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Ricoh iris Service Manual iris

Aficio Color 3006/4006/4106
(Iris/Lilac, A258/A259/A260)
Service Manual
Issued February 24, 1999, Ricoh CO., LTD.
ø

IMPORTANT SAFETY NOTICES

PREVENTION OF PHYSICAL INJURY
2. The wall outlet should be near the copier and easily accessible.
3. Note that some components of the copier and the paper tray unit are supplied with electrical voltage even if the main power switch is turned off.
4. If any adjustment or operation check has to be made with exterior covers off or open while the main switch is turned on, keep hands away from electrified or mechanically driven components.
5. If the Start key is pressed before the copier completes the warm-up period (the Start key starts blinking red and green alternatively), keep hands away from the mechanical and the electrical components as the copier starts making copies as soon as the warm-up period is completed.
6. The inside and the metal parts of the fusing unit become extremely hot while the copier is operating. Be careful to avoid touching those components with your bare hands.
HEALTH SAFETY CONDITIONS
1. Never operate the copier without the ozone filters installed.
2. Always replace the ozone filters with the specified ones at the specified intervals.
3. Toner and developer are non-toxic, but if you get either of them in your eyes by accident, it may cause temporary eye discomfort. Try to remove with eye drops or flush with water as first aid. If unsuccessful, get medical attention.
OBSERVANCE OF ELECTRICAL SAFETY STANDARDS
1. The copier and its peripherals must be installed and maintained by a customer service representative who has completed the training course on those models.
2. The NVRAM on the system control board has a lithium battery which can explode if replaced incorrectly. Replace the NVRAM only with an identical one. The manufacturer recommends replacing the entire NVRAM. Do not recharge or burn this battery. Used NVRAM must be handled in accordance with local regulations.
1
1.
SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL
Do not incinerate toner bottles or used toner. Toner dust may ignite suddenly when exposed to an open flame.
2. Dispose of used toner, developer, and organic photoconductors in accordance with local regulations. (These are non-toxic supplies.)
3. Dispose of replaced parts in accordance with local regulations.
4. When keeping used lithium batteries in order to dispos e of them later, do not put more than 100 batteries per sealed box. Storing larger numbers or not sealing them apart may lead to chemical reactions and heat build-up.

LASER SAFETY

The Center for Devices and Radiological Health (CDRH) prohibits the repair of laser-based optical units in the field. The optical housing unit can only be repaired in a factory or at a location with the requisite equipment. The laser subsystem is replaceable in the field by a qualified Customer Engineer. The laser chassis is not repairable in the field. Customer engineers are therefore directed to return all chassis and laser subsystems to the factory or service depot when replacement of the optical subsystem is required.
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WARNING Use of controls, or adjustment, or performance of procedures other than those specified in this manual may result in hazardous radiation exposure.
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WARNING Turn off the main switch before attempting any of the procedures in the Laser Unit section. Laser beams can seriously damage your eyes.
CAUTION MARKING:
2

