Hitachi VIV-E553LE - Page 34

Procedure:
1) Refer to display 8-1.
2) Press 4 key.
3) Refer to display 8-2.
4) Press the U and D keys so the level at section (A) of
the waveform is 4.0V + 0.05Vp-p (the same level as
in the RGB gain adjustment). (See Fig. 2-103)
5) After setting is completed, press the [RETURN
(ENTER)] key.
(5) Sub Bright R Adjustment (Fig. 2-103)
Purpose:
To set the white balance of the LCD screen together with
the sub bright B adjustment:
Incompleted Phenomenon:
White ts seen as bluish or reddish.
Equipment/Jig:
Osciiloscope
Test Point:
PG5301-5
PG5301-8 (GND)
Procedure:
1) Refer to display 8-1.
2) Press 5 key.
3) Refer to display 8-2.
4) Press the U and D keys so the level at section (A) of
the waveform Is 4.0V + 0.05Vp-p (the same level as
5) After setting is completed, press the [RETURN
(ENTER)] key.
(6) Contrast Adjustment (Fig. 2-104)
Purpose:
To adjust the maximum amplitude of RGB output:
Incompleted Phenomenon:
Contrast is abnormal.
Equipment/Jig:
Osilloscope
Test Point:
PG5301-3
PG5301-8 (GND)
Procedure:
1) Refer to display 8-1.
2) Press 6 key.
3) Refer to display 8-2.
4) Press the U and D keys so the level ats section (B)
of the waveform is 2.1V + 0.02Vp-p. (See Fig. 2-
104)
5) After setting is completed, press the [RETURN
(ENTER)] key.
(7) Commom Amp Gain Adjustment (Fig. 2-105)
Purpose:
To adjust the brightness of the LCD screen:
Incompleted Phenomenon:
Picture is too bright or too dark.
in the RGB gain adjustment). (See Fig. 2-103) Equipmenit/Jig:
Oscilloscope
Display & Figs
Display 8-1 Display 8-2
FeO IE IETS II ISOS ISOS IIR ) ie ee ye
XXXXXXX
LCD ADJUSTMENT HARKER KKK KIKI KEKE KK KEKE KEIR EIER EEE KER ERE
HERREREREE REE RIK HIER EKER KERRIER ER KEE KE RERREREERE [U] UP
[1] PLL VCO [D] DOWN
[2] H. POSITION [RETURN] SAVE & RETURN TO MENU (8)
[3] RGB GAIN [ESC] RETURN TO MENU
[4] sub B Please select [Uj], [D],
[5] sub R [RETURN] or [ESC] __}
[6] CONTRAST
[7] COM 1H ea 1H »
[8] BURST CLEAR
[9]
FLICKER
Fig.
2-104
[ESC] RETURN TO MENU g:
Please select [1] - [9] or [ESC]
E3-14