OP-200

Instrumentarium Dental OP-200 Troubleshooting manual

Orthopantomograph

Orthoceph

Troubleshooting Manual

OC200 & OC200 D

OP200 & OP200 D

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

200214 rev 3

D500211, 3

Approved

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

Orthopantomograph® and Orthoceph® are registered trademarks of Instrumentarium Dental. U.S. patents 4,641,336; 5,016,264; 5,425,065, 5,444,754, 6,731,717 and 6,829,326. German patent 4,344,745. Finnish patents 112594 and 114383. Windows trademark of Microsoft Corporation in the United States of America and other countries. Pentium of Intel Corporation. Iomega

Jaz® is a registered trademark of

Iomega Corp. Documentation, trademark and the software are copyrighted

with all rights reserved. Under the copyright laws the documentation may not be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine readable form in whole or part, without the prior written permission of Instrumentarium Dental .

is a registered trademark

The original language of this manual is English. Instrumentarium Dental reserves the right to make changes in

specification and features shown herein, or discontinue the product described at any time without notice or obligation. Contact your Instrumentarium Dent al repr esent ativ e fo r the most current information.

Manufactured by Instrumentarium Dental

Nahkelantie 160 (P.O. Box 20) FI-04300 Tuusula FINLAND Tel. +358 45 7882 2000 Fax. +358 9 851 4048

For service, contact your local distributor.

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

Table of Contents

1 General trouble shooting............................................................................................1

1.1 OP200 Does not operate at all..............................................................................1

1.2 No exposure, no error message, but movements ok............................................1

1.3 Exposure ok, but no movements...........................................................................2

1.4 OP200 Malfunctions, but no error message..........................................................3

1.5 Positioning lights do not operate...........................................................................3

1.6 Cephalostat programs cannot be selected............................................................4

1.7 DAP reading in Control panel is incorrect.............................................................4

1.8 Ceph lateral program can’t be selected................................................................4

1.9 Automatic collimator not detected (digital unit) ....................................................5

1.10 Problem with film image quality.............................................................................5

1.11 Problems with digital image quality.......................................................................7

1.11.1 Image is grainy or noisy.............................................................................7

1.11.2 Image is striped..........................................................................................8

1.11.3 Image is too dark / light..............................................................................9

2 Electric trouble shooting..........................................................................................11

2.1 Microswitches and position indicators.................................................................11

2.2 General, failure messages..................................................................................1 1

2.3 Film unit failure messages ..................................................................................14

2.3.1 Ch 1 CAS.................................................................................................14

2.3.2 Ch 2 CAS (film unit).................................................................................16

2.3.3 Ch 3 COL (film unit) ..............................................................................19

2.3.4 Ch 4 COL..............................................................................................22

2.3.5 Sy 25 AEC..............................................................................................24

2.3.6 Sy 28 PoC..............................................................................................25

2.3.6.1 Cassette movement, principle.................................... .... ...........26

2.3.7 Sy 30 PoH..............................................................................................27

2.3.7.1 Rack movement, principle.........................................................29

2.4 Digital unit failure messages...............................................................................29

2.4.1 Ch 1 PC....................................................................................................29

2.4.1.1 Fiber test....................................................................................32

2.4.2 Ch 2 PAc (digital unit) ..................... .... ..... ..... ............................ .... ..... ......33

2.4.3 Ch 2 CEc (digital unit)..............................................................................33

2.4.4 Ch 3 COL (digi).....................................................................................35

2.4.5 Ch 15 bPL................................................................................................37

2.4.6 Ch 17 HSP...............................................................................................38

2.4.7 Sy 25 AEC (digital unit)..........................................................................38

2.4.8 Sy 28 CCd................................................................................................40

2.4.8.1 AEC Frequency generation, block diagram......................... ..... .44

2.4.9 Sy 30 PoC................................................................................................45

2.4.10 Sy 38 COL................................................................................................47

2.4.11 Sy 32 PoA................................................................................................49

2.5 Digital image chain trouble shooting...................................................................52

2.6 Digital image faults ..............................................................................................55

