Hitachi C43-FD8000, Service Manual

Page: 42 / 250

42
SERVICE ADJUSTMENTS
(5) In case of R lens.
Set the position where the chromatic aberration change from red to crimson.
As shown below, observe the vertical bright line and adjust lens focus where
the crimson or red chromatic aberration slightly appears inside and crimson or
red outside (reference value : 1~3mm) at the point specified in table below.
Change the signal and fine-adjust in the same way as the G lens.
OPTICAL FOCUSING ADJUSTMENT RED
LENS HSA HSA D250 UNIT
SCREEN SIZE
(ASPECT RATIO)
43”(4:3) 47” （ 16:9 ） 50”(4:3) 57"(16:9) 52” （ 16:9 ） INCH
PITCHES from CENTER
4.0 3.0 3.0 3.0 2.0
CROSS-HATCH
PITCHES
SIDE
* * * * *
I
*
(2mmMAX)
*
(2mmMAX)
*
(2mmMAX)
*
(2mmMAX)
*
(2mmMAX)
COLOR
ABERRATION
O
**
(2mmMAX)
**
(2mmMAX)
**
(2mmMAX)
*
(2mmMAX)
*
(2mmMAX)
REFER TO
NOTE BELOW
(NOTE) * Slightly reddish or no color
** Slightly bluish or no color
(NOTE 2)
Setting to the center between red and crimson is optimum.
I O
L