Ricoh FT7770 User manual

RICOH FT7770
SERVICE MANUAL
RICOH COMPANY, LTD.

TABLE OF CONTENTS
SECTION 1:
OVERALL MACHINE INFORMATION
MAIN SPECIFICATIONS
GUIDE TO COMPONENTS
1. Copier Exterior
2.
Copier Interior
3. Operation Panel
HOW TO USE THE GUIDANCE DISPLAY
DISPLAY CONTROL KEYS
THE COPY CYCLE
COPY PROCESSES AROUND THE DRUM
PAPER PATH
MECHANICAL COMPONENT LAYOUT
ELECTRICAL COMPONENT LAYOUT
1-1
1-4
1-8
1-10
1-14
1-15
1-16
1-17
1-18
1-20
1-22
DRIVE LAYOUT 1-26
ELECTRICAL COMPONENT DESCRIPTIONS
1-27
OVERALL MACHINE CONTROL
1-34
AC AND DC POWER DISTRIBUTION
1-35
SECTION 2: DETAILED SECTION DESCRIPTION
DRUM
1.
2.
3.
CHARGE
1.
2.
3.
4.
ERASE
1.
2.
3.
Selenium Drum
Drum Thermistor Unit
Drum Heater Circuit
Corona Unit
Corona Unit Ventilation
Wire Cleaner
Charge Power Pack
Introduction
Side Erase and leading/Trailing Edge Erase
Erase Lamp Circuit
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10

EXPOSURE
1.
2.
3.
4.
5.
6.
Introduction
Exposure Lamp Unit
Automatic Image Density Sensing
Lamp Regulator
Optics Cooling Fan
Anticondensation Heater
SCANNER DRIVE
1. Introduction
2. Scanner Motor Control
LENS AND MIRROR POSITIONG
1. Lens Positioning
2. Second Scanner Shift
3.
Lens/Mirror Position Initialization
DEVELOPMENT UNIT
1. Introduction
2. Drive Mechanism
3.
Cross Mixing
4.
Knocking Solenoid
5. Toner Density Control
6. Image Density Control
7.
Bias for ID Sensing
8. Bias Circuit
9. Development Drive Motor
TRANSFER AND SEPARATION
1.
2.
3.
4.
5.
6.
7.
CLEANIG
1.
2.
3.
4.
5.
6.
7.
PTC (Pre-TransferŽCorona) and PTL
(Pre-Transfer Lamp)
Image Transfer
Paper Separation
TC/SC Wire Cleaner
Pick-off Pawls
PTC Power Pack and PTL Stabilizer
Transfer/Separation Power Pack
Introduction
Drive Mechanism
Cleaning Blade Pressure Mechanism
Used Toner Removal
Cleaning Solenoid Circuit
PCC Power Pack
Cleaning Bias Power Pack
QUENCHING
1.
Introduction
2. Pre-Quenching corona Circuit
3. Quenching Lamp Circuit
2-11
2-12
2-13
2-14
2-16
2-16
2-17
2-18
2-20
2-22
2-23
2-24
2-26
2-27
2-28
2-29
2-33
2-37
2-38
2-40
2-42
2-42
2-43
2-44
2-45
2-46
2-47
2-49
2-50
2-51
2-53
2-55
2-56
2-57
2-58
2-59
2-60

