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Service Manual - Page 1
9800 Overhead Projector Service Manual
3M Visual Systems Division 6801 River Place Boulevard Austin, Texas 78726-9000
Printed in U.S.A. C E3M 7/96 78-6970-5568-5 Rev.
Service Manual - Page 2
...2-5. Stage Assembly 5-3 5-2-1. How to Replace the Mirror Assembly 5-2 5-1-2. Parts Identification 1-1 1-1-2. Fold Down Procedure 2-2
2-3. Lamp Position 4-3 4-2-2. How to Replace the Stage Glass 5-4 5-2-5. Projection Head Lens, Magnifier Lens Stage Glass 3-2 3-1-3. Fresnel Lens 3-2
4-1. 3Mt Overhead Projector 9800 Series
Table of Operation 1-3 1-2-1. Permanent...
Service Manual - Page 4
... instructions, operating instructions, assembly and disassembly of machine) 19. Post Latch 9. Internal Lamp Voltage Protector (raise top cover to access)
9800 Service Manual E 3M 1996
1-1 Power Cord
15. Parts Identification
1. Lamp "Burned Out" or "Missing" Indicator 21. Top Cover Release Latch (with lamp interrupt switch)
a. Arm 6. Cord Wrap 13. 3Mt Overhead Projector 9800 Series...
Service Manual - Page 8
...Note Use the "Low" setting to select the alternate lamp. 3Mt Overhead Projector 9800 Series
Section 1 - Rotate the lamp changer dial left or right to extend lamp life.
1-2-4. Note The control panel door must be closed to brown or blue colors from the corners of projected images. "High" is recommended for instructions.
9800 Service Manual E 3M 1996
1-5 Lamp Changer and High/Low Controls...
Service Manual - Page 20
... the
center of the overhead projector when it points towards the wall. Follow a floor or ceiling tile from the
projector to all parts of the front projection lens (Figure 4-2). b. Adjustments
4-1. x 60 in .) area and place a sturdy bench or test stand about eight feet from the floor to Screen Alignment 4. 3MtOverhead Projector 9800 Series
Section 4 - Figure 4-1. An electrical...
Service Manual - Page 21
... following tools are required to properly position the projector each time it is checked.
9800 Service Manual E 3M 1996
4-2 Torx Screwdriver (T-15) 5. Square and... Nut Driver, 6 mm (1/4 in all times, until the image is in . Mark the exact location of the projector base on the floor with a window shade.
6. Carpenter's Square
9800-57I
Figure 4-3. 3MtOverhead Projector 9800 Series
Section...
Service Manual - Page 28
... replacing the Fresnel Lens, install it forward to free Fresnel Lens and carefully remove. Open top cover. 2. Stage Glass
Fresnel Lens
Bowed side toward the stage glass. See Figure 5-3. Figure 5-4. Fresnel Lens Orientation
9800-64I
9800 Service Manual E 3M 1996
5-3
Front Hinge Screw
Hinge Bracket Alignment Hole
Figure 5-3. 3Mt Overhead Projector 9800 Series
5-2. Remove...
Service Manual - Page 44
... plugged into outlet? Section 5-4-2
--
--
6-2
6-2 2-6 1-2-2
-- 5-4-8 2-6 5-2-5 5-2-6
3M 9800 Service Manual
6-1 Is lamp defective? Is projector plugged into outlet with Ohmmeter. c. Is interlock working ? See Short Lamp Life (below is hot causes failure. a. Excess heat may be causing seal to lower setting. c. Replace defective switch. Short lamp life.
Is stage cover...
Service Manual - Page 45
....
b. 9800 Overhead Projector
Section 6 - Replace defective lamp
actuating properly? specified on when lamp changer dial is wider at the top than at 90_ angle to lamps crossed a. Rotate lamp changer dial fully into left or right position?
Fully seat lamp in left or right position. Color tuning setting. a.
c.
Use correct lamp type. Troubleshooting
Symptom Lamp does not...
Service Manual - Page 46
...?
a. Replace defective motor.
Fully engage lamp changer control. Is Fresnel lens installed with bowed side up . a.
from inside projector.
Section 2-3
4-2 3-1 2-6 5-4-3 5-2-2
5-5 5-5 1-2-2 4-2-1 2-4 5-2-2
5-3-3
5-5 5-5
3M 9800 Service Manual
6-3
Rotate projector left or
light beam is not projected
right until image height is
at 90_ angle to the high setting. tion...
Service Manual - Page 47
... Plugs (Post Shunts)
STD - -
If the LED remains red, replace the circuit board.
6.
OPC Jumper Plugs
Note Figure 6-1 shows jumper plugs (post shunts) set to lower the SPS value.
3M 9800 Service Manual
6-4 If the standard switch point settings yield a short lamp life, then set the STD jumper to the lamp. STD - If the AC line voltage is a voltage sensing...
Service Manual - Page 48
...
3M 9800 Service Manual
6-5 Technical Assistance Center:
For information or technical support on any 3M Visual Systems Division product, contact the Technical Assistance Center via telephone, fax, Profs or Internet.
• Telephone: 1-800-328-1371 • Fax: 512-984-5105 • Profs: VSD EPS SERVICE CENTER • Internet: [email protected]
Section 6 - 9800 Overhead Projector...
Service Manual - Page 49
Troubleshooting
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3M 9800 Service Manual
6-6 9800 Overhead Projector
Section 6 -
Service Manual - Page 50
Electrical Diagrams
9800 - Electrical
LEGEND
7-2. Wiring Wire jumpers are identified by numbered callouts. Electrical
Section 7 - 9800 Overhead Projector
7-1. Refer to the 9800 Illustrated Parts Breakdown manual for the corresponding part number.
27
28 1 2
3
4
29
6 7
8
5
15
31 30
23 22 21 20
1619
18 17
16
13
14 13
32
24
26
25
3M 9800 Service Manual
7-1
Service Manual - Page 51
Electrical Diagrams
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3M 9800 Service Manual
7-2 9800 Overhead Projector
Section 7 -
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