PG-C30XE. Version 1.4 - Sharp Projector Handy Guide. Page 36

36

No.

Adjustment Items

Adjustment Conditions

Adjustment Procedures

11

RGB countervoltage
adjustment

1. Feed the black-and-red (25%)
stripe signal (XGA).
2. Make the following choice:
Group : OUTPUT 3
Subject : RC (R)
and
Group : OUTPUT 3
Subject : RC-INV (R)

• 

Using the control switches or the
remote controller buttons, adjust the
data in order to minimise the flicker.

• 

Make the same adjustment for BC (B),
GC (G), RC-INV (B) and RC-INV (G).

• 

See if the image is equally adjusted at
the centre and both sides of the screen.
If not, readjust the setting to have the
image equal at right and left.

12

RGB gradation
regeneration adjustment

1. Feed the green-only SMPTE
pattern signal (XGA).
Group : OUTPUT 1
Subject : G1-BLK

Adjust the G-BLK data until the gradation of
the portion 1 (95% and 100% white) shown
below can be slightly recognised. Make sure
also that the gradation of the portion 2 (0%
and 5% black) is visible.

13

RGB white balance

1. Feed the 32-step grey scale signal
(XGA).
Group : OUTPUT 1
Subject : R1-BLK (R)
B1-BLK (B)

Choose the subjects R1-BLK and B1-BLK
and adjust the black balance of the
gradation.

14

Horizontal centre

1. Feed the NTSC monoscope pattern
signal.
2. Group : VIDEO 2
Subject : N358-DLY (4)
N443-DLY (0)
PAL-DLY (3)
SECAM-DLY (0)
Make sure the settings are as above.
3. Group : VIDEO 1
Subject : NTSC-H

Using the control switches or the remote
controller buttons, adjust the data to have
the same overscan.

15

Video picture adjustment

1. Feed the split colour bar signal.
Group : VIDEO 1
Subject : PICTURE
2. Connect the oscilloscope between
pin (2) of P801 and GND.

Using the control switches or the remote
controller buttons, adjust the black-to-white
(100%) level difference to 2.0 ±0.02 Vp-p.

16

Video brightness
adjustment

1. Feed the baseband (split colour
bar) signal. (The ONAIR signal is not
accepted because of its too much
noise.)
Group : VIDEO 2

Using the control switches or the remote
controller buttons, adjust the setting until the
black signal becomes bit-less.