2.6.1 Detector fail..............................................................................................55

2.6.2 Data bits missing.................................................... ..... .... .........................56

2.6.3 PC............................................................................................................58

200214 rev 3 Instrumentarium Dental i

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

2.6.4 Poor beam alignment............................................. ............................ ..... .61

2.7 Common errors...................................................................................................63

2.7.1 Ch 5 *** .................................................................................................63

2.7.2 Ch 6 POS...............................................................................................63

2.7.3 Ch 7 *** .................................................................................................66

2.7.4 Ch 8 PSE ..............................................................................................67

2.7.5 Ch 9 rEo................................................................................................68

2.7.6 Ch 11 PAr.................................................................................................69

2.7.7 Ch 12 dCC ...............................................................................................70

2.7.8 Ch 16 StP.................................................................................................71

2.7.9 Sy 20 ***...................................................................................................71

2.7.10 Sy 21 HHo................................................................................................73

2.7.11 Sy 22 Arc..................................................................................................74

2.7.12 Sy 23 Inu..................................................................................................76

2.7.13 Sy 24 FIL..................................................................................................77

2.7.14 Sy 26 EEP................................................................................................78

2.7.15 Sy 27 Por .................................................................................................78

2.7.15.1 Rotation movement, principle...................................................80

2.7.16 Sy 29 PoL.................................................................................................82

2.7.16.1Linear movement, principle........................................................83

2.7.17 Sy 31 PoU................................................................................................84

2.7.17.1Carriage movement, principle....................................................85

2.7.18 Er 40 Core Module...................................................................................86

2.7.19 Er 41 Core Module...................................................................................87

2.7.20 Er 42 Core Module...................................................................................88

2.7.21 Er 43 *** ...................................................................................................88

2.7.21.1Filament Control Board self check principle..............................89

2.7.22 Er 44 FIL ..................................................................................................90

2.7.23 Er 45 InP..................................................................................................9 1

2.7.24 Er 46 PAy.................................................................................................93

2.8 Indicators and test points....................................................................................93

2.8.1 Led-indicators...........................................................................................93

2.8.2 Test points................................................................................................94

3 Appendix A: Optical Link Test..................................................................................95

3.1 PCI board driver check........................................................................................96

3.2 PCI board, PAN-AEC Term inal bo ard an d Ceph Term inal bo ard l eds status che ck 96

3.2.1 Standard PCI board.................................................................................96

3.2.2 Low profile PCI board

(combined supply voltage led) .................................................................97

3.2.3 PCI board (60187) leds status check.......................................................97

3.2.4 PAN AEC Terminal board (60247) leds status check..............................97

3.2.5 Ceph t erminal board (60191) leds status check

(optional)..................................................................................................98

3.3 PCI Board Fiber Test ..........................................................................................98

3.4 PAN AEC Terminal Board (60247) Fiber Test..................................................100

3.5 Ceph Terminal Board (60191) optical loop test (optional).................................102

ii Instrumentarium Dental 200214 rev 3

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

1 General trouble shooting

Trouble shooting guides listed in this manual are for solving imaging problems. In case there is no solution found, contact the technical customer service of the manufacturer.

Parts are identified in the wiring diagram with letter(s) followed by number eg. cable or capacitor (C), coil/inductor (L), fuse (F), lamp (LA), motor (M ), switch (S), coile d cable (SC), and connector (X).

1.1 OP200 Does not operate at all

Possible causes: Check that:

1 General trouble shooting

No power or OP200 is not receiving power.

Power switch turned off.

Wrong mains voltage setting.

Problem with secondary voltages.

Emergency stop switch is pressed.

Site’s circuit breakers are ok Mains cables are connected inside the

OP200 and the unit is properly connected to the mains voltage.

Mains fuses are ok and have the correct rating.

The power on/off switch is at I position. Green indicator under the carriage should be lit.

OP200 mains voltage setting on the Power Supply Board matches the power line.

Fuses of secondary voltages are ok and that individual circuit boards are receiving the power (green LED’s).

Make sure the problem, why the switch was pressed, is solved before relea sing the switch and turning the unit on.

1.2 No exposure, no error message, but movements ok

Possible causes: Check

Remote exposure button does not operate.

200214 rev 3 Instrumentarium Dental 1

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

Signal EXPSW switch and its wiring. Use Sr 74 IOC.

Approved

D500211, 3

1 General trouble shooting

Possible causes: Check

Panel exposure button does not operate.

Unit is used in Test mode.

