Avery Weigh-Tronix WP-250 Service Manual
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Avery Weigh-Tronix WP-250 Service Manual

Avery Weigh-Tronix WP-250 Service Manual

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WP-250 Ticket Printer
Service Manual

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Summary of Contents for Avery Weigh-Tronix WP-250

  • Page 1 WP-250 Ticket Printer Service Manual...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS WP-250 Service Manual ................1 General Maintenance ................1 Ribbon Replacement ................1 Removing Old Ribbon ..............1 Installing New Ribbon ..............1 Description and Location of Major Components ......... 2 Time and Date Option ................2 Installing Time and Date Option ............

  • Page 3: Wp-250 Service Manual

    WP-250 Service Manual The WP-250 Ticket Printer is designed to operate with a minimal amount of General regular maintenance. However, it is important that the printer remain clean Maintenance during operation. The most critical part to be kept clean is the head shaft. The shaft should be cleaned and fresh lubricant lightly applied two or three times a year.

  • Page 4: Description And Location Of Major Components

    Installing Time and the WP-250, the option was probably purchased and installed before the Date Option unit was shipped. If you purchased the WP-250 without the options, it can be easily installed: 1. Unplug the printer from the wall outlet.

  • Page 5: Bcd Interface Option

    The BCD Option is used to interface electronic weigh scales that have only BCD Interface Option a BCD type interface. Parallel BCD is not a general data interface and does not use the ASCII control codes. It is a numeric interface meant to obtain the weight, units, and motion indication from electronic weigh scales.

  • Page 6: Installing Bcd Interface Option

    Installing The BCD the WP-250, the option was probably purchased and installed at the Interface Option factory. If you purchased the WP-250 without the option, it can be easily installed. 1. Unplug the printer from the wall outlet. 2. Program the 8 Position DIP Switch in the BCD Module.

  • Page 7: Serial Interfacing

    + RS-485 - RS-485 Current Loop The 20 mA Current Loop, which is standard in the WP-250, is a good interface for systems that will require long distances between the host device and the printer. Data is sent between the transmitter and receiver as a series of pulses.

  • Page 8: Pulse Input

    It does not matter which side is passive and which is active as long as there is only one of each. The WP-250 has the hardware needed to be the passive side of the 20 mA interface for the receive loop.

  • Page 9: Missing Dot Troubleshooting

    Missing dots are caused by 1 or more of the following: Missing Dot Troubleshooting 1. Broken needle 2. Blown transistor 3. Blown drive diode 4. Blown fuse The table below lists the dot driver components in order of dot position. If a dot is missing, check ALL of the dot driver components for the missing dot.

  • Page 10: Print Head Mechanism Replacement/Alignment Procedure

    Print Head Mechanism Replacement/Alignment Procedure 1. Remove power from the printer, then remove the ribbon. Removal of Print Head 2. While looking at the printer from the front, loosen the two screws on Carrier Assembly the left side of the print head assembly, then remove the two screws on the right side.

  • Page 11: Replacement Of Assembly

    Replacement of Assembly 1. Replace the dot head unit on the print head carrier assembly as follows: 1a. Screw the dot head unit together with the ribbon guide assembly (B) to the print head carrier assembly. Tighten the screws. CPW: M4 x 8 (2 pieces metric) 1b.

  • Page 12: Time And Date Pc Board

    Time and Date Board W-T P/N 45009-1004 BCD Board...

  • Page 13: Main Pc Board

    Main PC Board W-T P/N 45009-1087...
  • Page 14 Weigh-Tronix 1000 Armstrong Dr. Fairmont, MN 56031 USA Telephone: 507-238-4461 Facsimile: 507-238-4195 e-mail: industrial@weigh-tronix.com www.weigh-tronix.com Weigh-Tronix Canada, ULC 217 Brunswick Blvd. Pointe Claire, QC H9R 4R7 Canada Telephone: 514-695-0380 Facsimile: 514-695-6820 Weighing Products & Systems Weigh Bar ® is a registered trademark of Weigh-Tronix Inc. 04/17/00 WP205SER.P65 PN 29549-0015e1 Printed in USA...

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