Sony BRAVIA VPL-VW70, Service Manual

Page: 37 / 160

2-7
VPL-VW70
Custom
Set Gain and Bias for CUSTOM 1 to 4 to the following
values.
CUSTOM 1: Copy the Gain and Bias values for High.
CUSTOM 2: Copy the Gain and Bias values for Middle.
CUSTOM 3: Copy the Gain and Bias values for Low.
CUSTOM 4: Set the Gain and Bias values for R/G/B to
128.
Save the set values.
Iris: Auto1/Manual Adjustment
Switch the Iris mode to “Auto1. Manual”. Copy all of the
white balance adjustment values (High, Middle, Low, and
all of the Gain Bias values of CUSTOM1 through CUS-
TOM4) at Iris OFF, to the corresponding Iris mode values
respectively.
Save the set value.
2-4. IRIS Adjustment
(1) Bring the ZOOM position of the lens to the center.
(2) Input the XGA 60Hz all white 100IRE signal in
INPUT-A.
(3) Set “Other: 01 Iris/Adj” of Device Menu to 1.
(4) Set the value of “Other: 02 Iris/Open Reg” to 1023,
and check the value of “Other: 04 Iris/Open Hall”.
(5) While decreasing the value of “Other: 02 Iris/Open
Reg”, check the value of “Other: 04 Iris/Open Hall”.
(6) When the value of “Other: 04 Iris/Open Hall” reaches
the value of [step (4) value
_
25], check the value of
“Other: 02 Iris/Open Reg”.
(7) Save the value of “Other: 02 Iris/Open Reg” of step (6)
in a memory.
(8) Measure the luminance level at this time. [OFF
Luminance]
(9) Set the value of “Other: 03 Iris/Close Reg”equal to
that of “Other: 02 Iris/Open Reg” of step (6).
(10)While decreasing the value of “Other: 03 Iris/Close
Reg”, check the luminance level. Check the value of
“Other: 03 Iris/Close Reg” when the luminance level
reaches 32% of [OFF Luminance].
(11)Save the values of “Other: 03 Iris/Close Reg” of step
(10) in a memory.
(12)Return the value of “Other: 01 Iris/Adj” to 0, and
perform Save to Memory.
2-5. Panel Driver Gain B Adjustment
(1) Input the XGA 60Hz Blue Only 100 IRE signal in the
INPUT-A terminal.
(2) Set the Panel Driver: 03 P. Drv/Gain B value to “85”.
(3) While measuring luminance at the center of the screen,
decrease the 03 P. Drv/Gain B value. Take note of the
03 P. Drv/Gain B value when luminance reaches
maximum.
(4) Save the 03 P. Drv/Gain B value of step (3) in a
memory.
(5) Perform Save to Memory.