Sony VPH-D50Q User manual

Installation Manual for Dealers
Before operating the unit, please read this manual
thoroughly and retain it for future reference.
Manuel d’installation destiné aux
revendeurs
Avant de mettre cet appareil en exploitation, veuillez lire
attentivement ce manuel et le ranger en lieu sûr aux fins
de consultation ultérieure.
Manual de instalación para
proveedores
Antes de utilizar la unidad, lea este manual en su
totalidad y consérvelo para realizar consultas.
Multiscan
Projector
VPH-D50Q
VPH-D50QM
VPH-D50Q/VPH-D50QM
©1996 by Sony Corporation
3-858-837-14 (1)
CAUTION
THIS INSTALLATION MANUAL IS FOR USE BY QUALIFIED PERSONNEL
ONLY.
IMPORTANT
CE MANUEL D’INSTALLATION EST DESTINÉ AUX PROFESSIONNELS
SEULEMENT.
IMPORTANTE
ESTE MANUAL DE INSTALACIÓN ES PARA SER USADO POR PERSONAL
CUALIFICADO SOLAMENTE.

2 (EN)
Installation
English
Table of Contents
Installation Procedures .................................................................... 4(EN)
Installation Diagrams....................................................................... 5(EN)
Necessary Clearance for Installation and Maintenance ........... 5(EN)
Using the Handles to Carry the Projector ................................ 8(EN)
Floor Installation Using Front Projection Flat Screen ............. 9(EN)
Ceiling Installation Using Front Projection Flat Screen ........ 11(EN)
Floor Installation Using Rear Projection Flat Screen ............ 13(EN)
Notes on Screen...................................................................... 15(EN)
Modifying Parts .............................................................................. 17(EN)
Removing the Upper Cover ................................................... 17(EN)
Changing the Polarity............................................................. 17(EN)
Adjusting the CRT Conversion Angle.................................... 20(EN)
Location and Function of Connectors .......................................... 22(EN)
Switching the 75-ohm Terminate Connectors .............................. 24(EN)
Connecting Directly to the Projector ............................................ 26(EN)
Using the Signal Interface Switcher.............................................. 27(EN)
Connecting Multiple Projectors .................................................... 31(EN)
Using the Linked ABL Function ............................................ 34(EN)
Adjustment Procedures.................................................................. 36(EN)
For Remote Control........................................................................ 37(EN)
Preparation ............................................................................. 37(EN)
Keys on the Remote Control .................................................. 40(EN)
Using the Menu ............................................................................... 43(EN)
Basic Menu Operation............................................................ 43(EN)
The INPUT SELECT Menu................................................... 44(EN)
The PIC CTRL (Picture Control) Menu................................. 45(EN)
The INPUT SETTING Menu................................................ 47(EN)
The SET SETTING Menu ..................................................... 50(EN)
The INPUT INFO (Information) Menu ................................. 52(EN)
The SERVICE SETTING Menu ............................................ 54(EN)
The SET INFO (Information) Menu ...................................... 55(EN)
The ABL (Automatic Brightness Limiter) LINK Menu ........ 56(EN)
The OPTION Menu................................................................ 57(EN)
Test Patterns .................................................................................... 58(EN)
Test Patterns ........................................................................... 58(EN)
Test Patterns in Each Mode .................................................... 60(EN)
Connections
BeforeAdjustment

3 (EN)
Adjusting the Focus ........................................................................ 61(EN)
Focus Adjustment Procedure.................................................. 61(EN)
Adjusting the Green Focus ..................................................... 62(EN)
Adjusting the Red and Blue Focus ......................................... 66(EN)
Adjusting the Registration............................................................. 68(EN)
Procedure................................................................................ 68(EN)
Preparation ............................................................................. 69(EN)
Keys forAdjusting.................................................................. 70(EN)
Adjusting the Green Registration ........................................... 71(EN)
Adjusting the Red Registration .............................................. 80(EN)
Adjusting the Blue Registration ............................................. 89(EN)
Saving the Standard Registration Data................................... 90(EN)
Fine Adjustment for Each Input Signal........................................ 91(EN)
Adjusting the Video Input Signal ........................................... 91(EN)
Adjusting the RGB Input Signal ............................................ 93(EN)
Adjusting the White Balance.................................................. 96(EN)
Saving the Adjustment Data .......................................................... 98(EN)
Resetting the Data......................................................................... 100(EN)
Resetting the Data ................................................................ 101(EN)
Protecting the Setting ................................................................... 102(EN)
Adjusting the Picture Quality...................................................... 103(EN)
Changing the Initialization Period.............................................. 104(EN)
About Error Codes ....................................................................... 105(EN)
List of the Projection Distance byAngle of OpticalAxis .......... 106(EN)
Index .............................................................................................. 111(EN)
Adjustment
Others

