Ricoh af 850 Service Manual s af1085

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Page 1

1. OVERALL MACHINE INFORMATION........................................ 1-1

1.1 SPECIFICATIONS.....................................................................................1-1

1.1.1 COPIER ENGINE.............................................................................1-1

1.1.2 ADF ..................................................................................................1-4

1.2 MACHINE CONFIGURATION...................................................................1-5

1.3 COMPONENT LAYOUT............................................................................1-6

1.3.1 COPIER ENGINE.............................................................................1-6

1.3.2 ADF ..................................................................................................1-7

1.4 PAPER PATH............................................................................................1-8

1.5 COPY PROCESS......................................................................................1-9

1.6 DRIVE LAYOUT......................................................................................1-11

1.6.1 COPIER ENGINE...........................................................................1-11

1.6.2 ADF ................................................................................................1-12

1.7 ELECTRICAL COMPONENT DESCRIPTIONS......................................1-13

1.7.1 COPIER ENGINE...........................................................................1-13

1.7.2 ADF ................................................................................................1-19

2. DETAILED SECTION DESCRIPTIONS ...................................... 2-1

2.1 DOCUMENT FEEDER..............................................................................2-1

2.1.1 PICK-UP ROLLER RELEASE..........................................................2-1

2.1.2 BOTTOM PLATE LIFT......................................................................2-2

2.1.3 PICK-UP AND SEPARATION ..........................................................2-3

2.1.4 ORIGINAL FEED..............................................................................2-4

2.1.5 ORIGINAL SIZE DETECTION..........................................................2-5

2.1.6 ORIGINAL TRANSPORT.................................................................2-6

2.1.7 ORIGINAL SKEW CORRECTION....................................................2-7

2.1.8 ORIGINAL INVERSION AND FEED-OUT........................................2-8

2.1.9 JAM CONDITIONS.........................................................................2-12

2.2 SCANNING..............................................................................................2-13

2.2.1 OVERVIEW....................................................................................2-13

2.2.2 SCANNER DRIVE..........................................................................2-14

2.2.3 ORIGINAL SIZE DETECTION IN BOOK MODE............................2-15

2.3 IMAGE PROCESSING............................................................................2-17

2.3.1 OVERVIEW....................................................................................2-17

2.3.2 SBU................................................................................................2-18

2.3.3 AUTO IMAGE DENSITY (ADS)......................................................2-19

2.3.4 IMAGE PROCESSING STEPS AND RELATED SP MODE...........2-20

2.3.5 AUTO SHADING............................................................................2-26

2.3.6 BACKGROUND ERASE.................................................................2-27

2.3.7 INDEPENDENT DOT ERASE........................................................2-28

2.3.8 FILTERING, MAIN SCAN MAGNIFICATION/REDUCTION...........2-29

2.3.9 GAMMA (γ) CORRECTION............................................................2-31

2.3.10 GRADATION PROCESSING .......................................................2-31

2.3.11 LINE WIDTH CORRECTION........................................................2-32

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2.4 LASER EXPOSURE................................................................................2-33

