Electrical Adjustments; Preparations; Required Equipment; Service Mode Setting - Sony VPL-VW50 Service Manual

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 TG2000 +AVG1 (optional module) +AWVG1
(optional module) or equivalent
. VG (Programmable video signal generator)
VG854 or equivalent
. Digital voltmeter
Advantest TR6845 or equivalent
. Luminance meter
. Chrominance difference gauge
n
Perform the following adjustments at least 5 minutes after
turning on the power.
VPL-VW50
Section 2

Electrical Adjustments

2-1-2. Service Mode Setting

1. Set the "Screen" of "Preferences" to "On" in the
MENU.
2. MENU is erased.
3. Press the keys in the following order:
"ENTER"→"ENTER"→"LEFT" →"ENTER"
4. The message "Do you wish to enter into the
SERVICE MODE? Yes No" will be displayed.
5. Select "Yes".
n
When leaving the FACTORY MODE, perform item 3.
"Do you wish to return to the USER MODE? Yes No"
will be displayed. Select "Yes".
. Note that when the items (W/B, Device Adjust) that can
be adjusted in the Factory 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 adjust-
ment mode. If the values are changed in the Gamma
adjustment mode and the original values cannot be
restored, turn off the power to 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 overwritten and lost.
2-1