Installation
4 (EN) Installation
By default, this projector is adjusted for 120-inch front projection on the
floor/desk. If you install the projector in other conditions, you have to
change some settings. Therefore, installation procedures depend on the
screen size or type, and installation method.
1Verifythe conditions ofinstalla tion, suchas angle ofopticalaxis,
projectiondistance, heightof theprojector andscreen.
.
2Chang e thepolar ity accor ding tothepr ojectionpa tter ns. (page17 (EN))
.
3Installthepr ojectorand scr een. (page9 (EN))
.
4Resetther egistrationda ta tofactor ysetting.(page101(EN))
.
5AdjusttheCR Tconversionangle.(page 20(EN))
.
6Adjust the lens f ocus and f lapping of the lens. (page 62 (EN))
.
7Adjustther egistrations. (page68 (EN))
.
8Connectotherequipment. (page26(EN))
.
9Adjust eac h input signal. (pages 91 (EN) to 97 (EN))
• Fine adjustment for the registrations. (pages 91 (EN) and 94 (EN))
• Adjust the size or shift of the picture. (pages 92 (EN), 94 (EN) and
95 (EN))
• Adjust the blanking. (pages 93 (EN) and 95 (EN))
Installation Procedures

Installation
Installation 5 (EN)
Necessary Clearance for Installation and Maintenance
Make sure to provide enough room for maintenance service. Install the
projector, making reference to the dimensions below.
There should be a space of at least 30 cm (1 3/16 inches) around the
ventilation holes. Never block the holes with any material.
Front
Installation Diagrams
Installation Diagrams
Unit: mm (inches)
Rear
Installation
Unit: mm (inches)
164.7 (6 15/32)
345 (13 19/32)
214 (8 7/16)
603 (23 3/4)
125 (4 29/32)
Remote control detector
AC IN socket
MAIN POWER switch
302 (11 7/8) (Ventilation holes)
133 (5 1/4)
27
(1 1/16)35.5
(1 13/32)
59.4
(2
11
/
32
)
125.8 (4 15/16)
424 (16 11/16) (Ventilation holes)
350 (13 25/32)
110 (4
11
/ 32 ) 128 (5
1
/ 32 )
Error code window/
Remote control detector

Installation
6 (EN) Installation
Bottom The standard hole for installation on the bottom surface is useful for
reference when measuring for installation. There are seven holes on the
bottom surface of the projector. For ceiling installation using the optional
PSS-70 Projector Suspension Support, use five holes to attach the PSS-70.
The other two holes are spare ones.
Notes
• Use only the M8 meter screws of 10 mm (13/32 inches) to 30 mm (13/16 inches)
long for the attachment holes for the PSS-70.
• When attaching the PSS-70, use the M8 meter screws of 20 mm (25/32 inches)
supplied with the PSS-70.
Installation Diagrams
Unit: mm (inches)
524 (20 5/8)
322 (12 11/16)
679 (26 23/32)
22.8 (29/32)
137.8 (5 7/16)
83 (3 9/32)
64.8 (2 9/16)
451 (17 3/4)
435 (17 1/8)
457.8 (18 1/32)
83 (3 9/32)
230 (9
1
/ 16 )
174 (6 27/32)
318 (12 17/32)
515 (20 9/32)
330.7 (13 1/32)194.6
(7 21/32)
211.8 (8 11/32)
25 (
31
/
32
)
14 (9/16)
Holes for attaching
the PSS-70/spare
holes (M8 meter
screws, 20 mm
(25/32 inches))
Holes for attaching the
PSS-70/Spare holes
Receptacles for
the projections
of the PSS-70
Standard hole
for installation
Handle
Adjuster
Ø 60
Holes for attaching
the PSS-70
Spare holes
50 (1 31/32)
50 (1 31/32)