Signal PNLEXPSW switch and its wiring. Use Sr 74 IOC.

The exposure mode selecti on in the control panel. Select A or M instead.

Installation. The I/O board jumper X11. Set X11

jumper to OFF or turn S2 to OFF. Exhibition mode is set when exposure lights are on but no buzzer is heard during the exposure.

Problem with Core Module signal

The generator and exposure

signals. Replace boards if needed. PREHREL. Sometimes this error does not generate an error message.

Problem with Inverter Board signals KVREF or KVFB. Sometimes

KVREF signal line broken or KVFB

D10 shorted. Replace Inverter

Board. this error does not generate an error message.

1.3 Exposure ok, but no movements

Possible causes: Remedy:

Unit is in the user programming mode.

Unit is in the service programming mode.

Film unit is in cephalostat mode.

Exit from the user programming mode to the normal operating mode by pressing and holding OK button for three seconds.

Exit from the service programming mode to the normal operating mode by pressing and holding OK button for three seconds.

Tests. Normal operat ion.

2 Instrumentarium Dental 200214 rev 3

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

1 General trouble shooting

1.4 OP200 Malfunctions, but no error message

Possible causes: Remedy:

Problem with Core Module memory contents.

Set Pr 53 nor to on. If this does not help, replace the Core Module.

1.5 Positioning lights do not operate

Possible causes: Remedy:

Collimator in CEPH or QA position. No ligh ts

Collimator in TOMO position. Only TOMO laser lights operate.

Problem with lights and their wiring.

Problem with pos.panel connectors or lights key(s).

Select the PAN collimator.

Check the 12 VAC power line wiring, Interface Boar d and X19 signals.

Check the panel keys and wiring. Check both side panels. In CEPH mode check the collimator po sition - if CEPH make sure that ear holders are in lateral position.

NOTE! See patient positioning instructions in OP200 User Manual.

200214 rev 3 Instrumentarium Dental 3

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

1 General trouble shooting

1.6 Cephalostat programs cannot be selected

Possible causes: Remedy:

Collimator in wrong position. Check the position. Cephalostat slot is not

detected.

Check the jumper position on I/O board.

Note! If ceph side selection jumper is not installed, the collimator apertures in Sr 82 COL service progra m are no t able to be determined (film unit).

Cephalostat collimator is not

Check collimator position.

ready.

1.7 DAP reading in Control panel is incorrect

Possible causes: Remedy:

Either radiation ra te con sta nt is not set or collimator aperture settings undefined.

Check collimator aperture settings and radiation rate constant in Sr 82 COL and S r 78 THA service programs.

1.8 Ceph lateral program can’t be selected

Possible causes: Remedy:

Core Module doesn’t sense LAT/PA switch changes.

Overexposed image at the end of CEPH LAT program.

Check Ceph LAT-switch function. Check Ceph main cable in Digital unit.

Check that Ceph LAT-switch senses LAT position - if not there isn’t soft-tissue compensation in Ceph LAT image.

Check that nasion potentiometer frequency (caecfrq) is detected by Core Module

4 Instrumentarium Dental 200214 rev 3

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

1 General trouble shooting

1.9 Automatic collimator not detected (digital unit)

Check detected collimator type by entering service program "Sr 82 COL". If automatic collimator is detected, text "Auto" along with collimator position information is displayed. Otherwise, if manu al collimator i s detected, text "Std" is displayed.

Possible causes: Remedy:

Cable or connector fault.

Check that pins 5 and 10 are shorted on connector X114 on C76 (autocollimator cable).

Embedded SW version too old.

Check that the unit SW revision is R2.5 or newer. Update if necessary.

1.10 Problem with film image quality

Possible causes: Remedy:

Problem with patient positioning

Technique fact ors not correct or not optimal for film-screen combination.

See OP200 User Manuals for detail s.

Check that image density is ok for AEC and manual modes.

Check that constant contrast value (GCO) is set optimum for film-screen used. Lower value increases contrast.

Problem with beam alignment

200214 rev 3 Instrumentarium Dental 5

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

Check the AEC offset for each program and density settings.

Check that the preprogrammed exposure values match to the needs and preferences of the customer.

Check that a newly taken Quality Assurance film compares to the customer’s QA reference film.

Verify that OP200 panoramic beam alignment is ok.

