CEUS Service Manual, v2.00 English
Contents
1. Key 21 After pressing the J button again the system starts to calibrate the CEUS Pease check the function of the hammer sensors before calibrating the hammer velocity See Page 14 Kapitel Calibration Calibration steps after working on the Action If adjustments of the action or the solenoids have been done the Fine calibra tion of the keys menu Calibrate Keys and after that Balance keys menu Calibrate keypress has to be execute A The pedals are calibrated automatically together with the keys No 109 110 111 Open the menu Choose the menu item Choose the first key and push the J button The system starts to calibrate The Fine calibration of the keys has to be executed before Balance keys Then start to Calibrate hammer vel Then go to Choose the menu item level 10 of key movement The number of the key which is calibrated is shown on i During the calibration Balance keys every solenoid pushes the key smoothly to the Display Kapitel Calibration Calibrating the Pedals If only the pedals have to readjusted it is not necessary to the fine calibra tion of all the keys The Pedals can be calibrated separately Therefor start the calibration process at key 109 Make sure that the steel ropes are in the guidance channel of the pul ley Please find more information about the service menu in the CEUS User Guide2. Disendocfer DER KLANG DER BERUHRI CEUS mail boesendorfer com www boesendorfer com Contents CEUS SERVICE BASICS l llul 2 REMOVING THE HAMMER SENSOR RAIL A 3 REMOVING THE ACTIO N iasicadtsancacaysacinastesuasaapouarsadeeaencuayseatsisdeenacansussunasuesncusnpansunanyesasasnsacniaabuaansuanne 4 MOUNTING THE HAMMER SENSOR BAR 5 ADJUSTING THE SFO P aa 6 ADJUSTING THE SOLEN0IDSu u u u u u us su oaaae 7 ADJUSTING THE PEDAL SOLENOILDS 9 CEUS BOTTOM 10 ELECTRONIC CHECK 11 THE MAIN BOARD i u aaaea aeaa 14 CALIBRA TION uuu airar 15 CHANGING THE SYSTEM BATTERY OF CEUS 20 BIOS S
3. P k Adjustment plate After adjusting the pedals they have to be calibrated See chapter Calibrate page 18 Kapitel Adjusting the Pedal Solenoids CEUS Bottom View Model 280 without cover Magnets PC HDD Power supply AC inlet The power supply supplies all components with power A 48 volt line is con nected to a copper bar red arrow The copper bar supplies the solenoids with power A 5 volt line to the circuit boards a 12 volt to the PC and a second 48 volt line supply the fallboard with power The main board blue arrow is usually located next to the pc depends model The computer is connected via network cable to the central circuit board of the CEUS system The CEUS computer is a conventional PC with SSD drive and a Windows 7 operating sys tem If PC problems occur a monitor and a keyboard can be connected There is a communication box for MIDI and Internet connection at the bottom green arrow The position can be determined individually with the customer Kapitel CEUS Bottom View Electronic Check Open the service menu and go to For more information about the service menu please see the CEUS User Guide chapter Service page 42 This menu allows you to check the adjustments of the sensors the function of keys etc The following menu items are relevant for the service Sensor values In this menu the sensor value of each key can be inspected It measures
4. loosen the mounting screws and remove the back posts me re ve DC dC x lt aC Cyt ye Y gt Check the gap between magnet and key tapping the core of the magnets This step is like adjusting the capstan to the whippen of an upright No gap but also no pressure on the key Mark the keys which have a gap above the key pull out the action and set the adjustment cap of the solenoids to the correct height Use a metric flat spanner 5 and 7 to loosen the distance cap Please loose the distance cap nut of the solenoids carefully The guide rod may bend Kapitel Adjusting the Solenoids If solenoids are set too high you will notice a slight movement of the keys when pushing the action in An unequal Hammer Head line can also be caused by a high set solenoid As a control pull the core of the magnet down and keep tabs on the key If the so lenoids are set too high the key will move up A Calibrate the system after adjusting the solenoids See chapter Calibrate Kapitel Adjusting the Pedal Solenoids Tool Flat spanner metric 11 and 13 The pedals of the CEUS are moved by powerful magnets which are connected by a steel rope with the lyre bars The pedals can be adjusted like every Bosendorfer Check if the steel ropes are slightly stretched If the ropes are too loose they can be stretched by turning the adjustment plate
