Konica Minolta 1390 MF T-2 3

T-2 3

6. IMAGE QUALITY PROBLEMS

6-1. Troubleshooting Image Quality Problems

• This chapter is divided into two parts: “Initial Checks” and “Troubleshooting Specific

Image Quality Problems.”

• If an image quality problem occurs, first go through the “Initial Checks” and, if the cause

is still not identified, continue to “Troubleshooting Specific Image Quality Problems.”

6-2. Initial Checks

• Determine if the failure is attributable to a basic cause or causes.

Section Step Check Result Action

Installation

site

1 The installation site complies with the

requirements.

NO Change the

installation site.

Media 2 The media meets product specifica-

tions.

NO Instruct the user

to use recom-

mended media

that meets prod-

uct specifications.

3 The paper is damp. YES Change the

paper.

Instruct the user

on the correct

methods for stor-

ing media.

Original

document

4 The document is not flat. YES Correct the docu-

ment.

5 Copies of a faint document (written in

light pencil, etc.) are being made.

YES Instruct the user

to use a docu-

ment with an

appropriate image

density.

6 Copies of a highly transparent docu-

ment (OHP transparencies, etc.) are

being made.

YES Instruct the user

on how to copy

transparent docu-

ments.

7 The Original Glass is dirty or

scratched.

YES Clean or replace

the Original

Glass.

PM parts 8 PM parts relating to image formation

have reached the end of their service

life.

YES Clean or replace

the PM parts.

Adjust-

ments

9 There are adjustments that can

improve image quality problems by

being performed again.

YES Perform the

adjustment again.

