Ricoh A 2228C, A 2238C, A 2232C Service Manual

B147/B149/B190

SERVICE MANUAL

001892MIUMIU

RICOH GROUP COMPANIES

®

®

B147/B149/B190

MANUAL SERVICE

RICOH GROUP COMPANIES

B147/B149/B190 SERVICE MANUAL

001892MIU

It is the reader's responsibility when discussing the information contained within this document to maintain a level of confidentiality that is in the best interest of Ricoh Corporation and its member companies.

NO PART OF THIS DOCUMENT MAY BE REPRODUCED IN ANY FASHION AND DISTRIBUTED WITHOUT THE PRIOR PERMISSION OF RICOH CORPORATION.

All product names, domain names or product illustrations, including desktop images, used in this document are trademarks, registered trademarks or the property of their respective companies.

They are used throughout this book in an informational or editorial fashion only and for the benefit of such companies. No such use, or the use of any trade name, or web site is intended to convey endorsement or other affiliation with Ricoh products.

2004 RICOH Corporation. All rights reserved.

WARNING

The Service Manual contains information regarding service techniques, procedures, processes and spare parts of office equipment distributed by Ricoh Corporation. Users of this manual should be either service trained or certified by successfully completing a Ricoh Technical Training Program.

Untrained and uncertified users utilizing information contained in this service manual to repair or modify Ricoh equipment risk personal injury, damage to property or loss of warranty protection.

Ricoh Corporation

LEGEND

PRODUCT CODE		COMPANY
	GESTETNER	LANIER	RICOH	SAVIN
B147	DSc332	LD232c	Aficio 2232C	C3224
B149	DSc338	LD238c	Aficio 2238C	C3828
B190	DSc328	LD228c	Aficio 2228C	C2820

DOCUMENTATION HISTORY

REV. NO.	DATE	COMMENTS
*	01/2004	Original Printing
1	09/2004	B190 Addition

B147/B149/B190

TABLE OF CONTENTS

INSTALLATION

1. INSTALLATION............................................................................		1-1
1.1 INSTALLATION REQUIREMENTS ...........................................................		1-1
	1.1.1 ENVIRONMENT ...............................................................................	1-1
	1.1.2 MACHINE LEVEL.............................................................................	1-1
	1.1.3 MACHINE SPACE REQUIREMENT.................................................	1-2
	1.1.4 POWER REQUIREMENTS ..............................................................	1-2
1.2 OPTIONAL UNIT COMBINATIONS ..........................................................		1-3
	1.2.1 MACHINE OPTIONS ........................................................................	1-3
	1.2.2 CONTROLLER OPTIONS ................................................................	1-3
1.3 COPIER.....................................................................................................		1-4
	1.3.1 POWER SOCKETS FOR PERIPHERALS .......................................	1-4
	1.3.2 INSTALLATION FLOW CHART .......................................................	1-5
1.4 MACHINE INSTALLATION........................................................................		1-6
	1.4.1 COPIER............................................................................................	1-6
	Accessory Check ..................................................................................	1-6
	Installation Procedure ...........................................................................	1-7
	Settings Relevant to Contract .............................................................	1-11
	1.4.2 MOVING MACHINE........................................................................	1-12
	1.4.3 TRANSPORTING MACHINE..........................................................	1-13
1.5 OPTIONAL UNIT .....................................................................................		1-15
	1.5.1 ONE-TRAY PAPER FEED UNIT ....................................................	1-15
	Accessory Check ................................................................................	1-15
	Installation Procedure .........................................................................	1-16
	1.5.2 TWO-TRAY PAPER FEED UNIT....................................................	1-19
	Accessory Check ................................................................................	1-19
	Installation Procedure .........................................................................	1-20
	1.5.3 LARGE CAPACITY TRAY ..............................................................	1-23
	Accessory Check ................................................................................	1-23
	Installation Procedure .........................................................................	1-24
	1.5.4 AUTO REVERSE DOCUMENT FEEDER ......................................	1-27
	Accessory Check ................................................................................	1-27
	Installation Procedure .........................................................................	1-27
	1.5.5 TWO-TRAY FINISHER...................................................................	1-30
	Accessory Check ................................................................................	1-30
	Installation Procedure .........................................................................	1-30
	1.5.6 PUNCH UNIT .................................................................................	1-33
	Accessory Check ................................................................................	1-33
	Installation Procedure .........................................................................	1-34
	1.5.7 MULTI-BIN OUTPUT TRAY ...........................................................	1-37
	Accessories Check List.......................................................................	1-37
SM	i	B147/B149/B190

