old and new model

7/30/2019 Old and New Model

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REPAIR MANUALFOR

THEODOLITE & TOTAL STATION

OF

SOUTH

July, 2007

PDF " pd f Fac t or y " www. f i n ep r i nt . c om. c n
http://www.fineprint.com.cn/http://www.fineprint.com.cn/http://www.fineprint.com.cn/http://www.fineprint.com.cn/http://www.fineprint.com.cn/http://www.fineprint.com.cn/


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CONTENTS

1. ANGLE MEASUREMENT2

1.1 Adjustments of Analogs (Photo-electric convertor) . .2

1.2 Test Points on 300 Series Main Board ..5

1.3 Adjustment of Zero-point Voltage .6

1.4 Adjustment of CCD Sensor .. .8

2. EDM (infrared)...12

2.1 Entering the Test Mode ..12

2.2 Adjustment of High Voltage....................................................................13

2.3 Circuit Boards of the EDM..15

2 . 3 . 1 E m i t t i n g B o a r d 1 5

2.3.2 Intermediate Frequency Board. .16

2.3.3 Optical Coupler .18

2.4 Beams Alignment 19

2.5 Slip Ring.21

3. EDM (laser)...22

3.1 Entering the Test Mode ..22

3.2 Circuit Board of the EDM ..22

3.3 Firmware Update..24

3.4 Optical Coupler .24

3.5 Beams Alignment 25

3.6 Slip Ring.27

4. CALIBRATIONS..................................................................................................29

4.1 Plate Vial ..294.2 Circular Vial ..29

4.3 Plumb Line . .30

4.4 2C. . 30

4.5 High-low Difference ..31

4.6 Adjustment of Compensators.. 32

4. 7 I Angle.35

4 . 8 C o a r s e C o l l i m a t o r . . 3 6

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4.9 Optical Plummet .37

4.10 Instrument Constant.38

4.11 Size o f La ser Point o f ET. . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . . . .. . . .38

5. AXIS BLOCKING40

5.1 Vertical Axis Blocking..40

5.2 Horizontal Axis Blocking.40

6. SOFTWARE DOWNLOADING41

7. COMMON PROBLEMS.....42

7.1 Common Problems in Angle Measure...42

7.2 Common Problems in Peripheral Equipment .43

7.3 Common Problems in EDM...44

7.4 Common Problems in Axis.50

8. TOOLS & CHEMICALS .... .51



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1. ANGLE MEASUREMENT

1.1 Analogs for ET and 300 Series (infrared, Photo-electric Convertor)

1. Connect probe CH1 of oscilloscope to CP1, CH2 to CP2. And place the pliers ofprobes to GND of CSY-S. Make sure that the buttons on the probes should be placed

to 10.

2. Preparation: press CH1

MENU, and shift the "Coupling"

item to "ground", then turn the

"POSITION" button above "CH1

MENU" to make the "1" on

the left of the screen to the

bottom line until it changes to"1". Then we change the

"Coupling" item back to "DC".

Do as the same way with CH2.

3. Connect the CSY-2 and analog

with the white connecting cable

which is attached to the CSY-2

machine.

3. Set on the oscilloscope: Turn the button VOLTS/DIV below the CH1 MENU

to make CH1 under the bottom line of screen to be 500mV; Turn the button

VOLTS/DIV below the CH2 MENU to make CH2 under the bottom line of

screen to be 500mV.

5. Press DISPLAY, shift Format to X~Y, rotating the rasters, we can see the

circle. Adjust the adjusting screws on analog circuit board W2 and W3 with a screw

driver:

W2: for adjusting the roundness of the figure

W3: for adjusting the diameter of the figure

Roundness: as round as possible

Diameter of the figure: 2.5~3 grids (1.3V~2.0V).

W1 W2 W3 W4

P.S. on the oscilloscope, when CH1=500mV, CH2=500mV,

1 grid = 0.5V; 1 division =0.1V; 1 gird = 5 divisions

Figure 1.11

Figure 1.12



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6. Shift the Format to YT, press MEASURE button and we can see the tow sin

waves. Adjust screw W2 to make the Peak-Peak value of both CH1 and CH2 in the

range of 1.3~2.0V. Adjust W3 to make the two sin waves overlapped (the difference

between them should be less than 1 division).

7. Adjust the W1 and W3 to make the Mean value of CH1 and CH2 at about2.50.2V.

Adjustment of the duel paths of the signal: The Lisharing figure is actually combined

by the two sin waves of each signal. For each signal, the peak-to-peak value of each

sin-wave signal should be: 1.3V


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First loosen the small group of screws, and then adjust thebig group of screws on

the horizontal axis.

Loosened: decrease the signal value

Tightened: increase the signal value

The performance of the three groups of screws on the horizontal axis:

Big group: to adjust the tolerance between the two rasters

Medium group: to dismount the horizontal rasters

Small group: to fix the position of the two rasters

Figure 1.13



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1.2 Test Points on 300 Series Main Board (infrared)

Main board is core of electronic system which almost musters all electrical signals

and plug-in devices and so on.

Test points of the CH1CH2 signals of Horizontal analog

Test points of the CH1CH2 signals of Vertical analog

F

Zero-point voltage

D

E

Zero-point signal

C

(Note: we only test the 3rd

and 3th

test points of theodolite main board

TR1: to adjust the

upper analogs zero-

point voltage

TR2: to adjust the

lower analogs zero- Figure 1.21 300 Series without Laser

point voltage

Check the signals of both

analogs, if the waves are not

good: check analogs; if

analogs are good, replace the

main board, because main

board must be broken.



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1.3 Adjustment of Zero-point Voltage

(Only available for vertical analogs)

1. Press CH2 MENU to switch off the CH2 signal. Just use CH1 probe. Switch to

state of1, 500mV, 25.0mS

2. Firstly, on the CSY-2 machine, put theCH1 probe to Voset, and its plier to

GND. And connect the white connecting cable of CSY-2 to the analog. Rotating the

telescope of instrument on first position, we can see zero-point signal wave (see the

picture below).

Distance between the horizontal line and the peak

point L should be between 1 grid and 2 grids. If not,

adjust screw W3 on the analog properly.