TABLE OF CONTENTS

1. OVERALL MACH INE INFORMATION........................................1-1
1.1 SPECIFICATIONS.................................................................................... 1-1
1.1.1 MACHINE CONFIGURATION ......................................................... 1-1
1.1.2 GENERAL SPECIFICATIONS......................................................... 1-2
1.1.3 PLATEN/ARDF ORIGINAL SIZE DETECTION................................ 1-6
1.1.4 COPY PAPER SIZE......................................................................... 1-7
1.1.5 APS PAPER SIZES AVAILABLE..................................................... 1-8
1.1.6 NOISE EMISSION........................................................................... 1-9
1.1.7 POWER CONSUMPTION.............................................................. 1-10
1.1.8 DISPLAY EDITOR SPECIFICATIONS.......................................... 1-10
1.2 MECHANISM OVERVIEW ..................................................................... 1-11
1.2.1 IMAGE GENERATION PROCESS................................................ 1-11
1.3 MAJOR UNIT LAYOUT AND PAPER FEED PATH................................ 1-14
1.4 PARTS LAYOUT .................................................................................... 1-17
1.4.1 MECHANICAL COMPONENT LAYOUT........................................ 1-17
1.4.2 ELECTRICAL COMPONENT LAYOUT......................................... 1-18
1.4.3 DRIVE LAYOUT............................................................................. 1-25
1.4.5 AIR FLOW ..................................................................................... 1-26
1.4.5 ELECTRICAL COMPONENT DESCRIPTIONS............................. 1-27
Printed Circuit Boards........................................................................ 1-27
Motors................................................................................................ 1-28
Fan Motors......................................................................................... 1-28
Sensors.............................................................................................. 1-29
Switches............................................................................................. 1-30
Clutches............................................................................................. 1-30
Solenoids........................................................................................... 1-31
Lamps................................................................................................ 1-31
Heaters .............................................................................................. 1-31
Thermistors........................................................................................ 1-31
Thermofuses...................................................................................... 1-31
Thermostat......................................................................................... 1-31
Counter.............................................................................................. 1-32
2. DETAILED DESCRIPTIONS .......................................................2-1
2.1 PROCESS CONTROL.............................................................................. 2-1
2.1.1 OVERVIEW ..................................................................................... 2-1
2.1.2 POTENTIAL CONTROL .................................................................. 2-2
Overview.............................................................................................. 2-2
Potential Control Timing....................................................................... 2-2
2.1.3 PROCESS CONTROL SELF CHECK ............................................. 2-4
Flow Chart............................................................................................ 2-4
Step 1: VSG Adjustment...................................................................... 2-5
Step 2: ID Sensor Pattern Generation.................................................. 2-5
I
Step 3: Sensor Pattern Potential Detection.......................................... 2-6
Step 4: Sensor Pattern Density Detection............................................ 2-7
Step 5: Toner Amount Calculation ....................................................... 2-8
Step 6: Development Potential Calculation.......................................... 2-9
Step 7: Selecting the Optimum VD, VB, VL .......................................2-10
2.1.4 PROCESS CONTROL γ CORRECTION....................................... 2-11
What is process control γ?................................................................. 2-11
How is it done?................................................................................... 2-11
Process control gamma correction timing.......................................... 2-12
2.2 TONER SUPPLY CONTROL.................................................................. 2-13
2.2.1 TONER SUPPLY CONTROL METHOD........................................ 2-13
2.2.2 FUZZY CONTROL MODE............................................................. 2-13
2.2.3 VSP DETECTION FOR TONER SUPPLY CONTROL .................. 2-14
2.2.4 CALCULATING THE AMOUNT OF TONER ON THE DRUM....... 2-14
Fuzzy Logic Algorithm........................................................................ 2-14
Image Area Ratio............................................................................... 2-15
2.2.5 FIXED SUPPLY MODE ................................................................. 2-15
2.2.6 TONER SUPPLY IN ABNORMAL SENSOR CONDITIONS..........2-15
2.2.7 DETECTING TONER NEAR END/END......................................... 2-16
Toner Near-end.................................................................................. 2-16
Toner End.......................................................................................... 2-16
Toner near end detection................................................................... 2-17
Toner end detection........................................................................... 2-17
Toner end recovery............................................................................ 2-18
Toner replenishment confirmation mode............................................ 2-18
2.3 DRUM UNIT............................................................................................ 2-19
2.3.1 OVERVIEW ................................................................................... 2-19
2.3.2 DRIVE MECHANISM..................................................................... 2-20
2.3.3 DRUM CHARGE............................................................................ 2-21
2.3.4 DRUM CLEANING......................................................................... 2-22
2.3.5 PCC............................................................................................... 2-22
2.3.6 QUENCHING................................................................................. 2-23
2.3.7 CARRIER CATCHER .................................................................... 2-23
2.4 SCANNER UNIT..................................................................................... 2-24
2.4.1 OVERVIEW ................................................................................... 2-24
2.4.2 SCANNER..................................................................................... 2-25
2.4.3 SCANNER DRIVE ......................................................................... 2-26
2.4.4 COLOR CCD ................................................................................. 2-27
2.4.5 WHITE PLATE SCANNING........................................................... 2-28
2.4.6 SCANNER IPU BOARD................................................................. 2-28
2.4.7 ORIGINAL SIZE DETECTION....................................................... 2-29
2.4.8 OTHERS........................................................................................ 2-31
Anti-condensation Heater................................................................... 2-31
Fans................................................................................................... 2-31
2.5 IMAGE PROCESSING ........................................................................... 2-32
2.5.1 OVERVIEW ................................................................................... 2-32
2.5.2 SCANNER SECTION BLOCK DIAGRAM...................................... 2-33
2.5.3 SCANNER SECTION .................................................................... 2-34
Photoelectric Conversion (by the CCD) ............................................. 2-34
II
Signal Processing (in the Analog ASIC)............................................. 2-34
A/D Conversion.................................................................................. 2-34
Shading Circuit................................................................................... 2-35
D/A Conversion.................................................................................. 2-37
Scan Line Correction.......................................................................... 2-37
2.5.4 IPU SECTION BLOCK DIAGRAM................................................. 2-38
2.5.5 IPU SECTION................................................................................ 2-39
Picture Element Correction and Scanner Gamma Correction............ 2-39
ACS (Auto Color Selection)................................................................ 2-41
Auto Letter/Photo Separation............................................................. 2-42
Filtering and Color Conversion........................................................... 2-44
Changes in UCR Ratio with Image Density and Copy Mode ............. 2-50
UCA (Under Color Addition)............................................................... 2-50
Main Scan Magnification.................................................................... 2-51
Mirror Image....................................................................................... 2-51