Verify that OC200 cephalometric beam alignment is ok.

D500211, 3

Approved

1 General trouble shooting

Possible causes: Remedy:

Problem with cephalostat

Check that OC200 cephalostat head assembly is lo c k e d .

Verify that OC200 ear holder adjustment is ok.

Soft tissue not clear in ceph image

Check that the nasion support value mathces with the soft tissue filter value.

Dark room Check that dark room is light tight.

Check that proper safelight (red color) and bulb max. 15W are used.

Check that the green lights of OP200 are not fogging the film being loaded, if OP200 and film processor are in the same room.

X-ray film Verify that film is processed

immediately after exposure. Check that films are stored in a cool

dry dark place in vertical position. Opened film packages are light tight. Film lot is not expired. Older lot should be used first.

Film processor Check that processing chemicals

strength and temperature are ok. Check that processor chemicals are

changed frequently. Check that processor operation lights

are not fogging the film. Check that processor is maintained

according to the manufacturer’s recommendation.

6 Instrumentarium Dental 200214 rev 3

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

1 General trouble shooting

Possible causes: Remedy:

Film Cassettes Check that cassettes are light tight

and do not have dents. Verify that intensifying screens are

clean and without scratches. Check that cassette has been

mounted with fl at side to wards the xray tube.

Check that panoramic cassette lid does not have lead sheet inside it.

Verify that intensifying screens and film used match to each other. Please consult the dealer for details.

1.11 Problems with digital image quality

High quality images with sharp contrast and good detail present optimum diagnostic information. Images with less quality are usually the result of one or more common problems, which are described here.

Possible causes: Remedy:

Sharp image layer is not correct

See OP200 / OC200 User Manuals for patient positioning details

Overexposed image at the end of CEPH LAT program

Check that Ceph LAT-switch senses LAT posi tion - if not there isn’t soft-tissue compensation in Ceph LAT image.

1.11.1 Image is grainy or noisy

Possible causes: Remedy:

Not enough dose to achieve diagnostic image i.e. x-ray beam not correctly positione d compared to the camera

200214 rev 3 Instrumentarium Dental 7

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

Verify that OP200 pan oramic beam alignment is ok. Verify that OC200 cephalometric beam alignment is ok. Check AEC frequency value.

D500211, 3

Approved

1 General trouble shooting

Possible causes: Remedy:

Too low exposure values Increasing PCo / gCo and

density settings decreases image noise. Check the AEC offset and density settings. Check that the preprogrammed exposure values match to the needs and preferences of the customer. Check AEC frequency value.

Broken main cable, Inverter Board or Filament Control Board

Check that darkness of the columns in a newly taken Quality Assurance reference image increases stepwise

1.11.2 Image is striped

Possible causes: Remedy:

Too high exposure values Check that your exposure

settings are reasonable overexposure makes image striped in the areas where is little media on the beam.

Decreasing PCo / gCo and density settings decreases the amount of stripes in image.

Check the AEC offset and density settings.

8 Instrumentarium Dental 200214 rev 3

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

Check that the preprogrammed exposure values match to the needs and preferences of the customer.

D500211, 3

Approved

1 General trouble shooting

1.11.3 Image is too dark / light

Possible causes: Remedy:

Monitor settings are wrong See monitor and Cliniview

user manual for preferred settings Verify that you are usin g min. 24-bit colour. Less colours makes gray scale changes quantized. For detailed decription see Windows and / or graphics board installation manuals.

Cliniview settings are wrong See Cliniview user manual

for preferred and optimized settings

200214 rev 3 Instrumentarium Dental 9

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

1 General trouble shooting

10 Instrumentarium Dental 200214 rev 3

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

2 Electric trouble shooting

The OP200 has many safety functions and features assuring the safe operation of the equipment. In the event of certain user failures or system malfunction the unit does not produce x-rays and a failure code is displayed on the control panel.

2.1 Microswitches and position indicators

There are 15 to 18 microswitches a nd opto sensors in OP200 models to detect the position of the various movements of the equipment. All switches are wired to the I/O Board, and the microprocessor reads the status of the switches every 20 ms. The name of the swit ch is the same as the name of the signal to the microprocessor. Open switch is 5 V, and closed switch is 0 V signal level in I/O Board. Their operation can be checke d by using Servic e Prog ram Sr 74 IOC.