Figure 1.31

3. Turn on the instrument. Put the probe at test point E(TP3 for theodolite) of main

board (see P3) and its plier to ground (the position of screw of cover), while rotating

the EDM, and we get the wave of zero-point signal; then put the probe at point F(TP3

for theodolite), we get the zero-point voltage line. So it is with point C and D only for

total station.

Wave of zero-point signal

Figure 1.32

Zero-point signal Zero-point voltage line

Zero-point voltage line

2 divisions for theodolite

3 divisions for total station

L



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4. Adjust the screw between TP1 and TP2 for theodolite or the TR1 and TR2 for total

station (see P3) to make the zero-point voltage line in the position as described above.

(For theodolite, 2 divisions above peak line; for total station, 3 divisions above peak

line).

5.Press MEASURE on oscilloscope, and check the test points on main board (seepicture on P5) just to see the Peak-Peak values and Mean values of each channel

of the four analogs (2 for Horizontal analog, 2 for Vertical analog), are all up to the

requirement. If not, readjust the analogs.

Note: If the zero-voltage line is too high, E08 will appear; if the zero-voltage line is

too low, OSET will fail, OSET will appear on the screen, or even it will sometimes

cause incorrect reading.



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1.4 Adjustment of CCD Sensor

ET and 300 Series with laser and 600 Series Total Station use angle measurement

system of absolute encoder and CCD sensor, which is different from 300 Series

without laser and theodolite that use raster. With absolute encoding circle, the

instrument can be turned on without initialization, measuring results are more

accurate.

Working principle: obtaining the code information from specific position on the

circle of photoelectric detector. Multiplexer will conclude if horizontal disk or

vertical disk is working, then all information will be transmitted to microprocessor

CPU to calculate. CPU will emit instructions to guide the operation, and then transmit

the result to display.

Figure 1.41 Absolute Encoder Circle Figure 1.42 Bar Code

Inspection Steps and Criterion:

1. On the oscilloscope, use CH1or CH2, shift to stateY T, 1.00V, 25S;

2. Turn on the total station or ET;

3. Place the pliers of probe to ground (the position of screw of cover), put the probe at

the test points C and D (for vertical disk), or A and B (for horizontal disk);

3. Cover main board with a black cloth to prevent light from disturbing the signal.

5. Rotate telescope gently at the meantime.

6. Check the arch wave on the oscilloscope. The standard of the arch wave should be:

a. the arches should be symmetrical;

b. the peaks of the wave should be more or less on the same horizontal line.

c. Shift to state YT, 1.00V, 500S, there is a big half of ellipse on the screen.



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1V

2.8~3.2V

Peaks

Arch Symmetry0

Figure 1.43

Figure 1.44 300 Series with laser

Upper CCD,

Vert. D,the 2nd

leg

Lower CCD,

Vert. C, the 2nd

leg

CCD with short

wires, Hr. B, the

2nd

leg

CCD with long

wires, Hr. A, the

2nd

leg



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D upper CCD, Vert.

the 3rd

leg

.

C lower CCD, Vert.

the 3rd

leg to the last

B CCD with short wires, Hr.

the 3rd leg

A CCD with long wires, Hr.

the 3rd

leg

Figure 1.45 600 Series Main Board

Figure 1.46 ET with Laser

Upper CCD,

Vert. D,the 3rd

leg

Lower CCD,

Vert. C, the 3rd

leg

CCD with short

wires, Hr. B, the

3rd

leg

CCD with long

wires, Hr. A, the

3rd

leg



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Adjusting Steps:

1. Adapt the CCD sensor to a proper

position until the arch wave is up to

standard;

2. If the arch wave is not good enough,

adjust the four fixing screws or the two

fixing screws on diode, to move the

diode to the center of the bracket.

3. Clean the glass surface of the CCD

and encoder disk with chemical solution

(alcohol: ether=3:7). Do it carefully

without any scratching.

3. Rotate disk and check the signal to

insure that the waves from all part of the

disk should be in good condition.

5. Finally, restore those screws and add

some varnish to fix them.

Adjustments of both the horizontal CCD sensor and vertical CCD sensor are the same,

except for the different locations of test points: A and B for horizontal, C and D for

vertical.

Figure 1.47 Adjust the position

Fixing Screw

Clean the glass surfaces

of encoder circle

and CCD sensor.

Figure 1.48

Figure 1.49



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2. EDM (Electronic Distance Measure, infrared)

2.1 Entering the Test Mode

Procedures:

1. Enter the test mode: for 300 Series, POWER++F1 (5 times)+F3 (5 times); for600 Series, PowerParaSystemState.

Figure 2.11

2. By the implication on the screen, choose State 3, and go to Inside Path.3. In such state, the signal value(SIG) should be in accordance with the following

criterion:

TAPE 0/1, SIG 2.5V, when rotating EDM, SIG value in the test mode should

be within 2.22.7V, otherwise, re-adjust the high voltage.

TAPE 3, SIG=1.62.5V.

Adjustment:

Inside path, no signal value:

Check emitting board, receiving board, and intermediate frequency board.

Inside path, signals exist, but:

Tape 0, 1, 3, lower than required, problem with intermediate frequency board;

Tape 0, 1, signals is good, but signal of Tape 3 not good, check the receiving board.

If signals of both inside and outside path are right, but hi-voltage is not adjustable, it

is problem with fibers.

After entering test mode, the path changes automatically between inside and outside.

Check the slip ring.

If there is big change in SIG under inside or outside path, the problem is with slip ring

or light reducing sheet.



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2.2 Adjustment of High Voltage

On the back cover of every instrument, there is a tag on which the recommended

voltage is written. And the actual working voltage attained with multimeter should be

1015V less than the recommended voltage.

For example, the recommended voltage on the

cover is 175V, then working voltage should be

within the range of 160~165V

There are two methods of adjusting the high

voltage.

Method 1: Adjusting high voltage through

high voltage holding screw. This method is for

fine adjustment of hi-voltage.

1) Loosen the fixing screw of the holdingscrew.

2) Use a screw driver, and adjust the holdingscrew to make the high voltage be up to

the standard range.

(According to experience, when the SIG

value increases by 0.1V, the high voltage

would decrease 1V, vice versa.)

3) Power off to save the newly-adjustedvoltage data.