Gamma (γ) Correction (Printer Gamma)............................................ 2-52
Area Editing........................................................................................ 2-55
CPU ................................................................................................... 2-55
IPU Board Test................................................................................... 2-55
2.6 LASER EXPOSURE............................................................................... 2-56
2.6.1 OVERVIEW ................................................................................... 2-56
2.6.2 OPTICAL PATH............................................................................. 2-57
Overview............................................................................................ 2-57
F-theta Lenses and the BTL............................................................... 2-59
Laser Synchronizing Detector Boards................................................ 2-60
Gradation Control (Laser Pulse Width and Laser Power Modulation) 2-61
600 DPI Writing.................................................................................. 2-62
Auto Power Control (APC)................................................................. 2-63
LD Safety Switches............................................................................ 2-64
2.6 DEVELOPMENT UNIT........................................................................... 2-65
2.6.1 OVERVIEW ................................................................................... 2-65
2.6.2 REVOLVER MECHANISM............................................................. 2-66
Overview............................................................................................ 2-66
Revolver Drive.................................................................................... 2-67
Revolver Home Position Detection..................................................... 2-68
2.6.3 DEVELOPMENT MECHANISMS................................................... 2-69
Overview............................................................................................ 2-69
Development Drive............................................................................. 2-70
Developer Agitation............................................................................ 2-70
Toner Agitation................................................................................... 2-71
Development Bias.............................................................................. 2-72
Toner Supply Mechanism ..................................................................2-73
Toner Cartridge Detection.................................................................. 2-74
Incorrect Toner Installation Prevention............................................... 2-74
Toner End Detection.......................................................................... 2-75
2.7 TRANSFER BELT UNIT......................................................................... 2-76
2.7.1 OVERVIEW ................................................................................... 2-76
2.7.2 BELT TRANSFER MECHANISMS ................................................ 2-77
Transfer Belt Drive............................................................................. 2-77
III
Transfer Belt Release Lever............................................................... 2-78
Belt Transfer Bias............................................................................... 2-79
Belt Mark Detection............................................................................ 2-80
Transfer Belt Cleaning Mechanism.................................................... 2-81
2.7.3 PAPER TRANSFER MECHANISM................................................ 2-85
Paper Transfer Unit Contact/Release Mechanism............................. 2-85
Paper Transfer Bias Roller Drive........................................................ 2-86
Paper Transfer Bias Roller Cleaning.................................................. 2-87
Paper Transfer Bias........................................................................... 2-88
2.7.4 PAPER SEPARATION MECHANISM............................................ 2-90
2.8 PAPER FEED AND REGISTRATION..................................................... 2-91
2.8.1 OVERVIEW ................................................................................... 2-91
2.8.2 PAPER TRAY................................................................................ 2-92
Paper Feed/Separation...................................................................... 2-92
Separation and Pick-Up Roller Release............................................. 2-92
Paper Lift............................................................................................ 2-93
Paper End Detection..........................................................................2-94
Paper Size Setting ............................................................................. 2-94
Tray Paper Height Sensor.................................................................. 2-95
2.8.3 BY-PASS TRAY............................................................................. 2-96
By-pass Table Mechanism................................................................. 2-96
Paper Feed/Separation...................................................................... 2-96
Paper End Detection..........................................................................2-97
Paper Size Detection ......................................................................... 2-98
Pick-up Roller..................................................................................... 2-99
2.8.4 REGISTRATION MECHANISM AND PAPER FEED DRIVE......... 2-99
2.9 PAPER TRANSPORT, FUSING, AND PAPER EXIT ........................... 2-100
2.9.1 MAJOR COMPONENTS.............................................................. 2-100
2.9.2 DRIVE MECHANISM................................................................... 2-101
2.9.3 FUSING UNIT.............................................................................. 2-102
Fusing Mechanism........................................................................... 2-102
Fusing Temperature Control............................................................ 2-102
Fusing/Pressurization Mechanism................................................... 2-103
Oil Supply Mechanism ..................................................................... 2-104
Cleaning Mechanism........................................................................ 2-105
2.9.4 INVERTER AND PAPER EXIT MECHANISMS........................... 2-106
Paper Exit......................................................................................... 2-106
Junction Gate Mechanism (A259/A260 Only).................................. 2-106
Paper Exit Door Mechanism (A259/A260 Only)............................... 2-107
2.10 DUPLEX TRAY (A259/A260 COPIERS ONLY)..................................2-108
2.10.1 OVERVIEW ............................................................................... 2-108
2.10.2 DRIVE MECHANISM................................................................. 2-109
2.10.3 PAPER FEED INTO THE DUPLEX TRAY................................. 2-110
1. Duplex Stacking........................................................................... 2-110
2. Paper Feed from the Duplex Tray................................................2-110
3. Duplex Entrance To Duplex Tray................................................. 2-111
2.10.4 JOGGER MECHANISM............................................................. 2-112
2.10.5 PAPER FEED FROM THE DUPLEX TRAY............................... 2-113
Bottom Plate Lift Mechanism ........................................................... 2-113
IV
Paper Feed-out mechanism............................................................. 2-114
2.11 OTHERS............................................................................................. 2-115
2.11.1 SYSTEM CONFIGURATION..................................................... 2-115
2.11.2 POWER STATES ...................................................................... 2-116
Energy Saver Mode ......................................................................... 2-116
Power-off (Sleep) State.................................................................... 2-116
Main Power Switch Off State ........................................................... 2-117
Power State Transition Diagram...................................................... 2-117
2.11.3 TOUCH PANEL (A259/A260 MACHINES ONLY)...................... 2-118
2.11.4 BUS SWITCH BOARD (OPTIONAL)......................................... 2-119
3. INSTALLATION PROCEDURE...................................................3-1
3.1 INSTALLATION REQUIREMENTS .......................................................... 3-1
3.1.1 DIMENSIONS.................................................................................. 3-2
3.1.2 ENVIRONMENTAL REQUIREMENTS............................................ 3-3
3.1.3 MINIMUM SPACE REQUIREMENTS.............................................. 3-5
3.1.4 POWER REQUIREMENTS.............................................................. 3-6
3.2 COPIER INSTALLATION.......................................................................... 3-7
3.2.1 ACCESSORY CHECK..................................................................... 3-7
3.2.2 COPIER INSTALLATION PROCEDURE......................................... 3-8
Tape Removal...................................................................................... 3-8
Removing the Inner Transfer Cover and Paper Transfer
Locking Screw.................................................................................. 3-10
Developer Installation......................................................................... 3-12
Pressure Release Lever Set-up......................................................... 3-17