Installation
Installation 7 (EN)
Side
671 (26 13/32)
319 (12 5/8)
∅137
(5
13
/
32
)
12.5°
345 (13 19/32)
254 (10)
20
(25/32)
∅60 (2 3/8)
301.7 (11 7/8)
311.2 (12 1/4)
169.6 (6 11/16)
235.7 (9 9/32)
95°
R298 (11
23
/
32
)
38
(11/2)
Deflection
board
Signal board
Center of the
green lens
Center of the gravity
of the projector
Handle release lever Location of the
standard hole
for installation
Power supply/
High voltage
circuit block
Unit: mm (inches)
329 (13)
Adjuster
154
(6
1
/
16
)

Installation
8 (EN) Installation
Installation Diagrams
Using the Handles to Carry the Projector
You can carry the projector by using the side (right and left) handles.
Using the handles Pull out the side handles.
Putting away the handles Pull the handle release lever under each handle towards you. The handle is
automatically retracted.

Installation
Installation 9 (EN)
Floor Installation Using Front Projection Flat Screen
Be sure that the projector is level to the floor.
B: Difference in height between the projector’s bottom surface and the center of the screen
E: Horizontal distance between the center of the screen and the center of the green lens
F: Horizontal distance between the center of the screen and the standard hole for installation
Tolerances
B: ±5%
Other measurements: 0% to +5%
The distances in gray are the factory preset settings. Unit:mm (inches)
60 70 80 90 100 120 150 180 200 250
A (Vsize) 914 1067 1219 1372 1524 1829 2286 2743 3048 3810
(36) (42) (48) (54) (60) (72) (90) (108) (120) (150)
B (Hcent) 710 777 845 912 980 1114 1320 1526 1662 2005
(28) (30 5/8) (33 3/8) (36) (38 5/8) (43 7/8) (52) (60 1/8) (65 1/2) (79)
C (Width)
D (TD) 1956 2240 2529 2816 3102 3673 4551 5425 6012 7466
(77) (88 1/4) (99 5/8) (110 7/8) (122 1/4) (144 5/8) (179 1/4) (213 5/8) (236 3/4) (294)
E (Xlens) 1902 2179 2459 2738 3016 3571 4424 5274 5844 7257
(74 7/8) (85 7/8) (96 7/8) (107 7/8) (118 7/8) (140 5/8) (174 1/4) (207 5/8) (230 1/8) (285 3/4)
F (Lhole) 2033 2310 2591 2869 3148 3703 4556 5405 5976 7389
(80 1/8) (91) (102) (113) (124) (145 7/8) (179 3/8) (212 7/8) (235 3/8) (291)
G (Lmax) 2535 2812 3092 3371 3649 4204 5057 5907 6477 7890
(99 7/8) (110 3/4) (121 3/4) (132 3/4) (143 3/4) (165 5/8) (199 1/8) (232 5/8) (255 1/8) (310 3/4)
H (Lfront) 1864 2141 2421 2700 2978 3533 4386 5236 5806 7219
(73 1/2) (84 3/8) (95 3/8) (106 3/8) (117 3/8) (139 1/8) (172 3/4) (206 1/4) (228 5/8) (284 1/4)
a) Sony VPS-80FH and VPS-100FH
b) Sony VPS-100FM
c) Sony VPS-120FH and VPS-120FM
Screen size
(inches)
28
a)
32
b)
32
c)
(1
1
/ 8 ) (1
5
/ 16 ) (1
5
/ 16 )
Wall
A
D
Floor
CF
H
B
Center of the
green lens
Center of the screen
13.5˚
254 (10 )
Standard hole
for installation
EG

Installation
10 (EN) Installation
When the Screen Size is not Mentioned in theTables
You can calculate the installation measurements described below when you
use the screen whose size is not mentioned in the tables on pages 9 (EN)
and 11 (EN).
Check your installation conditions:
• Screen size to be used (S)
• Installation measurements at the end of the manual, EL and BL for larger
screen size and ES and BS for smaller screen size
See the tables on pages 106 (EN) to 110 (EN).
Now you can calculate the installation measurements as follows:
E (mm) = ES + ((S – smaller screen size) ×(EL – ES) ×0.1)
B (mm) = BS + ((S – smaller screen size) ×(BL – BS) ×0.1) + 254
Example: when using 124-inch screen
According to the tables on pages 107 (EN) and 108 (EN), the values E and
B are as follows:
ES = 3571, BS = 860 (As the smaller screen size is 120 inch.)
EL = 3856, BL = 929 (As the smaller screen size is 130 inch.)
Therefore,
E (mm) = 3571 + ((124 –120) ×(3856 – 3571) ×0.1) = 3685 (mm)
B (mm) = 860 + ((124 – 120) ×(929 – 860) ×0.1) + 254 = 1142 (mm)
Installation Diagrams
E
BCenter of the screen
E: Projection distance
B: Screen heights
Center of the green lens