2.4.1 OVERVIEW....................................................................................2-33

2.4.2 OPTICAL PATH..............................................................................2-34

2.4.3 AUTO POWER CONTROL (APC)..................................................2-35

2.4.4 FOUR BEAM LASER WRITING.....................................................2-36

2.4.5 LD SAFETY SWITCHES................................................................2-37

2.5 DRUM UNIT ............................................................................................2-38

2.5.1 PROCESS CONTROL....................................................................2-38

2.5.2 TONER DENSITY CONTROL........................................................2-43

2.5.3 DRUM UNIT COMPONENTS.........................................................2-46

2.5.4 DRIVE.............................................................................................2-47

2.5.5 DRUM CHARGE.............................................................................2-48

2.5.6 DRUM CLEANING..........................................................................2-50

2.5.7 OTHERS.........................................................................................2-53

2.6 DEVELOPMENT.....................................................................................2-56

2.6.1 OVERVIEW....................................................................................2-56

2.6.2 DEVELOPMENT MECHANISM......................................................2-57

2.6.3 DRIVE.............................................................................................2-58

2.6.4 CROSSMIXING..............................................................................2-59

2.6.5 DEVELOPMENT BIAS...................................................................2-60

2.7 TONER SUPPLY AND RECYCLING ......................................................2-61

2.7.1 TONER BANK................................................................................2-61

2.7.2 SUPPLYING TONER TO THE DEVELOPMENT UNIT..................2-65

2.7.3 TONER HOPPER...........................................................................2-66

2.7.4 TONER RECYCLING AND WASTE TONER COLLECTION..........2-68

2.8 PAPER FEED..........................................................................................2-71

2.8.1 OVERVIEW....................................................................................2-71

2.8.2 DRIVE.............................................................................................2-72

2.8.3 PAPER LIFT – TRAYS 2 & 3..........................................................2-73

2.8.4 PICK-UP AND FEED – TRAYS 1 TO 3..........................................2-75

2.8.5 REMAINING PAPER/

PAPER END DETECTION – TRAYS 2 & 3....................................2-79

2.8.6 PAPER SIZE DETECTION – TRAYS 2 & 3....................................2-80

2.8.7 TRAY LOCK – TRAYS 2 & 3..........................................................2-81

2.8.8 TANDEM FEED – TRAY 1 .............................................................2-82

2.8.9 VERTICAL TRANSPORT...............................................................2-89

2.8.10 PAPER REGISTRATION..............................................................2-90

2.9 IMAGE TRANSFER AND PAPER SEPARATION...................................2-93

2.9.1 OVERVIEW....................................................................................2-93

2.9.2 IMAGE TRANSFER AND PAPER SEPARATION..........................2-94

2.9.3 TRANSFER BELT UNIT LIFT.........................................................2-96

2.9.4 PAPER TRANSPORTATION AND BELT DRIVE...........................2-97

2.9.5 TRANSFER BELT CLEANING.......................................................2-98

2.9.6 TONER COLLECTION...................................................................2-99

2.9.7 TRANSFER ANTI-CONDENSATION HEATER............................2-100

2.10 FUSING...............................................................................................2-101

2.10.1 OVERVIEW................................................................................2-101

2.10.2 FUSING ENTRANCE GUIDE.....................................................2-102

2.10.3 FUSING UNIT DRIVE.................................................................2-103

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2.10.4 FUSING LAMP CONTROL.........................................................2-104

2.10.5 OIL SUPPLY AND CLEANING...................................................2-105

2.10.6 PAPER COOLING......................................................................2-106

2.10.7 FUSING PRESSURE.................................................................2-107

2.10.8 HOT ROLLER STRIPPER RELEASE........................................2-108

2.11 PAPER EXIT/DUPLEX........................................................................2-109

2.11.1 OVERVIEW................................................................................2-109

2.11.2 PAPER EXIT MECHANISM........................................................2-110

2.11.3 DUPLEX DRIVE MECHANISM ..................................................2-111

2.11.4 INVERTER .................................................................................2-112

2.11.5 DUPLEX TRAY FEED MECHANISM.........................................2-114

2.11.6 BASIC DUPLEX FEED OPERATION.........................................2-115

2.12 ENERGY SAVER MODES..................................................................2-119

2.12.1 OVERVIEW................................................................................2-119

2.12.2 ENERGY SAVER (PANEL OFF) MODE ....................................2-120

2.12.3 LOW POWER MODE.................................................................2-121

2.12.4 OFF MODE.................................................................................2-122

2.12.5 SUMMARY.................................................................................2-124

2.13 OTHERS .............................................................................................2-125

2.13.1 OPERATION UNIT.....................................................................2-125

2.13.2 DOOR SAFETY SWITCH LOCK TOOLS...................................2-126

2.13.3 HDD CONTROL.........................................................................2-127

2.13.4 DATA PATH THROUGH THE INTERFACE BOARD.................2-129

3. INSTALLATION PROCEDURE................................................... 3-1

3.1 INSTALLATION REQUIREMENTS...........................................................3-1

3.1.1 ENVIRONMENT...............................................................................3-1

3.1.2 MACHINE LEVEL.............................................................................3-1

3.1.3 MINIMUM SPACE REQUIREMENTS...............................................3-2

3.1.4 POWER REQUIREMENTS..............................................................3-2

3.2 COPIER (A294).........................................................................................3-3

3.2.1 ACCESSORY CHECK......................................................................3-3

3.2.2 INSTALLATION PROCEDURE........................................................3-5

3.3 FINISHER INSTALLATION (B302)..........................................................3-12

3.3.1 ACCESSORY CHECK....................................................................3-12

3.3.2 INSTALLATION PROCEDURE......................................................3-13

3.4 LCT INSTALLATION (B303)....................................................................3-16

3.4.1 ACCESSORY CHECK....................................................................3-16

3.4.2 INSTALLATION PROCEDURE......................................................3-17

3.5 PUNCH UNIT INSTALLATION (A812)....................................................3-19

3.5.1 ACCESSORY CHECK....................................................................3-19

3.5.2 PUNCH UNIT INSTALLATION.......................................................3-20

3.6 A3/DLT TRAY (B331)..............................................................................3-23

3.6.1 ACCESSORY CHECK....................................................................3-23

3.6.2 INSTALLATION PROCEDURE......................................................3-24

3.7 KEY COUNTER INSTALLATION............................................................ 3-27

3.8 INTERFACE BOARD

(CD-RW/TANDEM COPY KIT/PRINTER CONTROLLER)......................3-30

3.8.1 INSTALLATION PROCEDURE......................................................3-30

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4 SERVICE TABLES....................................................................... 4-1

