Sony VPH-G90U Service Manual page 79

Test Patterns
!¶ HATCH (5 × 5) !• CROSS (9 × 9)
(for adjusting KEY and PIN only) (for adjusting ZONE only)
@¡ 10 IRE @™100 IRE
(for adjusting BIAS only) (for adjusting GAIN and BIAS only)
Test Patterns in Each Mode
The patterns cycle through the following order by pressing the PATTERN
key.
Adjustment mode
CENT
SIZE
LIN
SKEW
BOW
KEY
PIN
ZONE
MG FOCUS
AQP/DQP
GAIN
BIAS
GAMMA
BLKG
RGB SIZE
RGB SHIFT
Service mode
User mode
76
Before adjustment
!ª PLUGE (for adjusting @º STAIR STEP (for adjusting
BIAS only) GAIN only)
The patterns 1 to !£ appear in numerical order
when pressing the PATTERN key in service mode.
The patterns !¢ to @™ appear in specified
adjustment modes only.
The outmost bold line of each pattern in the
illustration stands for the edge of the screen.
Test pattern
CROSS HAIR n HATCH (9 × 9) n HATCH (17 × 17)
n HATCH INV (17 × 17) n External signal / HATCH
(17 × 17) n External signal n CROSS HAIR ...
CROSS HAIR n Sub-pattern n HATCH (17 × 17) n
HATCH INV (17 × 17) n External signal / HATCH
(17 × 17) n External signal n CROSS HAIR ...
HATCH (5 × 5) n HATCH (9 × 9) n HATCH (17 × 17)
n HATCH INV (17 × 17) n External signal/ HATCH(17
× 17) n External signal n HATCH (9 × 9) ...
HATCH (9 × 9) n CROSS HAIR (9 × 9) n HATCH (17
× 17) n HATCH INV (17 × 17) n External signal /
HATCH (9 × 9) n External signal n HATCH (9 × 9) ...
DOT (9 × 9) n DOT (17 × 17) & HATCH (5 × 5) n ME
n ME INV n ALL WHITE n External signal n
DOT (9 × 9) ...
WINDOW n 100 IRE n STAIR STEP n External
signal n WINDOW ...
PLUGE n 10 IRE n STAIR STEP n External signal
n PLUGE...
STAIR STEP n STAIR STEP n STAIR STEP n
External signal n STAIR STEP...
External signal / HATCH (17 × 17) ˜ External signal
External signal ˜ External signal / HATCH (17 × 17)
Test patterns 1 to !£ shown on page 75.
CROSS HAIR n HATCH (9 × 9) n ME n
COLOR BAR n CROSS HAIR ...
Warm-up before adjustment
Before adjusting the registration, make sure to turn on the projector and
allow it to warm up for 20 minutes.
The projector is designed with a warm-up period of about 20 minutes after
turning on the power. During this period, it displays a white screen with
the message shown below. 35 seconds after the warm–up starts, the
message will disappear temporarily and will appear subsequently for 5
seconds every 30 seconds.
F o r o p t i m u m
p e r f o r m a n c e ,
w h i t e s c r e e n w i l l
r e m a i n f o r
2 0 m i n
F o r i m m e d i a t e u s e
p u s h [ M E N U ] k e y .
Press the MENU key to cancel the warm–up, if you wish to see the picture
immediately.
You may also set the projector for a shorter, longer or no warm–up period.
For details, see "ALL WHITE MODE" in the SERVICE SETTING 2 menu on
page 70.
77
Before adjustment