QEO Multi-Pointer User manual

Multi-Pointer
5-Point Laser
Service Manual

Multi-Pointer
Service Manual
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Contents:
1 Service Manual Changes documentation.....................................................................3
2 Safety Instructions Laser..............................................................................................4
3 Technical data ..............................................................................................................6
3.1 Multi-Pointer 5-Point Laser....................................................................................6
4 Instrument Disassembly ...............................................................................................7
4.1 Complete Disassembly..........................................................................................8
4.2 Main part Disassembly..........................................................................................9
4.3 Core part Disassembly........................................................................................10
4.4 Baseboard part Disassembly...............................................................................12
4.5 Base part Disassembly........................................................................................13
4.6 House part Disassembly......................................................................................14
5 Instrument Assembly..................................................................................................16
6 Circuit Connection Drawings ......................................................................................17
7 Accuracy Check and Adjustment................................................................................18
7.1 Set up the reference............................................................................................18
7.2 Accuracy Check...................................................................................................19
7.3 Accuracy Adjustment...........................................................................................20
8 Alarm adjustment........................................................................................................23
9 Solutions to Usual Malfunctions..................................................................................24
10 Spare Part List ........................................................................................................24
11 About us..................................................................................................................25
12 Index.......................................................................................................................26

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Service Manual
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1 Service Manual Changes documentation
No. of
change
Description of change Date of
change

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Service Manual
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2 Safety Instructions Laser
Intended use of the instruments
The instrument emits a visible laser beam in order to carry out the following measuring tasks (depending on
instrument):
•Setting up heights, horizontal and vertical planes, right angles,
•plumbing points.
Safety instructions
Please follow up instructions given in operators manual. Study manual carefully before use of instrument.
•Do not stare into beam or view directly with optical instruments.
•Laser beam can lead to eye injury.
•Do not aim laser beam at persons.
•The laser plane should be set up above eye level of persons.
•Use instrument for measuring jobs only.
•Do not open instrument housing.
•Repairs should be carried out by authorized workshops only.
•Please contact your local dealer.
•Do not remove warning labels or safety instructions.
•Keep instrument away from children.
•Do not use instrument in explosive environment.
Specific reasons for erroneous measuring results
•Measurements through glass- or plastic windows;
•Dirty laser emitting windows.
•After instrument has been dropped or hit. Please check accuracy.
•Large fluctuation of temperature:
•if instrument will be used in cold areas after it has been stored in a warm area (or the other way
round) please wait some minutes before carrying out measurements.
Care and Cleaning
•Please handle measuring instruments with care.
•Clean with soft cloth only after any use. If necessary damp cloth with some water or pure alcohol. If
instrument
•is wet clean and dry it carefully.
•Pack it up only if it is perfectly dry.
•Transport in original container / case only.
Laser classification
The instrument is a laser class 2 or 2M laser product. (please refer to technical data of each instrument)
according to IEC 60825-1:2001:11.
It is allowed to use it without further safety precautions.
Eye protection is normally secured by aversion responses and the blink reflex.

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Service Manual
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Electromagnetic acceptability (EMC)
It cannot be completely excluded that this instrument
•will disturb other instruments (e.g. Navigation systems)
•will be disturbed by other instruments (e.g. intensive electromagnetic radiation nearby industrial
facilities or radio transmitters).
CE-Conformity
Instrument has CE-mark according to EN 61326:1997, EN 55022, EN 61000-4-2/-3.
Warranty
This product is warranted by the manufacturer to the original purchaser to be free from defects in material
and workmanship under normal use for a period of two (2) years from the date of purchase.
During the warranty period, and upon proof of purchase, the product will be repaired or replaced (with the
same or similar model at manufacturers option), without charge for either parts or labour.
In case of a defect please contact the dealer where you originally purchased this product.
The warranty will not apply to this product if it has been misused, abused or altered. Without limiting the
foregoing, leakage of the battery, bending or dropping the unit are presumed to be defects resulting from
misuse or abuse.
Exceptions from Responsibility
The user of this product is expected to follow the instructions given in operators’ manual. Although all
instruments left our warehouse in perfect condition and adjustment the user is expected to carry out periodic
checks of the product’s accuracy and general performance.
The manufacturer, or its representatives, assumes no responsibility of results of a faulty or intentional usage
or misuse including any direct, indirect, consequential damage, and loss of profits.
The manufacturer, or its representatives, assumes no responsibility for consequential damage, and loss of
profits by any disaster (earthquake, storm, flood etc.), fire, accident, or an act of a third party and/or a usage
in other than usual conditions.
The manufacturer, or its representatives, assumes no responsibility for any damage, and loss of profits due
to a change of data, loss of data and interruption of business etc., caused by using the product or an
unusable product.
The manufacturer, or its representatives, assumes no responsibility for any damage, and loss of profits
caused by usage other than explained in the user manual.
The manufacturer, or its representatives, assumes no responsibility for damage caused by wrong movement
or action due to connecting with other products.