4) Turn on the instrument, and checkwhether the high voltage is in the range of

10~15V less than recommended voltage.

Otherwise, repeat the steps above.

5) Tighten the fixing screw.Figure 2.21

Method 2: Adjusting high voltage through replacing light-reducing sheet. This

method is for coarse adjustment of hi-voltage. Replace or add a light-reducing sheet

of suitable darkness on either side of the inside path bar with varnish.If the high voltage is higher than normal, replace for a lighter light-reducing sheet;

If the high voltage is lower than normal, replace for a darker light-reducing sheet.

Note:

When adjusting the holding screw, better not overturn it (no more than two rounds), or

else it will cause light leaking.

Two ways of diagnosing light leaking:

Check through the EDM lenses in Inside Path state of the test mode to see whether

there is a red light point. If so, light leaking exists.

Cover the EDM with a prism. Shake the prism and see whether the SIG value in

Test Point of Hi-voltage



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the Inside path of test mode changes or not. If it changes, light leaking exists.

Solution to light leaking:

Readjust the holding screw back to a proper position. If the high voltage is not within

correct range, try to replace light-reducing sheet, see Method 2.

If the high voltage still fail to adjust after using the above two methods, there is

probably something wrong with the intermediate frequency board. Replace for a new

one.



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2.3 Circuit Boards of the EDM

2.3.1 Emitting board

Check the testing points under the test mode.

the fourth legPower leg, Voltage 6.0Vit is connected with main board, slip ring,

and emitting board. If the voltage here is not around 6.0V, then we have to check

with multimeter to see whether it has problem with EDM main board or slip ring.

Voltage supplied to emitting tube 5V

if not around that value,

EDM main board is damaged.

Voltage of emitting tube: 3.3~3.5V,

if not in the range, emitting board or

emitting tube is damaged.

phase locking voltage =1~3V

if not in the range,

replace emitting board.

A B C D

A: connected to slip ring

B: power port from main board to frequency board Figure 2.31

C: power port of light path motor

D: power port of light reducing motor



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2.3.2 Intermediate Frequency Board

Checking the testing points must be under Test Mode Principle and power on.

Figure 2.32

CZ10: Input Voltage of receiving board 3.9V; this port is connected to receiving

board. If not, replace the receiving board.

CZ9: voltage of frame oscillation 1.6V (600 series) or 2.5V (300 series)Note: If the volt is not right, we have to unsolder the cable on back side of the board,

and test the volt again. If it is ok, the problem is with intermediate frequency board; if

still not, problem is with emitting board.

CZ3: high voltage test point (10~15V less than recommended value, see procedures

in Hi-voltage Adjustment P13).

CZ7:Hi-voltage controlling voltage=1~3V.

CZ5: bandpass amplification wave(see P18 ).

CZ6: shaping amplification wave.

CZ8: distance measuring signal wave.



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CH1 500mV

M 500us

2 to 3 grids

Figure 2.33 CZ5: bandpass amplification wave

CH1 2.00V

M 100us

3 grids

Figure 2.33 CZ6: shaping amplification wave

CH1 2.00V

M 100us

3 grids

Figure 2.35 CZ8: distance measuring signal wave



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2.3.3 Optical Coupler

Optical Coupler is in the EDM. Check the signal wave while rotating EDM, as shown

in the picture.

test point

fixing screws

Standard of wave: Figure 2.36

The widths of each wave column CH1 2.00V M 1.00uS

should be approximately the same

If not,

Loosen the two fixing screws;

Move the coupler board up or

down to a proper position, and make

the edge of the circle sheet go across

about 1/2 of the coupler foot. (See

the Figure below).

Check the signal wave. If the

wave is not desirable, repeat the Step

.

coupling signal wave

Figure 2.37

Figure 2.38 Figure 2.39

optical coupler

dimmer sheet

optical coupler

foot

1/2



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2.4Beams Alignment

(Coaxiality of emitting signal, receiving signal and reticle center of EDM)

You must do 2C before beams alignment. Three points: emitting signal point (red),

receiving signal point (the color depends on the outside light source you use) and the

center point of reticle.

Three points deviation may cause error distance in distance measurement. Sometimes

when you aim at the center of prism you can not get measuring result but it is ok when

you aim the brink of prism.

Figure2.41 Beams Alignment


1. Put the total station in front of a collimator and adjust it to infinity distance until you

can see the reticle of collimator clearly; (note: there are two positions of distance in

the collimator, the near distance point and the infinity distance point. The scale of the

infinity distance point is a bit smaller.)

2. Adjust an electronic theodolite to infinity distance, too;

3. Objective lens of the two instruments must be opposite, and we use the telescope of

the theodolite to observe the EDM. In order to make image clear, wed better put a

white paper as background;

3. Turn the total station on, enter distance measurement mode, and focus it until reticle

of total station and red point (under test mode) can be clearly viewed;

5. Observe whether the red point and center point of reticle of total station are

overlapped. If overlapped, they are good, otherwise it needs to be adjusted.

The checking procedures for receiving fiber is almost same with checking emitting

fiber, but you need to add an outside light source at the head of receiving fiber. See

the pictures below, remove screw A, take off the tube base, and add an outside light

source in the small hole.



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Figure2.42 Screw A

receiving fiber (short) emitting fiber (long)

3 1

3 2

Figure 2.44

Adjusting Steps:

A. Adjustment of Emitting Fiber

1) Make sure that the machine is in distance measurement mode.

2) Loosen the fixing screw 1 on emitting fiber (above figure), move the fiber higher or

lower, make the facula clearest, then fix the screw 1.

3) Loosen the fixing screws 2 on emitting fiber board, and then adjust the position of

the bracket of emitting tube to superpose the center of facula with the center of reticleof total stations. Finally fix the screw and add some varnish on them.

B. Adjustment of Receiving Fiber.

1) Add an outside light source on receiving fiber.

2) Loosen screw 3, move the fiber to find facula in view field, adjust the position of

fiber, make the facula be clearest, and then fix the screw.

3) Loosen screws 3, adjust the bracket of receiving tube, superpose the facula with the

center of reticle, finally fix the screws and add some varnish on them.

3) Remove outside light source, install the original receiving board.