2.2 General, failure messages

In case of malfunction, the unit displays a failure message. Various letters and numbers are disp la yed in the technique factors display positions next to kV, mA and s. Failure code classification is displayed next to kV. A special failure code number is displayed next to mA with alphanumeric information in the s-display.

kV display

Letters in the kV-display indicate the nature of the failure, whether it is caused by user (eg. wrong collimator selected), environment (eg. low line voltage) or protection in the unit (eg. tubehead too hot), or whether there is a serious defect in the unit, which disables the complete operation (eg. program memory error):

200214 rev 3 Instrumentarium Dental 11

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

2 Electric trouble shooting

Ch Check. A failure caused by

the user.

Sy Safety. Temporary

malfunction or protection in the unit, caused by the un it or environment. Operation is prohibited or te rminated to protect the operator, patient and the unit itself. (Eg. the temperature in th e tu be head assembly is too high due to intensive use). After the corrective action or the wait time, the unit can be used.

Er Error. There is a serious

defect in the unit, and the operation is therefore prohibited to protect the operator, patient and the unit itself. (E g. Fa ilu re in the Co re Module).

WARNING! If the unit is further used, FAIL failure may cause malfunctio n.

mA display

The mA-display shows the actual numeric failure code. Each failure code has a unique number, to differ one malfunction from anoth er :

kV Ch Sy Er mA 1 to 19 20 to 39 40 to 50

12 Instrumentarium Dental 200214 rev 3

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

2 Electric trouble shooting

s display

The exposure time display indicates the alphanumeric short form explanation of the malfunction. This reminds the user or the servicema n of what the actual numeric failure code means, or sometimes numeric information of the malfunction, eg. PC for personal computer and COL for collimator.

kV Time display

Ch-failure PC, PAC, CEC, COL, POS, rEL,

PSE, rEo, EAr, PAR, LbL, bPL, StP, HSP or numbers

Sy-failure HHo, ArC, Inu, FIL, AEC, EEP, Por,

CCD, PoL, PoH, PoU, nSY, COL or numbers

Er-failure CPU, FIL, InP

Failure code resetting

Ch failure codes can be reset by correcting the reason for

the failure code (eg. changing collimator po s ition). Ch and Sy failures can be reset by pushing any key in the

control panel (up-down-right-left-OK) or in the patient positioning panel.

Er failures can not be reset. Switch the unit off and on, to test whether the failure was only temporary.

200214 rev 3 Instrumentarium Dental 13

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

2 Electric trouble shooting

2.3 Film unit failure messages

2.3.1 Ch 1 CAS

Problem: “ Ch 1 CAS “ error message is displayed.

Why? Cassette not ready for the exposure in QA

and panoramic progr ams .

How is it detected?

At the beginning of the exposure the state of the PANCASSW signal is read. The indicator for panoramic film cassette, optical sensor (D1), is located inside the cassette holder, behind the cassette carriage. When the cassette is inserted the actuator on the cassette carriage moves the cam away from the optical fork, thus activating the PANCASSW signal. Error occurs when the exposure, other than cephalometric, is initiated and 1) the signal is not active or 2) the signal has not been inactive since the previous exp osure. The exposure is prevented.

To ensure maximal image quality the panoramic cassette can not be placed in it’s holder while aqcuiring cephalostatic image and vice versa.

Possible causes:

Panoramic or tomographic cassette not properly installed or not in place.

Panoramic or tomographic cassette not replaced since the previous exposure.

Trying to aqcuire ceph image while pan cassette installed.

Check or test: Parts related:

Remove the cassette

Cassette and reinsert unexposed one.

- Error should clear.

- If not check the microswitch operation.

Remove pan cassette.

14 Instrumentarium Dental 200214 rev 3

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

2 Electric trouble shooting

Possible causes:

Signal PANCASSW passive in the Core Module.

Check or test: Parts related:

Check the microswitch operation & adjustment: Press the cassette

Cassette

sensor

assembly against the cassette tunnel.

- If the error message clears then problem with the cassette sensor alignment, adjust the microswitch or opto coupler.

- If the error stays then check the wiring.