PAPER FEED
1. Introduction
2.
Feed Unit Mechanism
3.
FER Operation
4.
Paper Tray Drive Mechanism
5.
Friction Roller Reverse Mechanism
6.
Paper Volume Detection
7. Guide Posts and Paper Size Detection
8. Tray Lock and Positioning
9. Paper Size Board
10.
220/240-Volt Paper Size Sensor
11. Tray Motor Circuit
12. Paper Tray Heaters
13. Tray Set Detection
VERTICAL TRANSPORT AND REGISTRATION
1.
Introduction
2.
Drive Mechanism
3.
Jam Check Timing
PAPER TRANSPORT
1.
Introduction
2.
Vacuum Fan
FUSING
1.
Introduction
2.
3.
4.
5.
6.
INVERTER
1.
2.
3.
4.
5.
Circuit
Pressure Mechanism
Oil Supply
Oil End Sensor
Drive Mechanism
Fusing Lamp Circuit
Introduction
Operation
Inverter Rollers
Inversion
Junction Gate
DUPLEX TRAY
1.
Introduction
2.
Drive Mechanism
3. Fork Gate
4.
Paper Positioning
5.
Bottom Plate Mechanism
6. Duplex Paper Feed
7. Duplex Motor Circuit
TOP UNIT
1.
Release Mechanism
2. Drum Support
2-61
2-62
2-63
2-64
2-65
2-66
2-67
2-68
2-69
2-70
2-71
2-72
2-73
2-74
2-76
2-78
2-79
2-80
2-81
2-82
2-83
2-84
2-85
2-86
2-88
2-89
2-91
2-92
2-93
2-94
2-96
2-96
2-97
2-98
2-99
2-100
2-101
2-102

OTHER CIRCUITS
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Counters
Photosensor
Photointerrupters
Solenoids
Magnetic Clutches
Monitor Board
Operation Panel
AC Drive Board
Ozone Fan
Corona Cleaner
2-103
2-105
2-106
2-107
2-108
2-109
2-110
2-111
2-112
2-113
SECTION 3:
INSTALLATION
INSTALLATION REQUIREMENT
1. Environment
2. Minimum Space Requirement
3. Machine Level
4. Power Source
3-1
3-2
3-3
3-3
INSTALLATION
1. Unpacking
2.
Accessory Check
3. Installation Procedure
3-4
3-5
3-6
KEY COUNTER HOLDER INSTALLATION
3-15
A3/11” x 17” COUNTER INSTALLATION 3-16
MODIFYING MAIN TRANSFORMER VOLTAGE (220V to 240V)
3-17
PREPARATION FOR TRANSPORTING THE COPIER
3-18
SECTION 4:
SERVICE TABLES
PM TABLE
4-1
LUBRICATION PARTS 4-8
SERVICE TABLES
1. Test Points
2.
Variable Resistors
3. Dip Switches
4-11
4-11
4-12
4-12
SERVICE REMARKS 4-13
SPECIAL TOOLS AND LUBRICANTS
4-18
SECTION 5: REPLACEMENT AND ADJUSTMENT
EXTERIOR COMPOMENT REMOVAL
1. Exposure Glass and Operation Panel Removal
5-1
2.
Top Plate Removal
5-2

DRUM AND CHARGE
1. Drum Replacement
2. Drum Thermoswitch and Heater Replacement
3. Charge Corona Wire and
Cleaner Pad Replacement
EXPOSURE
1. Scanner Drive Wire Replacement
2. Lens Drive Wire Replacement
3. Exposure Lamp Unit Removal
DEVELOPMENT
1. Development Unit Removal
2.
Developer Replacement
3. Development Roller and
Paddle Roller Removal
4. Adjustment of Development Roller Gaps
5.
Image Density Sensor Cleaning and Removal
6. Image Density Sensor Adjustment
TRANSFER AND PICK-OFF
1.
2.
3.
4.
5.
6.
7.
CLEANING
1.
2.
3.
4.
5.
6.
FUSING
1.
2.
3.
4.
5.
6.
7.
8.
Transport Unit Removal
Transfer Ozone Filter Replacement
Pre-transfer Corona Wire Replacement
Transfer/Separation Corona Wire
and Cleaner Pad Replacement
Transport Belt Replacement
Registration Sensor Replacement
Pick-off Pawl Unit Removal
Cleaning Blade and Brush Replacement
Pre-cleaning Corona Wire Replacement
Toner Collection Coil Replacement
Cleaning Blade pressure Adjustment
Blade Cleaner and Bias Roller Blade Replacement
Pre-quenching Corona Wire Replacement
Fusing Unit Removal
Hot Roller Stripper Replacement
Cleaning Blade, Metering Blade,
and Oil Supply Pad Replacement
Hot Roller Replacement
Pressure Roller Replacement
Thermistor and Thermofuse Replacement
Fusing Pressure Adjustment
Hot Roller Temperature Adjustment
5-3
5-4
5-5
5-6
5-16
5-20
5-21
5-22
5-23
5-25
5-27
5-28
5-29
5-30
5-31
5-32
5-33
5-34
5-35
5-36
5-37
5-38
5-39
5-40
5-41
5-42
5-43
5-44
5-46
5-48
5-49
5-50
5-52