4.1 GENERAL CAUTIONS..............................................................................4-1

4.1.1 DRUM...............................................................................................4-1

4.1.2 DRUM UNIT .....................................................................................4-1

4.1.3 TRANSFER BELT UNIT...................................................................4-2

4.1.4 SCANNER UNIT...............................................................................4-2

4.1.5 LASER UNIT ....................................................................................4-2

4.1.6 CHARGE CORONA..........................................................................4-3

4.1.7 DEVELOPMENT ..............................................................................4-3

4.1.8 CLEANING.......................................................................................4-4

4.1.9 FUSING UNIT...................................................................................4-4

4.1.10 PAPER FEED.................................................................................4-4

4.1.11 USED TONER................................................................................4-4

4.2 SERVICE PROGRAM MODE....................................................................4-5

4.2.1 SERVICE PROGRAM MODE OPERATION.....................................4-5

4.2.2 SERVICE PROGRAM MODE TABLES..........................................4-10

4.2.3 TEST PATTERN PRINTING (SP2-902) .........................................4-59

4.2.4 INPUT CHECK...............................................................................4-60

4.2.5 OUTPUT CHECK...........................................................................4-68

4.2.6 SYSTEM PARAMETER AND DATA LISTS (SMC LISTS) .............4-70

4.2.7 MEMORY ALL CLEAR (SP5-801)..................................................4-70

4.2.8 SOFTWARE RESET......................................................................4-71

4.2.9 SYSTEM SETTING AND

COPY SETTING (UP MODE) RESET............................................4-71

4.3 PM COUNTER ........................................................................................4-72

4.3.1 PM COUNTER ACCESS PROCEDURE........................................4-72

4.4 PROGRAM DOWNLOAD........................................................................4-78

4.5 NVRAM DATA DOWNLOAD...................................................................4-80

4.6 LANGUAGE DATA DOWNLOAD............................................................4-81

4.7 STAMP DATA DOWNLOAD....................................................................4-81

4.8 USER PROGRAM MODE.......................................................................4-82

4.8.1 HOW TO ENTER AND EXIT UP MODE.........................................4-82

4.8.2 UP MODE TABLE ..........................................................................4-82

4.8.3 IMAGE QUALITY SETTING BY UP MODE....................................4-85

4.8.4 LEDS..............................................................................................4-91

4.9 TEST POINTS/DIP SWITCHES/LEDS....................................................4-92

4.9.1 DIP SWITCHES..............................................................................4-92

4.9.2 TEST POINTS................................................................................4-93

4.9.3 FUSES............................................................................................4-93

4.9.4 VARIABLE RESISTORS................................................................4-93

4.10 SPECIAL TOOLS AND LUBRICANTS..................................................4-94

4.10.1 SPECIAL TOOLS.........................................................................4-94

4.10.2 LUBRICANTS...............................................................................4-94

5 PREVENTIVE MAINTENANCE SCHEDULE............................... 5-1

5.1 PM PARTS................................................................................................5-1

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6. REPLACEMENT AND ADJUSTMENT........................................ 6-1