5. Check if the flags pass the sensors in the middle Tighten the hammer sensor bar gently and make sure that all flags pass through the middle of the light sensors After tightening the screws please make sure again that all the flags go through the center of the sensor If the flags do not pass the sensor in the middle loosen the screws slightly and move the hammer sensor bar a little Kapitel Mounting the Hammer Sensor Adjusting the Stop rail Tool Screw driver 3 o The stop rail is mounted under the whippen rail of a CEUS action It must be set so that there is a gap of 1mm between the upper edge of key and stop rail when the key is pushed down hard If you have changed the key height depth of touch check the gap of the stop before and after the operation Before a more extensive regulation of the action it is recommended to screw in the stop rail So any unwanted limit of the key movement can be prevented There are 4 adjustment screws in every section If the stop has to justed over a bigger distance please turn the screws in a little bit at a time evenly and in sequence Kapitel Adjusting the Stop rail Adjusting the Solenoids Tool Flat spanner metric 5 5 and 7 To ensure perfect reproduction the gap between solenoid and key has to be as small as possible Remove the protective covers to have free access to the So lenoids If the back posts interfere with removing the cover
6. blocked by the metal flag set free and interrupted again During this short time frame the hammer speed is meas ured Ifthe hammer sensor rail has to be removed disconnect the two white cables of the circuit board in the bass section red circle picture page 4 Pull the black interlock gently away from the connector Now the cable can be removed Kapitel Removing the Hammer Sensor Rail Remove the screws yellow circie with a PH 1x80 screw driver Lift the unscrewed hammer sensor bar the front of it and unhook it green circle Removing the Action In principle the action can be simply removed like any other BOsendorfer ac tion The CEUS action is connected by two cables blue circles to the key board Please unplug them first When you put in the action again please make sure that both ends of the cable A which connect the distribution circuit board of the action with the key sensor boards are completely connected One plug connects the distribution circuit board of the action to the key sen sors The smaller plug Irda print transfers the data information of the fallboard Kapitel Mounting the Hammer Sensor Bar Tool Screw driver PH 1x8o Re hook the hammer sensor bar and screw it slightly into the hammer rail and connect the circuit board of the bass with the other boards Insert the cable parallel and fully into the plug connection Risk of short circuit Correct Wrong A
7. chapter Service Page 42 Go to the menu Open the menu item After pushing the display shows Choose the key number 109 by pushing the Q brass button Press J and the system start to calibrate the pedals Kapitel Calibration Calibrating Lost Motion If any adjustments of the sustain pedal have been done it is necessary to cali brate the lost motion of damper Please go to the menu item Push the button Press gt the display shows Push the sustain pedal till the dampers lift off A It is easier to press the pedal by hand to detect the point of the end of lost motion Hold the position and press the lt button The display shows The calibration is completed Kapitel Calibration Change the System Battery of CEUS PC Tool Screwdriver PH 1x8o If the display shows and it is frozen an empty system battery could be the cause Try to start the PC by hand press the power button of the computer Ifthe system boots up after the manual start the battery has to be changed Disconnect the pc from the system 2 USB 2 network cables 1 power cable and demount it Change the battery Type CR2032 Kapitel Change the System Battery of CEUS PC BIOS Set Up of CEUS PC After changing the system battery the auto start function of the CEUS pc has to be set up again Therefore please connect a monitor and a keyboard to the pc Turn the pc and pres
8. the distance of the bottom edge of the keys to the light sensors The light sensor is located directly under the capstan point every key The sensors send and receive light to determine the accurate position of every key key is pressed it moves away from the sensor and the reflected light gets weaker and therefore the value is less The system does not differ between pedals and keys The pedals are listed as key 109 110 and 111 Kapitel Electronic Check If the value of the button you press does not reduce continuous or jumps sud denly to a larger or smaller value the height of the key circuit boards has to be readjusted That can be adjusted by turning the screws which are located on the bottom of the key frame Therefore the action distributor board blue arrow and the fallboard red ar row have to be connected with extra long service cables to the rim distribution board green arrow So the sensors can be adjusted by checking the values on the fallboard at the same time Since the long service cable is not commercially available we will send one to you A If needed For the fallboard please use an USB cable with A connector mini B connector Kapitel Electronic Check Sensor Values linear This menu shows the key movement in 0 250 steps If a key is pressed the value has to increase steadily going from 0 to max 250 Each time you start the CEUS the system sets