Installing Fusing Silicone Oil.............................................................. 3-18
Initialization and Function Checks...................................................... 3-19
Setting the Tray Paper Size............................................................... 3-20
Setting the Language and Unit of Measurement................................ 3-21
Resetting the Counter........................................................................ 3-21
3.2.2 RELOCATION PROCEDURE........................................................ 3-22
3.3 PAPER TRAY UNIT (A832/A833)........................................................... 3-23
3.3.1 ACCESORY CHECK..................................................................... 3-23
3.3.2 INSTALLATION............................................................................. 3-24
TRAY HEATER (OPTION)................................................................. 3-27
3.4 PLATEN COVER (A749-01)................................................................... 3-28
3.5 ARDF (A663).......................................................................................... 3-29
3.5.1 ACCESSORY CHECK................................................................... 3-29
3.5.2 INSTALLATION............................................................................. 3-30
3.6 20-BIN SORTER STAPLER (A834)........................................................ 3-31
3.6.1 ACCESSORY CHECK................................................................... 3-31
3.6.2 INSTALLATION............................................................................. 3-32
3.7 10-BIN SORTER STAPLER (A555)........................................................ 3-36
3.7.1 ACCESSORY CHECK................................................................... 3-36
3.7.2 INSTALLATION............................................................................. 3-37
3.8 3-BIN SORTER (A849)........................................................................... 3-42
V
3.8.1 ACCESSORY CHECK................................................................... 3-42
3.8.2 INSTALLATION............................................................................. 3-43
3.9 FILM PROJECTOR TABLE (A702-19)................................................... 3-45
3.10 FILM PROJECTOR UNIT (A846) ......................................................... 3-47
3.10.1 ACCESSORY CHECK................................................................. 3-47
3.10.2 INSTALLATION............................................................................ 3-48
3.11 CONTROLLER INTERFACE TYPE E (A848)....................................... 3-55
3.12 OTHERS............................................................................................... 3-59
3.12.1 ORIGINAL TABLE INSTALLATION PROCEDURE..................... 3-59
3.12.2 KEY COUNTER HOLDER INSTALLATION PROCEDURE......... 3-60
4. SERVICE TABLES......................................................................4-1
4.1 SERVICE PROGRAM (SP) MODES........................................................ 4-1
4.1.1 HOW TO ENTER SP MODE............................................................ 4-1
4.2 SP MODE TYPES .................................................................................... 4-1
4.3 SP MODE TABLE..................................................................................... 4-2
4.4 SP MODE ADDITIONAL NOTES .............................................................4-3
4.4.1 SP5-804 OUTPUT CHECK............................................................ 4-3
4.4.2 SP5-803 INPUT CHECK.................................................................. 4-5
Printer .................................................................................................. 4-5
Sorter................................................................................................... 4-7
ARDF................................................................................................... 4-8
4.4.3 SP5-955-018 TEST PATTERN SELECTION................................... 4-8
4.4.4 5-955-001 LD_PWM (DOT, LINE)................................................... 4-8
4.4.5 5-955-002 TO 5-955-016 LD_PWM (16-GRADATION)................... 4-9
4.4.6 5-995-017 LD_PWM (COLOR PATCHES)...................................... 4-9
4.5 USER TOOL...........................................................................................4-10
4.5.1 USER TOOL MENU....................................................................... 4-10
System settings.................................................................................. 4-10
COPY FEATURES............................................................................. 4-11
4.5.2 SYSTEM SETTINGS..................................................................... 4-12
4.5.3 COPY FEATURES......................................................................... 4-16
General Features............................................................................... 4-16
Image Adjustment.............................................................................. 4-19
Set Favorite Keys............................................................................... 4-21
Special Modes.................................................................................... 4-21
4.6 TP/SW/LED/FUSE.................................................................................. 4-22
4.6.1 MAIN CONTROL BOARD TEST POINTS..................................... 4-22
4.6.2 SCANNER IPU BOARD TEST POINTS........................................ 4-23
4.6.3 LD MAIN CONTROL BOARD TEST POINTS................................ 4-24
4.6.4 I/O CONTROL BOARD TEST POINTS ......................................... 4-25
4.6.5 SWITCH SPECIFICATIONS.......................................................... 4-28
Scanner IPU Board............................................................................ 4-28
4.6.6 LED SPECIFICATIONS.................................................................4-28
4.6.7 FUSE SPECIFICATIONS .............................................................. 4-29
PSU (US model)................................................................................. 4-29
PSU (European/Asian Model)............................................................ 4-30
VI
5. PREVENTIVE MAINTENANCE...................................................5-1
5.1 PM PROCEDURES.................................................................................. 5-1
5.1.1 PM-RELATED COUNTERS............................................................. 5-1
5.1.2 REGULAR PREVENTIVE MAINTENANCE FLOW DIAGRAM........ 5-3
5.2 REGULAR PM ITEMS.............................................................................. 5-7
Regular PM Table................................................................................ 5-7
6. REPLACEMENT AND ADJUSTMENT ........................................ 6-1
6.1 COVERS, FANS, AND FILTERS.............................................................. 6-1
6.1.1 FRONT, INNER, AND INNER TRANSFER COVERS ..................... 6-1
6.1.2 REAR COVERS............................................................................... 6-2
6.1.3 RIGHT COVERS.............................................................................. 6-3
6.1.4 LEFT COVERS................................................................................ 6-3
6.1.5 EXPOSURE GLASS........................................................................ 6-4
6.1.6 OPERATION PANEL....................................................................... 6-4
6.1.7 UPPER COVERS ............................................................................ 6-4
6.1.8 USED TONER TANK....................................................................... 6-5
6.1.9 CHARGE CORONA FAN FILTER ................................................... 6-5
6.1.10 MAIN EXHAUST FAN FILTER....................................................... 6-6
6.1.11 SCANNER EXHAUST FAN FILTER.............................................. 6-6
6.1.12 MAIN EXHAUST FAN.................................................................... 6-7
6.2 DRUM UNIT.............................................................................................. 6-8
6.2.1 PULLING OUT THE REVOLVER/DRUM DRAWER...................... 6-10
6.2.2 DRUM REPLACEMENT................................................................ 6-12
6.2.3 CLEANING BLADE AND PCC WIRE REPLACEMENT................. 6-14
6.2.4 CLEANING BRUSH REPLACEMENT........................................... 6-15
6.2.5 LUBRICANT BAR REPLACEMENT.............................................. 6-16
6.2.6 CHARGE CORONA GRID AND WIRE REPLACEMENT.............. 6-17
6.2.7 POTENTIAL SENSOR REPLACEMENT....................................... 6-18
6.3 SCANNER UNIT..................................................................................... 6-19
6.3.1 EXPOSURE LAMP REPLACEMENT............................................ 6-19
6.3.2 SBU REPLACEMENT.................................................................... 6-20
6.3.3 SCANNER IPU BOARD REPLACEMENT..................................... 6-21
6.3.4 SCANNER WIRE/SCANNER MOTOR REPLACEMENT .............. 6-22
6.3.5 APS SENSORS............................................................................. 6-26
6.3.6 SCANNER HP SENSOR............................................................... 6-27
6.4 COPY IMAGE ADJUSTMENT................................................................ 6-28
6.4.1 PRINTER GAMMA ADJUSTMENT................................................ 6-28
Setting the KCMY standard values.................................................... 6-28
Gamma Data Print Out....................................................................... 6-28
KCMY color balance adjustment........................................................ 6-28
Adjustment procedure........................................................................ 6-29