INVERTER
1.
Inverter Roller Clutch Disassembly
and Adjustment
2. Return Pinch Roller Solenoid Adjustment
3.
Inverter Gate Solenoid Adjustment
PAPER FEED
1.
Paper Feed Unit Removal
2. Pick-up Roller Replacement
3. Feed Roller Replacement
4. Friction Roller Replacement
5. Paper Tray Unit and Cover Removal
6. Paper Tray Drive Wire Replacement
7.
Vertical Transport Unit Removal
DUPLEX TRAY
1. Duplex Tray Removal
2. Paper Feed Roller Replacement and Adjustment
3.
Pick-up Roller Replacement
4. Friction Roller Replacement
5. Bottom Plate Pressure Clutch Disassembly
6.
Duplex Paper Sensor Adjustment
7. Duplex Side Plate Drive Wire Replacement
COPY IMAGE
1. Horizontal Magnification Adjustment
2. Side-to-Side Registration Adjustment
3. Uneven Exposure Adjustment
4. Light Intensity Adjustment
5. Auto Density Sensor Adjustment
CORONA CURRENT ADJUSTMENT
1. Corona Current Adjustment Preparation
2. Charge Corona
3. Pre-transfer Corona
4. Transfer Corona
5. Separation Corona
6. Pre-cleaning Corona
7.
Pre-quenching Corona
SERVICE PROGRAM MODE
1. Factory Settings
2. How to access SP41 to SP53
3. Service Program Functions
5-53
5-55
5-56
5-57
5-58
5-59
5-60
5-61
5-62
5-65
5-66
5-67
5-68
5-69
5-70
5-71
5-72
5-73
5-74
5-75
5-76
5-77
5-78
5-80
5-81
5-82
5-83
5-84
5-85
5-86
5-87
5-88

SECTION 6: ELECTRICAL DATA
MAIN BAORD SCHEMATIC 1
6-1
MAIN BAORD SCHEMATIC 2
6-2
MAIN BAORD SCHEMATIC 3 6-3
DC DRIVE BOARD SCHEMATIC 6-4
SCANNER MOTOR CONTROL BOARD SCHEMATIC
6-5
MAIN MOTOR CONTROL BOARD SCHEMATIC
6-6
LENS/MIRROR MOTOR CONTROL BOARD SCHEMATIC
6-6
POWER SUPPLY UNIT BLOCK DIAGRAM
6-7
AC DRIVE BOARD SCHEMATIC
6-9
OPERATION PANEL-CPU BOARD SCHEMATIC
6-10
SECTION 7: DOCUMENT FEEDER
SPECIFICATIONS
7-1
MECHANICAL COMPONENT LAYOUT
ELECTRICAL COMPONENT LAYOUT
ELECTRICAL COMPONENT DESCRIPTIONS
BASIC OPERATION
1. Single-Sided Original Feed
2. Two-Sided Original Feed
3. Computer From Feed
FEED-IN UNIT
1. Original Feed-in
2. Drive Mechanism
3. Pressure Mylar Release
4. Separation of Originals
5. Relay Roller Pressure Release
TRANSPORT AND INVERSION UNIT
1. Original Transport
2. Transport Belt Drive Mechanism
3. Original Inversion and Feed-out
4.
Inversion and Feed-out Drive Mechanism
5. Lift Mechanism
7-2
7-3
7-4
7-5
7-7
7-9
7-10
7-12
7-14
7-15
7-16
7-17
7-18
7-19
7-20
7-22
COMPUTER FORM FEED
7-23