Figure 2.43 add an outside light source

(diode) to the receiving tube.



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2.5 Slip Ring

Slip ring is the electric connection between EDM and main board of total station.

Faults of slip ring will mainly cause the failure of power supply to EDM or failure of

data communication.

electronic brush slip ring

GND

CLOCK

DATA

POWER

(on emitting board)

Figure 2.51

Figure 2.52 legs connected to slip ring

Inspection

Take off the battery box. Use OHM of multimeter to check if the four leads of slip

ring get short circuit or open circuit. If so, restore them or replace for a good slip ring.

Under Test Mode/State 3/Inside, rotate the EDM, if the value of SIG changes

between normal value and 0 at times, then it indicates there is some problem with the

slip ring.

(Power Leg)Volt.6.0V

Caution: Make sure that the legs are well connected

to the slip ring correspondingly, neither open circuit

nor short circuit.



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3. EDM (Electronic Distance Measure, laser)

Measure Distance Principle of Laser: No-prism Total Station with measure distance

of phase mode uses frequency of radio wave band, modulating laser beam range and

measuring phase delay generated by modulating light that goes and backs survey lineonce. Then according to the wave length of modulating light, convert the distance

which the phase delay represents. Such an instrument is applied in precise measure

distance, and its precision is millimeter level.

3.1 Entering the Test Mode

Procedures:

For 300 Series:

1. PowerESCF1 (4 times) F4 (4 times) F1F4;

2. By the implication on the screen, choose State 3, and go to inside path;

3. Key into recommended voltage;

4. Signal Value (in light path) which is irrelevant to tapes (tape 0, 1, 2, 3, 4) should be

between 1000mV and 1500mV.

Adjustment:

If signal value is not within that range, press the black sheet and adjust the screw

below.

Figure 3.11

3.2 Circuit Board of the EDM

Test points:

High voltage105 V Capacitance voltage15 V Capacitance voltage23.6 V Capacitance voltage3 is equal to battery voltageIf there is something wrong with EDM, you should check above three capacitances

voltage first. If one of capacitances voltages is not accord with normal value, wesuggest you change a new EDM mainboard.



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main oscillating frequency = 2 9. 9 6 72 4 22 kHz . If main oscillating frequencymeasured by frequency meter is not within the range, please adjust the screw .

Screw for adjusting main oscillating frequency Lock phase voltage1. 5 V

Figure 3.21 test points on EDM mainboard

6-pin socket: electric lines 1, 3 and 5 are plus which are connected to plus polarity of

light reducing motor, in-path motor, out-path motor respectively. Sign + is marked

on the plus polarity on motors. 1 and 2 are connected to light reducing motor, 2 and 3

are connected to in-path motor, 5 and 6 are connected to out-path motor;

4-pin socket: connect to slip ring;

3-pin socket: connect to optical coupler;

1-pin socket: connect to light resource of emitting unit.



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3.3 Firmware Update

For 300 Series

1. Connect total station to PC with data communication cable;

2. Press Power+F1 to prepare updating;

3. Clickprogram to start updating;

4. Beep three times means firmware update finishes;

5. According to implication on the screen, restart, and then power off.

3.4 Optical Coupler

Optical Coupler is under the motors. Check the signal wave while rotating EDM, as

shown in the picture.

test point

fixing screws

Figure 3.41

Standard of wave:

The widths of each wave column CH1 2.00V M 1.00uS

should be approximately the same

If not,

Loosen the two fixing screws;

Move the coupler board up ordown to a proper position, and make

the edge of the circle sheet go across

about 1/2 of the coupler foot. (See

the Figure below).

Check the signal wave. If the

wave is not desirable, repeat the Step

.

Figure 3.42

optical coupler

coupling signal wave



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Figure 3.43

3.5 Beams Alignment

(Coaxiality of emitting signal, receiving signal and reticle center of EDM)

You must do 2C before beams alignment. Three points: emitting signal point (red),

receiving signal point (the color depends on the outside light source you use) and the

center point of reticle.

Three points deviation may cause error distance in distance measurement. Sometimes

when you aim at the center of prism you can not get measuring result but it is ok when

you aim the brink of prism.

A. Adjustment of Emitting Light Source

1) Paste a piece of paper with a reticle on the wall which is 15m from total station.

2) Aim at the reticle of the paper, turn on the equipment to measure;

3) Loosen the fixing screw, adjust the up and down screw, left and down screw to

move the red point to overlap with the center of the reticle;

4) Finally fix the fixing screw.

fixing screw up and down left and right

Figure 3.51 Emitting Unit

dimmer sheet

optical coupler

foot

1/2



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B. Laser Focus

Adjust the screw under the mirror to make the red point smallest and lightest. There is

a position where the red point is the smallest and lightest.

Figure 3.52

C. Adjustment of Receiving Fiber with Black Cover

1) Put the total station in front of a collimator and adjust it to infinity distance until you

can see the reticle of collimator clearly; (note: there are two positions of distance in

the collimator, the near distance point and the infinity distance point. The scale of the

infinity distance point is a bit smaller.)

2) Adjust an electronic theodolite to infinity distance, too;

3) Objective lens of the two instruments must be opposite, and we use the telescope of

the theodolite to observe the EDM. In order to make image clear, wed better put awhite paper as background;

4) Add an outside light source on receiving fiber;

5) Loosen screws 1, adjust the bracket of receiving tube, superpose the facula with the

center of reticle, and then fix the screws 1 and add some varnish on them;

6) Loosen the screw 2, move the fiber to find facula in view field, adjust the position

of fiber, make the facula clearest, and then fix the screw 2.

7) Remove outside light source, install other parts.

Figure 3.53 Screw A Figure 3.54 add an outside light source(diode) to the receiving tube.



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Figure 3.55

3.6 Slip Ring

Slip ring is the electric connection between EDM and main board of total station.Faults of slip ring will mainly cause the failure of power supply to EDM or failure of

data communication.

electronic brush slip ring

(on EDM mainboard)

Figure 3.61

Figure 3.62 legs connected to slip ring

1

2

1

(Power Leg)Volt.6.0V

Caution: Make sure that the legs are well connected to the slip ring correspondingly,

neither open circuit nor short circuit.