Installing the Multi-Bin Output Tray.....................................................		1-38
1.5.8 BOOKLET FINISHER .....................................................................		1-39
Accessory Check ................................................................................		1-39
Adjusting the Height............................................................................		1-40
Main Body...........................................................................................		1-41
Optional Punch Unit............................................................................		1-44
1.5.9 PRINTER SCANNER UNIT (FOR ASIA MODEL ONLY)................		1-48
Accessory Check ................................................................................		1-48
Installation Procedure .........................................................................		1-48
1.5.10 POSTSCRIPT 3............................................................................		1-51
1.5.11 256 MB MEMORY ........................................................................		1-52
1.5.12 FILE FORMAT CONVERTER ......................................................		1-53
1.5.13 IEEE 1394 (FIREWIRE)................................................................		1-54
Installation Procedure .........................................................................		1-54
UP Mode Settings for IEEE 1394........................................................		1-55
SP Mode Settings for IEEE 1394........................................................		1-55
1.5.14 USB 2.0 ........................................................................................		1-56
Installation Procedure .........................................................................		1-56
USB SP Settings.................................................................................		1-57
1.5.15 IEEE 802.11B (WIRELESS LAN) .................................................		1-58
Installation Procedure .........................................................................		1-58
UP Mode Settings for Wireless LAN ...................................................		1-60
SP MODE SETTINGS FOR IEEE 802.11B WIRELESS LAN.........................		1-61
1.5.16 BLUETOOTH................................................................................		1-62
1.5.17 CHECK ALL CONNECTIONS ......................................................		1-64
1.5.18 KEY COUNTER HOLDER............................................................		1-65
1.5.19 ANTI-CONDENSATION HEATER................................................		1-67
1.5.20 ANTI-CONDENSATION HEATER................................................		1-69
PREVENTIVE MAINTENANCE
2. PREVENTIVE MAINTENANCE....................................................		2-1
2.1 SETTINGS.................................................................................................		2-1
New Unit Set.........................................................................................		2-1
Counter Reset.......................................................................................		2-1
2.2 PM TABLES ..............................................................................................		2-2
2.3 OTHERS ...................................................................................................		2-5
REPLACEMENT AND ADJUSTMENT
3. REPLACEMENT AND ADJUSTMENT ........................................		3-1
3.1 SPECIAL TOOLS ................................................................................		3-1
3.2 IMAGE ADJUSTMENT..............................................................................		3-2
3.2.1 SCANNING.......................................................................................		3-2
Scanner sub-scan magnification...........................................................		3-2
Scanner leading edge and side-to-side registration..............................		3-2
Main scan dot position correction .........................................................		3-3
B147/B149/B190	ii	SM

	3.2.2 ARDF................................................................................................		3-4
	ARDF side-to-side and leading edge registration .................................		3-4
	3.2.3 REGISTRATION...............................................................................		3-5
	Image Area ...........................................................................................		3-5
	Leading Edge........................................................................................		3-5
	Side to Side ..........................................................................................		3-5
	Adjustment Standard ............................................................................		3-5
	Paper Registration Standard.................................................................		3-5
	Adjustment Procedure ..........................................................................		3-6
	3.2.4 COLOR REGISTRATION .................................................................		3-6
	Line Position Adjustment ......................................................................		3-6
	Adjustment of Line Speed for Thick Paper............................................		3-6
	3.2.5 PRINTER GAMMA CORRECTION ..................................................		3-7
	Copy Mode ...........................................................................................		3-7
	Printer Mode .......................................................................................		3-11
3.3 DUPLEX INVERTER UNIT......................................................................			3-13
	3.3.1 TOP COVER ..................................................................................		3-13
	3.3.2 DUPLEX CONTROL BOARD .........................................................		3-13
	3.3.3 DUPLEX INVERTER MOTOR 1.....................................................		3-14
	3.3.4 DUPLEX INVERTER MOTOR 2 AND SWITCH .............................		3-15
	3.3.5 EXIT SENSOR 3 AND DUPLEX INVERTER SENSOR..................		3-15
	3.3.6 EXIT SENSOR 1 AND 2 .................................................................		3-15
3.4 DUPLEX FEED UNIT ..............................................................................			3-16
	3.4.1 DUPLEX DRIVE BOARD................................................................		3-16
	3.4.2 DUPLEX FEED MOTOR ................................................................		3-16
	3.4.3 DUPLEX FEED SENSOR...............................................................		3-17
3.5 EXTERIOR COVERS ..............................................................................			3-18
	3.5.1 REAR, FRONT, AND RIGHT SIDES ..............................................		3-18
	3.5.2 LEFT SIDE .....................................................................................		3-20
	3.5.3 OPERATION PANEL AND SCANNER COVERS...........................		3-21
3.6 SCANNER UNIT......................................................................................			3-22
	3.6.1 EXPOSURE GLASS.......................................................................		3-22
	3.6.2 ORIGINAL LENGTH/WIDTH SENSOR ..........................................		3-22
	3.6.3 SENSOR BOARD UNIT (SBU).......................................................		3-23
	3.6.4 EXPOSURE LAMP STABILIZER ...................................................		3-24
	3.6.5 XENON LAMP ................................................................................		3-24
	3.6.6 SCANNER POWER SUPPLY UNIT (PSU) ....................................		3-25
	3.6.7 SCANNER MOTOR........................................................................		3-25
	3.6.8 FRONT SCANNER WIRE ..............................................................		3-26
	3.6.9 REAR SCANNER WIRE.................................................................		3-29
	3.6.10 TOUCH PANEL POSITION ADJUSTMENT .................................		3-32
3.7 LASER OPTICS ......................................................................................			3-33
	3.7.1 CAUTION DECAL LOCATIONS.....................................................		3-33
	3.7.2 LASER OPTICS HOUSING UNIT ..................................................		3-34
	Adjustments after Replacing the Laser Optics Housing Unit...............		3-39
	3.7.3 POLYGON MIRROR MOTOR ........................................................		3-40
	3.7.4 LASER SYNCHRONIZING DETECTOR BOARDS ........................		3-40
3.8 PCU AND DEVELOPMENT UNIT ...........................................................			3-41
SM	iii	B147/B149/B190