6.1 EXTERIOR................................................................................................6-1

6.1.1 FRONT.............................................................................................6-1

6.1.2 RIGHT ..............................................................................................6-2

6.1.3 LEFT.................................................................................................6-3

6.1.4 REAR................................................................................................6-4

6.2 DOCUMENT FEEDER..............................................................................6-5

6.2.1 COVER REMOVAL..........................................................................6-5

6.2.2 FEED UNIT REMOVAL AND

SEPARATION ROLLER REPLACEMENT .......................................6-7

6.2.3 FEED BELT REPLACEMENT..........................................................6-8

6.2.4 PICK-UP ROLLER REPLACEMENT................................................6-9

6.2.5 SENSOR REPLACEMENT.............................................................6-10

6.2.6 TRANSPORT BELT REPLACEMENT............................................6-14

6.2.7 MOTOR REPLACEMENT..............................................................6-15

6.2.8 FEED-IN CLUTCH REPLACEMENT..............................................6-17

6.3 SCANNER UNIT......................................................................................6-18

6.3.1 EXPOSURE GLASS.......................................................................6-18

6.3.2 LENS BLOCK.................................................................................6-19

6.3.3 ORIGINAL SIZE SENSORS...........................................................6-20

6.3.4 EXPOSURE LAMP.........................................................................6-21

6.3.5 LAMP REGULATOR.......................................................................6-22

6.3.6 OPTICS DUST FILTER..................................................................6-23

6.3.7 SCANNER H.P. SENSOR..............................................................6-24

6.3.8 SCANNER MOTOR........................................................................6-25

6.3.9 SCANNER DRIVE WIRES .............................................................6-26

6.4 LASER UNIT...........................................................................................6-29

6.4.1 CAUTION DECAL LOCATIONS.....................................................6-29

6.4.2 LDB AND LD FILTER REPLACEMENT .........................................6-30

6.4.3 POLYGON MIRROR MOTOR REPLACEMENT ............................6-31

6.4.4 LASER SYNCHRONIZATION DETECTOR REPLACEMENT........6-32

6.5 DRUM UNIT ............................................................................................6-33

6.5.1 DRUM UNIT REMOVAL AND DRUM REPLACEMENT.................6-33

6.5.2 QUENCHING LAMP REPLACEMENT...........................................6-34

6.5.3 GRID PLATE/CHARGE CORONA WIRE/

WIRE CLEANER REPLACEMENT ................................................6-35

6.5.4 DRUM POTENTIAL SENSOR REPLACEMENT............................6-37

6.5.5 CLEANING BLADE/ID SENSOR REPLACEMENT........................6-38

6.5.6 CLEANING BRUSH REPLACEMENT............................................6-39

6.5.7 PICK-OFF PAWL REPLACEMENT................................................6-40

6.5.8 DRUM FILTER REPLACEMENT....................................................6-41

6.6 DEVELOPMENT AND TONER SUPPLY................................................6-42

6.6.1 DEVELOPMENT UNIT REMOVAL.................................................6-42

6.6.2 DEVELOPER REPLACEMENT......................................................6-43

6.6.3 DEVELOPMENT AND AIR DUST FILTER REPLACEMENT.........6-45

6.6.4 DEVELOPMENT ENTRANCE, FRONT, AND

REAR SIDE SEALS........................................................................6-46

6.6.5 TONER DENSITY SENSOR REPLACEMENT...............................6-47

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6.6.6 TONER HOPPER SENSOR REPLACEMENT...............................6-48

