KLS Martin marLED X Service Manual Download Page 108

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Operating Light System marLED

® X

Service Manual

108

Revision 02

Check the tightening torques on the intermediate ceiling assembly (ICA)

1 Ceiling anchor plate

2 M16 fixing nuts

3 Intermediate plate

•

Check all M16 fixing nuts (2) of the ceiling anchor plate (1) and the intermediate plate (3) for
proper tightening, using a torque of 195 Nm.

Summary of Contents for marLED X

Page 1: ...Front Cover English Operating Light System marLED X Service Manual 90 434 62 10 Revision 02 Date of Release 2021 01 www klsmartin com ...

Page 2: ...Instructions for use Follow Instructions for use Reference number for ordering Gebrüder Martin products item number Serial number Transport and store dry Information on minimum and maximum temperature for storage and transportation See Operating Light System marLED X Instructions for Use for valid values Information on minimum and maximum atmospheric pressure for storage and transportation See Ope...

Page 3: ...conformity NRTL certification mark from TÜV Rheinland Apply screw lock to the screw see section 3 3 Screw Locking page 16 Tighten screw nut with specified torque see section 3 4 Torques for Metric Threads page 17 Grease at this location see section 3 5 Greasing page 17 Warning Dangerous high voltage Symbol for inspection work Symbol for maintenance work Symbol for repair work ...

Page 4: ...4 Revision 02 This product may not be disposed of as normal household garbage see section 15 2 Disposal of the Device page 137 ...

Page 5: ...the Lights Structure of the Ceiling Tube 18 4 2 SMPS 28 6 Power Module 19 4 2 1 IT Grids and Standard Grids 19 4 2 2 Circuit Diagram without ASPS Assembly 20 4 2 3 Circuit Diagram with Integrated ASPS Changeover Assembly 21 4 2 4 Connections and Fuses 22 4 2 5 Function of the Integrated ASPS Changeover Assembly Option 23 4 2 6 Connection to On Site Power Supply 23 5 Bus System marLED RS232 25 5 1 ...

Page 6: ...ock 46 6 2 1 Voltage Test Measuring Points on the Tracking Arm 46 6 2 2 Replacing the Contact Block 49 6 3 Replacing the Slip Ring 50 7 Video Cabling 51 7 1 Image Transmission via Cable 51 7 1 1 Video Cabling to Monitor 52 7 1 2 Video Cabling to Wall Box 52 7 2 Image Transmission without Cable 53 7 2 1 mLB System 53 7 2 2 Bluetooth System 53 7 2 3 Video System surgiCam HD Wireless and surgiCam 4K ...

Page 7: ... 4 marTouch Pro on the Light Head 84 9 5 marTouch Pro 4 3 10 9 cm 85 10 Description of Assemblies 86 10 1 Control Electronics Board 86 10 1 1 Design including Microfuses 86 10 2 Measuring Points 88 10 2 1 Control Panel Foil Measuring Points 89 11 Firmware Update Bluetooth Pairing 90 12 Hardware and Firmware States 90 13 marTouch Pro Access Service Admin Menu 93 14 Maintenance 99 14 1 Troubleshooti...

Page 8: ... on how to handle the device or product or use it for clinical applications please do not hesitate to contact the Product Management Phone 49 7461 706 321 Fax 49 7461 706 190 In case of technical questions and questions regarding maintenance contracts and training please contact our Martin Service Center Phone 49 7461 706 343 Fax 49 7461 706 484 E mail service klsmartin com To answer your technica...

Page 9: ...tatable in 3 axes LC cardanic Low ceiling cardanic suspension simplified cardanic system with one cardan joint rotatable in 2 axes for use in low rooms COM COM interface RS232 for marLED or surgiCam ICA Intermediate ceiling assembly LED Light emitting diode s Light engine LED illumination unit with 16 individual LEDs marTouch Pro Control unit for the operation of cameras and lights marLED X mLB ma...

Page 10: ...rtise This service document is intended to support you in performing your highly responsible work While participation in a service training course authorizes technicians to perform mounting and service work it does not confer any authorization for providing user advice Regarding the latter Gebrüder Martin offers special product training Information on torques and screw lock for screws to be used d...

Page 11: ... system components have been properly cleaned and disinfected before starting any servicing work on the light system Risk of interference and malfunction As a medical electrical device the operating light is subject to special precautions regarding electromagnetic compatibility EMC It is mandatory to install and operate the device in accordance with the EMC Guidelines Operating HF devices in the v...

Page 12: ...n with other medical devices objects and accessories This duly instructed officer shall subsequently be responsible for familiarizing the operator s staff with the device as the need arises We recommend documenting all user instructions in a medical device logbook A copy of the logbook is available from Gebrüder Martin The operational safety of the device must be verified at regular intervals see ...

Page 13: ...tin to perform such tasks in accordance with the instructions provided in this manual competently and with utmost precision in compliance with relevant technical safety and accident prevention regulations The parts to be mounted must be checked for defects and potential damage in transit immediately upon receipt of the goods Inspection Check all safety related parts according to the inspection pla...

Page 14: ...ements regarding creepage distances and clearances or must be UL listed To prevent any risk of electric shock be sure to connect the lights only to power supply systems providing protective grounding For mobile lights with detachable mains plug power supply cable free access to the socket outlet must be possible at any time to ensure that the light can be easily disconnected from the power supply ...

Page 15: ...injury due to high spring forces Spring arms whose loads light heads or light head subassemblies are detached or whose transport protection is removed can snap upwards quickly and with great strength and thus cause severe injuries Before removing a load from a spring arm always block the spring arm vertically or tie it down first Danger of injury and risk of damage caused by defective service tool...

Page 16: ... of loosening of non secured screw connections If screws are mounted without threadlocker thread locking fluid compound they may break loose over time in the course of using the light Observe Secure screws using threadlocker If dismounted screws are reinserted a thread locking fluid must be used Screws affected by this risk are marked in this document with the following symbol Secure screws using ...

Page 17: ...r service work although it is required please refer to the following table for the required torque Dimension Torque in Nm Dimension Torque in Nm M4 3 5 M12 93 M5 6 5 M16 195 M6 11 5 M20 280 M8 27 M50x1 5 160 groove nut for central bearing shaft M10 54 Screws of strength class 8 8 with friction factor µk µG 0 14 3 5 Greasing Potential premature wear of safety relevant components Locking segments an...