3.9 PAPER FEED..........................................................................................	3-42
3.9.1 PICK-UP, FEED, AND SEPARATION ROLLERS ..........................	3-42
Tray 1 and Tray 2 ...............................................................................	3-42
By-pass Tray.......................................................................................	3-42
3.9.2 PAPER WIDTH DETECTION BOARD ...........................................	3-43
3.9.3 VERTICAL TRANSPORT SENSOR ...............................................	3-44
3.9.4 RIGHT DOOR UNIT .......................................................................	3-44
3.9.5 REGISTRATION SENSOR AND RELAY SENSORS .....................	3-45
3.9.6 PAPER FEED CLUTCHES.............................................................	3-45
3.9.7 BY-PASS FEED CLUTCH ..............................................................	3-46
3.9.8 TRAY LIFT MOTOR .......................................................................	3-46
3.9.9 PAPER FEED MOTOR...................................................................	3-47
3.10 TRANSFER AND PAPER TRANSPORT UNIT .....................................	3-48
3.10.1 TRANSFER UNIT.........................................................................	3-48
3.10.2 TRANSFER BELT CLEANING UNIT............................................	3-49
3.10.3 CLEANING BLADE AND CLEANING ROLLER ...........................	3-50
3.10.4 TRANSFER BELT ........................................................................	3-52
3.10.5 TRANSFER UNIT DRIVE MOTOR...............................................	3-54
3.11 ID SENSORS ........................................................................................	3-55
3.12 FUSING.................................................................................................	3-56
3.12.1 FUSING UNIT...............................................................................	3-56
3.12.2 OIL SUPPLY UNIT AND UPPER COVER....................................	3-57
3.12.3 CLEANING UNIT..........................................................................	3-58
3.12.4 HEATING ROLLER LAMP............................................................	3-59
3.12.5 FUSING BELT UNIT.....................................................................	3-60
3.12.6 HOT ROLLER...............................................................................	3-61
3.12.7 HEATING ROLLER ......................................................................	3-61
3.12.8 PAPER GUIDE PLATES AND STRIPPER PAWLS......................	3-62
3.12.9 THERMISTOR AND FUSE...........................................................	3-63
3.12.10 PRESSURE ROLLER FUSING LAMP .......................................	3-64
3.12.11 PRESSURE ROLLER.................................................................	3-65
3.12.12 FUSING UNIT FAN.....................................................................	3-67
3.12.13 WASTE OIL BOTTLE .................................................................	3-68
3.12.14 PAPER EXIT ..............................................................................	3-68
3.13 ELECTRICAL COMPONENTS..............................................................	3-69
3.13.1 MOVING THE CONTROLLER BOX OUT OF THE WAY .............	3-69
3.13.2 MOVING THE HIGH VOLTAGE SUPPLY UNIT - C,
B OUT OF THE WAY ...................................................................	3-70
3.13.3 CONTROLLER, IPU, AND BCU ...................................................	3-70
3.13.4 HDD..............................................................................................	3-72
3.13.5 NVRAM REPLACEMENT PROCEDURE .....................................	3-72
NVRAM on BCU .................................................................................	3-72
NVRAM on Controller .........................................................................	3-73
3.13.6 REMOVING THE HIGH VOLTAGE SUPPLY BOARD - C, B .......	3-74
3.13.7 SUB POWER SUPPLY UNIT .......................................................	3-74
3.13.8 PSU ..............................................................................................	3-75
3.13.9 DRIVER BOARD ..........................................................................	3-75

