Table Of Contents - Ricoh A156 Service Manual

1. OVERALL MACHINE INFORMATION
1. SPECIFICATIONS.............................................................. 1-1
2. MACHINE CONFIGURATION............................................ 1-5
2.1 COPIER ......................................................................................1-5
2.2 OPTIONAL EQUIPMENT ...........................................................1-6
3. MECHANICAL COMPONENT LAYOUT ........................... 1-7
4. PAPER PATH ................................................................. 1-10
4.1 NORMAL COPYING ..................................................................1-10
4.2 DUPLEX COPYING .................................................................1-11
5. ELECTRICAL COMPONENT DESCRIPTIONS .............. 1-12
6. DRIVE LAYOUT ............................................................... 1-17
6.1 ALL MODELS ...........................................................................1-17
6.2 A153/A156 ...............................................................................1-18
6.3 A157/A160/A161/A162 ..............................................................1-18
2. DETAILED DESCRIPTIONS
1. PROCESS CONTROL ....................................................... 2-1
1.1 OVERVIEW..................................................................................2-1
1.1.1 Copy Process around the Drum................................................................2-1
1.1.2 Factors Affecting Process Control ...........................................................2-4
1.1.3 Process Control Procedures .....................................................................2-5
1.1.3.1 Copy Image Control ...............................................................................2-5
1.1.3.2 Image Density Control ...........................................................................2-5
1.1.3.3 Drum Potential Control...........................................................................2-5
1.2 COPY IMAGE CONTROL............................................................2-8
1.2.1 Manual ID Correction ................................................................................2-8
1.2.2 Reproduction Ratio Correction..................................................................2-9
1.2.3 ADS Correction .......................................................................................2-10
STM

Table of Contents

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Rev. 7/95
A156/A160/A162