Sony VPH-G90E, Service Manual

Page: 71 / 546

1-61
VPH-G90E/G90U/G90M
60
Before Adjustment
Before adjustment
Using the MENU
CLAMP
Corrects the luminance of the input picture.
I N P U T - A
C O L O R T E M P : 6 5 0 0
C L A M P : A U T O
V S H I F T : W I D E
S Y N C S E L : A U T O
S Y N C R O U T E : A U T O
V I D E O L O C K : N O R M A L
SEL: SET: ENTER EXIT: MENU
PIC
CTRL
PIC
SETTING1
PIC
SETTING2
INPUT
SETTING
SET
SETTING1
P
CLAMP is used as a standard for setting the black
level of a picture correctly. The standard position of
the clamp depends on the kind of sync signal being
used. Normally, the projector CPU judges the signal
and sets the position automatically. However, the CPU
can misjudge the signal because of noise. If the
luminance of the picture seems to be incorrect, the
clamp position may need to be changed.
AUTO: Automatic setting mode. Normally set to this
position.
SonG: Set to this position if the black seems too light
or greenish.
H/C: Set to this position if the picture is too dark or
luminance is unstable.
HP: If the luminance is still incorrect after changing to
the SonG or H/C position, set to this position and
perform the H-SHIFT adjustment.
TRI-LEVEL S: Set to this position if the picture is
dark when using the tri-level sync.
Notes
• If the external signal does not have the SonG signal,
the H/C position is recommended.
• If the luminance is still incorrect after changing the
clamp setting, check the input signal and the
connections.
V (Vertical) SHIFT
Sets the adjustable range of the vertical shift of the
input signal.
I N P U T - A
C O L O R T E M P : 6 5 0 0
C L A M P : A U T O
V S H I F T : W I D E
S Y N C S E L : A U T O
S Y N C R O U T E : A U T O
V I D E O L O C K : N O R M A L
SEL: SET:
ENTER EXIT: MENU
PIC
CTRL
PIC
SETTING1
PIC
SETTING2
INPUT
SETTING
SET
SETTING1
P
WIDE: Normally, set to this position (factory preset).
NARROW: When some signal such as a
superimposed signal with unstable vertical sync.
signal is input, the picture may be distorted
vertically. In this case, set to this position.
Adjustable range in the lower direction will
become narrow.
Note
When the video, S video, component or SDI4:2:2
signal is input, V SHIFT is fixed to NARROW.
SYNC SEL (select)
Selects the sync signal when using an external sync
signal.
I N P U T - A
C O L O R T E M P : 6 5 0 0
C L A M P : A U T O
V S H I F T : W I D E
S Y N C S E L : A U T O
S Y N C R O U T E : A U T O
V I D E O L O C K : N O R M A L
SEL: SET: ENTER EXIT: MENU
PIC
CTRL
PIC
SETTING1
PIC
SETTING2
INPUT
SETTING
SET
SETTING1
P
When an RGB signal is input
AUTO: Automatic setting mode. Normally set to this
position.
SonG: Set to this position if you project the picture
using the sync on G signal.
C: Set to this position if you project the picture using
the composite sync signal.
HV: Set to this position when using the horizontal/
vertical sync signal.
Before adjustment
61
Before adjustment
When an HDTV signal is input
You can select the items below instead of the above
items.
AUTO: Automatic setting mode. Normally set to this
position.
INT: Set to this position when using the internal sync
signal.
EXT [C]: Set to this position when using the external
composite sync signal.
EXT [HV]: Set to this position when using the
external horizontal/vertical sync signal.
Note
For an RGB signal, this item can be selected only
when SonG and C/HV are included.
SYNC ROUTE
Selects the route of the sync signal when the RGB
signal is input to INPUT A.
I N P U T - A
C O L O R T E M P : 6 5 0 0
C L A M P : A U T O
V S H I F T : W I D E
S Y N C S E L : A U T O
S Y N C R O U T E : A U T O
V I D E O L O C K : N O R M A L
SEL: SET: ENTER EXIT: MENU
PIC
CTRL
PIC
SETTING1
PIC
SETTING2
INPUT
SETTING
SET
SETTING1
P
AUTO: Automatic setting mode. Normally set to this
position.
NORMAL: Set to this position for a normal sync
input, that is, when there is no video signal in the
sync line.
SYNC w VIDEO: Set to this position when the video
signal is on the sync line and the sync of the image
is distorted in the AUTO position.
VIDEO LOCK
Selects the range of the frequency deviation of the
input signal so that the INPUT MEMORY data is
switched automatically if the frequency deviation
exceeds the selected range. This item can be selected
only for RGB input signals.
I N P U T - A
C O L O R T E M P : 6 5 0 0
C L A M P : A U T O
V S H I F T : W I D E
S Y N C S E L : A U T O
S Y N C R O U T E : A U T O
V I D E O L O C K : N O R M A L
SEL: SET:
ENTER EXIT: MENU
PIC
CTRL
PIC
SETTING1
PIC
SETTING2
INPUT
SETTING
SET
SETTING1
P
NORMAL: Normally set to this position.
WIDE: Set to this position if the input signal is
unstable or flickers. This phenomenon may appear
during variable speed playback by the VCR. etc.
Input signals and adjustable/setting items
Y: Adjustable/can be set
N: Not adjustable/cannot be set
* For the VPH-G90E model, the optional IFB-G90E Video
Interface Board is required.
Item
Input signal
COLOR
TEMP
CLAMP
V SHIFT
SYNC SEL
SYNC
ROUTE
VIDEO
LOCK
Video or
S video (Y/C)
*
Y
N
N
N
N
N
Component
SDI 4:2:2
Y
N
N
N
N
N
HDTV
Y
N
Y
Y
N
N
RGB
Y
Y
Y
Y
Y
Y