CLOCK

GND

DATA

POWER



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Inspection

Take off the battery box. Use OHM of multimeter to check if the four leads of slip

ring get short circuit or open circuit. If so, restore them or replace for a good slip ring.

Under Test Mode/State 3/Inside, rotate the EDM, if the value of SIG changes

between normal value and 0 at times, then it indicates there is some problem with the

slip ring.



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4. CALIBRATIONS

4.1 Plate Vial


1. Rotate instrument, make plate level parallel with line between any two leveling

screws, and then adjust leveling screw to make plate bubble centered.

2. Turn the instrument for 90 degrees, adjust the third leveling screw, and make the

plate bubble centered.

3. Repeat the steps 1 and 2, make the plate bubble centered in above two positions.

3. Rotate instrument around vertical axis with a 180.

5. If the plate bubble still be centered (or its offset is less than 1/3 of a grid), plate

bubble is upright to vertical axis.

Adjusting Steps:

1. Adjust leveling screws, make plate bubble centered;

2. Rotate instrument with a 180, watch the offset of plate level;

3. Tweak adjustment screws with correction pin, make plate bubble to move half of

the offset back;

3. Rotate the instrument with a 180, check adjustment result;

5. Repeat the steps above until the plate level is centered.

4.2 Circular Vial


After examining the plate bubble, circular bubble should be centered too (or not

beyond the reticle circularity), which indicates the circular bubble is vertical to

vertical axis.

Adjusting Steps:

1. Adjust circular bubble after plate bubble is centered.

2. Loosen the screw (one or two) opposite with bubble deflective direction;

3. Tweak tightly the screw on the direction accordant deflective until circular bubble

is centered;

3. Adjust three adjustment screws for several times until circular bubble is centered;

5. The force power fixing three adjustment screws must be consistent when circular

level is centered at last.



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4.3 Plumb Line

Perpendicularity of vertical axis means Perpendicularity of vertical line of reticle to

horizontal axis. It requests no visible error.


1. Make horizontal line of reticle aiming at one arbitrary value on vertical line of

graduation of collimator;

2. Tighten and fix the vertical tangent screw.

3. Rotate horizontal tangent screw (fine adjust) to move the reticle horizontally.

3. If the offset from horizontal line on reticle to graduation line is within 3, the

reticle is not declining.

Adjusting Steps:

1. Loosen two screws among three ones which fix the base of reticle board;

2. Knock the base of reticle board with a tool to make plumb line accord with

standard;

3. Tighten screws, and then drop varnish on them.

4.4 2C (Perpendicularity between Sight Line and Horizontal Axis)

Inspection Steps and Criterion:1. Level the instrument.2. Sight the far crosshairs of telescope at a certain graduation (for example, +10,

shown as figure 4.11) of the vertical scale in the horizontal collimator. And press

0set, and then press Enter.

3. Reverse the telescope and sight at the same graduation (shown as figure 4.12),and note down the horizontal angle value, which should be within 8 difference

from 180.




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Adjusting Steps:

Take off the reticle cover, and adjust the left and right screw properly.

For example, if the horizontal angle value on the reversed position is 180 00'40" (in

which 40" is just the difference).

4. Adjust the horizontal clamp and tangent screw to make the horizontal angle valueto half of the difference as 18000'20".

5. Then sight at the horizontal collimator, and see how much the deviation is fromthe graduation (+10).

6. Next we take off the reticle cover on the eyepiece and adjust the left and rightadjusting screws to make the vertical reticle back to the graduation.

Notice: Dont adjust the screws beyond 1, or it will affect the beams alignment. There

are far and near crosshairs in telescope. Sight the far crosshairs of telescope through

rotating counter clockwise direction near to the end.

4.5 High-low Difference

(Perpendicularity between Horizontal Axis and Vertical Axis)


1. On the first position (main board side is on your left when sighting), sight

crosshairs at a certain graduation (for example, +10) in horizontal collimator.

2. Sight in the lower collimator, note down the corresponding grid value A on the

horizontal crosshairs.


3. On the second position (main board is on your right when sighting), do as the same

with above two procedures, and note down the other corresponding grid value B.



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4. The difference between A and B, |A-B|, is just the high-low difference value, which

should be less than 9 (0.3 grid on the scale).

(Note: on the scale of reticle, 1 grid=30)

Adjusting Steps:

1. Take off the center cover below EDM.

2. Adjust the left or right screw under center cover to move crosshairs to the position

of (A+B)/2.

If the above procedure is not satisfactory, we have to disassemble the main body and

scratch the side which is higher than the other.

Notice: After high-low difference, please repeat plate vial calibration.

4.6 Adjustment of Compensators

Collimator

A

B C

Caution: Enter the compensator mode, if the F value showed on the screen is

fluctuating or it exceeds 10000, and cant be adjusted, which means the compensator

is broken. We have to replace for a good one.

Vertical Compensator of Series300/600 and Theodolite

Figure 4.61 Leveling Screws A, B, C



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1. Level the instrument.

2. Enter the compensator mode. For theodolite: F2+Power, F1 five times, F3 five

times; For Series 300, press F2+POWER to turn on, then press F1 five times and F3five times to enter the compensator mode; For Series 600, Power ParaSystemF2.

3. Frequency value of compensator is showed on the first row, and this F

value should be within the range of60.

Figure 4.62 F value of the theodolite

Rectifying the F value:

a. Take the battery back cover off the instrument;

b. Tap two sides of compensator with a small hammer to make F value within60 in.

three relative position:0, 90, 180.

If the above value can not be rectified, we have to calculate and input coefficient of

compensator.

How to calculate coefficient of the vertical compensator

1. Level the instrument.

2. Enter the compensator mode.

3. Aim the instrument at the reticle center ofthe collimator.

3. Adjust the leveling hand wheel A which is

close to the collimator to make the

instrument go up 5 grids (6 grids for 600

series) on the reticle. At this moment, note

down the F value (F1).

5. In the same way, we adjust the instrument

5 grids (6 grids for 600 series) down from

the reticle center, and note down the F valueF2.

Figure 4.63 Up 5 grids



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6. Then we can calculate out the coefficient

as: K=|F1|+|F2|/300 (K=|F1|+|F2|/360

for 600 series).