Check the wiring:

Microswitch

S23

- Check the connectors and wires for open or broken wire. Use the wiring diagram.

or optocoupler,

SC4 or C19,

C18 in CR

units, X114,

C13, X6

- Check the wiring order on microswitch or optocoupler

Test the wiring :

- Use Sr 74 IOC. Press cassette sensor to check that the signal status changes. When signal is active (opto sensor D1 free or microswitch S23 closed), cassette is in the cassette holder. Signal is indica ted by In 0 LED8, lit LED indicates the presence of the cassette. If the signal does not change then use wiring diagram and DVM (digital voltmeter) to find the problem.

200214 rev 3 Instrumentarium Dental 15

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

2 Electric trouble shooting

2.3.2 Ch 2 CAS (film unit)

Problem: “ Ch 2 CAS “ error message is display ed.

Why? Cephalostat cassette not ready with the

program P11 and P12.

How is it detected?

Possible causes:

Cephalostat cassette not properly installed or not in place.

In OC200 models there is an indicator for the cephalometric film cassette. This microswitch (S 34) is located inside the cassette holder. At the beginning of the exposure the state of the CEPHCASSW signal is read. Error occurs when the cephalometric exposure is initiated and 1) the signal is not active or 2) the signal has not been inactive since the previous exposure. The exposure is prevented.

Error occur also if cephalometric cassette is installed and panoramic image acquicition started.

Check or test: Parts related:

Remove the cassette.

Ceph cassette

Reinsert it.

- Error should clear.

- If not check the microswitch operation.

16 Instrumentarium Dental 200214 rev 3

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

2 Electric trouble shooting

Possible causes:

Cephalostat cassette not replaced since the previous exposure.

Check or test: Parts related:

Remove cassette and replace with unexposed

Cassette sensor

one. Check the microswitch

operation & adjustment: Press the cassette against the cassette sensor.

- If the error message clears then problem is with the cassette sensor alignment. Adjust the microswitch.

- If the error stays then check the wiring or adjust the switch.

Ceph cassette installed while PAN exposure

Remove ceph cassette Ceph cassette

200214 rev 3 Instrumentarium Dental 17

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

2 Electric trouble shooting

Possible causes:

Signal CEPHCASSW passive in the Core Module.

Check or test: Parts related:

Check the wiring:

Microswitch S34, CC4,

- Check the connectors and wires for open or broken wire. Use wiring diagram.

X130, CC2, X110 or X121, C13, X8, Core Module

- Check the wiring order on microswitch.

Test the wiring :

- Use Sr 74 IOC. Press the cassette sensor to check if the signal status changes.

- If the signal does not change, then use wiring diagram and DVM to find the problem.

- When switch is closed, cassette is in the cassette holder. Note that the switch is connected normally closed, i.e. the switch is closed when the actuator is released. Signal is indicated by In4 LED5, lit LED indicates the presence of the cassette.

18 Instrumentarium Dental 200214 rev 3

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

2 Electric trouble shooting

2.3.3 Ch 3 COL (film unit)

Problem: “ Ch 3 COL “ error message is displayed. Why? Wrong collimator selected. How is it

detected ?

Error is generated wh en the pano ramic (P1 - P5), or special (P6 -P10) exposure is initiated while the panoramic collimator is not in the panoramic position. Error is also generated when the tomographic (P13 - P14) exposure is initiated while the collimator is not in TOMO position. Signals COL1SW to COL3SW are monitored in the Core Module.

Possible causes:

Collimator not in PAN position when panoramic (Program 1 to

5), TMJ or sinus (Program 6 to 10) selected.

Check or test: Parts

Move the collimator to

Collimator. correct position until it “clicks”.

- Error should clear.

- If not check the microswitch operation.

Collimator not in TOMO position when Program 13 or 14 selected.

200214 rev 3 Instrumentarium Dental 19

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

2 Electric trouble shooting

Possible causes:

Signal COL1SW passive and/or COL2SW active in the Core Module.

Check or test: Parts

Test the microswitch

Collimator. operation: Move the collimator.

- If the error stays then check the wiring and microswitch alignment.

- Remove THA cover. Visually check that the switches trigger according to the code bar and that switch levers move freely.

Check the wiring:

S31, S32,

S33, CC1,

- Check the connectors and wires for open or broken wire. Use wiring diagram.

X113, C13,

X8, Core

Module,

collimator

- Check the wiring order on

code disk microswitch.

