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PF-100/120
SERVICE
MANUAL
Published in August 2011
843LF112
3LFSM062
Rev.2

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Table of Contents
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Summarization of Contents

Safety Precautions
Safety Symbols and Definitions
Explains DANGER, WARNING, CAUTION levels and common safety symbols.
Specifications
Parts Names
Identifies key components of the paper feeder with a diagram.
Machine Cross Section
Illustrates the internal paper path within the paper feeder.
Installation
Installation Environment
Specifies optimal environmental conditions for installing the paper feeder.
Unpacking and Spacer Removal
Instructions for unpacking the paper feeder and removing the cassette spacer.
Troubleshooting
Paper Misfeed Detection
Explains how the printer indicates and detects paper jams.
Self-Diagnostic Function and Codes
Explains the printer's self-diagnostic feature, indicator codes, and conversion.
Electric Problems
Troubleshooting guide for electrical issues related to paper jam detection.
Mechanical Problems
Troubleshooting guide for mechanical issues causing paper feed problems.
Assembly and Disassembly
General Assembly/Disassembly Safety
Emphasizes turning off power, handling PWBs carefully, and avoiding static.
Paper Feed Section Disassembly
Instructions for detaching and refitting the middle roller/feed bracket assembly.
Retard Roller Assembly Disassembly
Instructions for removing and refitting the retard roller assembly.
PF Main PWB Replacement
Procedures for detaching and refitting the PF main Printed Wiring Board (PWB).
Technical System Overview
Paper Feed Section Overview
Describes the function and components of the paper feeder.
Paper Feeder Block Diagram
Illustrates the communication and data flow between printer and paper feeder components.
Electrical Parts Layout
Identifies and describes the function of electrical components within the paper feeder.
PF Main PWB Block Diagram
Shows the internal connections and signals of the PF main PWB.
PF Main PWB Silk-Screen Diagram
Details the connectors, pins, signals, and voltage for the PF main PWB.
Wiring Diagram
Visual representation of the electrical connections between components.

Table of Contents