Standard Copy Quality....................................................................... 6-30
6.4.2 ACC TARGET ADJUSTMENT....................................................... 6-31
6.4.3 MAIN SCAN DOT POSITION CORRECTION............................... 6-32
VII
6.5 LASER OPTICS SECTION..................................................................... 6-34
6.5.1 POLYGON MIRROR MOTOR REPLACEMENT............................ 6-35
6.5.2 LASER SYNCHRONIZING DETECTOR BOARD AND LD UNIT
REPLACEMENT...................................................................................... 6-37
6.5.3 SQUARENESS ADJUSTMENT..................................................... 6-38
6.6 DEVELOPMENT UNIT........................................................................... 6-40
6.6.1 REPLACING THE DEVELOPER................................................... 6-40
Developer Collection Procedure......................................................... 6-40
Installing New Developer ................................................................... 6-43
6.6.2 POST DEVELOPER COLLECTION PROCEDURE....................... 6-46
6.6.3 DEVELOPMENT UNIT REPLACEMENT....................................... 6-47
6.6.4 TONER COLLECTION TRAY CLEANING..................................... 6-48
6.7 TRANSFER BELT UNIT......................................................................... 6-49
6.7.1 TRANSFER BELT SECTION......................................................... 6-49
Transfer Belt and Cleaning Unit......................................................... 6-49
Cleaning Blade Replacement............................................................. 6-52
Lubricant Bar and Lubricant Brush Replacement............................... 6-53
6.7.2 PAPER TRANSFER UNIT............................................................. 6-54
Lubricant Bar And Blade Replacement.............................................. 6-54
Paper Separation Corona Wire Replacement.................................... 6-54
Transfer Roller Replacement............................................................. 6-55
6.8 PAPER FEED AND REGISTRATION SECTION.................................... 6-56
6.8.1 BY-PASS FEED TABLE REMOVAL.............................................. 6-56
6.8.2 BY-PASS PAPER WIDTH DETECTION BOARD REPLACEMENT6-56
6.8.3 BY-PASS FEED, PICK-UP AND SEPARATION ROLLERS,
AND TORQUE LIMITER REPLACEMENT.................................... 6-57
6.8.4 BY-PASS FEED UNIT REPLACEMENT........................................ 6-58
6.8.5 REGISTRATION SENSOR REPLACEMENT................................ 6-58
6.8.6 VERTICAL TRANSPORT DOOR REPLACEMENT....................... 6-59
6.8.7 PAPER TRAY PICK-UP, PAPER FEED, AND SEPARATION
ROLLER REPLACEMENT............................................................. 6-59
6.8.8 PAPER FEED UNIT AND CLUTCH REPLACEMENT................... 6-60
6.8.9 COPY IMAGE AREA ADJUSTMENT ............................................ 6-61
Preparation ........................................................................................ 6-61
Leading Edge Registration................................................................. 6-62
Side-to-side Registration.................................................................... 6-63
6.9 PAPER TRANSPORT, FUSING, AND PAPER EXIT SECTIONS.......... 6-64
6.9.1 FUSING UNIT REMOVAL ............................................................. 6-64
6.9.2 TRANSPORT UNIT REMOVAL..................................................... 6-65
6.9.3 FUSING UNIT TOP COVER REMOVAL .......................................6-66
6.9.4 OIL SUPPLY PAD AND OIL BLADE REPLACEMENT.................. 6-67
6.9.5 HOT ROLLER THERMOFUSE REPLACEMENT.......................... 6-68
6.9.6 FUSING UNIT DISASSEMBLY...................................................... 6-68
6.9.7 CLEANING ROLLER SCRAPER CLEANING................................ 6-69
6.9.8 HOT ROLLER THERMISTOR REPLACEMENT............................ 6-70
6.9.9 HOT ROLLER FUSING LAMP REPLACEMENT........................... 6-71
6.9.10 HOT ROLLER AND CLEANING ROLLER REPLACEMENT
AND CLEANING........................................................................... 6-72
VIII
6.9.11 PRESSURE ROLLER AND PRESSURE ROLLER FUSING
LAMP........................................................................................... 6-73
6.9.12 PRESSURE ROLLER THERMOFUSE AND THERMISTOR
REPLACEMENT.......................................................................... 6-74
6.9.13 NIP BAND WIDTH ADJUSTMENT.............................................. 6-75
6.9.14 CAUTIONS TO BE TAKEN WHEN USING A FUSING UNIT
THAT HAS BEEN IN STOCK FOR A LONG PERIOD.................. 6-76
6.10 DUPLEX UNIT...................................................................................... 6-77
6.10.1 DUPLEX UNIT REMOVAL........................................................... 6-77
6.10.2 SEPARATION ROLLER REPLACEMENT................................... 6-77
6.10.3 FEED ROLLER REPLACEMENT................................................ 6-78
6.10.4 DUPLEX FEED MOTOR REPLACEMENT.................................. 6-79
6.11 SYSTEM AND ELECTRONICS............................................................ 6-81
6.11.1 IPU PROGRAM DOWNLOADING............................................... 6-81
6.11.2 MAIN PROGRAM DOWNLOADING............................................ 6-82
6.11.3 NV-RAM UPLOADING AND DOWNLOADING............................ 6-83
Upload/Download Procedure............................................................. 6-83
6.11.4 RAM CLEAR................................................................................ 6-84
RAM Clear Procedure........................................................................ 6-84
Precautions when replacing the NV-RAM.......................................... 6-85
6.11.5 TOUCH PANEL CALIBRATION (A259/A260 ONLY)................... 6-86
7. TROUBLESHOOTING.................................................................7-1
7.1 SERVICE CALL (SC) ERRORS ............................................................... 7-1
7.1.1 SC TYPES AND RESETTING PROCEDURES............................... 7-1
7.2 SC CODE TABLE..................................................................................... 7-2
7.3 PROCESS CONTROL ERROR CONDITIONS ........................................ 7-3
7.3.1 PROCESS CONTROL SELF-CHECK RESULTS (SP3-975-00)..... 7-3
7.3.2 DEVELOPER SETUP RESULTS (SP3-964-00).............................. 7-4
7.3.3 SELF-CHECK PROCESS CONTROL RELATED SCS ................... 7-5
7.4 DRUM LIGHT FATIGUE........................................................................... 7-6
IX
OPTIONS
ARDF (A663)
1. SPECIFICATIONS.................................................................A663-1
2. COMPONENT LAYOUT........................................................A663-2
2.1 MECHANICAL COMPONENTS..........................................................A663-2
2.2 ELECTRICAL COMPONENTS...........................................................A663-3
3. ELECTRICAL COMPONENT DESCRIPTION.......................A663-4
4. DETAILED DESCRIPTIONS.................................................A663-5
4.1 ORIGINAL PICK-UP MECHANISM....................................................A663-5
4.2 SEPARATION AND PAPER FEED MECHANISM..............................A663-6
4.3 FRICTION BELT DRIVE MECHANISM..............................................A663-7
4.4 ORIGINAL SIZE DETECTION............................................................A663-8
4.5 PAPER TRANSPORT MECHANISM..................................................A663-9
4.6 THICK/THIN ORIGINAL MODES ..................................................... A663-10
4.7 ORIGINAL FEED-OUT MECHANISM...............................................A663-11
4.8 TWO-SIDED ORIGINAL FEED MECHANISM..................................A663-12
5. TIMING CHARTS ................................................................A663-13
5.1 A4 SIDEWAYS: 1 SIDED ORIGINAL ...............................................A663-13
5.2 COMBINE 2 ORIGINAL MODE........................................................A663-14
5.3 A4 SIDEWAYS: DUPLEX.................................................................A663-15
6. SERVICE TABLES..............................................................A663-16
6.1 DIP SWITCHES................................................................................A663-16
6.2 VARIABLE RESISTORS...................................................................A663-17
6.3 LED...................................................................................................A663-17
6.4 FUSE................................................................................................A663-17
7. REPLACEMENT A N D ADJUSTMENT................................A663-18
7.1 TRANSPORT BELT REPLACEMENT..............................................A663-18
7.2 FEED ROLLER REPLACEMENT..................................................... A663-19
7.3 FRICTION BELT REPLACEMENT...................................................A663-20
7.4 ORIGINAL SET AND WIDTH SENSOR REPLACEMENT................A663-21
7.5 VERTICAL REGISTRATION ADJUSTMENT...................................A663-22
7.5.1 ONE SIDED THIN ORIGINAL MODE......................................A663-22
7.5.2 TWO SIDED ORIGINAL MODE...............................................A663-23
7.6 SIDE-TO-SIDE REGISTRATION (DF POSITIONING)
ADJUSTMENT..................................................................................A663-24
X
PAPER TRAY UNIT (A832/A833)
1. PRODUCT OVERVIEW..........................................................
1.1 SPECIFICATIONS..............................................................................A833-1
1.2 COMPONENT DESCRIPTION...........................................................A833-1
1.2.1 PAPER FEED MECHANISM.....................................................A833-1
1.3 COMPONENT LAYOUTS...................................................................A833-2
1.3.1 ELECTRICAL COMPONENT LAYOUT.....................................A833-2
