Dentsply Sirona CEREC Primescan AC User manual

New as of: 05.2019
CEREC Primescan AC, Primescan AC,
CEREC Omnicam AC, Omnicam AC
Service Manual
English

Table of contents Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
266 81 832 D3696
D3696.076.01.02.0205.2019
Table of contents
1General information ................................................................................................ 6
1.1 General information ..................................................................................... 6
1.2 Additional information .................................................................................. 7
1.3 Structure of the document............................................................................ 8
1.3.1 Identification of the danger levels .................................................. 8
1.3.2 Formats and symbols used............................................................ 8
1.4 Safety instructions........................................................................................ 9
1.4.1 Qualification of service personnel.................................................. 9
1.4.2 Changes to the unit........................................................................ 9
1.4.3 Electrostatic discharge................................................................... 9
1.4.4 Ventilation slots.............................................................................. 9
1.4.5 Disconnecting the power supply .................................................... 10
1.4.6 Replacing parts.............................................................................. 10
1.4.7 Measurements ............................................................................... 10
1.4.8 Important instructions after repair / maintenance........................... 11
1.4.9 Safety labels .................................................................................. 11
1.4.10 Wireless phone interference with equipment................................. 13
1.4.11 Integration in a network or connection to a modem....................... 13
1.4.12 Disposal ......................................................................................... 14
1.5 Technical data.............................................................................................. 15
1.6 PC overview ................................................................................................ 17
1.6.1 CEREC Primescan AC / Primescan AC components.................... 17
1.6.2 CEREC Omnicam AC /Omnicam AC components........................ 18
1.6.3 Overview of the connections on the PC......................................... 19
2Service tools ........................................................................................................... 21
2.1 TeamViewer................................................................................................. 21
2.2 "OTC" radio module tool .............................................................................. 22
2.3 "DrOmni" Omnicam diagnostics program .................................................... 23
2.4 "DrPrimescan" Primescan diagnostics program .......................................... 26
2.5 Dentsply Sirona Restore Solution ................................................................ 29
2.5.1 Objective........................................................................................ 29
2.5.2 Compatible PCs............................................................................. 30
2.5.3 Prerequisites for performing this procedure................................... 31
2.5.4 When can the procedure not be used?.......................................... 31
2.5.5 It is lost:.......................................................................................... 31

Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
Table of contents
66 81 832 D3696
D3696.076.01.02.0205.2019 3
2.5.6 Performing the restore process...................................................... 32
2.5.6.1 Connecting the USB stick............................................. 32
2.5.6.2 Systems without a separate keyboard.......................... 32
2.5.6.3 Systems with a separate physical keyboard................. 32
2.5.6.4 Proceeding with the process ........................................ 32
2.5.7 Final steps...................................................................................... 33
3Scanner .................................................................................................................. 34
3.1 Calibrating the scanner ................................................................................ 34
3.2 Color calibration ........................................................................................... 37
3.3 Scanner test and diagnostics....................................................................... 40
3.3.1 CEREC Primescan / Primescan .................................................... 40
3.3.1.1 Scanner Test and Diagnostics for CEREC
Primescan / Primescan................................................. 40
3.3.1.2 Test instruction for inspecting the voltage output on
the interface card.......................................................... 45
3.3.2 CEREC Omnicam / Omnicam........................................................ 46
3.3.2.1 Scanner test and diagnostics for CEREC Omnicam /
Omnicam ...................................................................... 46
4Repair ..................................................................................................................... 50
4.1 General information on assembly ................................................................ 50
4.2 Removing covers and holders ..................................................................... 51
4.2.1 Removing and installing covers ..................................................... 51
4.2.1.1 Cover overview............................................................. 51
4.2.1.2 Opening the service cover............................................ 52
4.2.1.3 Closing the service cover ............................................. 52
4.2.1.4 Left cover...................................................................... 52
4.2.1.5 Right cover ................................................................... 54
4.2.1.6 Front cover ................................................................... 55
4.2.1.7 Replacing the kinematics cover.................................... 57
4.2.2 Replacing the CEREC Primescan / Primescan scanner holder..... 58
4.2.3 Replacing the CEREC Omnicam / Omnicam scanner holder........ 59
4.2.3.1 Replacing the heater .................................................... 60
4.3 Replacing parts (without removing covers).................................................. 61
4.3.1 Replacing parts (without removing the service cover) ................... 61
4.3.1.1 Replacing the main fuse............................................... 61
4.3.1.2 Adjusting the footswitch................................................ 62
4.3.1.3 Replacing double castors ............................................. 62
4.3.1.4 Replacing the monitor USB cover ................................ 63
4.3.1.5 Replacing the footswitch............................................... 64

