Electrical Adjustments; Preparations; Equipment Required; Optical Unit Adjustment - Sony VPL-HS3 Service Manual

2-1. Preparations

2-1-1. Equipment Required

. 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
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Perform the following adjustments at least 5 minutes after
turning on the power.

2-1-2. Optical Unit Adjustment

Drive the cooling fan and turn on the lamp.
Mirror Adjustment
Set the screen size to 80-inch at the wide-end.
1. Set the unit in green-only.
2. Adjust the blanking sections at the top, bottom, left,
and right for minimum by moving the adjusting plate
of the G dichromatics mirror.
3. Tighten the adjusting plate fixing screws.
4. Set the unit in cyan.
5. Adjust the blanking sections at the top, bottom, left, and
right for minimum by moving the adjusting plate of the
RB mirror, and then maximize the intensity of the blue.
6. Tighten the adjusting plate fixing screws.
7. Set the unit in all white.
8. Adjust the blanking sections at the top, bottom, left, and
right for minimum by moving the adjusting plate of the
RB mirror, and then maximize the intensity of the red.
9. Tighten the adjusting plate fixing screws.
10. Secure the six adjusting plate fixing screws using a
torque screwdriver.
Tightening torque: 8 kgf/cm
11. Make sure that the deviation of the lighting range is
within the specific range.
VPL-HS3
Section 2

Electrical Adjustments

2-1-3. Factory Mode Setting

1. Make sure that the MENU is indicated.
2. Exit the menu.
3. Press the keys in the following order:
"ENTER" → "ENTER" → "LEFT" → "ENTER"
4. The message "Do you wish to enter into the
FACTORY MODE? Yes:↑ No:↓ " will be displayed.
5. Select "Yes:↑".
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. When leaving the FACTORY MODE, perform item 3.
"Do you wish to return to the USER MODE? Yes:↑ No:↓
" will be displayed. Select "Yes:↑".
2-2. V COM Adjustment
1. Input the green-only VGA 1 Lime ON/OFF signal to
INPUT-A, and set the CONTRAST to 70.
2. Set the screen to G VCOM adjustment of "Device
Adjust."
3. Adjust the G VCOM so that the flicker on the screen is
minimum.
4. Change the input signal to the red-only and blue-only
1 line ON/OFF signal respectively and adjust R
VCOM and B VCOM respectively so that the flicker
becomes minimum as described in step 3.
5. Save the value adjusted.
6. Set the "Image Flip" to either "V" or "HV".
7. Input the R/G/B value adjusted as above step 5.
8. Save the value adjusted.
9. Set the "Image Flip" to "OFF".
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