7. Press ENTER, and input the K value

(VADJK). After that, press ENTER tosave and quit. The coefficient of

compensator is well set.

Checking the accuracy of the coefficient

1. Enter the angle measurement mode.

2. Aim the instrument at reticle center of the collimator, note down the Vertical angle

value A0.

3. By adjusting the leveling hand wheel, we make the instrument up 6 grids, note

down the Vertical angle value A1.

3. In the same way, we adjust the instrument 6 grids down from the reticle center and

note down the angle value this time A2.

5.Compare the value A1 and A0, in the second unit(), the difference should be less

than about 6. So it is with A2 (in the second() unit, the difference between A0

and A2 should be less than about 6).

6. If A1 and A2 are not up to requirement, repeat the steps above.

Setting Coefficient of Horizontal Compensator (only for 600 Series)

1. Level the instrument precisely in all directions. Do the Vertical Index adjustment.

Then go to the compensator mode (SET PARASystemHADJ) and adjust the

compensator value within the range of 60 (take the battery back cover off the

instrument and tap two sides of the compensator). Initially, we input the coefficient

as 3.00(press OK and input 3.00 that is HADJK), and keep the temperature coefficient

as 0.20(the lower row, that is, HADJA). Note down the value 0 at Y of the horizontal

angle in the electronic bubble mode (basic interface, F2F6F5). Quit to Angle

Measuring.

2. Sight the instrument at a certain graduation (10, for example) on horizontal line of

the scale line in the upper collimator, then 0set the horizontal angle. After that, sight

the instrument in the lower collimator and remember the corresponding position F on

the horizontal scale line.

3.Enter the electronic bubble mode (basic interface, F2F6F5), turn the screw B

and C to make instrument tilt left-side until the value at Y of the electronic bubble

screen reaches +1'30".

3. Rotate the telescope and turn the horizontal tangent screw, and sight at the same

Figure 4.64 Down 5 grids



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graduation E on the horizontal scale line in the upper collimator. Fix the horizontal

tangent screw. Then sight the telescope at the horizontal scale line in the lower

collimator. Set the horizontal angle zero by pressing Oset. Next sight the instrument

at position F on the scale line in the lower collimator. Here, note down the horizontal

angle H

on the screen.

Then, we can calculate the compensator's coefficient as follows:

K1= 3(1'30"-0)0.577/H 0< H


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in horizontal collimator, and note down the vertical angle value A1;

2. Reverse the instrument and sight it at the same position, note down the angle value

A2;

3. |A1+A2-360| is just the I angle error, which should be less than 6.

Figure 4.71

Adjusting steps:

1. Go to the item V ANGLE 0 POINT .For Series 300, Press F1 + Power, and then

F1; for 600 Series, PowerADJV ANGLE 0 POINT;

2. On first position (main board side is on your left when sighting), aim at a certain

graduation (10, for example) on the vertical crosshairs of the scale in horizontal

collimator, and press Enter;

3. Reverse the instrument to second position (main board side is on your right when

sighting), and sight at the same graduation, and press ENTER;At this moment, if the I Angle error is too much deviation, ERROR will be

displayed. At this time press keys as follows for force alignment:

Series 300, press F3F2F2;

Series 600, press F1F2F2.

Theodolite, press 0SET+V%+0SET

3. Power off to save the force setting.

4.8 Coarse Collimator


a. Make vertical line on reticle board aim at plummet (can be replaced with arbitrary

plumb line).

b. Rotate focusing hand wheel to see the plummet.

c. If perpendicular bisector of on the coarse collimator superposes with plumb

line, there is no offset on coarse collimator.

Adjusting Steps:

a. Adjust two screws on coarse collimator.

b. If offset is big, loosen two screws, wrest coarse collimator.



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c. If offset is not big, loosen a screw, knob coarse collimator with relevant tool.

4.9 Optical Plummet

Inspection Steps and Criterion

1. Set the instrument on a tripod and place a piece of white paper with two

perpendicular lines on the ground.

2. Adjust the focus of the optical plummet and move the paper so that the intersection

point of the lines on the paper comes to the center of the field of view.

3. Adjust the leveling screws so that the center mark of the optical plummet coincides

with the intersection of the cross on the paper.

3. Rotate the instrument around the vertical axis and at every 90 observe whether the

center mark position coincides with the intersection of the cross.

5. If the center mark always coincides with intersection, it is not necessary to adjust.

Figure 4.91

Adjusting Steps

1. Adjust the leveling screws to coincide the center mark with the intersection on the

paper;

2. Rotate alidade with a 180, check the offset;

3. Take optical plummet eyepiece cover off, adjust the four screws upper and above,

left-and-right with 1/2 offset (adjust two screws upper and above if leaning up and

down, while adjust other two screws left-and-right if leaning left and right );

3. Repeat steps 13, unt i l the center mark coincides with the intersection on the

paper.

If offset is big, adjust with screw 1, 2 which is shown in figure 3.92.



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Figure 4.11

Method two:

1. Paste a piece of paper with reticle on the wall which is 5 m from telescope.2. Rotate image screw and focus screw to shot at reticle on the wall clearly.3. Turn on electronic theodolite and shot at reticle on the wall.4. Rotate image screw until red point become smallest observed by the other people

near the wall. If the size of laser point becomes big when turning image screw

clockwise, you should change a thicker metal sheet. If the size of laser point

becomes small when turning image screw counter-clockwise, you should change a

thinner metal sheet.

5. When the diameter of red point is around 1mm and reticle on the wall is seenclearly through telescope of electronic theodolite at the same time, adjusting the

size of laser point finishes.

How to move the laser point to the center of crosshairs of electronic theodolite?

Coarse adjustment:

Loosen two crews 1 to move the red point near the crosshairs, and then tighten and

drop some varnish on them.

Fine adjustment:

Adjust four screws 2 to move the red point to the center of the crosshairs.

2

Figure 4.12

2

1

1

2

2

metal sheet

image screwfocus screw



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6. SOFTWARE DOWNLOADING

Series 300 with infrared

1. Connect the total station and PCwith data communication cable;

2. Take off the right cover (the side of

main board);

3. Plug off the jumper on the main

board and insert it into the upper

two-pin socket;

4. Double click the software, andchoose a corresponding com port

according to your computer;

5. Turn on the instrument and the

screen will display Please wait;

6. Press PROGRAM on the software,

and programming starts;

7. After programming finishes, andthan power off.

8. Restore the jumper to its initial

place.