ELECTRICAL OPERATION
1.
2.
3.
4.
5.
6.
7.
8.
SERVICE
1.
2.
3.
4.
5.
6.
7.
Interface With Copier
Feed-in Sensor
Motor Control
Original Size Sensing
DF Misfeed Check
Application Switch
Form Size Switch
CFF Feed Hole and Set Sensors
TABLES
Test Point Table
Variable Resistor Table
LED Table
DIP Switch Table
Blown Fuse Table
Switch Failure Table
Sensor Failure Table
REPLACEMENT AND ADJUSTMENT
1. Separation Roller Replacement
2. Friction Tab Replacement
3. Pick-up Roller Replacement
4. Transport Unit Cover Removal
5. Feed Belt Removal
6. Inverter Entrance and Inverter
Sensor Replacement
7.
Turn Roller Replacement
7-24
7-25
7-26
7-27
7-29
7-30
7-31
7-32
7-33
7-33
7-34
7-35
7-36
7-36
7-37
7-38
7-39
7-40
7-43
7-44
Registration
7-45
7-46
8.
Exit Roller/Pull-out Roller Replacement
7-47
9. Inverter Roller Replacement 7-48
10. DF Removal 7-50
11. Original Skew Adjustment 7-51
12. Original Leading Edge Adjustment 7-52
13. Registration Sensor
Threshold Level Adjustment
7-53
14. Feed-in, Belt, and Inverter Motor 7-54
Speed Adjustment
TIMING CHART 1
7-55
TIMING CHART 2 7-56
DF MAIN BAORD SCHEMATIC
7-57
SECTION 8:
LARGE CAPACITY TRAY
SPECIFICATIONS 8-1
MECHANICAL COMPONENT LAYOUT 8-2
ELECTRICAL COMPONENT LAYOUT 8-3
ELECTRICAL COMPONENT DESCRIPTIONS 8-4

MECHANICAL OPERATION
1. Basic Operation 8-5
2. Feed Unit Mechanism 8-6
3.
Tray Drive Mechanism
8-7
4. Friction Roller Reverse Mechanism 8-8
5. Paper Volume Detection 8-8
6. Guide Plate and Paper Size Detection 8-9
7.
Tray Lock and Positioning
8-10
ELECTRICAL OPERATION
1. Tray Motor Circuit 8-11
2. Paper Tray Heater 8-12
3. Tray Set Detection 8-12
INSTALLATION
1. Accessory Check
8-13
2. Installation Procedure
8-14
REPLACEMENT AND ADJUSTMENT
1. Paper Feed Unit Removal 8-18
2. Pick-up Roller Replacement
8-19
3. Feed Roller Replacement 8-20
4. Friction Roller Replacement 8-21
5. Paper Tray Unit Removal
8-22
6. Paper Tray Drive Wire Replacement
8-23
SECTION 9: SORTER
SPECIFICATIONS 9-1
MECHANICAL COMPONENT LAYOUT 9-2
ELECTRICAL COMPONENT LAYOUT 9-3
SORTER DRIVE
9-4
ELECTRICAL COMPONENT DESCRIPTIONS
9-6
MECHANICAL OPERATION
1. Basic Operation
9-8
2. Transport Belt Mechanism
9-10
3.
Turn Gate
9-11
4. Misfeed Clearance Release Mechanism
9-12
5. Manual Feed
9-13
6. Bin Gate Operation
9-14
ELECTRICAL OPERATION
1. Interface with The Copier and AC Power
9-15
2. Timing Exit, and Manual Feed Sensors
9-16
3. Bin and Jam Sensors 9-17
4. Bin and Turn Gate Solenoids
9-18
5. Safety Switches
9-19
6.
Distribution Drive Clutch
9-20