6.6.7 DEVELOPMENT MOTOR REPLACEMENT ..................................6-49

6.6.8 DEVELOPMENT ROLLER SHAFT CLEANING.............................6-50

6.7 TRANSFER BELT UNIT..........................................................................6-51

6.7.1 TRANSFER BELT UNIT REMOVAL/INSTALLATION....................6-51

6.7.2 TRANSFER BELT REPLACEMENT...............................................6-53

6.7.3 TRANSFER BELT CLEANING BLADE REPLACEMTNT...............6-55

6.7.4 TRANSFER BELT BIAS BRUSH REPLACEMENT........................6-56

6.8 PAPER FEED..........................................................................................6-57

6.8.1 PAPER TRAY REMOVAL..............................................................6-57

6.8.2 PAPER FEED ROLLER REPLACEMENT......................................6-60

6.8.3 PAPER FEED AND VERTICAL TRANSPORT CLUTCH, AND TRAY LIFT, PAPER FEED, AND

PAPER END SENSOR REMOVAL...............................................6-61

6.8.4 REAR FENCE RETURN SENSOR REPLACEMENT.....................6-64

6.8.5 REAR FENCE HP SENSOR REPLACEMENT...............................6-65

6.8.6 RIGHT 1ST TRAY PAPER SENSOR REPLACMENT....................6-66

6.8.7 BOTTOM PLATE LIFT WIRE REPLACEMENT .............................6-67

6.8.8 PAPER DUST REMOVER CLEANING..........................................6-69

6.8.9 REGISTRATION SENSOR CLEANING.........................................6-70

6.8.10 UNIVERSAL TRAY SIZE SWITCH REPLACEMENT...................6-71

6.8.11 1ST TRAY LIFT MOTOR REMOVAL ...........................................6-72

6.8.12 LIFT MOTOR REMOVAL (2ND & 3RD TRAYS)...........................6-73

6.8.13 PAPER FEED MOTOR REMOVAL..............................................6-74

6.8.14 RELAY MOTOR, UPPER RELAY CLUTCH,

LCT RELAY CLUTCH REMOVAL................................................6-75

6.8.15 REGISTRATION MOTOR REMOVAL..........................................6-76

6.8.16 COPIER FEED UNIT/DEVELOPMENT FAN MOTOR

REMOVAL....................................................................................6-77

6.8.17 LCT RELAY AND RELAY SENSOR REMOVAL..........................6-78

6.8.18 TANDEM FEED TRAY PAPER SIZE CHANGE...........................6-79

6.8.19 MECHANICAL SIDE REGISTRATION ADJUSTMENT................6-82

6.9 FUSING UNIT..........................................................................................6-83

6.9.1 OIL SUPPLY & CLEANING WEB UNIT REMOVAL.......................6-83

6.9.2 HOT ROLLER UNIT REMOVAL AND

PRESSURE ROLLER REPLACEMENT.........................................6-84

6.9.3 HOT ROLLER REPLACEMENT.....................................................6-86

6.9.4 OIL SUPPLY & CLEANING WEB REPLACEMENT.......................6-88

6.9.5 WEB CLEANING ROLLER REPLACEMENT.................................6-90

6.9.6 HOT ROLLER STRIPPER REPLACEMENT..................................6-91

6.9.7 PRESSURE ROLLER STRIPPER REPLACEMENT......................6-92

6.9.8 PRESSURE ROLLER CLEANING ROLLER REPLACEMENT......6-93

6.9.9 FUSING AND EXIT UNIT REMOVAL.............................................6-94

6.9.10 FUSING PRESSURE ADJUSTMENT..........................................6-95

6.10 PAPER EXIT/DUPLEX UNIT.................................................................6-96

6.10.1 EXIT SENSOR REPLACEMENT..................................................6-96

6.10.2 DUPLEX UNIT REMOVAL ...........................................................6-97

6.10.3 DUPLEX UNIT INNER COVER REMOVAL..................................6-98

6.10.4 JOGGER MOTOR REPLACEMENT ............................................6-99

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6.10.5 DUPLEX UNIT CLUTCH REPLACEMENT.................................6-100

6.10.6 DUPLEX ENTRANCE SENSOR REPLACEMENT.....................6-101

6.10.7 DUPLEX TRANSPORT SENSORS 2 & 3 ..................................6-102

6.10.8 DUPLEX TRANSPORT SENSOR 1/

DUPLEX INVERTER SENSOR..................................................6-103

6.11 TONER BANK.....................................................................................6-104

6.11.1 WASTE TONER BOTTLE REMOVAL........................................6-104

6.11.2 TONER BANK UNIT REMOVAL ................................................6-105

6.11.3 TONER SUPPLY MOTOR AND

TONER SUPPLY MOTOR SENSOR REMOVAL.......................6-108

6.11.4 ACCESS TO INSIDE THE TONER BANK..................................6-109

6.12 BOARDS AND OTHER ITEMS...........................................................6-110

6.12.1 SICU BOARD.............................................................................6-110

6.12.2 HARD DISK DRIVE....................................................................6-111

6.12.3 BCU BOARD..............................................................................6-112

6.12.4 I/O BOARD.................................................................................6-113

6.12.5 PSU............................................................................................6-114

6.12.6 CHARGE/GRID/BIAS POWER PACK........................................6-115

6.12.7 FUSING/DUPLEX MOTOR REPLACEMENT.............................6-116

6.12.8 DRUM MOTOR REPLACEMENT...............................................6-117

6.13 COPY IMAGE ADJUSTMENT: PRINTING/SCANNING......................6-118

6.13.1 PRINTING ..................................................................................6-118

6.13.2 PARALLELOGRAM IMAGE ADJUSTMENT ..............................6-121

6.13.3 SCANNING.................................................................................6-123

6.13.4 ADF IMAGE ADJUSTMENT.......................................................6-124

6.14 TOUCH SCREEN CALIBRATION.......................................................6-125

7 TROUBLESHOOTING ................................................................. 7-1

7.1 SERVICE CALL CONDITIONS.................................................................7-1

7.1.1 SUMMARY.......................................................................................7-1

7.1.2 SC CODE DESCRIPTIONS .............................................................7-2

7.2 ELECTRICAL COMPONENT DEFECTS ................................................7-37

7.2.1 SENSORS......................................................................................7-37

7.2.2 SWITCHES.....................................................................................7-41

7.3 BLOWN FUSE CONDITIONS.................................................................7-42

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OPTION

3,000-SHEET FINISHER (B302)