9. EI UP OF CEUS 21 Kapitel CEUS Service Basics Please read the warning notices of the CEUS user manual page 5 9 carefully Before you start working with the CEUS please be sure that the pow er switch is turned off Switch the CEUS off and wait for approximately 30 seconds before you start to disassemble the grand The fallboard can be removed without using any tools because the supply of electricity comes from the side attachment for the fallboard yellow circle The action is connected by only one cable to the CEUS system and can be removed red circle A Never plug or unplug the cable whilst the system is switched on If you have finished your work on the CEUS and the integrated display of the fallboard does not work you may have forgot to plug in the connection cable In this case switch the CEUS off wait for 30 seconds and plug the connection cable in Kapitel CEUS Service Basics Removing the Hammer Sensor Rail Tool Screwdriver PH 1x8o Make sure that the system is disconnected from power Pull the action out of the grand carefully After pulling out the action you will see the Hammer Sensor Rail On it there are the circuit boards with the soldered light sensors The flags which are mounted on the hammer shanks have to pass the light sensor exactly in the middle If the flag passes the sensor the sensor light is
10. ecuted individ ually You can start and stop the calibration process at any key except during the Balance keys calibration A Please read the instructions carefully before starting the calibration By pressing the GIS next to the grand sign the service menu can be unlocked More information about open the service menu 15 the CEUS User Guide chapter Service on page 42 Overview e Balance keys e Calibrate lost motion e Calibrate hammer vel loud e Calibrate hammer vel medium e Calibrate hammer vel soft e Calibrate hammer vel all e Manual high calibration e Manual low calibration e Manual key scanning e Manual calibration of the keys Fine calibration of the keys e Rough calibration of the keys e Define solenoid and keynumbers A The relevant calibration steps of a CEUS service are coloured black Kapitel Calibration Velocity If no extensive work has been carried out on the action a calibration of the hammer velocity is sufficient Open the menu You have the option to calibrate all 6 velocity steps at once loud medium and soft or individually A In the private field it is not essential to calibrate the hammer velocity loud Choose the menu item by pushing the brass buttons A or V until the de sired menu item appears on the display Push the brass button J and choose the first key Model 290 Key 12 Model 225 Key 17 Model 170 214
11. s the DEL button to start the BIOS menu gt Uni hip tit pV C k Onboard Device gt Superl0 Device Onboard Lan Boot ROM Hatch Dog Tiner Select Disabled Pri Enter blod gt Advanced Chipset Feature gt Integrated Peripherals gt Power Managenent Setup Set User Password gt PnP PCI Configurations Save amp Exit Setup gt PC Health Status Exit Without Saving Esc Quit a Select Iten F10 Save amp Exit Setup Onboard 10 IRQ DMA Assignnent Go to Integrated Peripherals Go to Super IO Device and press and press enter enter nboa rial Port 1 Onboard Serial Port R UART Mode Select Nort Onboard Parallel Port 378 1RQ7 Parallel Port Mod SAVE to CMOS and EXIT Y N Y PHRON After PHR F Onboard Parallel Port 3787 1RQ7 Parallel Port Mode SPP PHRON After PHR Fail 0n Go to PWRON After PWR Fail Set Y and press enter press enter set it to On and press enter By pressing F10 the set upis stored Kapitel BIOS Set Up of CEUS PC
12. this value automatically to 0 Small climatic irregularities can be resolved Hammer Head Sensors free and interrupted again During this short time frame the hammer speed is i When the flag passes the sensor the sensor light is blocked by the metal flag set measured In this menu you can check the hammer head sensors The value after the ar row is the internal velocity value which changes after every stroke The note H_ does not necessarily appear on the display If the sensor interrupted appears next to you can hear an alert For example If a constant alert sounds while this menu is open it means that a sensor is interrupted or is broken Kapitel Electronic Check The Main Board The main board is the heart of the CEUS system By using a jumper sections or the whole system can be reformatted After a circuit board change for ex ample A Do a formatting only after consulting a Bosendorfer CEUS technician Red circle Yellow circle Red arrow Blue arrow Orange arrow Green arrow WHE Jumper formatting all circuit boards except main board Jumper A Service keep service menu open Jumper C reset of the whole system Connection to pedal print Key drive unit MIDI Network to PC 5V Power inlet Kapitel The Main Board Calibration CEUS has several steps to calibrate the system which can be ex
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