Table of contents Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
466 81 832 D3696
D3696.076.01.02.0205.2019
4.3.1.6 Replacing the camera cable......................................... 65
4.3.1.7 Replacing the O-ring..................................................... 71
4.3.2 Replacing parts (by removing the service cover)........................... 73
4.3.2.1 Replace the monitor kinematics ................................... 73
4.3.2.2 Replacing the monitor................................................... 85
4.3.2.3 Control unit ................................................................... 89
4.3.2.4 Replacing the PC including the power supply unit ....... 94
4.3.2.5 Replace battery (optional) ............................................ 100
4.3.2.6 Replacing the DVD drive (optional) .............................. 101
4.3.2.7 Opening the PC............................................................ 102
4.3.2.8 Replacing the SSD module .......................................... 102
4.3.2.9 Replacing the hard drive............................................... 103
4.3.2.10 Replacing the WLAN card ............................................ 104
4.3.2.11 Replacing the interface card......................................... 104
4.3.2.12 Replace the graphic card.............................................. 105
4.3.2.13 Closing the PC.............................................................. 107
4.4 Replacing parts (whereby the removal of covers is necessary)................... 108
4.4.1 Replace internal scanner cable...................................................... 108
4.4.2 Completely replacing the power input............................................ 108
4.4.3 Replacing the fan........................................................................... 111
4.4.4 Replacing the fan power pack........................................................ 112
4.4.5 Replacing the radio module ........................................................... 113
4.4.6 Replacing the footswitch cable ...................................................... 114
4.4.7 Replace the handle........................................................................ 114
5Settings and adjustments ....................................................................................... 115
5.1 Set the monitor kinematics........................................................................... 115
5.1.1 Removing the covers ..................................................................... 115
5.1.2 Adjust the monitor kinematics........................................................ 119
5.1.3 Check tightness ............................................................................. 121
5.1.4 Readjust the monitor kinematics.................................................... 122
5.1.5 Reattach the covers....................................................................... 123
6Maintenance ........................................................................................................... 127
6.1 Clean the PC fans........................................................................................ 127
6.2 Replacing/cleaning the filter......................................................................... 127
7Circuit diagrams...................................................................................................... 129
7.1 CEREC Primescan AC / Primescan AC ...................................................... 129
7.2 CEREC Omnicam AC / Omnicam AC.......................................................... 130

Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
Table of contents
66 81 832 D3696
D3696.076.01.02.0205.2019 5
8Re-test .................................................................................................................... 131
8.1 When is the re-test carried out?................................................................... 131
8.2 Description of device type............................................................................ 131
8.3 To be carried out on completion of the test.................................................. 131
8.4 What the test steps involve .......................................................................... 131
8.4.1 Visual inspection............................................................................ 131
8.4.2 Protective ground wire resistance.................................................. 132
8.4.3 Device leakage current .................................................................. 132
8.4.4 Insulation resistance ...................................................................... 132
8.4.5 Functional test................................................................................ 133

1 General information
1.1 General information
Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
666 81 832 D3696
D3696.076.01.02.0205.2019
1General information
1.1 General information
Nominal line voltage ranges The acquisition unit works in the following ranges:
Rated line voltage 100-240 V ~ / 50-60 Hz
Nominal current 5.0 – 2.1 A
Wireless phone interference with medical
electrical equipment NOTE
To ensure safe operation of medical electrical equipment, the use of
mobile wireless phones in practice or hospital environments is
prohibited.
Disposal Observe the information on disposal in the relevant operating
instructions.
Installation site Observe the information on the installation site in the relevant operating
instructions.

Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
1 General information
1.2 Additional information
66 81 832 D3696
D3696.076.01.02.0205.2019 7
1.2 Additional information
In addition, you also require:
Wiring diagrams CEREC Primescan AC / Primescan AC / CEREC
Omnicam AC / Omnicam AC
Order No.: "66 83 119"
CEREC Primescan AC / Primescan AC Operating Instructions
Order No.: "66 54 573/66 54 581"
CEREC Omnicam AC / Omnicam AC Operating Instructions
Order No.: "66 54 649/66 54 656"
Spares drive
(including electronic spare parts catalog)
● Order no. Spares drive: 63 21 868
Documents:
Operating the MC XL via LAN (61 90 503)
CEREC Radio Module Operating Instructions (65 45 177)
Service tools
● "DrOmni" Omnicam diagnostics program
● "DrPrimescan" Primescan diagnostics program
● Dentsply Sirona Restore Solution
Tools
● Torx screwdriver, sizes 06, 10, 20, 30, 20 (250mm long)
● Torx screwdriver size 20, torque 2.5 Nm for M4 x 35 screws
● Phillips screwdriver, size 1
● Blade screwdriver, insulated, sizes 2 and 3
● Universal tongs
● Flat tongs
● Side cutting pliers
● Open-end wrench, SW 17, SW 19
Auxiliary tools & equipment
● Digital Multimeter, Accuracy Class 1
● Soldering tool for repairing cables
● Cable ties
● Teflon tape
● Loctite 221, alternatively Loctite 243
● Fuses (recommended):
F1/F2 (2 pcs) T8A H 250V Order No.: 62 33 188

