Table of Contents Page........Space Motor Assembly 83........Tractor Feed Assembly 843.6 Shipping Instructions 85....3.6.02 All Other Returns 864 Failure & Repair Analysis4.1 Failure & Repair Analysis - Introduction 87....4.1.02 Printer Serial Number Identification 884.2 Reporting Problems 89....4.2.02 Problem Lists 90....4.2.03 Reporting Methods 914.3 Troubleshooting Updates 924.4 Troubleshooting Tips 93....4.4.02 Problem Categories 94....4.4.03 START HERE Flowchart 95....4.4.04 Tips for Preventing Image Problems 96....4.4.05 Common Problems 974.5 Abnormal Output 984.6 Fault Alarms 994.7 Repair Analysis Procedures (RAPS) 100....4.7.02 RAP Index 101........RAP 01: Power Lamp Does Not Light 102........RAP 02: Spacing Error 103........RAP 03: Head Homing Error 104........RAP 04: Bail Homing Error 105........RAP 05: Ribbon Feed Problem 106........RAP 06: Wrong Character, Character Omission or DotOmission107........RAP 07: Line Feed Problem 108........RAP 08: Malfunction of Operator Panel Switch 109........RAP 09: Data Receiving Failure 110........RAP 10: ALARM Lamp ON 111........RAP 11: Bottom Tractor Feed Unit (BTFU) Problem 1124.8 Printer Tests - Rolling Ascii Test 113....4.8.02 Font Sample Test 114........Sample - Part 1 115........Sample - Part 2 116....4.8.03 Serial Interface Diagnostic 117....4.8.04 Hexadecimal Dump 1184.9 Resistance Checks 119....4.9.02 Printhead 120....4.9.03 Line Feed Motor 121....4.9.04 Space Motor 122....4.9.05 Bail Motor 123A Board Diagrams