Optical Adjustments; Focus Adjustment - Sanyo PLC-EF10EA Service Manual

Optical Adjustments

FOCUS ADJUSTMENT

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.
[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".
G-FOCUS ADJUSTMENT
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
button to the center of screen is in sharp fucus.
3. Press the ZOOM
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
and (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 , ,
Fig.2.
Insert paper to block
light
Red
LCD
Panel
A
or
button to "Wide" position (to
,
and shown in Fig.1a and
A
A
Green
A
LCD Panel
6. Press the ZOOM
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.
,
Blue
LCD
Panel
Fig.1a
-35-
button to the "Tele" position (to