This is the COMPLETE Service Repair Manual for the OKI Microline 3390/3391 printer. It contains deep information about maintaining, assembly, disassembly and servicing your OKI Microline 3390/3391 printer.

Models Covered:
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OKI Microline 3390 printer
OKI Microline 3391 printer

The Service Manual contains detailed information, has specs, diagrams, and actual real photo illustrations, and schemes, which give you complete step-by-step operations on repair, Diagnosing, servicing, technical maintenance & troubleshooting procedures for your OKI Microline 3390/3391 printer. this manual offers full information you need for repair your OKI Microline 3390/3391 printer. the information in this manual will enable you to find trouble and to understand how to repair and maintain your machine without going into service. YOU CAN DO THE REPAIRS YOURSELF AND SAVE MONEY $$$

SERVICE REPAIR MANUAL CONTAINS:
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1. CONFIGURATION
1.1 Standard Printer Configuration
1.2 Options
2. THEORY OF OPERATION
2.1 Electrical Operation
2.1.1 Summary
2.1.2 Microprocessor and the Peripheral Circuit
2.1.3 Initialization
2.1.4 Parallel Interface Control
2.1.5 Print Control
2.1.6 SP/LF Motor Control
2.1.7 Operation Panel
2.1.8 Alarm Circuit
2.1.9 Power Supply Circuit
2.2 Mechanical Operation
2.2.1 Printhead Mechanism and Operation
2.2.2 Spacing Operation
2.2.3 Head Gap Adjusting
2.2.4 Ribbon Drive
2.2.5 Paper Feed Operation
2.2.6 Paper Detection Mechanism
2.2.7 Automatic Sheet Feed
2.2.8 Paper Park Function
3. ASSEMBLY/DISASSEMBLY
3.1 Precautions for Parts Replacement
3.2 Service Tools
3.3 Disassembly/Reassembly Procedure
3.3.1 Printhead
3.3.2 Ribbon Protector
3.3.3 Pull-up Roller Assy
3.3.4 Upper Cover Assy, Access Cover Assy and Sheet Guide Assy
3.3.5 Gear Case Assy
3.3.6 PC Connector
3.3.7 Space Motor, Guide Roller Assy
3.3.8 Space Rack
3.3.9 Carriage Cable
3.3.10 Backup Roller Holder Assy
3.3.11 Platen Assy
3.3.12 Driver Board (SRXD)
3.3.13 LF Motor
3.3.14 Operation Panel PCB (LEOP)
3.3.15 Control/Power Supply Board (SRXC)
3.3.16 Transformer Assy
3.3.17 Change Lever and Gears
3.3.18 Carriage Shaft
3.3.19 Paper Pan
3.3.20 Rear Tractor Assy
3.3.21 Rear Pressure Assy
3.3.22 Switch Lever
4. ADJUSTMENT
5. CLEANING AND LUBRICATION
5.1 Cleaning
5.2 Lubrication
6. TROUBLESHOOTING AND REPAIR
6.1 Items to Check Before Repair
6.2 Troubleshooting Table
6.3 Lamp Display
6.4 Connection Circuit Check for Printhead and SP/LF Motor
6.5 Troubleshooting Flow Chart
APPENDIX
A. PCB LAYOUT
B. SPARE PARTS LIST
C. RS-232C Serial Interface Board (OPTION)

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** Model Specification: OKI Microline 3390/3391 printer
** Language: English
** Total Pages: 148
** File Format: PDF
** Requirements: Adobe PDF Reader
** Compatible: All Versions of Windows & Mac, Linux OS, Iphone, Ipad, Android etc...

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This QUALITY manual is 100 percents COMPLETE and INTACT, no MISSING/CORRUPT pages/sections to freak you out! It also is Bookmarked and SEARCHABLE to make what you need easy to find. Complete download comes in PDF format which can work under all PC based Windows operating system and Mac also. It saves to your hard-drive and can be burned to CD-ROM. It can be viewed on any computer, as well as zoomed and printed.

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