B147/B149/B190

iv

SM

3.14 DRIVE UNIT	..........................................................................................		3-76
3.14.1 REGISTRATION ...........................................................CLUTCH			3-76
3.14.2 DEVELOPMENT ......................................................CLUTCHES			3-76
3.14.3 DEVELOPMENT .................................................MOTOR - CMY			3-77
3.14.4 DRUM DRIVE MOTOR - CMY AND DRUM DRIVE MOTOR - K .3-79
3.14.5 DEVELOPMENT ...........................................DRIVE MOTOR - K			3-80
3.15 TONER SUPPLY .........................................................................UNIT			3-81
M Toner Supply ...........................................................................Unit			3-81
C and Y Toner ...............................................................Supply Units			3-85
K Toner Supply ............................................................................Unit			3-86
TROUBLESHOOTING
4. TROUBLESHOOTING .................................................................			4-1
4.1 PROCESS CONTROL .........................................ERROR CONDITIONS			4-1
4.1.1 DEVELOPER .........................................INITIALIZATION RESULT			4-1
4.1.2 PROCESS ...............................CONTROL SELF-CHECK RESULT			4-3
4.1.3 LINE POSITION .......................................ADJUSTMENT RESULT			4-4
4.2 SCANNER TEST ...........................................................................MODE			4-7
4.2.1 VPU TEST ............................................................................MODE			4-7
SP4-907-1 ..........................................................VPU Test Pattern: R			4-7
SP4-907-2 ..........................................................VPU Test Pattern: G			4-7
SP4-907-3 ..........................................................VPU Test Pattern: B			4-7
4.2.2 IPU TEST ..............................................................................MODE			4-7
SP4-904-1 ....................................	Register Write/Read Check Result		4-7
SP4-904-2 ..................................................Image Path Check Result			4-7
4.3 SERVICE CALL .................................................................CONDITIONS			4-9
4.3.1 SUMMARY .......................................................................................			4-9
SC Code Classification .......................................................................			4-10
4.4 SC TABLE ...............................................................................................			4-11
4.5 TROUBLESHOOTING ................................................................GUIDE			4-55
4.5.1 IMAGE QUALITY............................................................................			4-55
Work-flow............................................................................................			4-55
4.6 TROUBLESHOOTING ................................................................GUIDE			4-57
4.6.1 IMAGE QUALITY............................................................................			4-57
Detailed Explanation...........................................................................			4-61
Copy Image ......................................................................processing			4-66
4.6.2 COLOR ...............................................................................SHIFT			4-68
Adjustment ..................................................Standard: Max. 150 mm			4-70
How to measure .....................................the gap between color lines			4-76
4.6.3 COLOR .........SHIFT AFTER TRANSFER UNIT REPLACEMENT			4-78
Check the color ...................................................................shift level			4-78
Fusing/ Registration ...................................Roller Speed Adjustment			4-78
4.6.4 BLACK OVER .....................................................................PRINT			4-81
Black Over ...................................................................Print Disabled			4-81
Black Over ....................................................................Print Enabled			4-81
4.7 ELECTRICAL ................................................COMPONENT DEFECTS			4-82
4.7.1 SENSORS ......................................................................................			4-82
SM	v	B147/B149/B190

4.8 BLOWN FUSE CONDITIONS .................................................................		4-84
4.9 LEDS (BCU) ............................................................................................		4-84
SERVICE TABLES
5. SERVICE TABLES.......................................................................		5-1
5.1 SERVICE PROGRAM MODE....................................................................		5-1
5.1.1 ENABLING AND DISABLING SERVICE PROGRAM MODE		...........5-1
Entering SP Mode.................................................................................		5-1
Exiting SP Mode ...................................................................................		5-1
5.1.2 TYPES OF SP MODES ....................................................................		5-2
SP Mode Button Summary ...................................................................		5-3
Switching Between SP Mode and Copy Mode for Test Printing		...........5-4
Selecting the Program Number.............................................................		5-4
Exiting Service Mode ............................................................................		5-5
5.1.3 REMARKS........................................................................................		5-5
Display on the Control Panel Screen ....................................................		5-5
Others ...................................................................................................		5-6
5.2 COPY SERVICE MODE............................................................................		5-7
5.2.1 SERVICE MODE TABLE..................................................................		5-7
SP1-XXX (Feed) ...................................................................................		5-7
SP2-XXX (Drum).................................................................................		5-15
SP3-XXX (Process) ............................................................................		5-27
SP4-XXX (Scanner)............................................................................		5-35
SP5-XXX (Mode) ................................................................................		5-42
SP6-XXX (Peripherals) .......................................................................		5-64
SP7-XXX (Data Log)...........................................................................		5-67
SP8-xxx: Data Log2............................................................................		5-78
5.2.2 INPUT CHECK TABLE .................................................................		5 - 114
ARDF Input Check: SP6-007 ............................................................		5 - 116
Table 1: Paper Height Sensor...........................................................		5 - 117
Table 2: Paper Size Switch (Tray 2) .................................................		5 - 117
Table 3: Paper Size (By-pass Table) ................................................		5 - 117
Table 4: Original Size Detection .......................................................		5 - 118
5.2.3 OUTPUT CHECK TABLE .............................................................		5 - 119
5.2.4 TEST PATTERN (SP5-997) .........................................................		5 - 123
5.3 PRINTER SERVICE MODE ..................................................................		5 - 124
SP1-XXX (Service Mode) .................................................................		5 - 124
5.4 SCANNER SP MODE ...........................................................................		5 - 126
SP1-xxx (System and Others) ..........................................................		5 - 126
SP2-XXX (Scanning-image quality) ..................................................		5 - 127
5.5 REBOOT / SYSTEM SETTING RESET ................................................		5 - 137
5.5.1 SOFTWARE RESET ....................................................................		5 - 137
5.5.2 SYSTEM SETTINGS AND COPY SETTING RESET ...................		5 - 137
System Setting Reset .......................................................................		5 - 137
Copier Setting Reset.........................................................................		5 - 138
5.6 FIRMWARE UPDATE ...........................................................................		5 - 139
5.6.1 TYPE OF FIRMWARE..................................................................		5 - 139
B147/B149/B190	vi	SM

