NCR 7193 Service Manual

7193 Service Guide August 1998 46 Disassembling the Print Mechanism The following subassemblies and parts may be removed from the print mechanism for service or replacement: • Printhead • Knife assembly and motor (on knife unit) • Paper feed motor • Switches for sensors (paper out, knife home, and cover open). Removing the Knife Assembly 1. Using a 1½ mm hex driver, remove the set screw from the top of the knife drive arm. See the illustration. 2. Carefully pry off the slotted drive arm, separating it from the rotating blade. Take ...

Contents August 1998 vii Contents Chapter 1: About the 7193 Printer 1 Models ........................................................................................................................................ 1 Communication Interfaces................................................................................................ 1 Features ...................................................................................................................................... 2 Options ........................................................................................ ...

Chapter 2: Installing the Printer August 1998 19 Mounting the Power Supply on a Wall The power supply comes with a wall-mount kit to mount the power supply on the wall or under a table. See “Appendix B: Ordering Paper and Supplies” for information on ordering the power supply and wall-mount kit. The kit contains a holder and screws with plastic anchors. Be sure there are no hidden wires or other obstructions in the wall where you mount the power supply. You will need a 1/4 inch drill bit and either a Phillips or standard screwdriver (screws are combination Phillips and p ...

Appendix A: Specifications August 1998 55 Appendix A: Specifications Features Interfaces RS-232C, Parallel, LCSIO Version of RS-485 Memory/Firmware 16K RAM (available for downloadable character sets and bit- mapped graphics) History EEROM 4K Buffer (RS-232C and Parallel) Resident character sets PC Code Page 437 (US) PC Code Page 850 (Multilingual) Integrated bar codes Code 39, UPC-A, UPC-E, JAN8 (EAN), JAN13 (EAN), Interleaved 2 of 5, Codabar, Code 128 Options Knife Power Supply (separate in-line power supply for models not receiving power from host) Wall-Mount Kit Cash Draw ...

7193 Service Guide August 1998 62 Knife Switch Kit 189-9940610 Micro Switch Screw Printhead Kit (Speed) 189-9940850 Printhead Screw Small Parts Kit 189-9940618 Left Knife Support Right Knife Support Knife Drive Arm Intermediate Gears Drive Gear (Knife) Grip Ring Ground Strap Screws Hardware Kit 189-9940619 Jack Cover Ground Strap Screws ...

7193 Service Guide August 1998 38 time, cleaning the printhead with cotton swabs and rubbing alcohol will not be of much benefit. See “Appendix B: Ordering Paper and Supplies” for the recommended paper grades. ...

7193 Service Guide August 1998 58 Density of Receipt Print Lines When the 7193 prints high density print lines (text or graphics), it automatically slows down to a rate slower than 600 lines per minute. High density print lines are defined as lines with over 57% of the dots printing on the line (there are 448 total dot columns on the print station). Duty Cycle Restrictions (Printing Solid Blocks) There are restrictions on the duty cycle because of the heat generated by the receipt thermal printhead when printing solid blocks (regardless of the length of the block in ...

7193 Service Guide August 1998 10 LCSIO (RS-485) Switch Settings For printers using the LCSIO (RS-485) interface, the DIP switches are used to set the LCSIO (RS-485) address bits as shown in the following table. DIP Switch 1 (Set to Off when setting address bits) Off = LCSIO (RS-485) Communication, On-line Mode (Default) On = Level 1 Diagnostics: Setup Mode DIP Switch 2 is always Off Address w/Parity Address w/o Parity Switch 3 Switch 4 Switch 5 Switch 6 3C BC Off Off Off Off 3D 3D Off Off Off On 3E 3E Off Off On Off 3F BF Off Off On On 40 40 Off On Off Off 41 ...