INSTALLATION
1.
Accessory Check
2. Installation Procedure
SERVICE TABLES
1. Sorter Main Board
2. Sorter Interface Board
REPLACEMENT AND ADJUSTMENT
1. Distribution Unit Removal
2. Transport Unit Removal
3. Transport Belt Replacement
4.
Jam Sensor and Bin Copy Sensor Adjustment
5. 50Hz/60Hz Modification
SORTER MAIN BOARD SCHEMATIC
SECTION 10: SORTER CONNECTOR UNIT
9-21
9-22
9-25
9-26
9-27
9-29
9-30
9-33
9-34
9-35
SPECIFICATIONS
COMPONENT LAYOUT
MECHANICAL OPERATION
ELECTRICAL OPERATION
1. Circuit
2.
Main Board
3.
DC Power Supply
4.
Sensor Input Circuit
5. Bin Drive Circuit
INSTALLATION
1.
Accessory Check
2.
Installation Procedure
REPLACEMENT AND ADJUSTMENT
1. Tension Adjustment
2. 50Hz/60Hz Modification (Sorter Connector Unit)
SECTION 11: SORTER STAPLER
10-1
10-2
10-2
10-3
10-3
10-4
10-5
10-6
10-7
10-8
10-15
10-16
SPECIFICATIONS
11-1
COMPONENT LAYOUT
1.
Mechanical Component Layout
11-2
2. Electrical Component Layout
11-3
3. Drive Layout
11-5
ELECTRICAL COMPONENT DESCRIPTIONS
11-7
OVERALL MACHINE CONTROL
11-11

BASIC OPERATION
MECHANICAL OPERATION
1. Transport Section
2.
Turn Gate Section
3.
Distribution Section
4.
Side Plate
5. Staple Unit
6. Misfeed Clearance
ELECTRICAL OPERATION
1. Bin/Jam sensor
2.
Safety Switch
Release Mechanism
3. Service Call Conditions
INSTALLATION
1.
Accessory Check
2.
Installation Procedure
SERVICE TABLES
1. Test Point Table
2.
Variable Resister
3.
LED Table
4. DIP Switch Table
Table
REPLACEMENT AND ADJUSTMENT
1.
Stapler Removal
2. Staple Positioning Adjustment
3. Gripper Assembly Removal
4.
Gripper Rubber Replacement
5. Gripper Solenoid Adjustment
6.
Jammed Staple Removal
7. Staple Unit Drive Belt and
Side Plate Drive Belt Tension Adjustment
8.
The Other Drive Belts Tension Adjustment
9.
Jam Sensor and Bin Copy Sensor Adjustment
TIMING CHART
SORTER STAPLER MAIN BOARD BLOCK DIAGRAM
SORTER STAPLER MAIN BAORD SCHEMATIC
SECTION 12: MENU READER
11-12
11-13
11-14
11-15
11-16
11-18
11-23
11-24
11-25
11-27
11-29
11-30
11-34
11-34
11-34
11-34
11-35
11-37
11-38
11-39
11-40
11-41
11-42
11-43
11-44
11-45
11-46
11-47
SPECIFICATIONS 12-1
OVERALL MACHINE CONTROL
12-2
DATA FORMAT
12-3

BASIC OPERATION
1.
Job Sheet Reading 12-4
2. Menu Reader Indicator Lights
12-6
3. Processing Errors
12-7
INSTALLATION
1. Accessory Check 12-8
2. Installation Procedure
12-9
REPLACEMENT AND ADJUSTMENT
Lower Transport Roller Replacement
12-11
MENU READER CONTROL BOARD SCHEMATIC
12-12
SECTION 13: TROUBLESHOOTING
INTRODUCTION
COPY QUALITY
White Spots
Hat Image
Blank Area
Wrinkled Copy
Unfused Copy
Horizontal White Lines (Bands)
Jitter
Hollowing Out
Fuzzy Copy
Vertical Black Lines (Bands)
Uneven Density
Vertical Black Lines (Bands)
Black Spots
Dirty Background
Black Image
Black Copy
Light Copy
PAPER JAM/MISFEED
Pick-off Jam
False Paper Jam
Duplex Tray Jam
Paper Feed Jam
Registration Jam
Exit Jam
Transport Unit Jam
Fusing Jam
FUNCTIONAL PROBLEM
Not Ready
Abnormal Indications
Please Wait Condition
13-1
13-2
13-3
13-4
13-5
13-6
13-6
13-7
13-8
13-8
13-9
13-11
13-14
13-18
13-19
13-22
13-22
13-24
13-26
13-27
13-27
13-29
13-30
13-30
13-30
13-31
13-32
13-32
13-34

