighten the 4 screws A and securely attache the
Green panel unit.
G-FOCUS ADJUSTMENT
Insert paper to block
light
Blue
LCD
Panel
Red
LCD
Panel
Fig.1a
A
➁
➀
➃
Green
LCD Panel
When you replace all of LCD panels such as disassembly cleaning, etc., first adjust the G-LCD panel as the stan-
dard reference, after that, adjust the R-LCD panel and B-LCD panel focus adjustments.
When you replaced one of the LCD panels, adjust only the replaced LCD panel focus to put the un-replaced LCD
panels focus.
A
A
A
➂
FOCUS ADJUSTMENT