Note:

Just insert the jumper back into one foot of the pin socket, because this pin socket is

used to write program to chip for hardware engineers.

Series 600

1. Connect total station to computer with data communication cable.2. Double click the software, and choose a corresponding com port according to your

computer.

3. Press F1 while powering on the instrument.4. Press F4 in time. The display will show Please wait5. Press PROGRAM on the software, and programming starts.6. Programming finished, plug off the battery.If fail to download software from PC, please check data communication cable orreplace mainboard.

Figure 6.1 Plug off the jumper

Figure 6.2 Insert the jumper

The jumper



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7. COMMON PROBLEMS

7.1 Common Problems in Angle Measure

ET and 300 SeriesError 01

Solutions:

1. Mechanism Discharging screw of vertical axis (tweak tightly)

2. Circuit: 1) Horizontal analog (adjust again, if not ok, replace it)

2) Main board has problem (replace it)

Error 02 telescope is rotated too fastprotective error

Error 03 telescope is rotated too fastprotective error

Solution:

Rotate slowly

Error 04: Vertical Analog 1the lower analog

Error 07: Vertical Analog 2the upper analog

Error 05: Horizontal Analog 1the one with short wires

Error 06: Horizontal Analog 2the one with long wires

Solutions:

1. The diameter of LISHARING figure is beyond 1.0~2.5V. Adjust the figure to thenormal range.

2. The tolerance between the two raster disks exceeds 0.02mm

1) On the vertical rasters, loosen the four big screws, and adjust the four small screws

to make the tolerance between two rasters within the range of 0.02mm (using the

0.02mm tape to decide the tolerance).

2) Or you may adjust the peak-to-peak value within 1.3~2.0V.

3. SignalLisharing and the peak-peak value is suddenly strong and suddenly weak.

The rasters are unglued or the instrument gets crashed. Return the instrument to

factory.

4. The analog is damaged. Replace for a good one.

5. Main board has got problem. Replace for a good main board.

Error 08

Solutions:

1. Adjust the diameter of the Lisharing figure.

2. Adjust the zero-point voltage, because zero-point voltage is too high.

3. Main board is damaged, replace for a good one.



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Additional Errors for Theodolite:

Error20

Solution:

I angle is not well set. Press 0SET+V%+0SET to make a force setting.

Error21

Solution:

Check the compensator.

600 Series

Error 04vertical CCD sensorthe lower CCD

Error 07: vertical CCD sensorthe upper CCD

Error 05: horizontal CCD sensorthe one with short wires

Error 06: horizontal CCD sensorthe one with long wires

Solutions:

1Adjust the CCD signal.

2Encoder disk is dirty, clean it.

3The glass surface of CCD is dirty, clean it. Or CCD is damaged, replace it.

4Light leaks through main board cover. Keep the CCD away from light.

5The main board has got problem. Replace for a good one.

The signal of vertical disk or horizontal disk is unstable.

Solutions:

1. Clean the encoder disk.

2. Clean the CCD glass surface.

7.2 Common Problems in Peripheral Equipment

1. Booting up problemsa. The voltage of battery is beyond 5.5~7.5V;

b. Bad welding of the wires or joints on battery cover;

c. Drive circuit is damaged; The connecting cable of display isnt well connected;

d. The program in charge of display is damaged, replace the main board.

2. Repairing displayboard

Two displays are connected to each other. Connect only one display with main board

every time to see if it is ok. The solution is to replace the broken display board.



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3. Problems in buzzer

If the sound volume is too low or no sound from buzzer, please change buzzer on the

left cover.

4. Problems in communication port

Please Examine:

a. cable pins of communication port and judge if the connection is cut;b. if connection between cable pins and data receptacle on main board is correct;c. if baud rate is correct.If it is still not good, it is necessary to change main board.

7.3 Common Problems in EDM

1. Error 31

Fault inspection and repairing flow chart:

Power on and hear if there is sound from motor.



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Method to check fiber and emitting tube: take off the fixing screws of the emitting

tube to examine if there is emitting light. There is emitting light when fiber is broken.

If not, emitting tube is broken.

Method to check emitting board: examine the voltages of two leads of emitting board

(P15).

Power leg

(P21

yes no

Signals on

emittin board

Replace the

board

Correct motors

polarity

no yesSlip ring

no

Replace

it

yes

Electronic

brush

no

Replace it

Change main

board

Power on

Sound

from motor

yes

no

end

es

start

Figure 7.31



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Power on

Sound from

motor

no

Facula under

test mode

yes no

High voltage

end

CZ5,6,

8 P16

yes

no

Change that board

no

yes

Adjust voltageholding screws

Replace for a proper

light-reducing sheet

CZ10 (P16)

Change receiving board

CZ9 (P16)

Change emitting board

no

yes

yes

no

Fiber

Replace for it

Emitting

tube

Replace for it

Emitting

board

Replace for it

no

yes

yes

yes

no

no

yes

Figure 7.32

start



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Some inspection methods to Error31:

At the moment of powering on instrument, listen if there is sound from motor in EDM

(and sound from motor of light-path transition system).

If no sound, add a DC 3V to motor to see if it has been broken. If motors are good,

test followings:

1) Inspect the Power leg on emitting board to connect with slip ring partunder

distance measuring stateto see if it is about 6.0V.

2) Check if slip ring is in shorted circuit, or weak welded. Check the connection with

main board and relevant ports.

4) Turn the instrument on, under distance measurement state, look into objective lens,

to see if there is red facula, if not, try to rotate motor of light-path transition system. If

still no facula, it needs to check emitting fiber or emitting board.

5) Inspect whether emitting fiber is broken.

6) Test voltage of the ports on emitting board. If above are ok, we need to inspect

intermediate frequency board to find error points. See below:

a) Use a multimeter to test the voltage of CZ9 point, the voltage is the output voltage

of emitting board. The value should be 2.5V (300series) or 1.6V

(400,500,600series), if not, there is problem with emitting board.

b) Use a multimeter to test the voltage of CZ10 point, the point is the testing point of

receiving board. The value should be around 3.9v, if not, inspect small board and

receiving fiber.

c) If above points are ok please inspect the hi-voltage of CZ4 point. The value

should be lower than the recommended voltage for 10~15V (please find the

recommended voltage on the back of EDM cover).