			Rev. 06/2004
	5.6.1 BEFORE YOU BEGIN… ..............................................................		5-140
	5.6.2 UPDATING FIRMWARE...............................................................		5-140
	5.6.3 VERIFYING A SUCCESSFUL UPDATE ......................................		5-147
	5.6.4 UPDATING THE LCDC FOR THE OPERATION PANEL		.............5-150
	5.6.5 DOWNLOADING STAMP DATA ..................................................		5-151
	5.6.6 NVRAM DATA UPLOAD/DOWNLOAD ........................................		5-152
	Uploading Content of NVRAM to an SD card ...................................		5-152
	Downloading an SD Card to NVRAM................................................		5-152
	5.6.7 INSTALLING ANOTHER LANGUAGE .........................................		5-153
	5.6.8 HANDLING FIRMWARE UPDATE ERRORS...............................		5-156
5.7 SD CARD APPLI MOVE........................................................................			5-157
	5.7.1 OVERVIEW ..................................................................................		5-157
	5.7.2 MOVE EXEC ................................................................................		5-158
	5.7.3 UNDO EXEC ................................................................................		5-159
5.8 CONTROLLER SELF-DIAGNOSTICS ..................................................			5-160
	5.8.1 OVERVIEW ..................................................................................		5-160
	5.8.2 DETAILED SELF-DIAGNOSTICS ................................................		5-161
5.9 USER PROGRAM MODE .....................................................................			5-162
	5.9.1 MENU ...........................................................................................		5-162
	5.9.2 DISPLAY ......................................................................................		5-166
	Selecting Menu .................................................................................		5-166
	Inquiry ...............................................................................................		5-166
5.10 DIP SWITCHES...................................................................................			5-167
	Controller Board................................................................................		5-167
	BCU Board........................................................................................		5-167
DETAILED DESCRIPTIONS
6. DETAILED SECTION DESCRIPTIONS .......................................			6-1
6.1 OVERVIEW ...............................................................................................			6-1
	6.1.1 COMPONENT LAYOUT ...................................................................		6-1
	6.1.2 PAPER PATH...................................................................................		6-2
	6.1.3 DRIVE LAYOUT ...............................................................................		6-3
	6.1.4 BOARD STRUCTURE......................................................................		6-4
	Overview...............................................................................................		6-4
	Descriptions ..........................................................................................		6-5
	6.1.5 PRINTING PROCESS ......................................................................		6-6
6.2 PROCESS CONTROL ..............................................................................			6-8
	6.2.1 OVERVIEW ......................................................................................		6-8
	6.2.2 POTENTIAL CONTROL ...................................................................		6-8
	Overview...............................................................................................		6-8
	Process Control Self Check ..................................................................		6-9
	6.2.3 PROCESS CONTROL SELF CHECK PROCEDURE ....................		6-10
	Step 1: VSG Adjustment .....................................................................		6-10
	Step 2: ID Sensor Solid Pattern Generation .......................................		6-11
	Step 3: Sensor Pattern Detection .......................................................		6-11
	Step 4: Toner Amount Calculation ......................................................		6-11
	Step 5: VD, VB, VL Selection and VREF Adjustment .........................		6-12
SM	vii	B147/B149/B190

Step 6: ID Sensor Highlight Pattern Generation .................................		6-13
Step 7: Sensor Pattern Density Detection...........................................		6-13
Step 8: VL (LD Power) Selection ........................................................		6-13
6.2.4 VREF COMPENSATION DURING A PRINT JOB..........................		6-14
Highlight Pattern .................................................................................		6-14
Adjustment Process............................................................................		6-14
6.2.5 TONER SUPPLY CONTROL .........................................................		6-15
Overview.............................................................................................		6-15
Toner Supply Control Modes ..............................................................		6-15
6.2.6 TONER NEAR END/TONER END DETECTION............................		6-16
Introduction .........................................................................................		6-16
Toner Near End Detection 1 ...............................................................		6-17
Toner Near End Detection 2 ...............................................................		6-17
Toner End Detection ...........................................................................		6-18
Toner End Recovery ...........................................................................		6-18
6.2.7 DEVELOPER INITIALIZATION ......................................................		6-19
6.3 SCANNING..............................................................................................		6-20
6.3.1 OVERVIEW ....................................................................................		6-20
6.3.2 SCANNER DRIVE ..........................................................................		6-21
6.3.3 ORIGINAL SIZE DETECTION........................................................		6-22
6.3.4 ANTI-CONDENSATION HEATER..................................................		6-23
6.4 IMAGE PROCESSING ............................................................................		6-24
6.4.1 OVERVIEW ....................................................................................		6-24
6.4.2 SBU BLOCK DIAGRAM .................................................................		6-25
Signal Processing ...............................................................................		6-25
A/D Conversion...................................................................................		6-25
White Level Correction........................................................................		6-25
Others .................................................................................................		6-25
Black Level Correction ........................................................................		6-26
Adjustments ........................................................................................		6-26
VPU Test Mode ..................................................................................		6-26
6.4.3 IPU BLOCK DIAGRAM...................................................................		6-27
Shading Correction .............................................................................		6-27
Picture Element (Dot Position) Correction ..........................................		6-28
Scan Line Correction ..........................................................................		6-28
Image Separation................................................................................		6-28
ACS (Auto Color Select) .....................................................................		6-29
Scanner Gamma Correction (RGB Gamma Correction) .....................		6-30
Filtering ...............................................................................................		6-31
ADS (Auto Image Density Selection) ..................................................		6-31
Color Conversion ................................................................................		6-32
Main Scan Magnification.....................................................................		6-33
Printer Gamma Correction ..................................................................		6-34
Error Diffusion.....................................................................................		6-36
IPU Board Test ...................................................................................		6-36
6.5 IMAGE DATA PATH................................................................................		6-37
Copier Application...............................................................................		6-37
Printer Application...............................................................................		6-37
Scanner Application (1 bit/8 bits) ........................................................		6-37
B147/B149/B190	viii	SM