Installation
Installation 11 (EN)
Ceiling Installation Using Front Projection Flat Screen
Use the PSS-70 Projector Suspension Support (not supplied).
E: Horizontal distance between the center of the screen and the center of the green lens
Tolerances
B: ±5%
Other measurements: 0% to +5%
Unit:mm (inches)
60 70 80 90 100 120 150 180 200 250
A (Vsize) 914 1067 1219 1372 1524 1829 2286 2743 3048 3810
(36) (42) (48) (54) (60) (72) (90) (108) (120) (150)
B (Hcent) 825 892 960 1027 1094 1229 1435 1640 1777 2120
(32 1/2) (35 1/8) (37 7/8) (40 1/2) (43 1/8) (48 3/8) (56 1/2) (64 5/8) (70) (83 1/2)
D (TD) 1956 2240 2529 2816 3102 3673 4551 5425 6012 7466
(77) (88 1/4) (99 5/8) (110 7/8) (122 1/4) (144 5/8) (179 1/4) (213 5/8) (236 3/4) (294)
E (Xlens) 1902 2179 2459 2738 3016 3571 4424 5274 5844 7257
(74 7/8) (85 7/8) (96 7/8) (107 7/8) (118 7/8) (140 5/8) (174 1/4) (207 5/8) (230 1/8) (285 3/4)
F’(Lpss) 2166 2442 2723 3001 3280 3835 4688 5537 6108 7521
(85 3/8) (96 1/4) (107 1/4) (118 1/4) (129 1/4) (151) (184 5/8) (218 1/8) (240 1/2) (296 1/8)
G (Lmax) 2535 2812 3092 3371 3649 4204 5057 5907 6477 7890
(99 7/8) (110 3/4) (121 3/4) (132 3/4) (143 3/4) (165 5/8) (199 1/8) (232 5/8) (255 1/8) (310 3/4)
H (Lfront) 1864 2141 2421 2700 2978 3533 4386 5236 5806 7219
(73 1/2) (84 3/8) (95 3/8) (106 3/8) (117 3/8) (139 1/8) (172 3/4) (206 1/4) (228 5/8) (284 1/4)
Necessary parts modifications
Changing the polarity used for “Ceiling installation, front projection”
For details, see “Changing the Polarity” on page 17 (EN).
D
G
B
A
F’
Center of
the screen
Center of the green lens
Wall
Rotation axis of
the PSS-70
Ceiling
E
H
13.5˚ 369(14 5/8)254(10)
Screen size
(inches)

Installation
12 (EN) Installation
Attaching the PSS-70 Projector Suspension Support
Attach the projector mounting bracket to the bottom surface of the
projector.
Use five each of the M8×20 bolts, M8 washers and spring washers, all of
which are supplied with the PSS-70.
1Align the two projections on the projector mounting bracket with the
receptacles on the bottom surface of the projector.
2Fasten the five bolts and washers to fix the mounting bracket to the five
holes for attaching the PSS-70 on the bottom surface of the projector.
For attaching the PSS-70 to the ceiling, refer to the Installation Manual of the
PSS-70 Projector Suspension Support.
M8×20 bolt
Spring washer
M8 washer
Projector
mounting
bracket
Installation Diagrams
Installation dimensions
263.8 (10 3/8)
114.8 (14 17/32)
254 (10) 254
(10)
301.8 (11 7/8)
322.5
(12 11/16)
457.4 (18)

