Corghi EM8540, Technical & Service Manual

Page 1: ...EM8540 N A Cod 4 104006 1 0 del 06 05 English Technical service manual...

Page 2: ...ce Les droits de traduction de m morisation lectronique de reproductionetd adaptationcompl teoupartiellepartout typedemoyen ycomprismicro lmsetcopiesphotostatiques sont r serv s Les informations fourn...

Page 3: ...AMS 7 REMOVING THE WEIGHT HOLDER LID 7 MBE161 MOTHERBOARD UPDATES 7 REPLACING THE INSIDE SENSOR DISTANCE AND DIAMETER REED MICROSWITCH AND ENCODERS 7 Replacing and adjusting the reed microswitch 7 Che...

Page 4: ...g environments allows three different operators to work at the same time Selecting the program results in the machine displaying message 1 2 or 3 on the RH display message OP operator on the LH displa...

Page 5: ...nd the service environment press F 91 Cancel reset display of the first gram of unbalance rounding to the nearest inch of the diameter and width measured with the automatic sensors Selecting the progr...

Page 6: ...expressed in encoder marks integer part and eighths of a mark decimal part each mark corresponds to approximately 1 4 degrees Press Enter to display the result of the disk calibration procedure To exi...

Page 7: ...the pulses measured by the search circuit board are totaled On termination of the spin cycle the LH display shows the expected count 384 and RH display flashes the actual total These values are displa...

Page 8: ...which shows the position in marks of the electrical actuator on the RH display The program enables moving the actuator to the spin or brake position with the START STOP buttons respectively moving the...

Page 9: ...eight holder lid MBE161 MOTHERBOARD UPDATES A portable programmer PRG161 is required to update the control unit MBU of the MBE161 motherboard The firmware is stored in a special memory card MEMSTICK w...

Page 10: ...above checks do not reveal any defects replace the encoder Checking the operation of the distance sensor d Check that the total stroke is 490 10 marks If the sensor does not read correctly check in s...

Page 11: ...ng the outside sensor cover and remove it Disconnect the potentiometer cable Disengage the spring from the eye ring on the potentiometer mount plate Undo the bolts securing the potentiometer mount pla...

Page 12: ...outside sensor standby position reference value is not 5 1 marks use function 98 to check or the outside sensor is not in the standby position 2 Check that the outside sensor connector is connected t...

Page 13: ...RAL UNIT After making sure that the unit is really the cause of the machine s malfunctions replace it as described below Remove the weight holder lid Remove the search circuit board complete with moun...

Page 14: ...block of the new actuator C is located 27 mm away from the stop D Fit the new actuator positioning its various components in the sequence shown in the figure Apply medium strength threadlocker loctite...

Page 15: ...w the M6 locknut D Extract the pin and recover the Belleville washers Fit the new brake shoe with the washers removed in the previous step Tighten down the locknut on the fulcrum pin so that there is...

Page 16: ...the small pulley C Unscrew the four bolts securing the motor to its mount D Remove the motor and recover the connecting rod assembly spacers F Before installing the new motor fit the inside circlip to...

Page 17: ...power board have lit up to indicate that the power phases are available We give a summary troubleshooting table below with reference to the general wiring diagram The machine does not switch on Use a...

Page 18: ...roximately 28 Volt the condition of the spin motor If the above checks do not identify any defective components replace the motherboard When the machine is switched on the display reads ttt Switch off...

Page 19: ...kups are correctly tightened with reference to the signal values displayed with service program 96 check the operation of the motherboard by replacing it with a new one If the above checks do not reve...

Page 20: ...perly fitted the operation of the power and control board and especially the power voltages available at the Jalsk connector refer to the attached wiring diagram for the board that the motor power cab...

Page 21: ...f the reed microswitch which indicates the standby position of the distance and diameter sensors are open Check that the sensor is in its standby position With the sensor at standby check that the mic...

Page 22: ...the motor power lead is connected correctly check the operation of the Peal board check the operation of the motor ERR31 Optimization procedure already started by another user ERR32 The balancing mac...

Page 23: ...21 during the spin cycle CCC This message appears when the unbalance values are excessive or when the balancing machine has been jolted during the reading stage...

Page 24: ...I UPT Cod 4 104006 1 0 06 05 Cod 4 104006 1 0 del 06 05 CORGHI S p A Strada Statale 468 n 9 42015 CORREGGIO R E ITALY Tel 39 0522 639 111 Fax 39 0522 639 150 www corghi com info corghi com EM8540 N A...