	Fax Application (Transmission/Reception)..........................................		6-37
6.6 LASER EXPOSURE................................................................................			6-38
	6.6.1 OVERVIEW ....................................................................................		6-38
	6.6.2 OPTICAL PATH..............................................................................		6-39
	6.6.3 LASER SYNCHRONIZING DETECTOR ........................................		6-40
	Overview.............................................................................................		6-40
	Main Scan Start Detection ..................................................................		6-40
	Clock Frequency Adjustment ..............................................................		6-40
	6.6.4 DUAL BEAM WRITING ..................................................................		6-41
	Dual Beam Mechanism.......................................................................		6-41
	Laser Beam Pitch Change Mechanism...............................................		6-41
	Printing Mode and Black LD Unit Position ..........................................		6-42
	6.6.5 LD SAFETY SWITCH .....................................................................		6-43
	Error Messages ..................................................................................		6-44
	6.6.6 AUTOMATIC LINE POSITION ADJUSTMENT ..............................		6-45
	Overview.............................................................................................		6-45
	Summary of Each Adjustment ............................................................		6-46
	Adjustment Conditions ........................................................................		6-47
	Main Scan Skew Adjustment ..............................................................		6-48
	6.6.7 DIFFERENCES IN THE COPY AND PRINTER MODES ...............		6-48
6.7 PHOTOCONDUCTOR UNIT ...................................................................			6-49
	6.7.1 OVERVIEW ....................................................................................		6-49
	6.7.2 DRIVE.............................................................................................		6-50
	6.7.3 DRUM GEAR POSITION SENSORS .............................................		6-51
	Mechanism .........................................................................................		6-51
	Initialization Process and SC Codes...................................................		6-52
	6.7.4 DRUM CHARGE AND QUENCHING .............................................		6-53
	6.7.5 DRUM CLEANING..........................................................................		6-54
	6.7.6 WASTE TONER COLLECTION .....................................................		6-55
	Waste Toner Path...............................................................................		6-55
	Waste Toner Vibrator..........................................................................		6-56
	6.7.7 WASTE TONER BOTTLE FULL DETECTION ...............................		6-57
6.8 DEVELOPMENT .....................................................................................			6-58
	6.8.1 OVERVIEW ....................................................................................		6-58
	6.8.2 DRIVE.............................................................................................		6-59
	6.8.3 DEVELOPER AGITATION .............................................................		6-60
	6.8.4 DEVELOPMENT BIAS ...................................................................		6-61
	6.8.5 TONER SUPPLY MECHANISM .....................................................		6-62
	Overview.............................................................................................		6-62
	Toner Agitation and Attraction ............................................................		6-62
	Air Flow and Toner Flow .....................................................................		6-63
	Toner Near End Detection ..................................................................		6-63
	Toner Transport ..................................................................................		6-64
	6.8.6 TONER CARTRIDGE DETECTION ...............................................		6-65
6.9 PAPER FEED..........................................................................................			6-66
	6.9.1 OVERVIEW ....................................................................................		6-66
	6.9.2 DRIVE – TRAY 1, TRAY 2, AND BY-PASS TRAY .........................		6-67
	6.9.3 PAPER LIFT – TRAYS 1 & 2..........................................................		6-68
	6.9.4 PAPER SIZE DETECTION – TRAYS 1 & 2....................................		6-69
SM	ix	B147/B149/B190

