'Di251/Di351 Service Manual' by Nieland - Page 1 of 362

D

i251 / Di351

SERVICE MANUAL

[GENERAL]

4011-7990-11

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Di251 / Di315 SERVICE MANUAL

1. SAFETY INFORMATION

2. SPECIFICATION

3. PRECAUTIONS FOR INSTALLATION

3-1. Installation Site

3-2. Power Source

4. PRECAUTIONS FOR USE

4-1. To ensure that the copier is used in an optimum condition

4-2. Operating Environment

4-3. Power Requirements

5. HANDLING OF CONSUMABLES

6. OTHER PRECAUTIONS

7. SYSTEM OPTIONS

MECHANICAL/ ELECTRICAL

1. CROSS-SECTIONAL VIEW

2. COPYING PROCESS

3. DRIVE SYSTEM

4. OPERATING SEQUENCE

5. CPU OVERRUN MONITOR FUNCTION

5-1. Processing Performed during Watchdog Function

6. IMAGE STABILIZATION SYSTEM

7. IMAGING CARTRIDGE (I/C)

7-1. I/C Drive Mechanism

7-2. Identification and Life of I/C

8-1. Grounding of the PC Drum

9. DRUM CHARGING

10-1. Construction of the Exposure Section

10-2. Image Processing Flow

10-3. Scanner and 2nd/3rd Mirrors Carriage Moving Mechanism

11. ORIGINAL SIZE DETECTING SYSTEM

11-1. Original Size Detecting Operation

11-2. Original Size Detection

11-3. Original Size Detection Timing

12-1. Laser Emission Timing

13. DEVELOPING UNIT

13-1. Sleeve/Magnet Roller

13-2. Developing Bias

13-3. ATDC Sensor

13-4. Toner Bottle Home Position Detection Mechanism

13-5. Toner Bottle Vibration Mechanism

13-6. Main Hopper Toner Replenishing Mechanism

13-7. Sub Hopper Toner Replenishing Mechanism

13-8. Sub Hopper Toner Empty Detection Control

14. PAPER TAKE-UP/FEED SECTION

14-1. 1st Drawer-in-Position Detection

14-2. 1st Drawer Paper Empty Detection

14-3. 1st Drawer Paper Near-Empty Detection

14-4. 1st Drawer Paper Lifting Plate

14-5. 1st Drawer Paper Size Detection

14-6. Drawer Paper Take-Up Mechanism

14-7. Drawer Paper Take-Up Control

15. MANUAL BYPASS TRAY

15-1. Manual Bypass Paper Take-Up Control

15-2. Manual Bypass Paper Empty Detection

16. SYNCHRONIZING ROLLERS

16-1. Paper Dust Remover

16-2. Synchronizing Roller Drive Mechanism

17. IMAGE TRANSFER AND PAPER SEPARATION

17-1. PC Drum Paper Separator Fingers

18. PC DRUM CLEANING

20. FUSING UNIT

20-1. Fusing Unit Drive Mechanism

20-2. Fusing Temperature Control

20-3. CPM Control

21. PAPER EXIT UNIT

22. OTHER UNITS AND MECHANISMS

22-1. Memory Backup

22-2. Flash Memory

22-3. Interior Cooling Mechanism

Safety Precautions for Inspection and Service

Other Precautions

Precautions for Service

Used Batteries Precautions

Precautions Before Service

How to Use this Book

Precautions for Service

Precautions for Dis/Reassembly

Precautions for Circuit Inspection

Handling of PWBs

Handling of Other Parts

Handling of the PC Drum

Handling of the Imaging Cartridge

1.1 INSTALLATION IMAGING UNIT

1.1.1 Unpacking

1.1.2 Imaging Unit Installation

1.1.3 When removing the imaging unit

1.2 INSTALLATION THE COPY TABLE/COPY DESK (CT-2/ CD-2M)

1.2.1 Unpacking the Copy Table

1.2.2 Unpacking the Copy Desk

1.2.3 Installing the Copy Table/Copy Desk

