Fault Location
Contents
1. rectly Check parameter PRINT PARAMETER gt Y Print offset or Easy Plug command ux if necessary correct Correct sensor zero line with parameter PRINT PARAMETER gt Gap offset Check and if necessary correct Check and if necessary set Check and if necessary set Check and if necessary set Tab 7 Unsatisfactory print position and the possible reasons Print quality Print faded Poor or uneven print Feed in order but no print image Printhead dirty or defective Printhead setting incorrect Ribbon and material not ali gned Ribbon possibly superimpo sed Print roller damaged or soi led Printhead setting too low Ribbon inserted incorrectly colour side Printhead not fixed to brak ket Clean or replace thermal bar Check settings e g print contrast print head resistance and alter if necessary Check ribbon type and material type if nec alter Insert new ribbon Check and if necessary clean or replace roller Check setting print contrast press Prog but ton in on line mode or parameter PRINT PARAMETER gt Print contrast and if nec correct Check and if necessary correct Fix thumb screw Tab 8 Unsatisfactory print quality and the possible reasons 03 03 Rev A 1 0 00 SERVICE MANUAL Fault Location AP 4 4 AP 5 4 Printhead defective Printhead cable not or incor rectly plugged in CPU board defective Check printhead and2. topic section Service Electronics chapter CPU board Connectors Check parameter setting only for serial inter face Select standard character set Check and if necessary replace CPU board Do not exceed cable length Tab 1 Possible faults caused by data transmission Display Display dark Button function faulty Plug connector loose Display defect CPU board defective Plug connector loose Buttons defective CPU board defective Check and if necessary plug in again Check and if necessary replace display Check and if necessary replace mainboard Check and if necessary plug in again Check and if necessary replace buttons or dis play board Check and if necessary replace mainboard Tab 2 Possible faults at the display 03 03 Rev A 1 0 00 SERVICE MANUAL Fault Location AP 4 4 AP 5 4 Gap detection Gap detection not possible Print position shifted in or against print direction Photoelectric switch defec tive Photoelectric switches set incorrectly False photoelectric switch selected Gap position not recognised consistently due to gap con tour Check with SERVICE FUNCTION gt Sensor test gt if necessary replace the photoelec tric switch Use parameter SYSTEM PARAMETER gt Sens punch LS to alter sensitivity Select Punched or Reflex using the para meter SYSTEM PARAMETER gt Light sens type Correct photoelectri
3. P 5 4 Plug in card Plug in cards are not Contacts dirty Check and if necessary replace recognised 7 7 Card defective Check and if necessary replace Card type does not corre Check and if necessary replace spond to approved type Tab 10 Possible problems with plug in cards 03 03 Rev A 1 0 00 Index C D F G Cut function cutter fault searching 6 Data transmission fault searching 2 Display fault searching 2 Fault searching general 2 Feed roller fault searching 4 Gap detection fault searching 3 SERVICE MANUAL Fault Location AP 4 4 AP 5 4 M Material transport fault searching 3 P Plug in card fault searching 7 Print image position fault searching 5 Print quality fault searching 5 R Ribbon ribbon guide fault searching 3
4. ad has stripped Check and if necessary replace the belt Check setting of print contrast press Prog button in on line mode or parameter PRINT PARAMETER gt Print contrast and if necessary correct Tab 5 Continued Possible faults caused by the ribbon guiding Print roller Wear Ink residue Deformation High running performance Printhead pressure too high Material deposits Ribbon prints directly on feed roller Printing directly on roller High running performance Power setting too high for printhead Damage by operator Replace roller Check and if necessary correct Clean the roller Clean and prevent direct printing on roller Avoid direct printing Replace roller Check print contrast setting press Prog but ton in on line mode or parameter PRINT PARAMETER gt Print contrast and if necessary correct Replace roller and draw attention to proper care Tab 6 Possible faults caused by the Print roller 03 03 Rev A 1 0 00 SERVICE MANUAL Fault Location AP 4 4 AP 5 4 Position of the print image Print position shifted in or against print direction Print shifted at right angles to document Incorrect parameter setting Gap position is recognised incorrectly due to gap con tour Material unrolling blocked or too sluggish Material guide set too nar rowly Pressure rollers positioned incorrectly or not at all Material guide not set cor
