Canon 3260 II. IMAGE DEFECTS, 4 - 8

II. IMAGE DEFECTS

If the factor of the malfunction is identified as “image defects” by the malfunction diagnosis flow-

chart (Figure 4-1-1), find out the cause of the failure according to the table below and clear the

problem.

Table 4-2-1

• I-1 Light: Output very light image

• I-2 Dark: Output very dark image

• I-3 Completely Blank: Output no image

• I-4 All Black: Output all black paper

• I-5 Dots in Vertical Lines : Output white dots on the paper

• I-6 Dirt on Back of Paper: Output dirt on the back of the paper

• I-7 Vertical Lines: Output vertical lines on the paper

• I-8 Black Horizontal Lines: Output horizontal lines on the paper

• I-9 Dirt: Output dirt on surface of the paper

• I-10 Blank Spots: Output image with blank spots

• I-11 White Vertical Lines: Output white vertical lines on the paper

• I-12 White Horizontal Lines: Output white horizontal lines on the paper

• I-13 Poor Fixing: Output the image with poorly fixed toner

• I-14 Image Distortion: Output distorted image

II-1. Light

<Possible causes>

1. The image density is not adjusted correctly.

Action: Adjust the image density by operating the external device.

2. Open the upper cover and remove the EP-72 cartridge while a print is being made. Open the

drum protective shield of the EP-72 cartridge and check the toner image on the photosensi-

tive drum. If the toner image has not been transferred to the paper properly, go to step 3.

If the toner image on the drum is faint, go to step 6.

Do not open the drum protective shield for more than 10 seconds.

3. The transfer charging roller contact of the high-voltage power supply is not making a good

connection with the contact of the transfer charging roller shaft.

Action: If the contacts are dirty, clean them. If the problem continues after cleaning, or

parts are deformed or damaged, replace them.

4. The transfer charging roller is deformed or has deteriorated.

Action: Replace the roller.

5. The high-voltage power supply PCB is defective.

Action: Replace the high-voltage power supply PCB.

6. The DC controller PCB is defective.

Action: Replace the DC controller PCB.