Contents

Main S-1 SAFETY AND IMPORTANT WARNING ITEMS IMPORTANT NOTICE DESCRIPTION ITEMS FOR DANGER, WARNING AND CAUTION S-2 [1] MODIFICATIONS NOT AUTHORIZED BY KONICA MINOLTA BUSINESS TECHNOLOGIES, INC. SAFETY WARNINGS Prohibited Actions DANGER S-3 [2] POWER PLUG SELECTION Power Cord Set or Power Plug S-4 [3] CHECKPOINTS WHEN PERFORMING ON-SITE SERVICE kw Connection to Power Supply S-5 Power Plug and Cord S-6 Wiring Prohibited Installation Places When not Using the Product for a long time S-7 Ventilation Stability Inspection before Servicing S-8 Work Performed with the Product Powered On S-9 S-10 Handling of Consumables Handling of Service Materials S-11 Handling of Service Materials S-12 [4] Laser Safety 4.1 Internal Laser Radiation S-13 S-14 Page Page Page Page S-19 4.4 PRECAUTIONS FOR HANDLING THE LASER EQUIPMENT S-20 WARNING INDICATIONS ON THE MACHINE Page i CONTENTS GENERAL MAINTENANCE DIS/REASSEMBLY,ADJUSTMENT ii CONTROL PANEL/SERVICE MODE DESCRIPTIONS iii TROUBLESHOOTING iv Page G-1 1. SPECIFICATIONS G-2 G-3 G-4 2. PARTS IDENTIFICATION 2-2. PagePro 1390 MF 2-1. PagePro 1380 MF Page E-1 1. MAINTENANCE SCHEDULE 1-1. Guidelines for Life Specifications Values by Unit E-2 E-3 2. REPLACEMENT/CLEANING OF PARTS E-4 E-5 3. REPLACEMENT OF CONSUMABLES E-6 E-7 E-8 E-9 Page D-1 1. PRECAUTIONS FOR DISASSEMBLY/ADJUST- MENTS 1-1. Parts That Must Not be Touched D-2 2. DISASSEMBLY/REASSEMBLY 2-1. Identification of and Removal Procedures for Exterior Parts (1) PagePro 1380 MF D-3 D-4 (2) PagePro 1390 MF D-5 D-6 D-7 2-2. Removal of Circuit Boards and Other Electrical Components D-8 D-9 (2) PagePro 1390 MF D-10 D-11 D-12 D-13 D-14 D-15 D-16 D-17 D-18 2-3. Removal of Units D-19 CAUTION D-20 D-21 2-4. Disassembly of the Image Reading Section D-22 D-23 2-5. Disassembly of the Main Drive Section D-24 D-25 D-26 D-27 D-28 D-29 D-30 2-6. Upgrading the Firmware D-31 Page Page Page S-1 1. CONTROL PANEL DESCRIPTIONS 1-1. Names and Functions of Control Panel Parts S-2 S-3 S-4 1-2. List of Error Status Message S-5 Page Page S-8 3. CONFIGURATION MENU 3-1. Configuration Menu S-9 S-10 S-11 3-2. Configuration Menu Procedures (PagePro 1380 MF) A S-12 S-13 S-14 3-3. Configuration Menu Procedures (PagePro 1390 MF) S-15 S-16 S-17 S-18 S-19 S-20 S-21 S-22 S-23 4. Fax Report (PagePro 1390 MF only) 4-1. Activity Log Report S-24 4-2. Phone Book ONE TOUCH DIAL 4558F3C606DA PagePro 1390MF Fax Phone Book S-25 4-3. Tx Report 1st page image S-26 S-27 4-4. Lost Job Report Page S-29 4-6. Memory Job List S-30 5. Fax Protocols (PagePro 1390 MF only) 5-1. G3 ECM (G3 Error Correction Mode) S-31 5-2. Line control (1) Procedure of G3 mode communication Basic communications diagram of G3 mode. S-32 5-3. Definition of Abbreviation / Terms S-33 Page T-1 1. INTRODUCTION 1-1. Electrical Components Check Procedures T-2 T-3 T-4 T-5 1-2. Overall Control Configuration T-6 2. PAPER MISFEED 2-1. Initial Check Items T-7 2-2. Media Misfeed Displays 2-3. Locations of Misfeed Detection Sensors T-8 2-4. Misfeed Detection Timing and Troubleshooting Procedures T-9 T-1 0 3. MALFUNCTIONS/WARNINGS 3-1. List of Malfunctions T-1 1 T-1 2 3-2. Malfunction Detection Timing and Troubleshooting Proce- dures T-1 3 T-1 4 T-1 5 T-1 6 T-1 7 4. MALFUNCTIONS RELATED TO POWER SUPPLY 4-1. Power is not Turned ON. T-1 8 5. Miscellaneous Errors 5-1. List of Miscellaneous Malfunctions T-1 9 5-2. Miscellaneous Malfunction Detection Timing and Trouble- shooting Procedures T-2 0 T-2 1 T-2 2 T-2 3 6. IMAGE QUALITY PROBLEMS 6-1. Troubleshooting Image Quality Problems 6-2. Initial Checks T-2 4 6-3. Troubleshooting for Specific Image Quality Problems T-2 5 T-2 6 T-2 7 T-2 8 T-2 9 T-3 0 T-3 1 T-3 2 T-3 3 T-3 4 T-3 5 T-3 6 T-3 7 7. FAX ERROR (PagePro 1390 MF only) 7-1. Outline 7-2. Types of Error T-3 8 T-3 9 7-3. Definition of Error Code T-4 0 T-4 1 T-4 2 Page i CONTENTS GENERAL DIS/REASSEMBLY,ADJUSTMENT TROUBLESHOOTING Page Page Page G-1 1. SPECIFICATIONS Page D-1 1. MAINTENANCE SCHEDULE D-2 2. CLEANING/REPLACEMENT OF PARTS D-3 Page D-5 3. DISASSEMBLY/REASSEMBLY 3-1. Names/Removal of External Parts D-6 D-7 3-2. Removal of Circuit Boards D-8 D-9 3-3. Disassembly D-10 Page Page T-1 1. INTRODUCTION 1-1. Electrical Components Check Procedures T-2 T-3 2. PAPER MISFEED 2-1. Initial Check Items T-4 2-2. Paper Misfeed Displays Page T-6 2-4. Misfeed Detection Timing and Troubleshooting Procedures