5. c switch zero line using parameter PRINT PARAMETERS gt Punch offset Tab 3 Possible faults caused by the gap detection Material transport No feed function Jolted print image Material shifts Stepper motor plug loose Stepper motor defective CPU board defective Feed button defective Material unwinder blocked Material guide set incor rectly Check and if necessary plug in Check and if necessary replace motor Check and if necessary replace mainboard Check and if necessary replace display board Check and if necessary loosen Check and if necessary set Tab 4 Possible faults caused by material transport Ribbon ribbon guide Unfounded ribbon end message Ribbon produces folds Ribbon unwind mandrel is not turned Photoelectric switch defec tive Ribbon guiding plate adju sted incorrectly Tab 5 Fix core to mandrel spring plate shift spring plate if the thread has stripped Check and if necessary replace see also parameter SERVICE FUNCTIONS gt Sensor test Check and readjust guiding plate Possible faults caused by the ribbon guiding 03 03 Rev A 1 0 00 SERVICE MANUAL Fault Location AP 4 4 AP 5 4 Ribbon is not being rolled up Ribbon tears during printing process Ribbon core slips through Toothed belt defective Printhead temperature is too high Fix core to mandrel spring plate shift spring plate if the thre
6. if necessary replace it Check and if necessary plug in again Check and if necessary replace mainboard Tab 8 Continued Unsatisfactory print quality and the possible reasons Cut function cutter No cutter function Material is only parti ally cut or not cut at all Cut next to recognised gap Cut offset to impres sion Material moves above or under cutter Cutter cuts twice Connector loose Cutter function not activated Photoelectric switch defec tive Stepper motor or output stage board defective Setting of cutter position Cutter blunt or dirty Material problem Gap detection Cutter position incorrect Unwinding too sluggish roll weighs too much Double cut programmed Plug in connector firmly Select and activate Cutter setting for para meter SYSTEM PARAMETER gt Peripheral device Check and if necessary replace switch Check and if necessary replace Check photoelectric switch or position of osci llator disc and if necessary correct Check and if necessary clean or replace Only use approved materials Check setting for parameter PRINT PARAMETER gt Cut position and if necessary correct the setting Check and if necessary set Check and if necessary correct Check setting of cut function Parameter Print Parameter gt Double Cut Tab 9 Problems possibly caused by a cutter if mounted 03 03 Rev A 1 0 00 SERVICE MANUAL Fault Location AP 4 4 A
7. q 03 03 Rev A 1 0 00 SERVICE MANUAL Fault Location AP 4 4 AP 5 4 Fault Location General information about fault location 2 Data tansmiSsSi ciecss etic ncccteete 2 DISPIAY siccsniasaientndeamianeinvenamceeemiabinin 2 Gap detection sins acta taennrcecechecsenaeccnceecwreneees 3 Material transport eee 3 Ribbon ribon guide sriesisiniiereieens 3 POM TOGT punnan 4 Position of the print image s e 5 Print GUAT sincinicdiniianmieswinaiacieonecominnmis 5 Cut function CUTTGL c0ccccccccseeseeeesceeenes 6 Puo In e eee ee 7 LOX aa A EAE 8 03 03 Rev A 1 0 00 SERVICE MANUAL Fault Location AP 4 4 AP 5 4 General information about fault location Status reports should be printed to check the mechanical and electronic function capabilities provided that no obvious no defects are evident Data transmission No or damaged data Faulty data cable Wrong interface selected Setting of transmission parameters incorrect Faulty pin assignment of the data cable Incorrect handshake signals Selection CPU board defective Permitted cable length exceeded Check if the right data cable is applied Check if parameter INTERF PARAM gt EASY PLUGINTERPRTT gt Interface is set cor rectly Check if the transmission parameters for the selected interface are set correctly not for Centronics Change or replace data cable The pin assign ment of the interfaces can be found in
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