1 General information
1.3 Structure of the document
Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
866 81 832 D3696
D3696.076.01.02.0205.2019
1.3 Structure of the document
1.3.1 Identification of the danger levels
To prevent personal injury and material damage, please observe the
warning and safety information provided in these operating instructions.
Such information is highlighted as follows:
DANGER
An imminent danger that could result in serious bodily injury or death.
WARNING
A possibly dangerous situation that could result in serious bodily
injury or death.
CAUTION
A possibly dangerous situation that could result in slight bodily injury.
NOTE
A possibly harmful situation which could lead to damage of the
product or an object in its environment.
IMPORTANT
Application instructions and other important information.
Tip: Information for simplifying work.
1.3.2 Formats and symbols used
The formats and symbols used in this document have the following
meaning:
Prerequisite
1. First action step
2. Second action step
or
➢ Alternative action
Result
➢ Individual action step
Requests you to do something.
See "Formats and symbols used
[→8]"
Identifies a reference to another
text passage and specifies its
page number.
● List Designates a list.
"Command / menu item" Indicates commands / menu
items or quotations.

Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
1 General information
1.4 Safety instructions
66 81 832 D3696
D3696.076.01.02.0205.2019 9
1.4 Safety instructions
1.4.1 Qualification of service personnel
The installation, commissioning, and repairs may only be performed by
personnel authorized by Dentsply Sirona for this purpose.
1.4.2 Changes to the unit
Modifications to this unit which might affect the safety of the system
owner, patients or other persons are prohibited by law!
In order to ensure product safety, this device may be operated only with
original Dentsply Sirona accessories or third-party accessories
expressly approved by Dentsply Sirona. In particular, only the power
cable also supplied or the corresponding original spare part may be
used with the unit. The user is responsible for any damage resulting
from the use of non-approved accessories.
1.4.3 Electrostatic discharge
ESD warning label CAUTION
Risk of injury or damage to components from electrostatic discharge
For electrical components labeled with an ESD warning label,
observe the following instructions.
➢ Apply the ESD protective measures.
➢ Do not touch connector pins or sockets without applying ESD
protective measures first.
➢ Do not establish any connections between these connectors
without applying ESD protective measures first.
ESD protective measures ESD protective measures include:
● Procedures for preventing electrostatic charge build-up (e.g. air
conditioning, air moistening, conductive floor coverings and non-
synthetic clothing)
● Discharging the electrostatic charges of your own body on the frame
of the UNIT, the protective ground wire or large metallic objects
● Connecting yourself to ground using a wrist band.
Before replacing the boards, observe the ESD protective measures.
1.4.4 Ventilation slots
Under no circumstances may the ventilation slots on the unit be
covered, since otherwise the air circulation will be obstructed. This can
cause the unit to overheat.

1 General information
1.4 Safety instructions
Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
10 66 81 832 D3696
D3696.076.01.02.0205.2019
1.4.5 Disconnecting the power supply
If the device must be opened during maintenance work, this may be
done only after disconnection of the power supply to the device.
CAUTION
Damage/danger resulting from unauthorized alterations
Modifications to the device may only be performed following prior
consultation with us. We are not liable for unauthorized alterations of
any kind.
Prior to opening the unit, connecting a measuring instrument or
replacing parts:
➢Turn the device off.
➢Disconnect the power plug.
1.4.6 Replacing parts
WARNING
Potentially lethal shock hazard when working near the power supply
unit
Disconnect from the line power supply.
Check for zero potential.
Switch the device off and disconnect the power plug before replacing
parts.
The item numbers for ordering spare parts can be found in the spare
parts catalog on the combi stick.
The diagrams contained in the spare parts catalog provide a useful
guide when replacing parts.
Before replacing the boards, observe the ESD protective measures.
1.4.7 Measurements
Always switch off the device before connecting the measuring
instrument.
Select the correct current/voltage type and adjust the measuring range
to match the expected readings.
Perform continuity tests only on devices which are switched off.

Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
1 General information
1.4 Safety instructions
66 81 832 D3696
D3696.076.01.02.0205.2019 11
1.4.8 Important instructions after repair / maintenance
To ensure a safe operating condition for the device, the following
checks must be performed after repair / maintenance:
● Any connections that may have loosened during repair must be
reconnected. This applies in particular to lines for the power supply
and for the protective earth conductor. The protective earth
conductor resistor must be checked after attaching the covers.
– R < 100 mΩ between components connected to the protective
earth conductor and the protective earth conductor connection to
the power socket.
1.4.9 Safety labels
Fuses
NOTE
Use ONLY fuses of the same type!

1 General information
1.4 Safety instructions
Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
12 66 81 832 D3696
D3696.076.01.02.0205.2019
Plug connections of external interfaces
CAUTION
Adaptation of acquisition unit to external components
Additional devices connected to external interfaces must be tested
according to the relevant standards, e.g.:
EN 60601-1:2006 + Cor.:2010 + A1:2013,
IEC 60601-1 Edition 3.1:2012,
EN 61010-1:2010 based on IEC 61010-1:2010 + Cor.:2011.
They must be installed outside of the patient area (a radius of 1.5m
surrounding the patient).
WARNING
Risk of electric shock
Low voltages are applied to the sockets for connecting external
interfaces. In order to maintain electrical safety, the rear covers of the
acquisition unit must be kept closed while it is in operation (service
cover and cover on the monitor).
➢ Do not touch the pins of the connectors.
➢ When using the unit on the patient, please note that the covers on
the rear side of the unit (service cover and cover on the monitor)
must remain closed and voltage sources must not be accessible.
The cover on the monitor must not be opened, if both USB
sockets are in use or locked.
➢ The acquisition unit must not be operated inside of the patient
area (within a radius of 1.5 m surrounding the patient) with the
covers open.
NOTE
Risk of damage to the plugs/cables!
The externally connected plugs/cables may be damaged, if they are
overtensioned or if the plug connections do not snap in.
➢ Do not pull on the cables.
➢ Make sure that the plug connections snap in.

Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
1 General information
1.4 Safety instructions
66 81 832 D3696
D3696.076.01.02.0205.2019 13
1.4.10 Wireless phone interference with equipment
The use of mobile wireless phones in practice or hospital environments
must be prohibited to ensure safe operation of the unit.
1.4.11 Integration in a network or connection to a modem
NOTE
Observe the following installation regulations
The following installation regulations apply to integration of the
acquisition unit in a network or connection of the acquisition unit to a
modem:
Network
The acquisition unit may be operated in a network only if it is connected
to a HUB/switch. The hub/switch must:
● be located in the room where the acquisition unit is operated,
permanently installed.
● be grounded via an additional ground wire.
Cross-section of the protective
ground wire
laid protected 2.5 mm2
laid unprotected 4 mm2
Modem
At least one of the following specifications must be fulfilled in order to
operate the acquisition unit on a modem:
● If a modem is connected, the acquisition unit may be operated only
outside of the patient area (radius of 1.5 m surrounding the patient).
● An RS232 isolator compliant with EN 60 601-1-1 with a dielectric
strength of at least 1.5 kV must be installed at the modem end in the
RS232 connecting cable between the acquisition unit and the
modem.

1 General information
1.4 Safety instructions
Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
14 66 81 832 D3696
D3696.076.01.02.0205.2019
1.4.12 Disposal
In accordance with Directive 2012/19/EU and national disposal
regulations regarding old electrical and electronic devices, please be
advised that such items must be disposed of in a special way within the
European Union (EU). These regulations require environmental friendly
usage/disposal of old electrical and electronic devices. Such items must
not be disposed of as domestic refuse. This has been expressed using
the icon of the "crossed out trash can" since March 24, 2006, amongst
other methods.
Please observe the disposal regulations applicable in your country.

Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
1 General information
1.5 Technical data
66 81 832 D3696
D3696.076.01.02.0205.2019 15
1.5 Technical data
Type designation CEREC Primescan AC /
Primescan AC / CEREC
Omnicam AC / Omnicam
AC
Rated line voltage 100 - 240 VAC /50 - 60
Hz
Nominal current 5.0 – 2.1 A
Type of protection against electric shock Class I device
Type of protection against electric shock
(scanner)
Type BF applied part
Degree of protection against ingress of
water
Ordinary device (without
protection against ingress
of water)
Degree of contamination 2
Installation category Ⅱ
Operating mode Continuous operation
Transportation and storage conditions
In the original transport packaging, the acquisition unit withstands the
following environmental conditions during transport and storage:
Temperature -25°C to 60°C
(-13°F to 140°F)
Relative humidity 10% to 75%
Air pressure 700 hPa to 1060 hPa
Operating conditions
The acquisition unit may be operated in the following environmental
conditions:
Ambient temperature 10°C to 35°C
(50°F to 95°F)
Relative humidity 30% to 85%
No condensation
Air pressure 700 hPa to 1060 hPa
Operating altitude ≤ 3000 m