Installation
Installation 13 (EN)
Floor Installation Using Rear Projection Flat Screen
What is the optical axis angle?
The optical axis angle is the angle between the horizontal level line and the
straight line from the center of the projector’s green lens to the center of
the screen. When using a rear projection screen, you can get the brightest
picture when the center of the screen is aligned with a straight line
extension of the center of the green lens.
Therefore, the most suitable optical axis angle varies depending on the
height of the screen and your line of sight.
When the optical axis angle is 2°
Unit: mm (inches)
60 70 80 90 100 120 150 180 200 250
A (Vsize) 914 1067 1219 1372 1524 1829 2286 2743 3048 3810
(36) (42) (48) (54) (60) (72) (90) (108) (120) (150)
B (Hcent) 140 130 120 110 100 80 49 18 -3 -54
(5 5/8) (5 1/4) (4 3/4) (4 3/8) (4) (3 1/4) (1 15/16)(
23/32)(- 1/8) (-2 1/8)
E (Xlens) 1977 2265 2556 2846 3136 3712 4599 5482 6075 7544
(77 7/8) (89 1/4) (100 3/4) (112 1/8) (123 1/2) (146 1/4) (181 1/8) (215 7/8) (239 1/4) (297 1/8)
F (Lhole) 2172 2460 2751 3041 3331 3907 4794 5677 6270 7739
(85 5/8) (96 7/8) (108 3/8) (119 3/4) (131 1/8) (153 7/8) (188 3/4) (223 5/8) (246 7/8) (304 3/4)
G (Lmax) 2655 2943 3234 3524 3814 4390 5277 6160 6753 8222
(104 5/8) (115 7/8) (127 3/8) (138 3/4) (150 1/4) (172 7/8) (207 7/8) (242 5/8) (265 7/8) (323 3/4)
Necessary parts modifications
Changing the polarity used for “Floor installation, rear projection”
For details, see “Changing the Polarity” on page 17 (EN).
B0
+
–
Center of the screen
Optical axis
angle
15.5°
Standard hole for
installation
Floor
E
F
2°A
Wall
G
Screen size
(inches)

Installation
14 (EN) Installation
Variable Range of the Optical Axis Angle in Rear Projection
You can change the optical axis angle within the following ranges by
adjusting flapping of the lens.
For adjusting flapping of the lens, see “Adjusting flapping of the green lens” on
page 64 (EN).
On floor installation
You can install the projector within an angle of optical axis –13.5°to +2°.
On ceiling installation
You can install the projector within an angle of optical axis +3°to +13.5°.
n: Optical axis
– · – · : Horizontal line
n: Optical axis
– · – · : Horizontal line
+2°
–13.5°
+3°
+13.5°
Installation Diagrams
Wall
Wall
Floor
Ceiling

Installation
Installation 15 (EN)
Notes on Screen
Screen size
The screen size is the diagonal length of the screen in
inches, while the aspect ratio of the screen is 3:4. The
ratio of the screen height, width, and diagonal is 3:4:5.
If you use a screen with 3:4 aspect ratio whose size is
not given in the table below, you can calculate the
screen height and width from the screen size (inches)
as follows.
Calculate at the conversion rate of 25.4 mm to the
inch.
Height (mm) = Screen size ×25.4 ×3/5
Width (mm) = Screen size ×25.4 ×4/5
Screen size and dimensions
Screen size (inches)
(Diagonal) Height (mm) Width (mm)
60 914 1219
70 1067 1422
80 1219 1626
90 1372 1829
100 1524 2032
120 1829 2438
150 2286 3048
180 2743 3658
200 3048 4064
250 3810 5080
4
35
Screens with an aspect ratio other than
3:4
When the height is greater
Calculate the screen size with 3:4 aspect ratio from the
screen height as shown below. Install the projector and
screen in accordance with the screen size obtained.
--- : Screen whose aspect ratio is 3:4
Screen size (inch) = (height (mm) ×5/3)× 1/25.4
Example: When the screen height is 1500 mm
(1500 (mm) × 5/3) ×1/25.4 = Approx. 98 inches
When the width is greater
Calculate the screen size with 3:4 aspect ratio from the
screen width as shown below. Install the projector and
screen in accordance with the screen size obtained.
---: Screen whose aspect ratio is 3:4
Screen size (inch) = (width (mm) ×5/4)× 1/25.4
Example: When the screen width is 2000 mm
(2000 (mm) × 5/4) ×1/25.4 = Approx. 98 inches