1. OVERALL MACHINE INFORMAT ION..................................B302-1

1.1 SPECIFICATIONS.............................................................................. B302-1

1.2 MECHANICAL COMPONENT LAYOUT ............................................ B302-3

1.3 ELECTRICAL COMPONENT DESCRIPTION.................................... B302-4

1.4 DRIVE LAYOUT................................................................................. B302-6

2. DETAILED DESCRIPTIONS.................................................B302-7

2.1 TRAY AND STAPLER JUNCTION GATE.......................................... B302-7

2.2 PAPER PRE-STACKING ................................................................... B302-8

2.3 JOGGER UNIT PAPER POSITIONING ............................................. B302-9

2.4 STAPLER UNIT MOVEMENT.......................................................... B302-10

2.5 STAPLER......................................................................................... B302-12

2.6 FEED-OUT....................................................................................... B302-14

2.7 SHIFT TRAY UP/DOWN MOVEMENT............................................. B302-15

2.8 SHIFT TRAY SIDE-TO-SIDE MOVEMENT...................................... B302-16

2.9 PUNCH UNIT DRIVE ....................................................................... B302-17

2.10 PUNCH WASTE COLLECTION..................................................... B302-18

2.11 JAM CONDITIONS......................................................................... B302-19

3. SERVICE TABLES..............................................................B302-20

3.1 DIP SWITCHES................................................................................ B302-20

3.2 TEST POINTS.................................................................................. B302-20

3.3 FUSES ............................................................................................. B302-20

4. REPLACEMENT AND ADJUSTMENT................................B302-21

4.1 COVER REPLACEMENT................................................................. B302-21

4.2 POSITIONING ROLLER REPLACEMENT ....................................... B302-24

4.3 ALIGNMENT BRUSH ROLLER REPLACEMENT............................ B302-25

4.4 SENSOR REPLACEMENT .............................................................. B302-26

4.4.1 STACK HEIGHT 1, 2 AND EXIT GUIDE OPEN SENSOR...... B302-26

4.4.2 UPPER TRAY PAPER LIMIT AND EXIT SENSOR................. B302-27

4.4.3 SHIFT TRAY EXIT SENSOR................................................... B302-28

4.4.4 ENTRANCE AND

STAPLER TRAY ENTRANCE SENSORS .............................. B302-29

4.4.5 PRE-STACK STOPPER SENSOR .......................................... B302-30

4.4.6 STAPLE WASTE HOPPER SENSOR..................................... B302-31

4.4.7 STAPLER ROTATION HP AND

STAPLER RETURN SENSORS.............................................. B302-32

4.5 STAPLER REMOVAL....................................................................... B302-33

4.6 PUNCH POSITION ADJUSTMENT.................................................. B302-34

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LCT (B303)

1. OVERALL MACHINE INFORMAT ION..................................B303-1

1.1 SPECIFICATIONS.............................................................................. B303-1

1.2 MECHANICAL COMPONENT LAYOUT ............................................ B303-2

1.3 ELECTRICAL COMPONENT DESCRIPTIONS................................. B303-3

1.4 DRIVE LAYOUT................................................................................. B303-5

2. DETAILED DESCRIPTIONS.................................................B303-6

2.1 PAPER FEED..................................................................................... B303-6

2.2 PICK-UP AND FEED.......................................................................... B303-7

2.2.1 OVERVIEW............................................................................... B303-7

2.2.2 PICK-UP AND FEED................................................................. B303-8

2.2.3 SEPARATION ROLLER RELEASE........................................... B303-9

2.3 PAPER LIFT..................................................................................... B303-10

2.3.1 TRAY DETECTION................................................................. B303-10

2.3.2 LIFT MECHANISM.................................................................. B303-10

2.3.3 LIFT SENSOR......................................................................... B303-11

2.4 PAPER SIZE DETECTION............................................................... B303-12

2.5 PAPER END DETECTION............................................................... B303-13

3. REPLACEMENT AND ADJUSTMENT................................B303-14

3.1 EXTERIOR COVER REMOVAL....................................................... B303-14

3.2 INNER COVER REMOVAL.............................................................. B303-15

3.3 PAPER FEED ROLLER REPLACEMENT........................................ B303-16

3.4 LCT MOTOR REPLACEMENT.........................................................B303-17

3.5 RELAY SENSOR REPLACEMENT.................................................. B303-18

3.6 PAPER HEIGHT SENSOR AND

PAPER SIZE SWITCH REPLACEMENT ......................................... B303-19

3.7 MAIN DRIVE BELT REPLACEMENT............................................... B303-20

3.8 SIDE REGISTRATION ADJUSTMENT............................................ B303-21

A3/DLT TRAY KIT (B331)