4 - 8

CHAPTER 4

Contents

Main Page PREFACE Page CONTENTS CHAPTER 1 PRODUCT INFORMATION CHAPTER 2 OPERATION AND TIMING CHAPTER 3 THE MECHANICAL SYSTEM CHAPTER 4 TROUBLESHOOTING APPENDIX Page Page Page I. FEATURES 1 - 1 Page II. SPECIFICATIONS 1 - 3 1 - 4 1 - 5 III. SAFETY INFORMATION ! 1 - 6 IV. PARTS OF THE PRINTER 1 - 7 1 - 8 V. INSTALLATION 1 - 9 Figure 1-5-1 1 - 10 1 - 11 Page 1 - 13 1 - 14 1 - 15 1 - 16 Page VI. MAINTENANCE AND SERVICING BY THE CUSTOMER 1 - 18 1 - 19 Page VII. OPERATION 1 - 21 1 - 22 1 - 23 1 - 24 1 - 25 Page CHAPTER 1 1-27 Figure 1-7-2 ** Page CHAPTER 2 OPERATION AND TIMING Page I. BASIC OPERATION 2 - 1 2 - 2 Purpose Remark Period 2 - 3 II. ENGINE CONTROL SYSTEM 2 - 4 3. DC Controller Input/Output Signals Figure 2-2-2 2 - 5 Figure 2-2-3 2 - 6 Figure 2-2-4 MT1 2 - 7 Figure 2-2-5 2 - 8 CL1 SL1 CL2 SMT1 2 - 9 SL2 SL3 2 - 10 2 - 11 2 - 12 2 - 13 2 - 14 Page C. High-Voltage Power Supply Figure 2-2-10 2 - 16 2 - 17 2 - 18 D. Power Supply 1. Outline 2 - 19 Power supply Low-voltage power supply circuit Tofixing roller heater DC controller 2 - 20 2 - 21 2 - 22 M 2 - 23 2 - 24 IC202 (G.A.) IC201 (CUP) Page III. LASER/SCANNER SYSTEM 2 - 26 2 - 27 2 - 28 2 - 29 2 - 30 Page IV. IMAGE FORMATION SYSTEM 2 - 32 Figure 2-4-1 2 - 33 2 - 34 5. Drum cleaning stage Step 8 Drum cleaning Figure 2-4-4 2 - 35 2 - 36 2 - 37 2 - 38 2 - 39 2 - 40 2 - 41 V. PICK-UP/FEED SYSTEM 2 - 42 Figure 2-5-1 2 - 43 Figure 2-5-2 2 - 44 SL2 SL3 SMT1 SL1 CL2 CL3 2 - 45 Figure 2-5-4 Figure 2-5-5 2 - 46 STBY INTR PRINT STBY LSTR (Unit:Seconds) Power switchON Pick-up timing from the upper cassette (A4 : tow pages continuously print) 2 - 47 2 - 48 2 - 49 2 - 50 2 - 51 2 - 52 2 - 53 2 - 54 2 - 55 2 - 56 2 - 57 MT1 2 - 58 2 - 59 2 - 60 VI. OVERALL CONTROL SYSTEM 2 - 61 2 - 62 2-63 Video contoroller PCB Block Diagram Note <J1> AIR <J11> ASIC <J6/7> <J8> Page 2 - 65 2 - 66 2 - 67 Page Page Page I. PREFACE 3 - 1 II. EXTERNALS 3 - 2 3 - 3 3 - 4 3 - 5 3 - 6 3 - 7 III. MAIN UNITS 3 - 8 3 - 9 3 - 10 3 - 11 a 3 - 12 3 - 13 3 - 14 IV. MAIN PARTS 3 - 15 3 - 16 3 - 17 3 - 18 3 - 19 3 - 20 3 - 21 3 - 22 3 - 23 V. SWITCHES/SENSORS 3 - 24 3 - 25 3 - 26 3 - 27 3 - 28 3 - 29 Page Page 3 - 32 3 - 33 3 - 34 VII. MOTORS/FANS 3 - 35 3 - 36 3 - 37 3 - 38 3 - 39 3 - 40 VIII. PCBS 3 - 41 3 - 42 3 - 43 3 - 44 3 - 45 3 - 46 3 - 47 3 - 48 CHAPTER 4 TROUBLESHOOTING Page I. PREFACE 4 - 1 Figure 4-1-1 4 - 2 4 - 3 4 - 4 4 - 5 4 - 6 Figure 4-1-3 4 - 7 Canon Inc., LBP-3260 Printer Configuration Page II. IMAGE DEFECTS 4 - 8 4 - 9 4 - 10 4 - 11 4 - 12 Table 4-2-2 4 - 13 Page 4 - 15 4 - 16 4 - 17 IV. PAPER TRANSPORT TROUBLESHOOTING 4 - 18 Page V. MALFUNCTION TROUBLESHOOTING 4 - 20 VI. MALFUNCTION STATUS TROUBLESHOOTING 4 - 21 4 - 22 4 - 23 4 - 24 4 - 25 4 - 26 4 - 27 VII. MEASUREMENT AND ADJUSTMENT 4 - 28 4 - 29 4 - 30 4 - 31 4 - 32 4. High-voltage power supply PCB Figure 4-7-6 Table 4-7-4 4 - 33 Page VIII. MAINTENANCE AND SERVICING 4 - 35 4 - 36 4 - 37 4 - 38 4 - 39 Tool No. Application/r emarks 1 Printer driver tester RY9-0104 No. Tool name RY9-0104 Usedfor checking printer operations. Shape RANK B 4 - 40 4 - 41 4 - 42 Clip 4 - 43 DATA DATASET Connector 1 RY9-0104 DC24V 4 - 44 PRINTER DRIVER 4 - 45 RY9-0104 PRINTER DRIVER Table 4-8-7 Table 4-8-8 4 - 46 Mode select 8 H. Solvents and Oil List Table 4-8-9 4 - 47 IX. LOCATION OF CONNECTORS 4 - 48 4 - 49 Page Page Page A-1 Timing chart for two consecutive prints on A4 paper (Lower cassette feed - face-down tray delivery) I. GENERAL TIMING CHART (Unit: Seconds) Page 654321 D C Ferritecore ToHVT Fixingsub heater 654321 D C (option) Expansion interface board J1 III. LIST OF SIGNALS A. Input/output signals to/from DC controller PCB A - 5 A - 6 A - 7 A - 8 A - 9 Page IV. MESSAGES TABLE A - 11 A - 12 Note: A - 13 A - 14 A - 15 Note: A - 16 A - 17 A - 18 Note: A - 19 A - 20