Page 18: ...he following mounting positions MP2 MP4 MP3 contains the input terminals 120 230 V for power supply to a device that is powered by mains voltage e g marLED E3 heat radiator or surgiCam HD Wireless receiver unit MP4 includes a preparation for installation of a monitor power supply unit MP5 always contains the COM interface or the CAN board MP6 always includes the central equipotential bonding termi...

Page 19: ...position 4 2 SMPS 28 6 Power Module 4 2 1 IT Grids and Standard Grids For IT grids power supply Insulated consumer protection grounding French Terre the input N fused X12 is used In case of standard grids with grounded neutral conductor the unprotected N input X10 is used The serial terminals 3 are used for connection of monitor power supply units ...

Page 20: ...r supply Connector Connector designation Fuse rating X1 Input 100 240 VAC 50 60 Hz F1 F2 X3 Output 30 0 75 VDC T 5 AH 250 V Terminal connection X1 X3 Conductor cross section flexible leads max 2 5 mm 16 mm Conductor cross section w connector sleeve max 2 5 mm 16 mm For IT grids power supply Insulated consumer protection grounding French Terre the input N fused is used In case of standard grids wit...

Page 21: ...gnation Fuse rating X1 Input 100 240 VAC 50 60 Hz F1 F2 F4 X2 Input Battery 24 36 VDC T 5 AH 250 V T 10 AH 250 V X3 Output 30 0 75 VDC X5 ASPS LED AC GN DC RD in the canopy Terminal connection X1 X4 X2 X3 Conductor cross section flexible leads max 2 5 mm 16 mm Conductor cross section w connector sleeve max 2 5 mm 16 mm For IT grids power supply Insulated consumer protection grounding French Terre ...

Page 22: ... supplied with or without ASPS switching Standard wiring is carried out via N and L protected by F1 in the inside of the power module In case of IT grids the connection N fused protected by F2 is used instead of N In case of the variant for ASPS the battery input is protected by F4 in the inside of the power module If the power module is supplied with mains voltage the LED AC ok 1 that is visible ...

Page 23: ...6 Connection to On Site Power Supply Danger of serious injury from electric shock Make sure that the power supply lines are de energized while you are working on the system and that accidental reconnection to the supply system is reliably prevented throughout The on site power supply separate supply lines for each power module is connected to the terminals N L and PE of the respective power module...

Page 24: ...e canopy for this purpose If additional status LEDs are needed for additional power modules in the case of multi light setups appropriate holes can be drilled in the canopy using a drill bit Ø 8 mm Connect the ASPS lines RD BU to the terminals B B of X2 Input Battery The entrained PE conductor GN YE can be connected either to X2 PE or to the central equipotential bonding terminal at MP6 If the PSU...

Page 25: ...ables for 3 4 devices The cables and couplers are lettered to prevent mix up Mounting the central bearing shaft 8 on the ceiling tube Plug the RJ45 cables 1 and 2 into the matching identically lettered couplers 6 and 7 extending from the bearing shaft 4 Input 2 plug 5 Input 1 plug 6 Input 1 coupler 7 Input 2 coupler 8 Central bearing shaft central axis Make sure that the terminating resistor is co...

Page 26: ...his purpose the marLED board is connected to the central equipotential bonding terminal on the ceiling tube via its PE connection during installation on the ceiling tube If the board is installed separately the connection to the PE of the light system must be ensured A PE terminal 14 is located on the top hat rail 15 for the on site connection The RJ45 connection sockets of the marLED board are ma...

Page 27: ... the above mentioned specification can lead to mLB failure Make sure that both cable ends are identically connected to the respective plug Use only 1 1 cables do not use crossover or host cables Cables supplied by Gebrüder Martin comply with the TIA 568 B standard see section 5 1 2 Pin Assignment acc to TIA 568 B page 27 5 1 2 Pin Assignment acc to TIA 568 B Assignment when replacing a connector T...

Page 28: ...Operating Light System marLED X Service Manual 28 Revision 02 5 1 3 Circuit Diagram Video Cabling CAT Cabling ...

Page 29: ...n addition a marTouch Pro table base ceiling mounted supply unit shown here End stop CAN board 5 1 3 2 CAT Cabling in the Bluetooth System marLED X with surgiCam HD Bluetooth master Bluetooth communication marLED X with sensoGrip Plug connection TFT bracket marView with power supply video signal and grounding Sliding contact In addition a marTouch Pro table base ceiling mounted supply unit shown h...

Page 30: ...on monitoring If DIP 2 3 and 4 are not set to OFF malfunctions can occur in case of external insulation monitoring If one ceiling tube supports more than 2 lights 2 RJ45 cables must be connected as follows The cable for the lights 1 and 2 to X1 the other cable to X2 X4 PANEL can be optionally used for connecting a marTouch Pro control unit while X5 INTERFACE permits connecting up to 2 COM interfac...

Page 31: ... if configured X1 INPUT 1 Lights 1 2 To prevent mix up the connection points are correspondingly marked lettered on the printed circuit board X3 Pin Signal Cable color s TIA 568 B 1 PE Shield 2 VDC light 1 BU BNWH 3 VDC BN BUWH 4 mLB H 1 GNWH 5 mLB L 1 GN DIP switch S1 DIP OFF ON 1 Terminating resistor off Terminating resistor on 2 2 VDC separated 2 VDC connected 3 3 VDC link separated 3 VDC link ...

Page 32: ...nt VDC light 1 VDC Measuring point VDC light 1 X1 RJ45 socket Connection to the marLED board Pin Signal 1 Shield PE reference potential 2 Shield PE reference potential 3 mLB H1 4 1 VDC 5 1 VDC 6 mLB L1 7 1 VDC 8 1 VDC X2 terminal block for single wire connection Pin Signal 1 PE 2 1 VDC 3 1 VDC 4 mLB H1 5 mLB L1 ...

Page 33: ... marTouch Pro Wall Box Connections Front 1 Wall box 2 Socket 3 Power supply for external auxiliary device 4 Connector lockable 5 1 8 marTouch Pro Wall Box Pin Assignment X3 front view Pin Signal 1 VDC GND 2 VDC GND 3 PE mLB GND 4 mLB H 5 mLB L 6 PE mLB GND 7 VDC 8 VDC ...