1. OVERALL MACHINE INFORMAT ION..................................B331-1

1.1 SPECIFICATIONS.............................................................................. B331-1

2. DETAILED DESCRIPTIONS.................................................B331-2

2.1 SECTIONAL DESCRIPTION.............................................................. B331-2

3. REPLACEMENT AND ADJUSTMENT..................................B331-3

3.1 BOTTOM PLATE LIFT WIRE REPLACEMENT................................. B331-3

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CHANGES MADE FROM THE A294 I / A295 I MODELS

1 DETAILED SECTION DESCRIPTIONS ............................. A294 II-1

1.1 TONER AND DEVELOPER.............................................................A294 II-1

1.2 NEWLY ADDED: DEVELOPMENT S UCTION MOTOR AND

SUCKED TONER COLLECTION BOTTLE.....................................A294 II-1

1.3 DEVELOPMENT UNIT....................................................................A294 II-2

1.4 TONER BANK UNIT........................................................................A294 II-3

1.5 CLEANING UNIT.............................................................................A294 II-3

1.6 FUSING UNIT..................................................................................A294 II-4

1.7 NEW ADDITIONS TO TRANSFER CURRENT CONTROL ............A294 II-5

1.8 CHARGE CORONA UNIT...............................................................A294 II-6

1.9 ELECTRICAL COMPONENTS........................................................A294 II-6

2 SERVICE TABLES.............................................................A294 II-9

2.1 SERVICE PROGRAM MODE..........................................................A294 II-9

3 PREVENTIVE MAINTENANCE SCHEDULE................... A294 II-13

3.1 PM PARTS....................................................................................A294 II-13

4 TROUBLESHOOTING ..................................................... A294 II-14

4.1 SERVICE CALL CONDITIONS.....................................................A294 II-14

A294 II-x

Page 11

18 July, 2001 GENERAL CAUTIONS

4. SERVICE TABLES

4.1 GENERAL CAUTIONS

Do not turn off either of the power switches while any of the electrical components are active. Doing so might cause damage to units such as the transfer belt, drum, and development unit when they are pulled out of or put back into the copier.

4.1.1 DRUM

An organic photoconductor (OPC) drum is more sensitive to light and ammonia gas than a selenium drum. Follow the cautions below when handling an OPC drum.

1. Never expose the drum to direct sunlight.

2. Never expose the drum to direct light of more than 1,000 Lux for more than a minute.

3. Never touch the drum surface with bare hands. When the drum surface is touched with a finger or becomes dirty, wipe it with a dry cloth or clean it with wet cotton. Wipe with a dry cloth after cleaning with wet cotton.

4. Never use alcohol to clean the drum; alcohol dissolves the drum surface.

Tables

Service

5. Store the drum in a cool, dry place away from heat.

6. Take care not to scratch the drum as the drum layer is thin and is easily damaged.

7. Never expose the drum to corrosive gases such as ammonia gas.

8. Always keep the drum in the protective sheet when keeping the drum unit, or the drum itself, out of the copier. Doing so avoids exposing it to bright light or direct sunlight, and will protect it from light fatigue.

9. Dispose of used drums in accordance with local regulations.

10. When installing a new drum, do the Auto Process Control Data Adjustment (SP 2-962).

4.1.2 DRUM UNIT

1. Before pulling out the drum unit, place a sheet of paper under the drum unit to catch any spilt toner.

2. Make sure that the drum unit is set in position and the drum stay is secured with a screw before the main switch is turned on. If the drum unit is loose, poor contact of the drum connectors may cause electrical noise, resulting in unexpected malfunctions (RAM data change is the worst case).

3. To prevent drum scratches, remove the development unit before removing the drum unit.

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GENERAL CAUTIONS 18 July, 2001

4.1.3 TRANSFER BELT UNIT

1. Never touch the transfer belt surface with bare hands.

2. Take care not to scratch the transfer belt, as the surface is easily damaged.

3. Before installing the new transfer belt, clean all the rollers and the inner p art of the transfer belt with a dry cloth to prevent the belt from slipping.

4.1.4 SCANNER UNIT

1. When installing the exposure glass, make sure that the white p aint is at the rear left corner.

2. Clean the exposure glass with alcohol or glass cleaner to reduce the amount of static electricity on the glass surface.