1 General information
1.5 Technical data
Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
16 66 81 832 D3696
D3696.076.01.02.0205.2019
Dimensions and weight
Dimensions W x H x D
in mm
in inches
408 (537) x 1190 x 443
16.06 (21.14) x 46.85 x 17.44
Weight
● Total weight, approx.
● without monitor and
battery, approx.:
● without battery, approx.:
38 kg (83.8 lbs)
31 kg (68.3 lbs)
36 kg (79.3 lbs)

Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
1 General information
1.6 PC overview
66 81 832 D3696
D3696.076.01.02.0205.2019 17
1.6 PC overview
1.6.1 CEREC Primescan AC / Primescan AC components
Component Hardware version
V1.7.1
Hardware version
V1.7.2
Power supply unit: Fortron FSP650-70UA Fortron FSP650-70UA
Mainboard: MSI Z370 PC PRO
(MS-7B49 V1.0)
BIOS version 1P7
MSI Z370 PC PRO
(MS-7B49 V1.0)
BIOS version 1P7
Processor: intel i7-8700 intel i7-8700
Memory: 4 x 8 GB,
DDR4-2400 RAM
4 x 8 GB,
DDR4-2400 RAM
SSD module: 960 EVO 250 GB 960 EVO 250 GB
Hard disk: Seagate ST2000LX001 Seagate ST2000LX001
Graphics card: RADEON RX 570 8 GB
(various manufacturers)
RADEON RX 570 8 GB
(various manufacturers)
Supply board: Interface card QCC
FBG, 3-E3,
6634245
Interface card QCC
FBG, 3-E3,
6634245
Sound card: Realtek HD Audio on-
board
Realtek HD Audio on-
board
LAN: GBE LAN on board GBE LAN on board
WiFi / WLAN: TP-Link T9E Archer TP-Link T6E Archer
Operating system: Windows 10, 64 bit Windows 10, 64 bit

1 General information
1.6 PC overview
Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
18 66 81 832 D3696
D3696.076.01.02.0205.2019
1.6.2 CEREC Omnicam AC /Omnicam AC components
Component Hardware version
V1.1.1
Hardware version
V1.1.2
Power supply unit: Fortron FSP650-70UA Fortron FSP650-70UA
Mainboard: MSI Z370 PC PRO
(MS-7B49 V1.0)
BIOS version 1P7
MSI Z370 PC PRO
(MS-7B49 V1.0)
BIOS version 1P7
Processor: intel i7-8700 intel i7-8700
Memory: 4 x 8 GB,
DDR4-2400 RAM
4 x 8 GB,
DDR4-2400 RAM
SSD module: 960 EVO 250 GB 960 EVO 250 GB
Hard disk: Seagate ST2000LX001 Seagate ST2000LX001
Graphics card: RADEON RX 570 8 GB
(various manufacturers)
RADEON RX 570 8 GB
(various manufacturers)
Supply board: Interface card OC FBG,
2-E2,
6634229
Interface card OC FBG,
2-E2,
6634229
Sound card: Realtek HD Audio on-
board
Realtek HD Audio on-
board
LAN: GBE LAN on board GBE LAN on board
WiFi / WLAN: TP-Link T9E Archer TP-Link T6E Archer
Operating system: Windows 10, 64 bit Windows 10, 64 bit

Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
1 General information
1.6 PC overview
66 81 832 D3696
D3696.076.01.02.0205.2019 19
1.6.3 Overview of the connections on the PC
A L4 (monitor +12V)
B L7 (2x or 3x) WLAN antenna
C L1 (trackball/touchpad)
D L2
E L3.2 (scanner)
F L5 (monitor signal HDMI)
G Fan 1 (top)
H Fan 2 (bottom)

1 General information
1.6 PC overview
Dentsply Sirona
Service Manual CEREC Primescan AC, Primescan AC, CEREC Omnicam AC, Omnicam AC
20 66 81 832 D3696
D3696.076.01.02.0205.2019
I Fan 3 (storage battery)
J L6 (monitor USB)
K L9 (radio modules LAN)
L L8 (radio modules USB)
M L12 (trackball/touchpad USB)
IMPORTANT
The position, number and precise layout of the ports for the graphics
card and mainboard may differ depending on the hardware version.