Page 34: ...ntrol electronics is linked to Tx of the PC and vice versa The RS232 serial interface test tool from Gebrüder Martin can be used to check the communication with the board see Instructions for Use RS232 Serial Interface Test Software REF 90 445 52 10 The board is equipped with several communication options Modbus serial bus This is implemented by means of specific firmware on the board For the chec...

Page 35: ...sion 02 35 5 2 1 COM Interfaces for Ceiling Tube and Separate Installation Malfunctions of the marLED bus If the boards are installed separately the connection to the PE of the light must be ensured as otherwise the common reference potential is missing ...

Page 36: ... X2 mLB RS232 Pin Color Signal connection Terminal block RS232 1 GN RS232 GND 2 BN RS232 RX 3 WH RS232 TX YE The yellow lead of the RS232 cable is not used 4 Supply VDC 5 Supply VDC 6 mLB L 7 mLB H Pin Color Signal connection Pin RS232 plug 1 GN RS232 GND 5 2 BN RS232 RX 3 5 WH RS232 TX 2 ...

Page 37: ... switch 8 fold 5 Firmware version 2 Reset button 4 USB connection For correct synchronization of multiple lights the mLB address must be set correctly even in the absence of a wall control panel When replacing the control electronics adopt the DIP switch positions Switch 8 fold 1 ON 0 OFF mLB address Mounting position DIP 1 DIP 2 Address MP4 green 1 1 3 MP3 blue 0 1 2 MP2 yellow 1 0 1 MP1 red 0 0 ...

Page 38: ... off Terminating resistor on 8 Programming mode off Programming mode on Bluetooth may be switched on only if lights 2 3 and 4 do not communicate via mLB If necessary disconnect the cable connections mLB H and mLB L The changes become effective only after a restart of the system After changing the mLB address or the position of DIP switches as well as after connecting or removing components the com...

Page 39: ...3 Camera in light head Camera stand alone 4 CAN communication Bluetooth communication 5 HD 4K 6 Reserve Reserve 7 Always OFF for marLED X series only for marLED E series 8 Programming mode off Programming mode on DIP switch 2 2 fold terminating resistor configuration marLED DIP OFF ON 1 Terminating resistor off Terminating resistor on 2 Terminating resistor off Terminating resistor on A camera in ...

Page 40: ... 3 With marTouch Pro 4 3 Light 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 Light 2 0 0 0 0 0 0 0 0 0 0 Light 3 0 0 0 0 0 Wall control panel 1 marTouch Pro Presetting 1 DIP 3 1 1 1 1 1 1 1 1 1 Wall control panel 2 marTouch Pro Presetting 1 DIP 3 1 1 1 RS232 Presetting 1 1 1 1 1 1 1 1 1 1 marLED board standard separate on ceil tube 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Camera on separate arm 1 1 1 0 0 0 0 0 0 0 0 0 1 1...

Page 41: ...is set If two external control units marTouch Pro or wall panel are present in the system the terminating resistor is to be set on both units In this case the terminating resistor must not be set on any light The terminating resistor of the marLED board Standard is usually deactivated In exceptional cases e g in case of long cables termination in a star layout may be required activated Malfunction...

Page 42: ...istor of the multi pole light that communicates with the marTouch Pro via mLB must be set There is no mLB Bluetooth mixed system If a marTouch Pro is present in a Bluetooth system it must be connected to the control electronics of a light via cable Installation on the light head Internal cabling in the cardanic system Installation on wall table standard rail external Cabling 5 9 poles via mLB to t...

Page 43: ...e wiring without surgiCam or 9 pole wiring with surgiCam with slip rings in the ceiling tube top of figure and a rotary connector for spring arm connection On the ceiling tube the leads are attached to connectors power supply L1 L4 surgiCam video signals Pr Pb Y mLB RJ45 The VDC supply voltage for the mLB is taken from L1 RJ45 input 1 pins 4 and 7 parallel RJ45 pin assignment RJ45 Input 1 RJ45 Inp...

Page 44: ...ram for 3 Pole Tracking Arm 6 1 3 Circuit Diagram for 5 Pole Tracking Arm Fig 6 1 Example of RJ45 cabling light 1 In the case of light systems please note the different color marks on the slip ring connections Tracking arm 1 RD Tracking arm 3 BU Tracking arm 2 YE Tracking arm 4 GN ...

Page 45: ...n 02 45 6 1 4 Circuit Diagram Tracking Arm 9 pin Fig 6 2 Example of RJ45 cabling light 1 In the case of light systems please note the different color marks on the slip ring connections Tracking arm 1 RD Tracking arm 3 BU Tracking arm 2 YE Tracking arm 4 GN ...

Page 46: ... VDC De energize the system Reconnect the connector to the terminal device 5 Re energize the system Turn on the terminal devices and set it to nominal load Using a r m s voltmeter measure the supply voltage between the VDC and VDC connections of the contact block terminal The supply voltage measured on the contact block at maximum brightness setting must be at least 24 VDC If the DC supply is prov...

Page 47: ...D X Service Manual Revision 02 47 Fig 6 3 Contact block 3 pole marLED X 24 36 VDC 1 2 PE GNYE 3 4 VDC RD 5 6 VDC BU 7 unassigned Fig 6 4 Contact block 5 pole 1 2 PE GNYE 3 4 VDC RD 5 6 VDC BU 7 mLB H WH 8 mLB L BH 9 10 unassigned ...

Page 48: ...rLED X Service Manual 48 Revision 02 Fig 6 5 Contact block 9 pole 1 2 PE GNYE 8 Y Core of GN 3 VDC RD 9 Shield BK shrink tubing 4 VDC BU 10 PB core of BU 5 mLB H WH 6 mLB L BN A Bunched cable with shrink tubing 7 PR Core of RD ...

Page 49: ...ove the Phillips screw 6 Lift the contact block over the stop screw 4 and remove it 4 Stop screw 6 Phillips screw for fixing the contact block 7 Contact tongues 8 Mounting tool REF 08 666 26 04 9 Slip rings Installation of the contact block using the mounting tool Use the mounting tool 8 Position the contact tongues 7 on the corresponding slip rings 9 using the mounting tool ...

Page 50: ... Phillips screw for fixing the contact block Position the contact block 3 on the stop screw 4 and fix it using the Phillips screw 6 Reconnect the plug connection of the contact block 6 3 Replacing the Slip Ring Danger of injury from falling parts when disassembling the suspension arm system For safety reasons special knowledge is required to replace the slip rings For this purpose the Martin Servi...