6.9.5 PAPER HEIGHT DETECTION – TRAYS 1 & 2 ..............................		6-70
6.9.6 PAPER END DETECTION – TRAYS 1 & 2 ....................................		6-70
6.9.7 REGISTRATION.............................................................................		6-71
6.9.8 PAPER FEED LINE SPEED...........................................................		6-72
6.9.9 GRIP ROLLER RELEASE MECHANISM .......................................		6-73
6.10 DUPLEX UNIT.......................................................................................		6-74
6.10.1 OVERVIEW ..................................................................................		6-74
6.10.2 DUPLEX OPERATION .................................................................		6-75
Up to A4/LT (81/2" x 11") LEF ............................................................		6-75
Larger than A4/LT (81/2" x 11") LEF...................................................		6-75
6.10.3 DUPLEX INVERTER UNIT...........................................................		6-76
6.10.4 FEED TO EXTERNAL EXIT TRAY (NON-DUPLEX MODE) ........		6-77
6.10.5 FEED TO DUPLEX FEED UNIT...................................................		6-78
6.10.6 FEED TO TWO-TRAY FINISHER AND BOOKLET FINISHER ....		6-79
With Optional One-Tray Paper Feed Unit ...........................................		6-79
With Optional LCT or Two-Tray Paper Feed Unit ...............................		6-79
6.10.7 DUPLEX FEED UNIT ...................................................................		6-80
Drive ...................................................................................................		6-80
Feed-in and feed-out...........................................................................		6-80
6.11 IMAGE TRANSFER AND PAPER SEPARATION .................................		6-81
6.11.1 OVERVIEW ..................................................................................		6-81
6.11.2 TRANSFER BELT DRIVE ............................................................		6-82
Drive Motor .........................................................................................		6-82
Rotation Encoder ................................................................................		6-83
6.11.3 TRANSFER CURRENT................................................................		6-84
6.11.4 TRANSFER BELT CLEANING .....................................................		6-85
6.11.5 TRANSFER BELT CONTACT ......................................................		6-86
Mechanism .........................................................................................		6-86
Transfer Belt Sensor...........................................................................		6-87
Copier ACS.........................................................................................		6-87
Printer ACS.........................................................................................		6-88
6.12 FUSING.................................................................................................		6-89
6.12.1 OVERVIEW ..................................................................................		6-89
6.12.2 FUSING UNIT DRIVE...................................................................		6-90
Belt and Rollers ..................................................................................		6-90
Fusing Clutch......................................................................................		6-90
6.12.3 FUSING TEMPERATURE CONTROL..........................................		6-91
Fusing Temperatures..........................................................................		6-91
Temperature Corrections ....................................................................		6-92
Overheat Protection............................................................................		6-92
6.12.4 OIL SUPPLY AND CLEANING.....................................................		6-93
Oil Supply Pad and Roller...................................................................		6-93
Oil Supply Mechanism ........................................................................		6-94
6.12.5 WASTE OIL ..................................................................................		6-95
Bottle Set Sensor................................................................................		6-95
Waste Oil Sensor................................................................................		6-96
6.12.6 NEW FUSING OIL SUPPLY UNIT DETECTION..........................		6-96
6.12.7 ENERGY SAVER MODES ...........................................................		6-97
Overview.............................................................................................		6-97
B147/B149/B190	x	SM

Panel Off Mode...................................................................................		6-98
Auto Off Mode.....................................................................................		6-99
6.13 PAPER EXIT .......................................................................................		6-100
6.13.1 OVERVIEW ................................................................................		6-100
6.13.2 PAPER OVERFLOW DETECTION ............................................		6-101
6.14 PRINTER FUNCTIONS.......................................................................		6-102
6.14.1 OVERVIEW ................................................................................		6-102
6.14.2 HARD DISK ................................................................................		6-104
Overview...........................................................................................		6-104
Data Transfer....................................................................................		6-104
6.14.3 PRINT DATA PROCESSING .....................................................		6-105
RPCS Driver .....................................................................................		6-105
PCL5c Driver ....................................................................................		6-105
PS3 Driver ........................................................................................		6-106
CMS (Color Management System) ...................................................		6-106
Gray Correction ................................................................................		6-106
BG/UCR (Black Generation/Under Color Removal)..........................		6-106
Gamma Correction............................................................................		6-106
Toner Limitation ................................................................................		6-107
Dither Processing and ROP/RIP.......................................................		6-107
6.14.4 CONTROLLER FUNCTIONS .....................................................		6-108
Sample Print .....................................................................................		6-108
Locked Print......................................................................................		6-108
6.14.5 JOB SPOOLING.........................................................................		6-109
Related SP Modes............................................................................		6-109
Paper Source Selection ....................................................................		6-110
Auto Continue ...................................................................................		6-111
Paper Output Tray ............................................................................		6-112
Stapling.............................................................................................		6-112
Punching...........................................................................................		6-113
6.15 ETHERNET BOARD ...........................................................................		6-114
6.15.1 ETHERNET BOARD LAYOUT ...................................................		6-114
6.15.2 ETHERNET BOARD OPERATION.............................................		6-115
6.16 IEEE1394 BOARD (FIREWIRE)..........................................................		6-116
6.16.1 OVERVIEW ................................................................................		6-116
6.17 USB	.....................................................................................................	6-118
6.17.1 SPECIFICATIONS......................................................................		6-118
6.17.2	USB 1.1/2.0 ................................................................................	6-118
6.17.3 ..................................................................USB CONNECTORS		6-119
6.17.4 .....................................................................PIN ASSIGNMENT		6-119
6.17.5 ............................................................REMARKS ABOUT USB		6-120
Related ..............................................................................SP Mode		6-120
6.18 IEEE ........................................................802.11B (WIRELESS LAN)		6-121
6.18.1 ......................................................................SPECIFICATIONS		6-121
LED ..................................................................................Indicators		6-121
6.18.2 ..........................................................TRANSMISSION MODES		6-122
Ad ....................................................................................Hoc Mode		6-122
Infrastructure ...........................................................................Mode		6-122
6.18.3 .............................................................SECURITY FEATURES		6-123
SM	xi	B147/B149/B190