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Service Manual
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3 Technical data
3.1 Multi-Pointer 5-Point Laser
Self leveling range ± 3.0°- ± 5.0°
Accuracy ± 2 mm / 10 m
Operating range Ø 30 m*
Damping system magnetic
Operating time / power supply 48 h (3 x AA alkaline)
Temperature range -10°to +40°C
Visible Laser diode 2 x 635 nm
Laser class 2
Weight (instrument only) 0.74 kg
Tripod mount 5/8" + 1/4"
Sizes 80 x 98 x 101.6 mm
* depending on room illumination
Subject to technical changes without notice

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4 Instrument Disassembly
The Multi-Pointer is a kind of very precise instrument. If there is any trouble, repair and
servicing are to be performed only by “geo-Fennel” or authorized service centres. When
you repair this instrument, you should conform to this manual. The unprofessional man,
please do not disassemble the instrument or perform any internal servicing by you.
Fig. 1
Fig. 1:Appearance of the instrument and Accessories

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Service Manual
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4.1 Complete Disassembly
(As shown in Fig. 2 and Fig. 3)
Fig. 2 Fig. 3
1. Open the battery door (4), take out 3 AA battery;
2. Screw off a cross plate screw M2.5×10 (1) by a cross screwdriver, take off the
knob1 (2);
3. Using a cross screwdriver to screw off four sink screws M2.5×12 (6) through the
bottom aperture (7) (as sown in the Fig.2). (You can screw off a screw per rotating
90
o
)
4. Draw the power plug and indicator light plug connected with the main circuit board
module and house part. You can take apart the house part (3) from the main part
(5). (See Fig.3)

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4.2 Main part Disassembly
(As shown in Fig. 4, Fig. 5, Fig. 6, Fig.7 and Fig. 8)
Fig. 4 Fig. 5
1. Cut off the connection between the power and the main circuit board module by
electric iron (5-2). Screw off two cross plate screws M2×8(5-1) by a screwdriver.
Take off the switch (see Fig.4)
2. Cut off the four connections between the instrument core and the main circuit board
module by electric iron. Screw of two cross sink screws M2×4(5-4) by a screwdriver.
Take off the main circuit board module (5-3) (see Fig.5)
Fig. 6 Fig. 7
3. Screw off two cross plate screws M2×8(5-7) and four cross plate screws M2.5×14(5-5)
by a cross screwdriver. Take out the core part (5-6) (see Fig.6).
4. Meanwhile take out the press ring (5-9) and two press springs (5-8) (see Fig.7).

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Fig. 8
5. Screw off four cross plate screws M2.5×6 (5-10) by a cross screwdriver. Take apart
the baseboard part and base part (5-12) (see Fig.8).
4.3 Core part Disassembly
(As shown in Fig. 9, Fig. 10 and Fig. 11)
Fig. 9
1. Using an electric iron to cut off the four
connections between the hairspring board
module1 (5-6-1) and 2 (5-6-3). Take off the hairspring board module1 (5-6-1).
2. Screw off two cross plate screw M2×5 (5-6-2). Take off the hairspring board module
2 (5-6-3) (see Fig.9).

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Fig. 10
3. Screw off four cross plate screws M2×12 (5-6-4),
take apart the gimbal module (5-6-5).
4. Screw off the inner hexagon tightening screw M3×3 (5-6-7) by an inner hexagon
spanner. Screw off the pendulum module (5-6-6) (see Fig. 10).
Fig. 11
5. Using an electric iron to cut off all connections between the laser source and the
transferring board (eight pieces in all).
Screw off two cross plate screws M2×4(5-6-8). Take off the transferring board
module (5-6-9);
6. Screw off four cross plate screws M2×8(5-6-10),
take out the prism module (5-6-11);
7. Screw off four cross plate screws M2×8(5-6-12), taking apart three same laser
sources respectively1 (5-6-13);
8. Screw off four cross plate screws M2×8(5-6-14), taking apart the laser source
module1 (5-6-13) (see Fig. 11)

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4.4 Baseboard part Disassembly
(As shown in Fig. 12, Fig. 13 and Fig. 14)
Fig. 12
1. Screw off four cross-sink screws M2.5×5(5-11-2), take apart four connecting poles
(5-11-1)
Note: There are two kinds of connecting pole.
Two poles with M2 screw eyes are in the front. (see Fig.12)
Fig. 13
2. Screw off two cross plate screws M2×3(5-11-3).
Take off the buzzer module (5-11-4);
3. Screw off three plate screws M2×6 (5-11-5).
Take off the partition ring (5-11-6) (see Fig.13)