1.3.2 DRIVE LAYOUT.........................................................................A833-3
1.3.3 DISASSEMBLY AND ADJUSTMENT PROCEDURES..............A833-4
(1) Pick-up, paper feed, and separation rollers..............................A833-4
(2) Bank paper feed and tray lift motors......................................... A833-4
(3) Paper feed clutch......................................................................A833-5
(3) Relay clutch..............................................................................A833-5
(4) Paper feed unit.........................................................................A833-6
20-BIN SORTER (A834)
1. OVERALL MAC HINE INFORMATION...................................
1.1 SPECIFICATIONS..............................................................................A834-1
1.2 COMPONENT LAYOUT.....................................................................A834-3
1.2.1 MECHANICAL COMPONENT LAYOUT .................................... A834-3
1.2.2 DRIVE LAYOUT.........................................................................A834-4
1.2.3 ELECTRICAL COMPONENT DESCRIPTION...........................A834-5
A833-
A834-
1
1
2. DETAILED DESCRIPTIONS ..................................................
2.1 BASIC OPERATION...........................................................................A834-6
2.1.1 NORMAL MODE AND SORT/STACK MODE............................A834-6
Normal (Proof) Mode......................................................................A834-6
Sort Mode ......................................................................................A834-6
Stack Mode....................................................................................A834-7
2.1.2 STAPLE MODE.........................................................................A834-8
Mechanism.....................................................................................A834-8
Automatic Stapling.........................................................................A834-8
Manual Stapling .............................................................................A834-8
2.1.3 BIN DRIVE MECHANISM..........................................................A834-9
2.1.4 BIN HOME POSITION............................................................. A834-10
2.1.5 JOGGER MECHANISM...........................................................A834-11
2.1.6 GRIP ASSEMBLY....................................................................A834-12
2.1.7 STAPLER UNIT.......................................................................A834-13
2.1.8 STAPLER SWITCH .................................................................A834-14
Staple Mode Disabling Conditions...............................................A834-14
2.1.9 PAPER FEED AND MISFEED DETECTION TIMING..............A834-15
Proof ModeA4 sideways, five copies, 150 mm/s..........................A834-15
Sorter ModeA4 sideways, two copies a of two-page original,
150 mm/s.....................................................................................A834-15
A834-
6
XI
Staple ModeA4 sideways, two copies of a two-page original, after
sorting, 150 mm/s.........................................................................A834-16
2.1.10 JAM DETECTION..................................................................A834-17
Paper JamA4 sideways................................................................A834-17
Staple Jam...................................................................................A834-17
3. REPLACEMENT AND ADJUSTEMENT ..............................
3.1 EXTERIOR COVER REMOVAL.......................................................A834-18
3.1.1 FRONT COVER.......................................................................A834-18
3.1.2 REAR COVER.........................................................................A834-18
3.1.3 TOP COVER............................................................................A834-18
3.1.4 LOWER COVER......................................................................A834-18
3.2 STAPLER UNIT REMOVAL..............................................................A834-19
3.3 GRIP ARM REPLACEMENT............................................................A834-20
3.4 BIN REMOVAL.................................................................................A834-21
3.5 TRANSPORT MOTOR REMOVAL...................................................A834-22
10-BIN SORTER (A555)
A834-
18
1. SPECIFICATIONS.................................................................A555-1
2. COMPONENT LAYOUT........................................................A555-3
2.1 MECHANICAL COMPONENT LAYOUT.............................................A555-3
2.2 DRIVE LAYOUT .................................................................................A555-4
2.3 ELECTRICAL COMPONENT DESCRIPTION....................................A555-5
3. BASIC OPERATION...............................................................
3.1 NORMAL MODE AND SORT/STACK MODE.....................................A555-6
3.2 STAPLE MODE..................................................................................A555-8
3.3 BIN DRIVE MECHANISM.................................................................A555-10
3.4 BIN HOME POSITION......................................................................A555-11
3.5 JOGGER MECHANISM....................................................................A555-12
3.6 GRIP ASSEMBLY.............................................................................A555-13
3.7 STAPLER UNIT................................................................................A555-14
3.8 STAPLER SWITCH..........................................................................A555-15
3.9 PAPER FEED AND MISFEED DETECTION TIMING ......................A555-16
3.10 JAM DETECTION...........................................................................A555-18
A555-
6
4. SERVICE TABLES...............................................................
4.1 DIP SWITCHES................................................................................A555-19
4.2 TEST POINTS..................................................................................A555-20
4.3 LED...................................................................................................A555-20
4.4 VARIABLE RESISTOR.....................................................................A555-20
5. REPLACEMENT AND ADJUSTMENT .................................
5.1 EXTERIOR COVER REMOVAL.......................................................A555-21
5.2 STAPLE UNIT REMOVAL................................................................A555-21
5.3 GRIP ARM REPLACEMENT............................................................A555-22
XII
A555-
A555-
19
21
5.4 BIN REPLACEMENT........................................................................A555-23
5.5 TRANSPORT MOTOR REPLACEMENT..........................................A555-24
5.6 BIN JAM SENSOR ADJUSTMENT ..................................................A555-25
3-BIN SORTER (A849)
1. SPECIFICAT IONS..................................................................
2. COMPONENT LAYOUT.........................................................
2.1 MECHANICAL COMPONENT LAYOUT.............................................A849-2
2.2 DRIVE LAYOUT .................................................................................A849-3
2.3 ELECTRICAL COMPONENT DESCRIPTION....................................A849-4
3. DETAILED SECTION DESCRIPTIONS..................................
3.1 BASIC OPERATION...........................................................................A849-5
3.1.1 FACE-UP MODE .......................................................................A849-5
3.1.2 FACE-DOWN MODE.................................................................A849-6
3.2 1ST BIN UP/DOWN MECHANISM.....................................................A849-7
3.3 1ST BIN SIDE-TO-SIDE SHIFT MECHANISM...................................A849-8
3.4 PAPER FEED AND MISFEED DETECTION TIMING ........................A849-9
3.5 JAM DETECTION.............................................................................A849-11
4. REPLACEMENT AND ADJUSTMENT .................................
4.1 EXTERIOR COVER AND BIN REMOVAL........................................A849-12
4.2 TRAY LIFT/SHIFT MOTOR ASSEMBLY REMOVAL .......................A849-13
4.3 ENTRANCE MOTOR REPLACEMENT............................................A849-14
4.4 EXIT MOTOR REPLACEMENT........................................................A849-15
4.5 STACK HEIGHT SENSOR AND 1ST EXIT
SENSOR REPLACEMENT...............................................................A849-16
4.6 2ND / 3RD EXIT SENSOR AND INVERTER
SENSOR REPLACEMENT...............................................................A849-18
A849­A849-
A849-
A849-
1 2
5
12
FPU (A846)
1. SPECIFICAT IONS..................................................................
A846-
2. ELECTRICAL COMPONENT LAYOUT
AND DESCRIPTIONS...........................................................
3. SECTIONAL DESCRIPTIONS................................................
3.1 OVERVIEW ........................................................................................ A846-3
3.2 SHADING ...........................................................................................A846-4
3.3 MIRROR UNIT....................................................................................A846-5
XIII
A846­A846-
1
2 3
APPENDIX
1. TIMMING CHART
A4 SIZE B/W MODE......................................................................................1
A4 SIZE FULL COLOR MODE......................................................................2
A3 SIZE B/W MODE......................................................................................3
A3 SIZE FULL COLOR MODE......................................................................4
2. SP MODE TABLE
3. SC CODE TABLE
XIV
24 February, 1999 SPECIFICATIONS
0
9

