Kavo In eXam 3510 Digital Service manual
Technician's instructions
KaVo In eXam 3510
Always be on the safe side.
Sales:
KaVo Dental GmbH
Bismarckring 39
D-88400 Biberach
Tel. +49 7351 56-0
Fax +49 7351 56-1488
Manufacturer:
Kaltenbach & Voigt GmbH
Bismarckring 39
D-88400 Biberach
www.kavo.com
Technician's instructions KaVo In eXam 3510
Contents
Contents
Contents ............................................................................................................................................................1
1 Product description ........................................................................................................................................2
1.1 Description of electronics .........................................................................................................................2
1.1.1 System overview ..............................................................................................................................2
1.1.2 Control unit .......................................................................................................................................2
1.1.3 HF Mainboard ...................................................................................................................................6
1.2 Functioning of In eXam electronics ........................................................................................................15
1.2.1 Basic mode (idling) .........................................................................................................................15
1.2.2 Switch between 4/7mA ...................................................................................................................15
1.2.3 Exposure ........................................................................................................................................16
1.2.4 Vheat control ..................................................................................................................................16
1.2.5 kV selection and kV control ............................................................................................................16
2 Complete exchange of the x-ray head .........................................................................................................18
2.1 Remove the x-ray head ..........................................................................................................................18
2.2 Install the x-ray head ..............................................................................................................................20
2.3 Final tasks ..............................................................................................................................................21
3 Exchanging the scissor arm .........................................................................................................................22
3.1 Remove the x-ray head ..........................................................................................................................22
3.2 Disassembling the scissor arm ...............................................................................................................24
3.3 Assembling the scissor arm ...................................................................................................................25
3.3.1 Prepare the arm system .................................................................................................................25
3.3.2 Mount the arm system ....................................................................................................................27
3.3.3 Wiring .............................................................................................................................................27
3.4 Final tasks ..............................................................................................................................................28
4 Troubleshooting for service .........................................................................................................................29
4.1 Error messages on the display ...............................................................................................................29
4.2 Measurements ........................................................................................................................................30
4.2.1 Voltage measurement on the mainboard .......................................................................................30
4.2.2 Measure resistance on the main board ..........................................................................................31
4.3 Identifying errors .....................................................................................................................................32
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1 Product description | 1.1 Description of electronics
1 Product description
1.1 Description of electronics
1.1.1 System overview
1.1.2 Control unit
Layout
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Technician's instructions KaVo In eXam 3510
1 Product description | 1.1 Description of electronics
DIP switch
Default
Only the In eXam control unit is connected and active.
Dig eXam-Mode blocked
The tube current cannot be switched to 4 mA.
7 mA is permanently selected.
Special settings for Australia
In Australia, the setting is specified for film correction during the acceptance test
and cannot be changed by the user.
Only film types 0-5 can be selected when the required combination of keys is pres‐
sed.
Only film types 0-7 can be selected when the required combination of keys is pres‐
sed.
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1 Product description | 1.1 Description of electronics
Only film types 0-8 can be selected when the required combination of keys is pres‐
sed.
External exposure switch or control unit
When there is an external exposure switch, the exposure can be independently
triggered by the In eXam control unit or the external switch.
External exposure switch and control unit
Exposure is only triggered when the external exposure switch and the control unit's
exposure switch are simultaneously activated (such as the door safety switch).
External exposure switch
The exposure can only be triggered with the external exposure switch; the control
unit is only used to select the exposure data.
Self test
▶ Turn off the In eXam.
▶ Hold down the D(igital) key, and turn on the In eXam.
▶ Release the D(igital) key when there is nothing on the display.
The following tests are independently run by the system:
▪ The firmware version is displayed
▪ LED Test
▪ Acoustic alarm; four different beeps
▪ Keyboard test
▪ The setting of the DIP switches (SW 1...8) is displayed
▪ The exposure counter is displayed
▪ The exposure counter total is displayed
After a test is successful, the unit switches to user mode.
All LEDs are on, a beep sounds.
The EEPROM has a bad contact in the socket.
Open the control unit, and check the EEPROM for a proper seat.
EEPROM test
▶ Turn off the In eXam
▶ Hold down the film type selection key ▼, and turn on the In eXam
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▶ Once the display no longer shows anything, release the key.
▶ «EEPROM test» appears on the display.
▶ After the test is successful, «EEPROM passed» appears.
▶ The exposure counter is reset
Initialisation
▶ Turn off the In eXam.
▶ Hold down the kV key and D(igital) key, and turn on the In eXam.
▶ Release the key when there is nothing on the display.
▶ The message «Init:Context» appears on the display.
▶ The exposure counter is reset.
Adjust the display brightness
When all functions are okay and there is nothing on the display or the display is dim:
Adjust the display brightness.
▶ Open the In eXam control unit, and adjust with potentiometer P1.
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Technician's instructions KaVo In eXam 3510
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1.1.3 HF Mainboard
Block diagram of mainboard
In eXam HF mainboard
Measure mains voltage
▶ Set the voltmeter to the 300VAC measuring range
▶ Set the voltmeter to the 300VAC measuring range
▶ Connect the measuring tips to L +N
▶ Connect the measuring tips to L +N
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Technician's instructions KaVo In eXam 3510
1 Product description | 1.1 Description of electronics
▶ Turn on the In eXam
▶ Turn on the In eXam
▶ Note the no-load voltage: Uo = 230 V (+6%/-10%)
▶ Note the no-load voltage: Uo = 230 V (+6%/-10%)
▶ Set parameters: Film type 9, 60kV, 7mA, occlusal mode
▶ Observe radiation protection measures
▶ Trigger the exposure
▶ Note the load voltage (U
▶ Calculate the voltage fluctuation (Uo – U
▶ When the voltage fluctuation > 9V: Check the power cable
+ 36 V
) during exposure
load
< 9V [~4%])
load
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1 Product description | 1.1 Description of electronics
+ 12 V, isolated
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1 Product description | 1.1 Description of electronics
+ 5 V, isolated
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