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TABLE OF CONTENTS
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