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Fig. 14
4. Screw off two plate screws M2×4(5-11-7).
Take off the bottom limit-position cover (5-11-8);
Take out six pieces magnet (5-11-9)
Note: The upturned polarities of the two border-upon magnets are reverse
5. Screw off four plate screws M2×4(5-11-13). Take off the spindle base (5-11-12) and
spindle module (5-11-11)
4.5 Base part Disassembly
(As shown in Fig. 15)
Fig. 15
1. Use a screwdriver to loosen two notch tightening screw (5-12-1). Take off the press
ring (5-12-2)
2. Take off the Poly-four-fluorin Gasket (5-12-3)
3. Take out the chassis (5-12-4)
4. Take out the bottom spindle (5-12-6)
5. Twist the press ring2 (5-12-8)
6. Take out the glass (5-12-7) (see Fig.15)

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4.6 House part Disassembly
(As shown in Fig. 16, Fig. 17, Fig.18, Fig. 19, Fig. 20 and Fig. 21)
Fig. 16
1. Screw off two plate screws M2×4(3-2). Take off the coping module (3-1) See Fig.16
Fig. 17
2. Screw off two plate screws M2×4(3-6). Take off the front cover module (3-4)
3. Take out indicator light (3-5)
4. Take off the plastic screw (3-3) (See Fig.17)

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Fig. 18 Fig. 19
5. Screw off two cross-sink screw M2×4(3-8). Take out the right cover module (3-7)
(see Fig.18)
6. Screw off two cross-sink screw M2×4(3-10). Take out the left cover module (3-9)
(see Fig.19)
Fig. 20
7. Screw off four plate self-tapping screw ST2.2×6.53-11).
Take out battery pack (3-13)
8. Take off the piece fixing the lead (3-12) (See Fig.20)
Fig. 21
9. Take off the whole crust (3-16)
10.Take apart the left (3-14) crust and right crust (3-15). (See Fig.21)

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Service Manual
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5 Instrument Assembly
(as shown in Fig. 1 to Fig. 21)
As shown in the figure, the instrument could be assembled by screwing on the tightening
pieces in various places from the top down and according to the reverse order of
instrument disassembly.

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6 Circuit Connection Drawings
(as shown in Fig. 22)
Fig. 22

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7 Accuracy Check and Adjustment
7.1 Set up the reference
Fig. 23
1. Show as Fig. 23, Put a flat stand 5m away from the three-side walls respectively. The stand is about 1m high.
2. Put a bracket with a hole in the center on the stand.
3. Draw a 3mm hole on one right-angle surface of the prism. Put the prism below the bracket and on the flat. The
hole on the right-angle surface must be on one line with the bracket center hole. Adjust the angle to make the
down beam emitted by the instrument be reflected on the wall near the position P;
4. Prop up the theodolite above the bracket using a tripod. The theodolite down laser point be on one line with the
center of the 3mm circle (under-mentioned as down point near the light)
5. Use the theodolite to line out three vertical lines on the wall respectively. All angle between the three vertical
lines are right angle.
6. Put a high-accuracy instrument on the bracket. Turn on the instrument to make the front laser point project on
the wall. Use the optic level and the ruler near the light to line out three horizontal lines having the same height
on the wall.
7. Mark the three cross points of the three vertical lines and the three horizontal lines A, B, C, which is the left, face
and right spot as the reference point.
8. Take a high-accuracy instrument and make its down point be on one line with the down point near the light.
Then put a right-angle prism on the bracket. Adjust the angle to make the up laser point emitted by the
instrument be reflected on the wall near the position O;
9. Make the front laser point face the wall. Mark the up and down spot reflected through the prism on the wall as O1
and O2. Then rotate the instrument by 90
o
, 180
o
and 270
o
clockwise, and mark O2, O3, O4 and P2, P3, P4;
10. Take the cross point of O1, O2, O3, O4, This cross point just is the reference point for the up laser point. Take
the cross point of P1, P2, P3, P4, This cross point just is the reference point for the down laser point. (See Fig.
24)
Fig. 24

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7.2 Accuracy Check
Fig. 25
The way to check the error:
1. Put the instrument shown as Fig. 25 on the bracket. Connect with the power, and
turn on the Power switch.
2. Make the down be on one line with the down point near the light. The front point
faces the vertical line, which B is on.
3. Observe the five centers of the five spots whether in 2mm circle of the reference
point A, B, C, O and P. If not, the instrument needs adjusting. (See Fig. 26)
Fig. 26
The way to adjust:
First you need to adjust the up and down point accuracy. Then adjust the other laser point.
The way is as follows:

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7.3 Accuracy Adjustment
State 1 State 2
Fig. 27
1. When the up and down laser point error is as shown in the Fig. 27, you can adjust
the power adjusting screw to calibrate (see Fig. 28). When the instrument is in the
state 1, you can loose the screw 2 and screw down 1. When the instrument is in the
state 2, you can loose the screw 1 and screw down 2.
Fig. 28