oki Okidata ML 320, 321 Service Manual free download

File name Okidata ML 320, 321 Service Manual.pdf

Page: 1 Service Guide ML320/ML321 Chapter 0 About This Manual ML320/ML321 Dot Matrix Printers Adobe Acrobat printable reference copy of the OKIDATA Service Training Manual. 09/17/97 Note: This Adobe Acrobat version of the Okidata Service Training Manual was built with the pictures rendered at 300 dpi, which is ideal for printing, but does not view on most displays well. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com) Table of Contents Page Service Guide ML320/ML321 0 About This Manual Front Cover 1 Manual Copyright 2 Manual Part Number and Revision 3 1 Product Specifications 1.1 General Description 4 ...1.1.02 Serial Number Identification & (A-D) Revision Levels 5 ...Compatibility Chart 6 1.2 Product Specifications 7 1.3 Paper Specifications 8 1.4 Physical Specifications 9 1.5 Power Requirements 10 1.6 Environmental Requirements 11 1.7 Agency Approvals 12 1.8 Options 13 1.9 Consumables 14 1.10 Memory Specifications 15 1.11 Reliability Specifications 16 2 Principles of Operation 2.1 Printer Overview 17 2.2 Circuit Board Description 18 ...2.2.01 Operator Panel Board 19 ...2.2.02 Power Supply 20 ...2.2.03 Control Board 21 ...Large Scale Integrated Circuitry (LSI) 22 2.3 Electrical Operation 23 ...2.3.01 Initialization 24 ...2.3.02 Interface Control 25 ...2.3.03 Print Head Drive Circuit 26