Page 51: ... mini coaxial plugs couplers 1 are used When fitting the central bearing shaft to the ceiling tube be sure to connect the mini coaxial plugs 1 to the matching same color couplers extending from the central bearing shaft Above the ceiling tube run the 17 m video cable 2 YPbPr 3x mini coax to 3x BNC to the wall box Plug the 3 BNC couplers at the other end 3 of the video cable onto the BNC connectors...

Page 52: ...bling End stop MP3 TFT bracket marView with power supply video signal and grounding 7 1 2 Video Cabling to Wall Box MP1 marLED X with surgiCam HD MP2 marLED X with sensoGrip without video cabling MP3 TFT bracket marView with power supply video signal and grounding On the ceiling mounted supply unit a YPbPr wall socket and an HD SDI wall socket to the monitor Plug connection End stop ...

Page 53: ... Wireless on separate arm Polarity In addition a marTouch Pro on the standard rail End stop marLED COM RS232 interface Wireless video signal 7 2 2 Bluetooth System TFT FS holder with power supply video signal grounding and receiver unit CAN board marLED X with marTouch Pro and sensoGrip Bluetooth master Plug connection marLED X with sensoGrip Sliding contact Camera 4K Wireless on separate arm Pola...

Page 54: ...are mounted at the same height of at least 1 5 m above the floor facing each other and have a direct and unobstructed line of sight The wireless connection can be established only if a monitor is connected Please note when using the video system No more than 2 radio systems may be installed per room Camera receiver pairs are paired ex factory successful pairing The pairing is maintained after swit...

Page 55: ...ntial objects between camera and receiver unit impair the wireless connection Position the object in the middle between the camera and the receiver unit Reduce the distance between camera and receiver unit 7 2 4 Receiver Unit surgiCam HD Wireless Fig 7 1 Receiver unit surgiCam HD Wireless rear 1 HDMI OUT 2 Video signal output HDMI DVI with adapter 2 HDMI OUT 1 Video signal output HDMI DVI with ada...

Page 56: ...t Connect the monitor to the receiver unit and ensure that the monitor is switched on Switch on the receiver unit see Switching on the receiver unit page 56 Switch on the light surgiCam camera Press and hold the CHANNEL 6 Fig 7 1 button on the receiver unit for more than 10 s The STATUS LED 3 Fig 7 1 goes dark and then starts flashing slowly channel search When the STATUS LED is lit yellow the con...

Page 57: ...r Lit with short interruptions Camera can be installed in the light 6 Power green Flashing slowly Receiver unit booting Flashing rapidly See Connection process failed page 58 Flashing briefly with longer interruptions Operating mode reached 7 24 VDC Power supply connection 24 VDC type XP Power ACM12US24 8 Camera pairing connection Pairing connection 25 pin built in female D Sub connector at the si...

Page 58: ...he Pairing 3 Fig 7 2 button on the receiver unit When the Pairing LED is lit red the connection has been established successful pairing If this is not the case please see Connection process failed page 58 When the yellow Status LED is lit with short interruptions the handle camera assembly can be installed in the light Disconnect the handle camera assembly from the pairing connection and install i...

Page 59: ...iolently and may cause severe injury in the process Never dismount the light head unless the spring arm has been moved to its topmost position or alternatively the height stop has been set as shown below Tools aids Hex wrench size 5 mm The spring arm s upward range of movement can be limited to horizontal position to suit the requirements of low rooms Adjust the height stop so that collision with ...

Page 60: ...to the suspension arm system To detach the light first Before starting any work on the light be sure to disconnect the local power supply and take measures to prevent any accidental reconnection 1 Safety sleeve 2 Locking segment 3 Fixing screw 4 Spring arm socket 5 Redundant locking screw M4x5 mm oval head screw without washer acc to DIN 7985 6 Neck of the cardanic system 7 Groove for locking segm...

Page 61: ...e spring arm take care to prevent damage to the plug Insert the plug axially into the respective coupler not at an angle Take firm hold of the spring arm with one hand at the socket 4 then carefully insert the neck 6 of the cardanic system into socket 4 until the grooves 7 8 become visible in the slot Re insert the locking segment 2 through the slot and engage it with groove 7 Re insert the redund...

Page 62: ...aratory Work on Light Head 8 2 1 Removing the sensoGrip Unscrew 3 screws 1 of the handle unit using the sensoGrip screwdriver REF 08 670 48 04 Carefully pull the sensoGrip off the clamping ring of the light head so that the contacts in the D Sub connector are not damaged ...

Page 63: ...ng seal 13 Light housing 4 Cover glass seal 14 Light Engine connectors 8 pcs 5 Cover glass 15 Control panel foil 6 Light engine boards 8 pcs 16 Control Electronics 7 Screws for the supporting frame 6 pcs 17 Fixing screws for control electronics 6 pcs 8 Supporting frame 18 Control electronics connector 9 Cover for cardan cable 19 Fixing screws for Light Engine boards 3 pcs each 10 Sealing ring ...

Page 64: ...t Housing Risk of property damage due to falling parts Never open the light as long as it is attached to the suspension arm system To detach the light first see section 8 1 2 Removing the Light Head from the Spring Arm page 60 Contamination of the light Screws are secured by factory default with a blue PA coating Make sure that no coating residue remains inside the light upon removal of the screws...

Page 65: ...see also Fig 8 4 Note down the installation location of the clamping ring Remove the connector 3 Lift off the clamping ring 4 Lift the cover glass 6 from the light casing 7 using gentle force Carefully deposit the cover glass on a soft surface If necessary replace the seal 5 of the cover glass see section 8 3 2 Replacing the Seal of the Cover Glass page 66 ...

Page 66: ...Remove the seal 5 from the cover glass Fig 8 1 Cross section of the seal profile Install the new seal on the cover glass as illustrated here Proceed as follows Find and mark the joint of the new seal see illustration Place the joint in the non dotted area of the cover glass print see illustration Fig 8 2 Installation of the seal disc still reversed Correct fit of the seal ...

Page 67: ...cover of the cardan cable Risk of property damage from electrostatic discharges ESD Electronic components in the light can be destroyed by ESD Replace electronic components only with sufficient ESD protection Disconnect the cable connector from the Light Engine board Fig 8 3 Light engine board with 3 fixing screws Remove the 3 fixing screws see arrows and lift out the Light Engine board ...

