CAB A Series Service Manual
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CAB A Series Service Manual

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Label Printer
A +
The Premium Class.

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Summary of Contents for CAB A Series

  • Page 1 Service Manual Label Printer The Premium Class.
  • Page 2 Microsoft Corporation. TrueType is a registered trademark of Apple Computer, Inc. Editor Regarding questions or comments please contact cab Produkt- technik GmbH & Co. KG. Topicality Due to the constant further development of our products discrep- ancies between documentation and product can occur.

  • Page 3: Table Of Contents

    Table of Contents Important Information ..........................4 General Safety Instructions ........................4 Protective Devices ........................... 4 Handling Electricity ..........................5 Procedure in Case of Accidents ......................5 Cleaning ..............................6 Cleaning by the Operator ......................... 6 Cleaning the Label Sensor A6+, A8+ ....................... 6 Cleaning the Label Sensor A4+M ......................

  • Page 4: Important Information

    Important Information General Safety Instructions This service manual is intended for use by qualified service and maintenance personnel. For more operation and configuration information, refer to the user or configuration manual. Follow the general safety rules below: • Keep the area around the device clean at all times! •...

  • Page 5: Handling Electricity

    Important Information Handling Electricity The following work may only be done by trained and qualified electricians: • Work on electrical components. • Work on an open device still connected to the mains supply. General precautions before starting maintenance work: • Find out where the emergency and power switches are so that they can be quickly thrown in an emergency.

  • Page 6: Cleaning

    Cleaning Cleaning by the Operator The following cleaning work is described in the “Operator's Manual“: • cleaning the device • cleaning the printhead • cleaning the print roller • cleaning the label sensor A2+ A4+ Cleaning the Label Sensor A6+, A8+ Fig.

  • Page 7: Cleaning The Label Sensor A4+M

    Cleaning Cleaning the Label Sensor A4+M Fig. 2 Cleaning the label sensor A4+M Danger! Risk of death via electric shock!  Before opening the housing cover, disconnect the device from the mains supply and wait at lease one minute until the power supply unit has discharged. Remove media from the printer.

  • Page 8: Replacing Assembly Units

    Do not use any worn of damaged tools.  Only use tools and testing devices that are suitable for the task at hand. cab special tools: • Test collar for transfer ribbon winder (cab item number: 5534199) Standard tools: • Phillips-head screwdriver, size 1 •...

  • Page 9: Replacing The Printhead

    Replacing Assembly Units Replacing the Printhead ..1 Replacing the Printhead A+, A4+, A4.+, A4+M The printhead of the label printer can be replaced without the need for fine adjustment. The printhead must be replaced if worn or when switching to a printhead with higher or lower resolution. For better differentiation, the print heads have a label stating the printer type and resolution.

  • Page 10: Replacing The Printhead A2+, A4+, A4.3+, A4+M

    Replacing Assembly Units Removing the printhead Turn lever (10) counterclockwise to lift the printhead. Remove labels and transfer ribbon from the printer. Remove Allen key (11) from its retainer. Lightly keep printhead mounting bracket (9) on the print roller with one finger and screw out screw (8) with the Allen key and remove it and the washer.
  • Page 11 Replacing Assembly Units Fig. 7 Removing and installing the printhead A6+, A8+ Removing the printhead Turn lever (8) counterclockwise to lift the printhead. Remove labels and transfer ribbon from the printer. Remove Allen key (9) from its retainer. Lightly keep printhead mounting bracket (7) on the print roller with one finger and loosen screws (6) with the Allen key.

  • Page 12: Replacing The Print Roller And Rewind Assist Roller

    Replacing Assembly Units Replacing the Print Roller and Rewind Assist Roller Removing the side plate Turn lever (1) counterclockwise to lift the printhead. Lift the pinch roller (5) off the rewind assist roller. Remove labels and transfer ribbon from the printer.

  • Page 13: Replacing The Slipping Clutches

    Replacing Assembly Units Replacing the Slipping Clutches The rewinder for the transfer ribbon and the internal rewinder are coupled to slipping clutches in the main drive. The supply hub of the transfer ribbon is braked with a slipping clutch during printing. Change the slipping clutch when it can no longer be set ...
  • Page 14 Replacing Assembly Units Installing the slipping clutch on the rewinders 4 Snap ring 5 Slipping clutch 6 Coupling disks 7 Winder axis 8 Collar of the belt wheel Fig. 12 Slipping clutch on the rewinders Slide coupling (5) onto the winder axis (7). Align grooves in the coupling disks (6) with the guides in the collar of the belt wheel (8).

  • Page 15: Replacing The Label Sensor

    Replacing Assembly Units Replacing the Label Sensor Notice! Soiling of the label sensor can also cause malfunctions. Before replacing the label sensor, check whether it is soiled and clean it if necessary.. For A+, A4+, A4.+  Operator's Manual, for A6+, A8+  . on page 6. Danger! Risk of death via electric shock! ...

  • Page 16: Replacing Label Sensor A4+M

    Replacing Assembly Units .6. Replacing Label Sensor A4+M Fig. 15 Replacing the label sensor A4+M Danger! Risk of death via electric shock!  Before opening the housing cover, disconnect the device from the mains supply and wait at lease one minute until the power supply unit has discharged.