1. OVERALL MACHINE INFORMATION

1.1 SPECIFICATIONS

1.1.1 MACHINE CONFIGURATION

A258 A259 A260
Operation Panel
Paper Tray Unit
Edit Function
Sorter/Stapler
A555
40-digit 4-line LCD Hard Key Type
500 sheets Duplex
No No Yes
Platen Cover
A749-00
Overall
Information
144 mm x 192 mm (10.4 inch) Color Touch Panel Display
ARDF
A663
A834
A849
Copier
Paper Tray Unit (500 sheets per tray)
A833
A832
FPU A846
FPU Table A7
2-1
I/F A848
A259V501.WMF
1-1
SPECIFICATIONS 24 February, 1999

1.1.2 GENERAL SPECIFICATIONS

Configuration: Desktop Copy Process: Dry electrostatic transfer system Resolution:400 dpi; Printer mode 600 dpi Gradations: 256 gradations Originals: Sheet/Book/Object Original Size: Maximum 11" x 17" /A3 Copy Paper Size:
Maximum Minimum
Paper Tray Feed (A258 only)
Bypass Feed
Copy Paper Weight:
Paper Tray Feed Bypass Feed Auto Duplex Tray
11" x 17" /A3 5 12" x 18"/305 mm x 457 mm A6(L)
17 to 28 lbs. 64 to 105 g/m 14 to 43 lbs. 52 to 160 g/m 17 to 28 lbs. 64 to 105 g/m
2 2 2
1/2
x 8
/A5(L)
1/2
Reproduction Ratios:
8
" x 11"LT/11" x 17"DLT
1/2
A4/A3 version
version Enlargement Full size Reduction Programmable
121, 129, 155, 200, 400% 115, 122, 141, 200, 400% 100% 100% 25, 50, 65, 73, 78, 85, 93% 25, 50, 65, 71, 75, 82, 93% 2 user ratios 2 user ratios
Zoom: From 25% to 400 % in 1% steps.
1-2
24 February, 1999 SPECIFICATIONS
Copying Speed:
8
" x 11" (S) /A4 11" x 17"/A3
1/2
Normal Mode
Full Color (4 scans) 6 cpm 3 cpm Single Color (C, M Y, K) A258: 21 cpm
A259/260: 28 cpm
A258: 11 cpm
A259/260: 14 cpm Single Color (B, G) 9 cpm 4.5 cpm Single Color (R) 7 cpm 3.5 cpm
OHP/Thick Paper Mode
Full Color (4 scans) 3 cpm 1.5 cpm Single Color (C, M Y, K) 5 cpm 2.5 cpm Single Color (G, B) 4 cpm 2 cpm Single Color (R) 3.5 cpm 1.5 cpm
Duplexing: Same as Normal Mode speed in the above table Printer Speed: 2/3 the speeds shown in the above table
First Copy Time (A258/259/260):
Overall
Information
8
" x 11" (S) /A4
1/2
Normal Mode
Full Color (4 scans) 22.4 seconds Single Color (K) 8 seconds Single Color (C, M, Y) 10 seconds Single Color (B, G, R) 16 seconds
OHP/Thick Paper Mode
Full Color (4 scans) 35 seconds Single Color (K) 23 seconds Single Color (C, M, Y) 25 seconds Single Color (B, G, R) 27 seconds
Warm-up Time: Approx. 7 minutes (at 68°F / 20°C)
1-3
SPECIFICATIONS 24 February, 1999
Duplexing:
Basic Manual Duplex
Model (A258):
Basic Auto Duplex
Model (A259):
Edit Auto Duplex Model
(A260):
Manual duplexing in full color and single color modes Manual & auto duplexing in full color and single color modes Manual & auto duplexing in full color and single color modes
Duplexing can be done on 64-105 g/m2 paper. Manual duplexing can be done through the
bypass table only, and the user should press the Duplex Side 2 key before copying the reverse side.
Non-Reproduction Area:
Leading Edge: Side:
0.2" ± 0.08" (5 mm ± 2 mm)
0.08" ± 0.08" (2 mm ± 2 mm)/ Total less than 0.16" (4 mm)
Trailing Edge:
2.0 mm + 2.0/-1.5 mm Copy Number Input: Number keys, 1 to 99 Copy Number Input
(Auto Duplex):
Number keys Single Color - 1 to 50: smaller than A3, 11" x 17"
1 to 30: A3, 11" x17"
Full Color 1 to 20: all sizes Image Density: Auto/Manual (9 steps) Automatic Reset: Yes (10 to 990 seconds or Off) Paper Capacity: Tray:
500 sheets x 1 tray (Basic Manual Duplex Model: A258)
Bypass:
Normal paper (80 g/m2/20 lb) 50 sheets OHP 20 sheets
Adhesive paper 1 sheet Toner Replenishment: Toner Addition (K, Y, C, M) (220 g/cartridge) Copy Tray Capacity: 100 sheets (11" x 17"/A3 and smaller) Power Source: US: 120V/12A/60Hz,
Europe/Asia: 220-240V/8A/50,60 Hz Taiwan: 110 V/12A/60Hz
Maximum Power
1.5 kVA
Consumption:
1-4
24 February, 1999 SPECIFICATIONS
Dimensions (without Platen Cover):
Width Depth Height
A258
A259
A260
Height: 1,018 mm with optional paper tray unit
620 mm
24.4"
620 mm
24.4"
620 mm
24.4"
680 mm
26.8"
757 mm
29.8"
757 mm
29.8"
602 mm
23.7"
602 mm
23.7"
602 mm
23.7"
Weight: Manual Duplex: 105 kg (231.3 lbs.)
Auto Duplex: 108 kg (237.9 lbs.)
Optional Equipment: Automatic Document Feeder (ARDF): A663
Sorter Stapler: A555 (10 bins), A834 (20 bins), Sorter: A849 (3 bins) Film Projector: A846 Holder for Film Projector Unit: A702-19 Paper Tray Unit: A832 (2 trays), A833 (3 trays) Key Counter Platen Cover: A749-00 Original Tray: A430-07 (Type F)
Overall
Information
1-5
SPECIFICATIONS 24 February, 1999

1.1.3 PLATEN/ARDF ORIGINAL SIZE DETECTION

Size (width x length)
[mm]
A3 (297 x 420) L No Yes No Yes B4 (257 x 364) L No Yes No Yes A4 (210 x 297) L No Yes Yes Yes A4 (297 x 210) S No Yes Yes Yes B5 (182 x 257) L No Yes No Yes B5 (257 x 182) S No Yes No Yes A5 (148 x 210) L No No* No Yes A5 (210 x 148) S No No No Yes B6 (128 x 182) L No No No Yes B6 (182 x 128) S No No No Yes 11" x 17" (DLT) Yes No Yes Yes 11" x 15" No No Yes No 10" x 14" No No Yes Yes
8.5" x 14" (LG) Yes No Yes No
8.5" x 13" (F4) No No Yes Yes
8.25" x 13" No No No No 8" x 13"(F) No Yes Yes No
8.5" x 11" (LT) Yes No Yes Yes 11" x 8.5" (LT) Yes No Yes Yes 8" x 10.5" No No No No 8" x 10" No No Yes No
5.5" x 8.5" (HLT) No* No Yes No
8.5" x 5.5" (HLT) No No Yes No A6 (105 x 148) L No No No No
Inches Metric Inches Metric
Platen ARDF
*: For A5 lengthwise/HLT, SP4-303 can be used to select “Cannot detect
original size” or “A5 lengthwise/5.5" x 8.5"(HLT)”.
1-6
24 February, 1999 SPECIFICATIONS

1.1.4 COPY PAPER SIZE

Optional
S.Stapler
Size
(width x length)
[mm]
Trays in the main body Bypass
Paper Tray (A258)
Duplex Tray (A259/A260)
Inches Metric Inches Metric
All
versions
(A258/
259/260)
A3 (297 x 420) L No Yes Yes Yes Yes Yes B4 (257 x 364) L No Yes Yes Yes Yes Yes A4 (210 x 297) L Yes Yes Yes Yes Yes Yes A4 (297 x 210) S Yes Yes Yes Yes Yes Yes B5 (182 x 257) L No Yes No Yes Yes Yes B5 (257 x 182) S No Yes No Yes Yes Yes A5 (148 x 210) L No Yes No No Yes Yes (1) A5 (210 x 148) S No No Yes Yes Yes Yes (2) B6 (128 x 182) L No No No No Yes Yes (1) B6 (182 x 128) S No No No No No No 12” x 18” No No No No Yes Yes (3) 11" x 17" (DLT) Yes Yes Yes Yes Yes Yes 11" x 15" Yes No Yes No Yes Yes 10" x 14" Yes No Yes No Yes Yes
8.5" x 14" (LG) Yes No Yes No Yes Yes
8.5" x 13" (F4) Yes Yes Yes Yes Yes Yes
8.25" x 13" No No Yes Yes Yes Yes 8" x 13"(F) No No Yes Yes Yes Yes
8.5" x 11" (LT) Yes Yes Yes Yes Yes Yes 11" x 8.5" (LT) Yes Yes Yes Yes Yes Yes 8" x 10.5" No No Yes No Yes Yes 8" x 10" Yes No Yes Yes Yes Yes
5.5" x 8.5" (HLT) No No No No Yes Yes (1)
8.5" x 5.5" (HLT) Yes No Yes Yes Yes Yes ( 2) A6 (105 x 148) L No No No No Yes Yes (2)
Overall
Information
Yes (1): Stapling is not allowed. Yes (2): Using the proof tray only. Sorter bins cannot be used.
Yes (3): 20-bin sorter (A834): Stapling is not allowed.
10-bin sorter (A555): Not available
1-7
SPECIFICATIONS 24 February, 1999