DF
Original Jam
No Display
Abnormal Indication
SORTER
Not Ready
False Jam
Jam in Sorter
Others
SERVICE CALL CONDITIONS
SC - 1 Exposure
SC - 2 Drum Thermistor
SC - 3 Drum Heater
SC - 4 Drum Overheat
SC - 5 Fusing Thermistor
SC - 6 Fusing Lamp
SC - 7 Fusing Overheat
SC - 8 Temperature Fuse
SC - 9 Optics Encode
SC - 10 Home Sensor
SC - 11 Scanner Velocity
SC - 12 Scanner Return
SC - 13 Total Counter
SC - 14 High Voltage Leak
SC - 15 Lens Drive Lock
SC - 21 Paper Feed Unit
SC - 22 Option Tray Paper Feed Unit
SC - 23 Upper Tray
SC - 24 Lower Tray
SC - 25 Option Tray
Service Call - Sorter with Stapler
13-35
13-35
13-36
13-37
13-37
13-38
13-38
13-39
13-41
13-42
13-43
13-44
13-44
13-45
13-46
13-47
13-48
13-49
13-50
13-50
13-51
13-52
13-53
13-53
13-54
13-55
13-56
13-57
DEFECTIVE SENSOR TABLE
Table
13-60

SECTION 14: SORTER/STAPLER CONNECTOR UNIT
1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-1
2. COMPONENT LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-2
3. MECHANICAL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-3
4. ELECTRICAL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-4
5. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-5
5.1 ACCESSORY CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-5
5.2 INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-6
5.2.1 First Sorter/Stapler Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-6
5.2.2 Second Sorter/Stapler Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-12
5.3 50Hz-60Hz MODIFlCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-16
6. REPLACEMENT AND ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . 14-17
6.1 TENSION ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-17
SECTION 15: FT7870 SERVICE MANUAL
l. SPECIFICATIONS (Compared with F21) . . . . . . . . . . . . . . . . . . . . . . 15-1
2. GUIDE TO COMPONENTS (Compared with F21) . . . . . . . . . . . . . . . 15-2
2.1 OPERATION PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-2
2.2 ELECTRlCAL/MECHANlCAL COMPONENT LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . 15-3
2.3 DRIVE LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-4
3. SECTIONAL DESCRIPTIONS (Compared with F21) . . . . . . . . . . . . . 15-5
3.1 PROCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-5
3.1.1 Drum Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-5
3.1.2 Rest Time Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-5
3.1.3 Toner End Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-6
3.2 FUSING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-6
3.2.1 Fusing Efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-6
3.2.2 Counter Measure for Toner Build Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-7
4. INSTALLATION AND OPTION INTERCHANGEABILITY . . . . . . . . . . 15-8
4.1 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-8
4.2 OPTION INTERCHANGEABILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-8
5. SERVICE TABLE (Compared with F21) . . . . . . . . . . . . . . . . . . . . . . . 15-9

5.1 PM TABLE (Differences Between F21 and F22) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-9
5.2 VARIABLE RESISTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-9
5.3 SERVICE REMARKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-10
6. ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-11
6.1 IMAGE DENSITY SENSOR/AUTO DENSITY SENSOR ADJUSTMENT . . . . . . . . . . . 15-11
6.2 FUSING UNIT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-11
6.3 HOW TO ACCESS THE SP MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-12
6.4 ADDITIONAL SP MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-12
6.5 SP MODE FACTORY SETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-13
6.6 DRUM CURRENT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-13
7. ELECTRICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-15
7.1 TIMING CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-15
8. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-17
8.1 SERVICE CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-17
8.2 HOW TO RESET THE OPTICS AND FUSING SC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-17