- If error happens at OT upgrade, check the collimator code disk, there are two different models, OC200 and TOMO. Refer t o the Table on next page.

Test the wiring : Use Sr 74 IOC and move the coll imator to check that the signal status changes. Follow the Table below.

- If the signals do not change or are not correct then use wiring diagram and/or DVM to find the problem.

Valid OC200 & OC200 OT collimator switch combinations (closed switch is active = +5V). There are two different code bars, one for OC collimators and th e other for Ortho Trans collimators:

20 Instrumentarium Dental 200214 rev 3

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

2 Electric trouble shooting

S 31 COL1S W

S 32 COL2S W

S 33 COL3S W

COLLIMATOR POSITION

closed closed open Quality Assurance

collimator closed open open Panoramic collimator closed

closed

Cephalostat

collimator:

TOMO

collimator: 24 x 30 cm AV or 10 x 12 in AV or

*open open closed closed 18 x 24 cm

*closed

*open

10 x 8 in AH

* TOMO

18 x 24 cm

AV 8 x 10 in AV

24 x 30 cm

AV or

8 x 10 in AV

10 x12 in AV

10 x 8 in AH

open open closed 18 x 24 cm

SV or 8 x 10 in SV

18 x 24 cm

SV or

8 x 10 in SV

open ope n open No valid collimator

200214 rev 3 Instrumentarium Dental 21

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

2 Electric trouble shooting

2.3.4 Ch 4 COL

Problem: “ Ch 4 COL “ error message is displayed.

Why? Wrong collimator selected for ceph

exposure.

How is it detected?

Possible causes:

Collimator not in cephalostat position when program P11 or P12 selected from the control panel.

Error is generated when the cephalometric exposure is initiated while the colli mator is not in one of the cephalostat positions. Signals COL1SW to COL3SW are monitored in the Core Module.

Check or test: Parts

Move the collimator to

Collimator. correct position until it “clicks”.

- Error should clear.

- If not check the microswitch operation.

22 Instrumentarium Dental 200214 rev 3

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

2 Electric trouble shooting

Possible causes:

Signal COL1SW active and/or COL2SW passive in the Core Module.

Check or test: Parts

Test the microswitch

Collimator. operation: move the collimator.

- If the error stays check the wiring and micros w it ch alignment.

- Remove THA cover. Visually check that the switches trigger according to the code bar and that switch levers move freely.

Check the wiring:

- Check the connectors and wires for open or broken wire.

- Check the wiring order on microswitch.

- If error happens at OT

S31, S32,

S33, CC1,

X113, C13,

X8, Core

Module,

collimator

code bar upgrade, check the type of the collimator code disk: there are two different models.

Test wiring :

- Use Sr 74 IOC. Move the collimator to check that the signal status changes. If the signal does not change, then use wiring diagram and/or DVM to find the problem.

200214 rev 3 Instrumentarium Dental 23

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

D500211, 3

Approved

2 Electric trouble shooting

2.3.5 Sy 25 AEC

Problem: “Sy 25 AEC“ error message

is displayed.

Why? AEC base frequency

incorrect.

How is it detected? Occurs in the AEC mode if

the AEC base frequency (AECFRQ during stand by) is below 5 kHz. Exposure sequence is interrupted.

NOTE! The unit can be used in Manual exposure mode.

Possible cause Check or test Parts rela ted

+25V or -25V operating voltages not ok

Wrong AEC base frequency.

Green LED’s on AEC board and Filament board. Check the power lines

Check base frequency with “Sr

AEC board, X39, Filament board, X35, C13, X27, Power Supply board

AEC board

90 INS” option “FRE” or “Sr 78 FrE”. Adjust to 5kHz.

AEC base frequency drifts.

Check with Sr 90 INS

AEC board

Problem with AEC board.

Open connector Check the wiring.

In CR models check the 15V regulator.

Broken Core Module: signal

Check the signal

and its wiring. FILT15. Optocoupler.

24 Instrumentarium Dental 200214 rev 3

Reviewed: Rintamäki Markus 2008-05-26 15:43 Approved: Äärynen Teemu 2008-06-04 17:35

See PDM system to determine the status of this document. Printed out: 2015-04-10 11:48:23

AEC board, X116, C13, X6, Core Module

D500211, 3

Approved

+ 82 hidden pages