Page 68: ...Light Engine boards are observed Non observance can lead to functional impairment e g limitation of the light field illuminance or illumination depth Fig 8 4 Locations of the Light Engine boards 1 8 The numbering of the Light Engine boards starts at the cardanic system connection arrow and runs clockwise The numbers correspond to those on the clamping ring ...

Page 69: ... System marLED X Service Manual Revision 02 69 Fig 8 5 Light Engine board rear with label Check the number of the board 1 8 on the label 1 Make sure that the Light Engine connectors 1 are installed on the light casing ...

Page 70: ...ng Light System marLED X Service Manual 70 Revision 02 Insert the new Light Engine board with the correct number and tighten the screws at 0 6 Nm Connect the cable connector Observe the positioning of the plug ...

Page 71: ...lat ribbon cables 5 for the control panel foil are located at the now visible corner 1 of the control electronics Carefully pull the lock 4 in the direction of the flat ribbon cable 5 in the direction of the arrow and unlock it Disconnect the flat ribbon cable 5 from the connector 3 Repeat process for second flat ribbon cable The control panel foil is destroyed in the next step ...

Page 72: ...ly free from grease and other residues Push the flat ribbon cable of the new control panel foil through the gap 1 into the light casing Precisely position the control panel foil in the recess 2 and glue it on The contact surfaces of the new control panel foil are located in the direction of the control electronics Open the lock 4 Insert the flat ribbon cable 5 into the connector 3 in the direction...

Page 73: ...nic components in the light can be destroyed by ESD Replace electronic components only with sufficient ESD protection Open the light housing see section 8 3 1 Opening the Light Housing page 64 Remove all Light Engine boards see section 8 3 3 Replacing the Light Engine Board page 67 Disconnect all plug connections on the control electronics Remove the 6 fixing screws of the control electronics boar...

Page 74: ...ved see section 8 3 3 Replacing the Light Engine Board page 67 Danger of spring arm snapping upwards If unsecured the spring arm will snap upwards when removing the light head Therefore be sure to tie down the spring arm first before removing parts of the light head Remove the cover of the brake screw on the top of the light casing and unscrew the brake screw ...

Page 75: ...cable already disconnected 3 Cable harness with black covering VDC RD VDC BU PE GNYE mLB H WH mLB L BN 4 Control electronics connector Loosen the lock orange of the connector 4 and pull off the connector Loosen all leads using a screwdriver 5 and pull them out of the connector 6 ...

Page 76: ...he sealing ring and O ring are mounted on the lateral bearing sleeve before mounting the cardanic system Grease the neck of the cardanic system Thread in the cable of the new cardanic system through the opening Install new cardanic system new circlip and greased washer 7 Always use a new circlip Ensure that the circlip is correctly seated Reassemble the board connector and plug it into the control...

Page 77: ...8 6 Replacing the Lateral Bearing Sleeve Prerequisite The gimbal system has been disassembled see section 8 5 Replacing the Cardanic System page 74 Remove and discard the 4 fixing screws of the lateral bearing sleeve 1 Remove the lateral bearing sleeve including the seal ring Push the lateral bearing sleeve including the previously installed seal ring into the drill hole in the casing The end stop...

Page 78: ...Operating Light System marLED X Service Manual 78 Revision 02 Insert the 4 fixing screws supplied for the lateral bearing sleeve apply screw lock and tighten to a torque of 4 8 Nm ...

Page 79: ... so that the inside of the cover glass remains clean Position the cover glass with seal on the light casing so that the joint of the seal sits on the cardanic system Press in the cover glass using gentle force Replace the seal 4 of the clamping ring if necessary Put on the clamping ring and re tighten it using the 4 screws 1 put aside earlier and a torque of 2 Nm Install the connector 3 If present...

Page 80: ...ction 2 Touch connection 5 Display connection 3 DIP switch 6 Power supply connection Connection cable assignment Connection cable Pin Signal Cable color 1 mLB L GY 2 mLB H YE 3 mLB GND GN 4 VDC BN 5 VDC WH DIP switch S3 DIP OFF ON 1 In operation always OFF 2 In operation always OFF 3 In operation always OFF 4 In operation always OFF Demo developer mode do not set ...

Page 81: ... 2 marTouch Pro Wall 5 9 2 1 Surface Mounting Version During disassembly unscrew the two screws 1 9 2 2 Flush Mounting Version Unscrew the screws 3 and remove the rear cover panel 2 9 2 3 Panel Mounting Version Unscrew the screws 3 and remove the rear cover panel 2 ...

Page 82: ...tch see section 9 1 marTouch Pro 5 12 7 cm page 80 Adapter PCB RJ45 JST 5 pole Assignment RJ45 Assignment adapter PCB RJ45 JST 5 pole Pin Signal Cable color 1 mLB L GY 2 mLB H YE 3 mLB GND GN 4 VDC BN 5 VDC WH In the event of an error measure voltages at the 5 pole JST plug between mLB L Pin 1 and mLB GND Pin 3 1 5 3 VDC mLB H Pin 2 and mLB GND Pin 3 1 5 3 VDC ...

Page 83: ... rail adapter Table base Table base completely assembled Plug connector 10 for marTouch Pro Pin Assignment Pin Signal 1 VDC GND 2 VDC GND 3 PE mLB GND 4 mLB H 5 mLB L 6 PE mLB GND 7 VDC 8 VDC In the event of an error measure voltages on the cable 10 between mLB L and mLB GND 1 5 3 VDC mLB H and mLB GND 1 5 3 VDC ...

Page 84: ... cable JST 5 pole 2 USB port for firmware update 3 Connection cable on the side of the light Assignment JST 5 pole Pin Signal Cable color 1 mLB L GY 2 mLB H YE 3 mLB GND GN 4 VDC BN 5 VDC WH In the event of an error measure voltages on the cable 3 between mLB L and mLB GND 1 5 3 VDC mLB H and mLB GND 1 5 3 VDC ...

Page 85: ...on cable DIP switch S1 DIP OFF ON 1 marTouch Pro light head marTouch Pro external 2 1 marTouch Pro external otherwise not relevant 2 marTouch Pro external otherwise not relevant 3 Terminating resistor not set Terminating resistor set 4 In operation always OFF Demo developer mode do not set Adapter PCB RJ45 JST 5 pole Assignment RJ45 Assignment adapter PCB RJ45 JST 5 pole Pin Signal Cable color 1 m...