SECTION 1
OVERALL MACHINE
INFORMATION

CONTENTS
MAIN SPECIFICATIONS
GUIDE TO COMPONENTS
1. Copier Exterior
2.
Copier Interior
3. Operation Panel
HOW TO USE THE GUIDANCE
DISPLAY CONTROL KEYS
THE COPY CYCLE
1-1
1-4
1-8
1-10
DISPLAY 1-14
1-15
1-16
COPY PROCESSES AROUND THE DRUM
PAPER PATH
MECHANECAL COMPONENT LAYOUT
ELECTRICAL COMPONENT LAYOUT
DRIVE LAYOUT
ELECTRICAL COMPONENT DESCRIPTIONS
OVERALL MACHINE CONTROL
AC AND DC POWER DISTRIBUTION
1-17
1-18
1-20
1-22
1-26
1-27
1-34
1-35

30 April, ’89
MAIN SPECIFICATIONS
- Item - - Specifications -
Configuration:
Console
Copying Process: Dry electrostatic transfer system
Original Feed: Automatic reversing
document feeder (ARDF)
Computer/Continuous form feeder (CFF)
Original Size: Maximum A3, 11” x 17”
Reproduction Ratios: 4 reductions, 3 enlargements, 1 option, zoom -
64% to 141% (1%/step)
- A4 Version -
4R: 93%, 82%, 71%, and 65%
3E: 115%, 122%, and 141%
- Letter Version -
4R: 93%, 77%, 74%, and 64%
3E: 121%, 129%, and 141%
One optional ratio can be programmed in addition
to the above.
Reproduction Ratio
Maximum 6 seconds
Change:
Warm Up Time: Approximately 6 minutes
Copy Paper:
Size:
- Maximum A3,
- Minimum A5,
(Room Temp. 20°C, 68°F)
11” x 17”
5½” x 8½”
Weight:
- Maximum 90 grams (24 lb)
- Minimum 60 grams (16 lb)
Copy Speed:
- A4 version -
Ratio
A3 A4 A5
1:1.41
41 56 56
1:1 41 65 72
1:0.65
41
61
67
- LT version -
Ratio
DLT LG LT
1:1.41 41 56 56
1:1 41 64 64
1:0.65
41 61 61
DLT: 11” x 17”
LG: 8.5” x 14”
LT: 8.5” x 11”
1-1

30 April, ’89
First Copy Time: 3.9 seconds (A4 or 8.5” x 11” fed from upper tray)
Copy Number Input:
1 to 999 using number keys
Operation Display: Guidance display LCD and indicator LCD
Image Density Automatic Density Selection (ADS) + Manual
Selection: Selection (7 Steps)
Special Features: 1. Size Magnification
2. Image Shift (Right and left)
A4 version (Letter version): Adjustable from 0
to 21 mm (3/4”) at 1 mm (1/8”) increments
3. Automatic Duplex (3 modes)
4. Edit Image
a. Erase Borders
b. Erase Image
c. Overlay Image
5. Automatic Paper Selection (APS)
6. Automatic Reduction/Enlargement (AMS)
7. Weekly Timer
Paper Stock: Upper tray: 1000 sheets
Lower tray: 500 sheets
Copy Tray Capacity: 250 sheets (All sizes)
Copy Face Down:
Automatic
Toner Replenishment: Cartridge exchange
Toner Consumption: 20,000 copies/cartridge (ID 1.3)
17,000 copies/cartridge (ID 1.4)
(650 g/cartridge, A4 or 8.5” x 11”, 7% original)
Automatic Reset: 1 minute (Can be set to 5 seconds, 3 minutes, or
no automatic reset.)
All functions are cancelled except image density
selection. Copies Entered is set to “1”, the copy
ratio is returned to full size, the upper tray is
selected, and all special features are reset.
Automatic Shut-off: 30 minutes, 1 hour, 3 hours, or “Infinite” can be
programmed.
1-2