Sony BRAVIA VPL-VW70, Service Manual

Page: 31 / 160

2-1
VPL-VW70
Section 2
Electrical Adjustments
2-1. Preparations
2-1-1. Required Equipment
. Oscilloscope
Tektronix 2465 or equivalent
(bandwidth: 350 MHz or more)
. NTSC, PAL, SECAM component signal generator
Tektronix AVG1 (optional module) +AWVG1
(optional module) or equivalent
.
VG (Programmable video signal generator)
VG849C or equivalent
. Digital voltmeter
Advantest TR6845 or equivalent
.
Luminance meter
. Chrominance difference gauge
n
Perform the following adjustments at least 15 minutes after
turning on the power.
2-1-2. Service Mode Setting
1. Set the “Status” to “On” in the “Setup” MENU.
2. Close the menu by pressing “Menu” if its displayed.
3. Press the buttons in the following order in 5 seconds:
“
”
→
“ ”
→
“ ”
→
“ ”
4. The message “Do you wish to enter into the
SERVICE MODE? Yes No” will be displayed.
5. Select “Yes”.
m
.
When leaving the SERVICE MODE, perform item 3.
“Do you wish to return to the USER MODE? Yes No”
will be displayed. Select “Yes”.
. Before entering or exiting the SERVICE MODE, be sure
to select any input terminals other than HDMI1 and
HDMI2. Alternately, select the menus in the following
order: MENU/Function/Control for HDMI Setting/
Control for HDMI, and change the setup from ON to
OFF.
. Note that when the items (W/B, Device Adjust) that can
be adjusted in the Service mode are adjusted and stored
in memory, they are saved in NVM and the factory
default data will be lost.
Be sure to perform “Save to memory” after entering and
exiting the Gamma adjustment mode. If the values are
changed in the Gamma adjustment mode and you want
to reset to the original value, turn off the power of the
unit and turn it on again. The UF data does not change
even if the mode for Advanced Iris in Cinema Black Pro
in Picture Adjust is changed without performing “Save
to memory”. When “Save to memory” is performed at
that time, the UF data of each Iris mode will be overwrit-
ten and lost.