1.2.4 Adjusting the Adjusters

1.2.5 Attaching the paper feed unit to the copy table

1.2.6 Attaching the paper feed unit to the copy desk

1.3 INSTALLATION JS-100

1.3.1 Unpacking

1.3.2 Installing the Third Tray

1.4 INSTALLATION JS-201

1.4.1 Unpacking

1.4.2 Job tray installation

1.4.3 Copy Tray Set-up

1.5 INSTALLATION OT-102 (Shift Tray)

1.5.1 Unpacking

1.5.2 Shift Tray Installation

1.5.3 Copy Tray Setting-up

1.6 INSTALLATION AD-15

1.6.1 Unpacking

1.6.2 Automatic Duplex Unit Setting-up

1.6.3 Switching the tension strength of the automatic duplex unit wire

1.6.4 Reference Gap Adjustment

1.7 INSTALLATION AF-9

1.7.1 Unpacking

1.7.2 Installing ADF Kit

1.7.3 Components

1.7.4 Installation

1.7.5 Checking for Zoom Adjust

1.7.6 Registration Adjustment

1.7.7 Checking for Registration

1.7.8 Registration Adjustment

1.8 INSTALLATION AFR-17

1.8.1 Unpacking

1.8.2 Installing

1.8.3 Checking and adjusting the skewed feeding

1.8.4 Checking and adjusting the document stop position in the 1-side original mode

1.8.5 Checking and adjusting the document stop position in the 2-sided original mode

1.8.6 Checking the Document Stop Position

1.8.7 Adjusting the Document Stop Position

1.8.8 Adjusting the Document Stop Position

1.8.9 Checking and adjusting the document stop position in the single&&#@;B&´c&?

1.8.10 Checking the Document Stop Position

1.8.11 Adjusting the Document Stop Position

1.8.12 Checking and adjusting the position of the rear guide plate

1.8.13 Checking the Position of the Rear Guide Plate

1.8.14 Adjusting the Position of the Rear Guide Plate

1.8.15 Checking and adjusting the position of the guide plate in the sA&&TV&&&&c&2!&

1.8.16 Checking the Position of the Single Feed Copy

1.8.17 Adjusting the Position of the Single Feed Copy

1.8.18 Securing the stoppers

1.9 INSTALLATION FN-109 / FN-110

1.9.1 Unpacking the Finisher

1.9.2 Installing the Accessories

1.9.3 Installing the Horizontal Transport Unit

1.9.4 Adjusting the Height and Tilt of the Finisher

1.9.5 Connecting the Hookup Cord

1.9.6 Installing the Tray and Protective Guide

1.9.7 Affixing the Labels

1.9.8 Checking the Hole-Punching Positions (FN-109 only)

1.9.9 Adjusting the Hole-Punching Positions (FN-109 only)

1.9.10 Removing the Rail

1.10 INSTALLATION FN-504

1.10.1 Unpacking

1.10.2 Attaching the Finisher set pin

1.10.3 Attaching the pipe

1.10.4 How to remove the pipe

1.10.5 Installing the transport unit

1.10.6 Adjusting the height of the Finisher

1.10.7 Connecting the cable

1.10.8 Attaching the labels

1.10.9 Adjusting the placement of the punch hole

1.10.10 Attaching the holder for the instruction manual

1.11 INSTALLATION PF-117

1.11.1 Unpacking

1.11.2 Stopper Installation

1.11.3 Support Adjustment

1.11.4 Cabinet Setup

1.11.5 Paper Size Setting

1.11.6 Attaching the paper size label

1.11.7 Registration Adjustment

1.12 INSTALLATION PF-118 / PF-119

1.12.1 Unpacking

1.12.2 Installation to the Copier

1.12.3 Connecting the Paper Feed Unit to the Copier