Page 86: ...Revision 02 10 Description of Assemblies 10 1 Control Electronics Board 10 1 1 Design including Microfuses Fig 10 1 Control electronics board bottom view 1 Connector marTouch Pro light head 3 Power supply plug contact surfaces 2 Microfuse T 8 AL 250 V ...

Page 87: ...tive foam EMC 11 Connecting plug for light engine 1 5 DIP switch SW8 12 Connecting plug for light engine 2 6 Control panel foil connecting socket 13 Connecting plug for light engine 3 7 Reset button 14 Connecting plug for light engine 4 8 Connector for cable to D Sub connector 15 Connecting plug for light engine 5 9 Connecting plug for light engine 7 16 Connecting plug for light engine 6 ...

Page 88: ...pass functions including safety functions when the sensoGrip is removed In addition the signals and voltages listed can be measured on the plugged in service connector For this purpose plug in the marLED X measuring adapter board D Sub REF 08 670 49 04 at the light head Pin 1 13 Pin 1 5 are bridged Rear view ...

Page 89: ...between PIN Key circuit diagram upper switching level PIN 1 3 4 5 6 7 9 10 2 SW3 ESD 3 SW4 ESD 4 SW2 ESD 2 SW1 ESD 1 8 SW7 ESD 7 SW5 ESD 5 SW6 ESD 6 LED circuit diagram lower switching level PIN 2 3 4 5 6 7 8 9 1 D4 GN ESD 11 D3 GN ESD 10 D2 GN ESD 9 D1 GN ESD 8 10 D8 GN ESD 15 D7 GN ESD 14 D6 GN ESD 13 D5 GN ESD 12 ...

Page 90: ...15 Firmware of the Camera HD 00 17 01 Light head marTouch Pro 2019 05 22 Start of series delivery Firmware of the Light 00 18 01 Firmware of the marTouch Pro 00 24 15 Firmware of the Camera HD 00 17 01 marLED X v0 18 1 marTouch Pro 28 34 Light head marTouch Pro 2019 08 12 Start of series delivery surgiCam HD marLED X 01 03 02 marTouch Pro 1 0 8 surgiCam HD 01 01 01 all Light head marTouch Pro Came...

Page 91: ...f the firmware from 5 to 23 languages Firmware is not backward compatible to marTouch Pro 4 3 marLED X from FW 01 03 07 to FW 01 05 01 marTouch Pro from FW 01 00 22_HW1A04 to FW 2 0 4 surgiCam HD stays FW 02 00 03 Camera surgiCam HD Camera surgiCam 4K 2021 02 02 Introduction of surgiCam 4K Wireless Introduction of digital zoom for surgiCam HD and surgiCam 4K From this point on all surgiCam cabled ...

Page 92: ...SB connection When replacing a 4 3 marTouch Pro with a 5 marTouch Pro an FW update of the light to FW 01 05 01 must be performed all Light head marTouch Pro Camera surgiCam HD COM board Fastening the CAP square and hexagonal and ICC Change from the previously used Hilti heavy duty anchors HSL 3 G M10 20 and M12 25 uniformly to Hilti expansion dowels HST3 M12x115 40 20 The ceiling anchor plates hex...

Page 93: ...ce Manual Revision 02 93 13 marTouch Pro Access Service Admin Menu Tap the Access Service Admin Menu 1 symbol Enter the Password 4040 and confirm with check mark 2 Access Service Admin Menu Overview of functions for the service technician ...

Page 94: ...field and change the offset 100 K This balancing is performed if the measured value of the color temperature does not match the value displayed on the marTouch Pro Reset User Settings Tap the check mark to reset the user settings on all marTouch Pro devices in the system to the factory default settings This includes the created user profiles default or LTM values as well as the start up behavior F...

Page 95: ...inance Turn to the right to increase the illuminance Color temperature Switch the rotational movement of the sensoGrip to the function Change color temperature Turn to the left to reduce the color temperature Turn to the right to increase the color temperature Oval angle Switch the rotational movement of the sensoGrip to the rotation of the oval light field Camera rotation Switch the rotational mo...

Page 96: ...eturns to the normal operating state Shadow Management Adjust the sensor sensitivity of the shadow management of the selected light from 50 to 150 Service Inspection When exiting the service technician menu all documented and confirmed entries are displayed see also Exit service technician menu page 98 Tap the button Vers to display the firmware versions of all system subscribers System subscriber...

Page 97: ...high 123 Temperature Monitoring Information LightEngine hot 124 Temperature Monitoring Warning LightEngine too hot reducing light output 125 Temperature Monitoring Error LightEngine temperature limit exceeded 126 Temperature Monitoring LightEngine temperature sensor data missing 127 Temperature Monitoring Information MainBoard hot 128 Temperature Monitoring Warning MainBoard too hot reducing light...

Page 98: ...Confirm the changes made For the changes made to take effect the following entries must be made when exiting the service technician menu Enter name and confirm with check mark 2 Enter date and confirm with check mark 2 Enter comment and confirm with check mark 2 If the changes are not relevant and are not to be saved Exit the menu by tapping Abort 3 ...

Page 99: ...on the control electronics see section 5 3 1 DIP Switches for mLB Address and Terminating Resistor page 37 Functions or display of the control panel foil faulty Check the plug connection of the foil keyboard to the control electronics see section 10 2 1 Control Panel Foil Measuring Points page 89 No function on the marTouch Pro The wall control unit is supplied by the light at the lowest mounting ...

Page 100: ...rvice Center personnel or specially trained and thus duly authorized persons Danger of serious injury from electric shock Touching live components can cause a life threatening electric shock Therefore be sure to disconnect the light system all pole on the building side for any work that does not require the respective light to be in operating condition and take measures to prevent accidental recon...

Page 101: ...e Safety of Surgical Luminaires and Luminaires for Diagnosis IEC 62353 Medical electrical equipment Recurrent test and test after repair of medical electrical equipment List each terminal and accessory device in the report see Inspection plan Anything that is an add on or deviates from the standards should be included under Additional information An example of an add on would be surgiCam in the li...

Page 102: ...duction Serial number of optional accessory devices Date of production Customer Company Important information The test intervals must be observed For the inspection the additional information from the Service Manual Instructions for Use and the manuals of the components from third party manufacturers must be observed OK okay Not OK not okay N A not applicable In case of N A If the object is presen...