Installation
16 (EN) Installation
Front projection screen for floor installation
The bead screen is recommended. A screen of this type
reflects the brightest light.
Front projection screen for ceiling installation
The silver screen is recommended. You can get a
picture that is two to four times brighter than that of
the white screens.
Installation Diagrams
Projector
Bead screen Center of the screen
Brightest picture
Projector
Brightest picture
Center of the screen
Silver
screen
Rear projection screen
A screen manufactured using two sheets, the fresnel
and lenticular, is recommended for a bright and clear
full-screen picture projection.
White screen
When viewers watch the projected picture in a wide
area, you can obtain a picture that appears equally
bright from all parts of the room using the white
screen for both floor and ceiling installations. Note
that you will not be able to get a clear picture in this
case unless the room is dark.
Types of screen
Projector
Horizontal viewing areaScreen
Projector

Installation
Installation 17 (EN)
Removing the Upper Cover
1Turn off the main power of the projector.
2Unlock the two screws on the projector by using a screwdriver or a
coin edge, and then open the upper cover.
3Slide the upper cover towards the rear and lift it to remove.
Changing the Polarity
The polarity of the projector is adjusted to use the projector for front
projection on the floor.
When the projector is installed on the ceiling or used in rear projection, it
is necessary to change the settings of the polarity switch and the polarity
connectors.
Modifying Parts
Locked Unlocked
(continued)

Installation
18 (EN) Installation
How to change the polarity 1Turn off the power of the projector.
2Remove the upper cover.
For how to remove the upper cover, see page 17 (EN).
3Press to open the connector cover.
4Check the polarity switch position and the connecting position of the
polarity connectors.
For the installation methods of the projector and the settings of the switch and
the connectors, see the diagram on the next page.
5Change the switch position and/or the connecting position of the
connectors, if necessary.
Polarity switch: Set to the lens side or board side position.
Polarity connectors: Disconnect the three connectors, then turn them
over (180°) and reinsert into the receptacles on the lens side or the
board side.
6Make sure to insert the connectors correctly and to set the switch to the
correct position, then restore the connector cover and the upper cover.
Note
If the connector cover does not shut firmly, the power of the projector is not turned
on.
Lens side
(Factory-preset)
Board side
Connecting position of
the polarity connectors
Connector cover
Lens side
(Factory-
preset)
Polarity switch position
Board
side
Modifying Parts

Installation
Installation 19 (EN)
Installation methods and settings of the polarity switch and the polarity connectors
Installation
methods
Front projection,
floor
Front projection,
ceiling
Rear projection,
floor
Rear projection,
ceiling
Others
Position of the
switch
L
B
L
B
Display letters on the screen so that you can determine
which changes to make.
For on-screen display and necessary changes, see below.
Connecting
position of the
connectors
L
B
B
L
On-screen display
by default (See
below.)
Correct
C
A
B
L: Lens side
B: Board side
Note
When installing the projector, make sure to leave space of more than 30 cm (12
inches) between the wall or floor and the ventilation holes of the projector.
Polarity and on-screen display
When the projector is installed on the ceiling or used in rear projection
without changing the polarity, one of the following on-screen displays
appears. In this case, you have to change the polarity corresponding to the
installation methods.
AThe letters are backward.
Change the connecting position of
the polarity connectors.
BThe letters are upside
down.
Change the polarity switch position.
CThe letters are upside down and backward.
Change the polarity switch position and the connecting position of the
polarity connectors.
INPUT-A

For optimum
performance,
white screen will
remain for 20min.
For immediate use,
push [MENU] key.
INPUT-A

For optimum
performance,
white screen will
remain for 20min.
For immediate use,
push [MENU] key.
INPUT-A

For optimum
performance,
white screen will
remain for 20min.
For immediate use,
push [MENU] key.

Installation
20 (EN) Installation
Adjusting the CRT Conversion Angle
Adjust the CRT conversion angle so that the three CRT images converge
exactly.
1Remove the upper cover.
For how to remove the upper cover, see page 17 (EN).
2Turn on the power of the projector.
3Set the remote control to the service adjustment mode.
For details, see “Preparation” on page 37 (EN).
4Reset the green, red and blue centering.
For details, see “Resetting the Data” on page 100 (EN).
5Make sure that the on-screen display is shown as follows:
• The center of the green HATCH pattern aligns with the horizontal
center of the screen.
• The center of the red and blue HATCH patterns align at even
intervals from the green HATCH pattern.
If the center of the green HATCH pattern does not align with the center
of the screen, re-install the projector correctly.
6Loosen the four red CRT fixing screws (black) by using the Philips
screwdriver. Make sure not to remove the screws.
Modifying Parts
Black
screws Black
screws
Black
screws