1.12.4 Connecting the Paper Feed Unit to the Paper Feed Unit

1.12.5 Changing the Paper Size of the Paper Feed Unit

1.12.6 Changing the Paper Size of the Paper Feed Unit (Fixed Cassette)

1.12.7 Paper Size Input for the Fixed Cassette

1.12.8 Affixing the Labels

1.12.9 Adjust the Paper Reference Position

DIS/REASSEMBLY, ADJUSTMENT

1. SERVICE INSTRUCTIONS

1-1. IDENTIFICATION OF FUSES AND CIRCUIT BREAKERS

1-2. PRECAUTIONS FOR HANDLING THE LASER EQUIPMENT

1-3. PARTS WHICH MUST NOT BE TOUCHED

2. DISASSEMBLY/REASSEMBLY

2-1. DOORS, COVERS, AND EXTERIOR PARTS: IDENTIFICATION AND REMOVAL PROCEDURES

2-2. REMOVAL OF CIRCUIT BOARDS AND OTHER ELECTRICAL COMPOMENTS

2-3. MAINTENANCE SCHEDULE

2-4. PAPER TAKE-UP/TRANSPORT SECTION

2-5. OPTICAL SECTION

2-6. IMAGE TRANSFER SECTION

2-7. DEVELOPING SECTION

2-8. FUSING SECTION

3-1. ADJUSTMENT JIGS AND TOOLS USED

3-2. ADJUSTMENT REQUIREMENT LIST

3-3. ADJUSTMENT ITEMS LIST

3-4. ADJUSTMENT OF SCANNER MOTOR TIMING BELT TENSION

3-5. ELECTRICAL/IMAGE ADJUSTMENT

3-6. FOCUS-POSITIONING OF THE SCANNER AND 2ND/3RD MIRRORS CARRIAGE

4. MISCELLANEOUS

4-1. INSTALLATION OF THE KEY COUNTER SOCKET (OPTION)

4-2. REMOUNTING THE EEPROM (IC3A)

4-3. ADJUST DATA INPUT

SWITCHES ON PWBs, TECH. REP. SETTINGS

1. CONTROL PANEL KEYS AND TOUCH PANEL

1-1. Control Panel Keys

1-2. Explanation of the Touch Panel

2. FUNCTION OF SWITCHES AND OTHER PARTS ON PWBs

2-1. PWB Location

2-2. PWB-A (Master Board)

2-3. PWB-F (Control Panel)

3. UTILITY MODE

3-1. Utility Mode selection Screen

3-2. Utility Mode Function Tree

3-3. Settings in the Utility Mode

4. TECH. REP. MODE

4-1. Tech. Rep. Mode Menu Screen

4-2. Tech. Rep. Mode Function Setting Procedure

4-3. Tech. Rep. Mode Menu Function Tree

4-4. Setting in the Tech. Rep. Mode

5. SECURITY MODE

5-1. Security Mode Menu Screen

5-2. Security Mode Setting Procedure

5-3. Settings in the Security Mode

6-1. Adjust Mode Menu Screen

6-2. Adjust Mode Setting Procedure

6-3. Adjust Mode Function Tree

6-4. Settings in the Adjust Mode

7. INITIAL MODE

7-1. Initial Mode Menu Screen

7-2. Initial Mode Setting Procedure

7-3. Settings in the Initial Mode

7-4. Data/Conditions Cleared by Reset Switches

8. UTILITY MODE

8-1. Utility Mode selection Screen

8-2. User&s Choice Function Tree

8-3. Settings in the Utility Mode

9. SOFT SWITCH SET

9-1. Soft Switch Initial Value Table

9-2. Set Contents of Soft Switches

TROUBLESHOOTING

1. INTRODUCTION

1-1. Reading the Text

2-1. Electrical Components Check Procedure

2-2. I/O Check List

3. PAPER TRANSPORT FAILURE

3-1. Paper Misfeed

3-2. Size Error

3-3. Misfeed Detection Sensor Layout

3-4. Types of Misfeed Detection and Detection Timings

3-5. Misfeed Troubleshooting Procedures

4-1. Detection Timing by Malfunction Code

4-2. Troubleshooting Procedures by Malfunction Code

5. IMAGE FAILURE

5-1. Image Failure Troubleshooting

5-2. Initial Checks

5-3. Troubleshooting Procedures Classified by Image Failure

6-1. List of Abort Codes

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