1.1.5 APS PAPER SIZES AVAILABLE

— For metric machines —
200
173
163
141
122
115
100
93
87
82
75
71
65
61
57
50
~
51
A3
B4
A4L B5L
A5L A4S
B5S
A5S
8.5
x 11
11
x 8.5
8.5
x 13
11
x 15
~
~
~
~
~
~
~
~
~
~
~
~
~
174
164
142
123
116
101
94
88
83
76
72
66
——————A3—B4——A4L —————A3B4——A4L ———A3B4—A4L
——A3B4—A4LB5L——A5L——————
A3B4—A4LB5L—A5L—————————
——————
S
A4SB5
—
————— ——— — — — — — — — — — — — — ————A3— — — — — — —
A4SB5
8.5
B5L——A5L————
x13
A4
S S
A5
S
8.5
x11
11
x8.5
8.5
x13
11
x15
B5
—
S
—— ————————— — — — — — — — — — — — — — — — — — — ——A4LB5L————A5L — — — — — — — — —
8.5
B5L — — A5L —
x13
——
A5
S
A5
S
——————
~
62
58
8.5 B5L — A5L
x13
————
~
: Not allowed in platen cover mode. L: Lengthwise S: Sideways
— For standard machines (in inches)—
11x17 11x15
8.5x14
8.5x11
5.5
x8.5
8.5
x5.5
11x8.5
8x10
10x14
8x13
200
~
177
—————11x1711x1711x15 — — — — — 11x15 11x15 — ———— — — 11x17 —
11
x17
———
————— — — — 11x17 10x14 8x10 — — — — —————10x14— ———11x17—8x13————
176
~
156
11
x15
155
~
130
8.5
x14
129
~
122
8.5
x11
11
x8.5
121
~
101
11
x17
—
—
100
~
94
8.5
x14
8.5
x11
5.5
x8.5
8.5
x5.5
11
x8.5
93
~
86
—— ————
——————
——————
————
85
~
78
8.5 x14
77
~
75
8.5
x14
8.5
x14
8.5
x11
8.5
x11
74
~
66
—
8.5
x11
——
——
65
~
51
8.5 x11
—
5.5
x8.5
8.5
x5.5
5.5
x8.5
5.5
x8.5
50
~
5.5
x8.5
5.5
x8.5
5.5
x8.5
—
— —
5.5
x14
—
: Not allowed in platen cover mode.
1-8
24 February, 1999 SPECIFICATIONS
NOTE:
1) The tables indicate the copy paper size for each original for 50 to 200 % zoom ratios.
2) After specifying a zoom ratio, APS automatically selects a paper size that guarantees the quality of the magnified copy image, if there is a paper size available for the equivalent standard reproduction ratio.
3) If there is no paper that corresponds to the detected size, the machine displays the message "Set xx paper in tray" and stops the job (copying is still possible).
4) For "—" in the above tables, the machine displays the message "Cannot detect original size" and stops the job (copying is still po ssible). The selected paper feed tray does not change.
5) When less than 49% or more than 201% is selected, APS behaves in accordance with note 4 above.
6) APS also supports the by-pass feed table (except for non-standard paper sizes). When the paper size selected by APS can only be fed from the by-pass feed table, the machine displays a warning to instruct the user to use the by-pass feed table.
7) APS does not support A6, B6, and A5.
Overall
Information

1.1.6 NOISE EMISSION

Sound pressure level
The measurements were made in accordance with ISO 7779 at the operator positions.
Copier only Full system*
Less than 38.5 dB (A) Less than 55 dB (A)
*: Full system: Copier with document feeder, 500 sheets x 3 trays unit, FPU,
and a sorter stapler.
Sound power level
The measurements were made in accordance with ISO 7779.
Copier only Full system*
Stand-by Less than 55 dB (A) Less than 59 dB (A)
Copying
(This value is for the
black copy mode.)
*: Full system: Copier with document feeder, 500 sheets x 3 trays unit, FPU,
and a sorter stapler.
Less than 68 dB (A) Less than 72 dB (A)
1-9
SPECIFICATIONS 24 February, 1999

1.1.7 POWER CONSUMPTION

(1) Maximum power cons umption
1.5 kVA
(2) Average power consumption
A258/A259/A260 Copiers
Standby
Warm-up
Copying
Energy Saver Mode
0.4 kW
1.3 kW
1.1 kW (B/W A4 å)
0.6 kW (full color A4 å) Value for standby minus 25 W

1.1.8 DISPLAY EDITOR SPECIFICATIONS

Scanned image
Displayed image
Area specification procedure
•
The copier's scanner scans the image.
•
Maximum A3/DLT (11" x 17"): Redu ced image display
•
144 x 192 mm, 256 colors (8 bits/dot)
•
640 x 480 dots, 0.33 mm/dot
Reduces the dpi of scanned images to approximately 25 dpi and displays the entire image
•
Zoom display: 4 levels (200%, 264%, 400%, 528%)
•
Move the arrow on the screen by using the cursor key
and enter a point by pressing the coordinate entry key.
1-10
24 February, 1999 MECHANISM OVERVIEW

1.2 MECHANISM OVERVIEW

1.2.1 IMAGE GENERATION PROCESS

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A259V110.WMF
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MECHANISM OVERVIEW 24 February, 1999
(1) Drum charge
The charge corona applies a negative charge to the OPC drum and the grid ensures that this charge is even.
(2) Quenching
After cleaning, the OPC is fully exposed to light from an array of red LEDs, quenching the residual charge on the OPC drum in preparation for the next copy cycle.
(3) Drum Cleaning
The cleaning brush increases drum cleaning efficiency by applying lubricant to the OPC drum. The cleaning blade scrapes the residual toner off the OPC drum.
(4) PCC (Pre-cleaning corona)
The PCC discharges the photoconductor drum and applies AC and negative DC to reduce the charge holding the residual toner to the drum, thereby improving the efficacy of the cleaning brush.
(5) Belt transfer
Positive charge applied to the back of the transfer belt transfers the toner image on the OPC drum to the transfer belt.
(6) Paper transfer
The negatively charged toner image is transferred to the paper by giving a positive charge to the back of the paper while the paper and transfer belt are held in close contact.
(7) Paper separation corona
After transfer, the separation corona quenches the negative charge on the paper to reduce the attraction between the belt and paper. The curvature of the belt causes the paper to separate from the transfer belt.
(8) Belt cleaning unit and lubricant application brush
The brush applies lubricant, which makes it easier for the counter blade to scrape excess toner off the transfer belt.
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24 February, 1999 MECHANISM OVERVIEW
(9) ID sensor
The ID sensor detects the density of the sensor patches developed on the OPC drum. The signal from the ID sensor is used for process control and toner supply control.
(10) Development
The latent image on the drum attracts the negatively charged toner. Toner is preferentially attracted to those places on the drum surface where the laser reduced the negative charge. The development units for each color are included in the revolver unit.
(11) Potential sensor
The potential sensor detects the electrical potential (the strength of the electric field) on the photoconductor dru m for process contr ol.
(12) Laser exposure
The polygon mirror reflects the laser beam emitted from the laser diode and projects it onto the drum through the f-theta lens, drum mirror, and toner shield glass. The laser output varies in intensity to correspond to the image data, and this forms a latent image on the drum.
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