	Using the SSID in Ad hoc mode .......................................................	6-123
6.18.4 WIRELESS LAN TROUBLESHOOTING NOTES.......................		6-124
	Communication Status......................................................................	6-124
	Channel Settings ..............................................................................	6-124
	Troubleshooting Procedure...............................................................	6-125
6.19 BLUETOOTH.......................................................................................		6-126
6.19.1 SPECIFICATIONS......................................................................		6-126
6.19.2 BLUETOOTH PROFILES ...........................................................		6-127
6.19.3 BLUETOOTH SECURITY FEATURES.......................................		6-127
6.20 SCANNER FUNCTIONS .....................................................................		6-128
6.20.1 IMAGE PROCESSING FOR SCANNER MODE.........................		6-128
	Image Data Path...............................................................................	6-128
6.20.2 SCANNER ACS (AUTO COLOR SELECTION) .........................		6-129
6.21 FILE FORMAT CONVERTER (MLB)...................................................		6-130
SPECIFICATIONS
7. SPECIFICATIONS
1. GENERAL SPECIFICATIONS.....................................................................		7-1
1.1	BASIC..................................................................................................	7-1
1.2	PRINTER.............................................................................................	7-3
1.3	SCANNER ...........................................................................................	7-4
2. SUPPORTED PAPER SIZES......................................................................		7-5
2.1	PAPER FEED......................................................................................	7-5
2.2	PAPER EXIT .......................................................................................	7-6
	PLATEN/ARDF ORIGINAL SIZE DETECTION ....................................	7-7
3. SOFTWARE ACCESSORIES .....................................................................		7-8
3.1	PRINTER DRIVERS............................................................................	7-8
3.2	UTILITY SOFTWARE ..........................................................................	7-8
	Scanner ................................................................................................	7-9
	Scanner Drivers ....................................................................................	7-9
	Scanner Utilities....................................................................................	7-9
4. MACHINE CONFIGURATION...................................................................		7-10
5. OPTIONAL EQUIPMENT ..........................................................................		7-12
5.1	ARDF.................................................................................................	7-12
5.2	ONE-TRAY PAPER FEED UNIT .......................................................	7-13
5.3	TWO-TRAY PAPER FEED UNIT ......................................................	7-13
5.4	2000-SHEET LARGE CAPACITY TRAY ...........................................	7-13
5.5	TWO-TRAY FINISHER & PUNCH UNIT ...........................................	7-14
5.6	BOOKLET FINISHER........................................................................	7-15
5.7	MULTI-BIN OUTPUT TRAY ..............................................................	7-16

ARDF B597

SEE SECTION B597 FOR DETAILED TABLE OF CONTENTS

B147/B149/B190

xii

SM

Rev. 05/2004

ONE-TRAY PAPER FEED UNIT B601

SEE SECTION B601 FOR DETAILED TABLE OF CONTENTS

TWO-TRAY PAPER FEED UNIT B598

SEE SECTION B598 FOR DETAILED TABLE OF CONTENTS

LARGE CAPACITY TRAY B600

SEE SECTION B600 FOR DETAILED TABLE OF CONTENTS

TWO-TRAY FINISHER B599

SEE SECTION B599 FOR DETAILED TABLE OF CONTENTS

BOOKLET FINISHER B602

SEE SECTION B602 FOR DETAILED TABLE OF CONTENTS

FAX OPTION B603

SEE SECTION B603 FOR DETAILED TABLE OF CONTENTS

INTERNET FAX (IFAX)

SEE SECTION IFAX FOR DETAILED TABLE OF CONTENTS

DataOverwriteSecurity Unit B692/B694

SEE SECTION B692/B694 FOR DETAILED TABLE OF CONTENTS

SM

xiii

B147/B149/B190

IIMPORTANT SAFETY NOTICES

PREVENTION OF PHYSICAL INJURY

1.Before disassembling or assembling parts of the copier and peripherals, make sure that the copier power cord is unplugged.

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.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 dispose 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.

5.Dispose of used fusing oil in accordance with local regulations.

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.

WARNING

Use of controls, or adjustment, or performance of procedures other than those specified in this manual may result in hazardous radiation exposure.

WARNING

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:

Trademarks

Microsoft®, Windows®, and MS-DOS® are registered trademarks of Microsoft

Corporation in the United States and /or other countries.

PostScript® is a registered trademark of Adobe Systems, Incorporated.

PCL® is a registered trademark of Hewlett-Packard Company.

Ethernet® is a registered trademark of Xerox Corporation.

PowerPC® is a registered trademark of International Business Machines Corporation.

Other product names used herein are for identification purposes only and may be trademarks of their respective companies. We disclaim any and all rights involved with those marks.

Symbols and Abbreviations

This manual uses several symbols.

Symbol			What it means
			Refer to section number
			See Core Tech Manual for details
			Screw
			Connector
			E-ring
			Clip ring

Short Edge Feed (SEF)

Long Edge Feed (LEF)