  • Page 17: Replacing The Pcb Cpu

    Replacing Assembly Units Replacing the PCB CPU Danger! Risk of death via electric shock!  Before opening the housing cover, disconnect the device from the mains supply and wait at lease one minute until the power supply unit has discharged. Removing the PCB CPU If possible, save the printer configuration to a Compact- Flash card ...

  • Page 18: Replacing The Power Supply Unit

    Replacing Assembly Units Replacing the Power Supply Unit Danger! Risk of death via electric shock!  Before opening the housing cover, disconnect the device from the mains supply and wait at lease one minute until the power supply unit has discharged. Removing the power supply unit Unplug the printer from the electrical outlet.

  • Page 19: Adjustments

    Adjustments Measuring and Adjusting the Winding Torques The rewinder for the transfer ribbon and the internal rewinder are coupled to slipping clutches in the main drive. The supply hub of the transfer ribbon is braked with a slipping clutch during printing. The correct setting of the torques of these slipping clutches is necessary for: •...
  • Page 20 Adjustments The set values for the winding torque and the resulting pulling force at the test collar are: Slipping clutch on Direction of rotation Printer Winding torque M Pulling force F Ribbon take up hub clockwise 10.2 - 10.8 Ncm 3.4 - 3.6 N A4+, A4.3+, A6+ 13.5 - 14.4 Ncm...
  • Page 21 Adjustments Internal rewinder Measurement of the winding torque at the internal rewinder occurs by determining the pulling forces with a cord wrapped around the rewinder. The physical relation between the torque and the pulling force is: F= M / r Pulling force [N], Winding torque [Ncm], Radius of the internal rewinder (20 mm)

  • Page 22: Adjusting The Winding Torques

    Adjustments 4.1. Adjusting the Winding Torques The winding torque of a winder can be changed at the knurled ring of the respective slipping clutch. The numbers on the knurled ring stand for the value of the winding torque: • 1: Lowest winding torque •...

  • Page 23: Adjusting The Printing Mechanism

    Adjustments Adjusting the Printing Mechanism Major adjustment of the printing mechanism beyond format-based settings is only required if the printhead assembly has been removed or parts in this area have been replaced. Excluded from this is the replacement of the printhead, after which readjustment is generally not required.

  • Page 24: Adjusting The Printhead Position

    Adjustments 4.. Adjusting the Printhead Position In order to achieve the best possible print image the following printhead settings are necessary: • Align the heating line with the highest point of the print roller. Density of the print image is the greatest at this point.

  • Page 25: Adjusting The Printhead Pressure

    Adjustments 4.. Adjusting the Printhead Pressure The printhead pressure can be changed with the screws (1a) and (1b) at the inside and outside of the printhead. Increasing the head contact pressure leads to an improvement of the print image density on the corresponding side and to a shifting of the ribbon feed path in the corresponding direction.

  • Page 26: Adjusting The Transfer Ribbon Feed Path

     Recheck the setting with the test function Test grid ( Configuration Manual) or a similar print pattern.  When using standard cab media, the test printout must show lines with sharp contours and black areas without any parts missing.

  • Page 27: Adjusting The Belt Tension At The Main Drive Motor

    Adjustments Adjusting the Belt Tension at the Main Drive Motor Danger! Risk of death via electric shock!  Before opening the housing cover, disconnect the device from the mains supply and wait at lease one minute until the power supply unit has discharged. Attention! The toothed belt could be damaged if adjustment is carried out improperly.

  • Page 28: Adjusting The Head Switch

    Adjustments Adjusting the Head Switch The head switch prevents printing from occurring when the printhead is open. Adjust the head switch if the error message Head open appears in the display even though the printhead is locked. Danger! Risk of death via electric shock! ...

  • Page 29: Troubleshooting And Error Treatment

    Troubleshooting and Error Treatment Failure of Device Functions Functional error Possible remedy Medium is not transported Check electrical connections between PCB CPU and motor Check drive mechanism Replace the PCB CPU Replace the motor No print image with medium Check plug connections at the printhead transport Examine printhead cable for damage and replace if necessary Replace the printhead...

  • Page 30: Hardware Faults

    Troubleshooting and Error Treatment Hardware Faults Error message Cause Fault recovery ADC malfunction Fault on the PCB CPU Replace the PCB CPU FPGA malfunction Fault on the PCB CPU Replace the PCB CPU Invalid setup Fault on the PCB CPU Replace the PCB CPU Voltage error Voltage of the battery on the...

  • Page 31: Block Diagram

    Block Diagram Printer Type Nr. 1 Nr.  Nr.  Nr. 4 Nr. 5 Nr. 6 5954105 5954293 5954292 5946203 5954098 5954090 200, 200P 5954081 5954067 5954066 5946206 5954098 5954090 300, 300P 5954072 5954067 5954066 5946206 5954098 5954090 300M 5954072 5954067 5954066 5946208...

  • Page 32: Layout Diagram Pcb Cpu

    Layout Diagram PCB CPU Fig. 29 Layout diagram PCB CPU - components side...
  • Page 33 Layout Diagram PCB CPU Fig. 30 Layout diagram PCB CPU - soldering side...

  • Page 34: Index

    Index Adjusting the belt tension ....27 Slipping clutch replacing ........13 Adjusting the head switch ....28 winding torque ......20 Adjusting the printhead position ..24 Adjusting the printhead pressure ..25 Adjusting the printing mechanism..23 Tools ...........8 Adjusting the ribbon feed path ..26 Torque.........19, 21 Transfer ribbon hubs winding torque ......20...

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