If the hi-voltage is out of the normal range, we need to adjust it as below:

If there is no big difference between testing voltage and recommended voltage, we

can adjust hi-voltage controlling screw.

Turn on the instrument, enter adjustment state, enter state 3.for 300, to change light

path, press F1. To change measuring tape, press F4.0, 1 are low frequency, 3 is high

frequency, for 400/500/600, see manuals.In adjustment state 3, under inside light path, low frequency state, loosen the

fixing screw, then adjust hi-voltage control screw.:

When inside light path signal become lesser, restart the total station, enter test mode

again. Now high-voltage controlling value and high voltage value will be larger.

When inside light path signal become larger, restart the total station, enter test mode

again. Now high-control value and high voltage value will be lower.

(High-voltage control screw can be turned in 2 rounds, if hi-voltage can not be well

adjusted by this screw, it needs to change light-reducing piece in inside light path).

To change light-reducing piece:

a. Take zero-fixing board down, turn inside light path out, take off its light-reducing



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piece

b. Change for a suitable light-reducing piece, paste on with varnish, fix zero-fixing

board on the bracket. Turn on the total station, check the high-voltage. If still not ok,

repeat the adjustment steps of high-voltage.

(When high-voltage is lower than recommended voltage, use a darker light-reducing

piece; when high-voltage is higher than suggested voltage, use a lighter light-reducing

piece.)

7) After fixing above, if the problem still appears, the middle-frequency board should

be changed.

8)If above are ok, we enter Adjustment State 2 to check Optical Coupling board.

9)Checking Optical Coupling Wave.

Set oscilloscope to be 0.1V state, place probe on the middle point on the opticalcoupling board to watch signal of this point (meanwhile rotating the light reducing

motor gear).

Gear value Checking: Under adjustment state 2, put a prism onto Objective lens, the

correct gear value should be about 11.

If there is big error, adjust it as below:

Loosen 2 fixing screws, move the optical coupling board upward or downward, make

the Gear value be correct.

10) When above is ok, enter adjustment state 3. Check the CZ5 point on intermediate

frequency board. In inside light path, set oscilloscope to be 0.1V state, 10db

attenuation, put probe on CZ5. Observe the signal. Under low frequency, the signal

should be 2.2~2.7V. Under high frequency, the signal should be 1.6~2.5V.

Middle-frequency signals should be sine wave.

11) Optical and electronic crosstalk: Under outside light path, set oscilloscope to be

5mV, 10db attenuation, and place probe on the CZ6 point. Under low frequency,

Vp-p


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prism. If signals voltage change, it needs to adjust high-voltage controlling screw. If

no changes, it is good.

After fixing all of screws, then check again high-voltage, high-voltage control,

intermediate frequency signals.

2. Failures of distance measuring

a. long distance measuring failure:

Solution: Adjust the beam alignment.

b. short distance measuring failure;

Solution: Adjust the optical coupler.

c. both of long distance and short distance measuring failure

Solution: check slip ring (whether get short circuit or open circuit); optical fibers

(whether get broken); intermediate frequency board (signals); emitting board (check

signals); inside path (check whether it gets stuck).

3. Exaggerated reading

Without rotating EDM (telescope), reading is correct; while EDM (telescope) being

rotated, exaggerated reading occurs, it is the problem with slip ring;

Without rotating EDM, exaggerated reading appea rs, then something wrong with

intermediate frequency board, receiving board or EDM main board.

Prism system gets dirty or moldy, clean it or change it. After being re-assembled,

we have to readjust all the calibrations.

4. Repairing on faulty reading of distance measuring

If the faulty reading is a fixed value, then readjust the instrument constant;

If the faulty reading is flexible, then check the three boards on EDM (emitting

board, intermediate frequency board, receiving board);

In coordinate measurement, if there is error reading in Z coordinate, the problem is

probably with the software, rewrite or update the software.

5. High-voltage broken down (hi-volt. much higher than recommended value)

a. Receiving fiber is broken

Solution: Replace for a good one;

b. Inside light path doesnt move, it is locked tightly, or the inside path is dirtySolution: check the inside path and clear the resistance

c. Motor driving circuit problem, or bad welding on the emitting board

Solution: Replace emitting board

6. Inside path signal changes

a. Receiving optical fiber is broken:

Solution: replace receiving fiber

b. High-voltage controlling transformer is broken

Solution: replace intermediate-frequency board

c. something wrong with capacitance receiving board



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Solution: Replace the receiving board

7. There is obvious difference between high frequency and low frequency of light

path signal

a. phase-locking fails

Solution: replace the emitting board

b. Frequency-mixing circuit problem

Solution: replace emitting board

8. Inside light path signal is zero, hi-voltage is higher than normal

There is problem with 2.2N capacitance on receiving board

Solution: replace receiving board

9. Instrument measures automatically (without prism)

There is problem with measurement stopping systemSolution: change intermediate frequency board

10. Unstable reading of distance measuring results

a. High-voltage is too high:

Solution: adjust high-voltage over again.

b. Voltage of CZ9 port on intermediate frequency board is wrong

Solution: change intermediate frequency board

c. The frequency of main oscillation is wrong

Solution: replace the emitting board

11. Inside path signal is zero, and the voltage of high-voltage controlling is 0

Communication between EDM and main board is bad.

Slip ring fault: short circuit or open circuit

Solution: replace slip ring

12. High-voltage too high, and inside path signal 4.9V, distance measuring fails

Initiative response of high-voltage is too slow, and high-voltage controlling

transformer is bad.

Solution: replace intermediate-frequency board

7.4 Common Problems in Axis

Please refer to Axis Blocking part.



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8. TOOLS & CHEMICALS

Oscilloscope CSY-2 Box Multimeter

Grinding Sticks (H.&V.)

Bats

Light reducing sheet

Allen Key

TweezersScrewdriversExtender

Tape of 0.02mm

Collimator

old and new model

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