Amplitude Adjustment; Sub-Contrast Adjustment - Hitachi 70VS810 Service Manual

III. ASSEMBLED P.W.B. ADJUSTMENT

5.0 Amplitude Adjustment

5.1 RGB Amplitude Adjustment
Preparation for adjustment
(1) Recall user menu and select 'Video' _ 'Picture Mode' _ 'Day' _ 'Reset'.
(2) Input 525p(480p) of RGB amplitude adj. signal into INPUT1 (Component) input.
Adjustment procedure
(1) Receive 525p(480p) signal (ASPECT 16:9 Standard).
(2) Select 'RGB (480P)' from Service Adj. Menu.
(3) Press and hold the " " cursor on the remote for 2 seconds or more to perform automatic
adjustment.
(4) Wait until 'Auto Adjusting' OSD is disappeared.
Sample of 'ADJUST MODE' Menu
ADJUST MODE LC4x No. X
RGB (480p)
SUB CONT.
LCD ADJUST
LCD DRIVE
BURN IN
MEMORY INIT
E2PROM
P MODE ADJUST
ISF MODE
Remarks
-
RGB amplitude adj. signal

6.0 Sub-contrast adjustment

-Preparation
(1) Receive Sub-contrast adjustment signal.(Fig.1)
-Adjustment
(1) Select 'SUB CONTRAST' of Service Adj. Menu.
(2) Press " " for over 2 seconds to perform automatic adjustment. When it's completed, 'Auto
Adjusting' on the screen will be disappeared.
BACK TO ADJUSTMENTS
BXXX
F i g . 1
Full White (RF Input)
V V
1 2
Black White
0.7 V
V =1.0 Vp-p (when V =100IRE)
1 2
40
LC48/B-LC47/B/K