Page 103: ...nd the externally accessible protective conductor see Resistance measuring 3 Ω Result max 0 3 Ω Ω 3 Checking the suspension arm system OK Not OK N A a Checking and securing the fixing screws b Checking the safety sleeves spring plates c Check the locking screws LC spring arm d Checking the locking segments e Check the locking screws LC spring arm f Checking the brake screws g Checking the end stop...

Page 104: ... the spring arm 6 Checking the light functions OK Not OK N A a Checking the emergency power switch b Function test according to Instructions for Use c Checking the light field d Checking COM interface e g querying of current firmware version Firmware version e Functional check of the COM interface e g illuminance f Functional check of the COM interface e g command camera zoom in out g Checking the...

Page 105: ...es found will be corrected by Date All defects have been removed in a technically correct manner The system can be kept in service Date The customer has been informed that an inspection according to the inspection plan must be performed every 24 months by an authorized person If N A has been ticked in at least one position even though the object to be tested is present it is mandatory to indicate ...

Page 106: ... According to the manufacturer heavy duty anchors or expansion dowels may be installed only once During inspection the tightening torques thus cannot be re checked using a torque wrench During an inspection check visually and by mechanical testing as described in 1 b If the screws of the ceiling assembly are not accessible e g closed air cover the suspension arm system and the ceiling assembly can...

Page 107: ...vidually and re tightened or replaced if necessary In case of loosening of heavy duty anchors expansion dowels anchor failure the supporting structure must be completely reinstalled see Mounting Instructions ceiling anchor plate intermediate ceiling assembly Checking torques on the CAP using a counter plate Check for secure fit of all M12 locking nuts 1 using a torque wrench set to 93 Nm ...

Page 108: ...Check the tightening torques on the intermediate ceiling assembly ICA 1 Ceiling anchor plate 2 M16 fixing nuts 3 Intermediate plate Check all M16 fixing nuts 2 of the ceiling anchor plate 1 and the intermediate plate 3 for proper tightening using a torque of 195 Nm ...

Page 109: ...02 109 1 ICC 5 Spring washer 2 Intermediate plate 6 M20 nut torque 280 Nm 3 M20 M12 threaded rod 7 Lower edge of the intermediate ceiling 4 Washer Check for secure fit of all M20 locking nuts 6 on the intermediate plate 2 using a torque wrench set to 280 Nm ...

Page 110: ...lastic parts Loose parts Proper functioning and ease of movement of rotary joints Damage to the cover glass c Checking the suspension arm system for correct assembly Fig 14 1 Ceiling tube Fig 14 2 Wall bearing Check with a spirit level The ceiling tube wall bearing is correctly vertically aligned If this is not the case check the torque according to the fastening element used see also Fig 14 2 ...

Page 111: ... locking nuts using a torque wrench set to 45 Nm Replace missing parts 2 Checking potential equalization protective conductor resistance Tool required Measuring instrument e g Bender Unimet 800 ST The no load voltage shall not exceed 24 V but must not lie below 4 V either Be sure to use a suitable testing instrument for the measurement No load voltage max 24 V Test current minimum 200 mA at 500 mΩ...

Page 112: ...e measurement 2 page 113 Leakage current measurement for mobile lights with mains cable connection The manufacturer recommends using the so called equivalent measurement method according to IEC 62353 The test is conducted with the mains switch set to ON Insert the mains plug of the light into the leakage current tester Since the tester automatically powers the light during testing the light will b...

Page 113: ...tor 3 Measuring leads 6 Protective cap Remove the protective cap 6 When measuring via the external protective conductor 5 first measure the resistance between the external protective conductor 5 and the parts of the suspension arm system 4 marked in the illustration If the highest measured value Rimax is 0 3 Ω no additional measurement needs to be carried out Enter the result with the highest meas...

Page 114: ... central equipotential bonding terminal is not possible a comparative measurement can be made via indirect measurement directly on the steel thread of the central bearing shaft Subtract this value from resistance measurement 2 Measurement 2 minus measurement 3 If the result is below 0 3 Ω the protective conductor test is considered passed Rimax 0 3 Ω 1 Mains cable 4 Measuring instrument 2 Central ...

Page 115: ...Tools aids Caliper gauge flat tip screwdriver cross tip screwdriver hexagon socket Allen wrench contact spray grease e g Renolit AS threadlocker e g DELO ML 5249 a Checking and securing the fixing screws Fig 14 1 Stand tube Fig 14 2 Ceiling tube Fig 14 3 Onda Space Onda Space LC AC3000 Fig 14 4 AC2000 ...

Page 116: ...ng arm on the tracking arm If there is noticeable play apply screw lock to the M5 screws and tighten them to a torque of 6 5 Nm Check correct installation and attachment of the screws on the stand tube If there is noticeable play apply screw locks to the two M5 or three M6 screws and tighten them to a torque of 6 5 Nm or 11 5 Nm respectively Danger of injury and risk of damage from falling suspens...

Page 117: ... x 6 mm for safety sleeve 4 Spring arm socket 5 Redundant locking screw M4 x 5 mm oval head screw without washer acc to DIN 7985 OndaSpace 1 Spring arm 3 Label see below 4 Spring plate 5 M4 Phillips screws 2 pcs 2 Locking segment Check for presence of the safety sleeve and its locking or fixing screw Grease the locking segment 2 see Final steps page 121 Replace missing parts ...

Page 118: ...e screw grease here 4 Fit of brake screw Check for presence of the 2 locking screws 2 Check for correct length and suitable pin diameter of the 2 locking screws 2 Length 10 mm Ø pin 2 5 mm Measure the pin diameter on the location with the smallest diameter Grease the locking screw 2 and brake screw 3 Replace worn and missing parts Install the 2 locking screws 2 with screw lock ...

Page 119: ...cking segments Worn locking segments can cause the lighting system to fall down If the locking segment shows signs of abrasion it must be replaced Ensure that the following components are sufficiently greased during installation to avoid abrasion all locking segments on the on the contact surface 1 see Final steps page 121 the locking screws for AC2000 LC and Onda Space LC and the groove of the pi...

Page 120: ...pprox 1 mm larger If old locking segments approx 10 5 mm height 1 drill hole are still used replace them with the new locking segments height 11 8 mm 2 drill holes Make sure the locking segment has a minimum thickness of 1 9 mm Otherwise or in case of visible signs of abrasion the locking segment must be replaced Onda Space When using the Onda Space make sure the locking segment has a minimum thic...

