Oki ML520 Service Manual page 5

Table of Contents
....4.4.04 Tips for Preventing Image Problems
....4.4.05 Common Problems
4.5 Abnormal Output - Output Samples
....Left Margin Drifting Problem
4.6 Fault Alarms
....4.6.02 ALARM/LED Display Troubleshooting Table Index
....4.6.03 ALARM/LED Display Troubleshooting Tables
4.7 Repair Analysis Procedures (Raps)
....4.7.02 RAP Index
........RAP 01 No Power Supplied to Printer
........RAP 02 No Spacing Operation
........RAP 03 Printhead Homing Error
........RAP 04 Paper Jam During Paper Loading
........RAP 05 Printhead Pins Not Firing
........RAP 06 Poor Print Quality
........RAP 07 Ribbon Feed Problem
........RAP 08 Line Feed Problem
........RAP 09 Operation Panel Malfunction
........RAP 10 Parallel Interface Problem
........RAP 11 Serial Interface Problem
4.8 Printer Tests
....4.8.02 Rolling ASCII Test
....4.8.03 Font Test
....4.8.04 Serial Interface Loopback Test
........Serial Cable Information
........Serial Interface Signal Requirements
........Commonly Used Serial Cable Configurations
....4.8.05 Hexadecimal Dump Mode
4.9 Resistance Checks
........Layout Diagram
....4.9.02 Printhead
....4.9.03 Line Feed Motor Resistance
....4.9.04 Space Motor Resistance
A Reference Charts
A.1 Overview - A.1.01 General Information
A.2 Index To Charts
........Board Layout
....A.2.01 Main Controller Board (FJIM)
....A.2.02 Operator Panel Board (LEOP)
....A.2.03 Power Supply Assembly
....A.2.04 Space Motor Board
....A.2.05 RS232-C Serial Interface Board - Option (LXHI)
B Illustrated Parts Listing
B.1 Overview - B.1.01 General Information
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