Page 121: ...reasing page 17 Reinstall locking segment Only now is the second person allowed to let go of the suspended load Slide securing sleeve over the locking segment and attach locking screw e Check the locking screws LC spring arm Checking the bearing clearance Bearing bush spring arm to tracking arm Slide bearing cardan joint to spring arm Slide bearing TFT bracket to spring arm Replace bearings if nec...

Page 122: ...Operating Light System marLED X Service Manual 122 Revision 02 f Checking the brake screws Fig 14 5 Brake screw positions ceiling Fig 14 6 Brake screw positions wall ...

Page 123: ...se Unscrew the brake screw and check the brake pad Check the cylindrical brake pad 3 for wear If it does not sufficiently project above the center 4 of the screw 1 while the spring 2 is compressed so that it can be expected that the pad will be worn before the next check the brake screw must be replaced Slightly grease the brake bad 3 using RENOLIT AS Reattach the brake screw and adjust it Replace...

Page 124: ... carefully rotating the joints If the joint can be rotated by more than 360 no end stop is installed A correctly operating end stop limits the rotational movement without making it stiff Stiff movement of the joint is a sign of a defective end stop Replace defective end stops and adjust the replacements h Checking the spring arm setting Check the spring tension and height stop of the spring arms f...

Page 125: ...g plug in contacts in the tracking arm Contact block for lights with 3 pole rotary connector 24 36 VDC 1 2 PE GNYE 3 4 VDC RD 5 6 VDC BU 7 unassigned Contact block for lights with 5 pole rotary connector 24 36 VDC 1 2 PE GNYE 3 4 VDC RD 5 6 VDC BU 7 mLB H WH 8 mLB L BH 9 10 unassigned ...

Page 126: ...Shield BK shrink tubing 10 Pb core of BU A Bunched cable with shrink tubing Apply a little contact spray e g Cramolin Top Pin to the contact springs of the slip ring contact block while turning the tracking arm fully round 360 Check the cables at the plug in contacts for correct connection k Checking the cover panels Check all cover panels on the suspension arm system for secure attachment and abs...

Page 127: ... of wall bearing ceiling tube Ø 70 mm Check for presence and secure fit of greased disk 1 Check for secure fit of shaft locking ring 2 m Checking the rolls for damage and proper function in case of mobile lamps Check rollers for correct fit and absence of damage Check function of the locking brakes ...

Page 128: ...s and cracks b Checking the seals Visual check of all casing seals Replace casing seals if necessary c Check the sensoGrip and the control panel Check sensoGrip and control panel for damage and correct function Replace sensoGrip or control panel if necessary d Checking the cover glass Check the cover glass for absence of damage correct fit and contamination ...

Page 129: ...pension a Checking and securing the bearing assembly marView only Check bearing for play by moving the monitor up and down and rotating it If necessary remove the cover panels and check the screws of the bearing assembly for secure fit no clearance Secure loose screws replace missing screws ...

Page 130: ...eck the monitor for secure seat no play In case of play Loosen the 6 raised countersunk head screws of the cover and remove cover Check the screws and if necessary the spacer bolts for the TFT adapter plate and for the monitor for tight fit no play and apply screw locks to any loose screws Replace missing screws ...

Page 131: ... TFT FS Check the TFT bracket for secure seat on the spring arm no play In case of play Unscrew the 3 screws of the cover panel and remove the cover panel marView only Replace all screws of the bearing neck one after the other with new polyamide coated screws or apply screw locks Retighten the screws with the correct torque ...

Page 132: ...les in the TFT Duo cross arm 4 End stop groove with threaded holes for 2 end stop variants 5 Drill hole for brake screw not required 6 TFT individual suspension Check the bearing bush of the TFT suspension for tight fit no play If there is noticeable play secure the bolts and tighten them with the correct torque M5 6 5 Nm Replace worn bearing bush Pin and brake screw must be greased Replace missin...

Page 133: ...2 Plastic bearings 3 Cover panel 4 Crossbeam 5 Plastic cap 6 Screw M6 x 20 with washer and serrated washer DIN 912 Check the seat of the cross beam to the spring arm for bearing play Check the 2 screws 6 for tightness no play Secure any loose screws 6 and tighten them with a torque of 11 5 Nm If there is noticeable play replace the connection neck 1 ...

Page 134: ...as monitor camera or marTouch Pro c Checking the light field Level the light head and verify that the light produces a circular luminous field on the target surface from a distance of 1 m Light field size Check light field size function by switching from large to small and back again Color temperature Check Color temperature function moving through the options d Checking COM interface e g querying...

Page 135: ...Ec 160 klx Note down the determined value in the inspection plan h Checking the supply voltage on contact block The supply voltage measured on the contact block must be at least 24 VDC even when using maximum brightness but must not exceed 36 VDC at no load either Check voltage at no load max 36 VDC and at nominal load min 24 VDC Enter the results into the test report The nominal load test must be...

Page 136: ...899 00022 Consecutive number up to 99999 Product group marLED X 14 4 Spare Parts Notes and information on spare parts can be found in the electronic spare parts list provided to service technicians by the Martin Service Center see section 1 2 Hotline page 8 14 5 Revision Statuses Identification of the revision status is possible using the serial number SN and the manufacturing date on the rating p...

Page 137: ...ffer you to take the device back for proper disposal and recycling Marking of electric and electronic equipment in accordance with Directive 2012 19 EC WEEE Directive and the German Electrical and Electronic Equipment Act ElektroG This symbol on the product or its packaging indicates that the product may not be disposed of as normal household garbage If disposable products are used in a treatment ...

Page 138: ...Operating Light System marLED X Service Manual 138 Revision 02 ...

Page 139: ...Operating Light System marLED X Service Manual Revision 02 139 ...

Page 140: ...om Gebrüder Martin GmbH Co KG Moscow Russia Tel 7 499 792 76 19 russia klsmartin com KLS Martin Taiwan Ltd Taipei Taiwan Tel 886 2 2325 3169 taiwan klsmartin com Gebrüder Martin GmbH Co KG Dubai United Arab Emirates Tel 971 4 454 16 55 middleeast klsmartin com KLS Martin UK Ltd Reading United Kingdom Tel 44 1189 000 570 uk klsmartin com KLS Martin LP Jacksonville Florida USA Tel 1 904 641 77 46 us...

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