3. Use a cotton pad with water or a blower brush to clean the mirrors and lens.

4. Do not bend or crease the exposure lamp flat cable.

5. Do not disassemble the lens unit. Doing so will throw the lens and the copy image out of focus.

6. Do not turn any of the CCD positioning screws. Doing so will throw the CCD out of position.

4.1.5 LASER UNIT

1. Do not loosen the screws that secure the LD drive board to the laser diode casing. Doing so would throw the LD unit out of adjustment.

2. Do not adjust the variable resistors on the LD unit, as they are adjusted in the factory.

3. The polygon mirror and F-theta lenses are very sensitive to dust. Do not open the optical housing unit.

4. Do not touch the glass surface of the polygon mirror motor unit with bare hands.

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18 July, 2001 GENERAL CAUTIONS

4.1.6 CHARGE CORONA

1. Clean the corona wires with a dry cloth. Do not use sandpaper or solvent.

2. Clean the charge corona casing with water first to remove NOx based compounds. Then clean it with alcohol if any toner still remains on the casing.

3. Clean the end block with a blower brush first to remove toner and paper dust. Then clean with alcohol if any toner still remains.

4. Do not touch the corona wires with bare hands. Oil stains from fingers may cause uneven image density on copies.

5. Make sure that the wires are correctly between the cleaner pads and that there is no foreign material (iron filings, etc.) on the casing.

6. When installing new corona wires, do not bend or scratch the wire surface. Doing so may cause uneven charge. Also be sure that the corona wires are correctly positioned in the end blocks. (See Charge Corona Wire Replacement)

7. Clean the grid plate with a blower brush (not with a dry cloth).

8. Do not touch the charge grid plate with bare hands. Also, do not bend the charge grid plate or make any dent in it. Doing so may cause uneven charge.

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4.1.7 DEVELOPMENT

1. Be careful not to nick or scratch the development roller.

2. Place the development unit on a sheet of paper after removing it from the copier.

3. Never disassemble the development roller assembly. The position of the doctor plate is set with special tools and instruments at the factory to ensure the proper gap between the doctor blade and the development roller.

4. Clean the drive gears after removing used developer.

5. Dispose of used developer in accordance with local regulations.

6. Never load types of developer and toner into the development unit other than specified for this model. Doing so will cause poor copy quality and toner scattering.

7. Immediately after installing new developer, the TD sensor initial setting procedure should be performed to avoid damage to the copier. Do not perform the TD sensor initial setting with used developer. Do not make any copies before doing the TD sensor initial setting.

8. When u sing a vacuum cleaner to clean the development unit casing, al ways ground the casing with your fingers to avoid damaging the toner density sensor with static electricity.

9. When replacing the TD sensor, the developer should be replaced and then the TD sensor initial setting procedure (SP2-801) should be done, followed by process control initialization (SP2-962).

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GENERAL CAUTIONS 18 July, 2001

4.1.8 CLEANING

1. When servicing the cleaning section, be careful not to damage the edge of the cleaning blade.

2. Do not touch the cleaning blade with bare hands.

3. Before disassembling the cleaning section, place a sheet of paper under it to catch any toner falling from it.

4.1.9 FUSING UNIT

1. After installing the fusing thermistor, make sure that it is in contact with the hot roller and that it is movable.

2. Be careful not to damage the edges of the hot roller strippers or their tension springs.

3. Do not touch the fusing lamp and rollers with bare hands.

4. Make sure that the fusing lamp is positioned correctly and that it does not touch the inner surface of the hot roller.

4.1.10 PAPER FEED

1. Do not touch the surface of the pick-up, feed, and separation rollers.

2. To avoid paper misfeeds, the side fences and end fence of the paper tray must be positioned correctly to align with the actual paper size.

4.1.11 USED TONER

1. We recommend checking the amount of used toner at every EM.

2. Dispose of used toner in accordance with local regulations. Never throw toner into an open flame, for toner dust may ignite.

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18 July, 2001 SERVICE PROGRAM MODE

4.2 SERVICE PROGRAM MODE

4.2.1 SERVICE PROGRAM MODE OPERATION

The service program (SP) mode is used to check electrical data, change modes, and adjust values.

Service Program Access Procedure

Entering SP mode

1) Press the following keys in sequence.

Hold the " key for more than 3 seconds.

2) A menu of SP modes is displayed on the LCD.

→

Tables

Service

A294M001.PCX

NOTE: The installed applications appear as Copy SP and Printer SP. If the

printer application is not installed, its name does not appear.

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SERVICE PROGRAM MODE 18 July, 2001

3) Touch the application which you need. Then, the application’s SP mode

display will appear, as shown.

A294M002.PCX

Exiting SP mode

1) Touch the “Exit” keys to return to the standby mode display.

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18 July, 2001 SERVICE PROGRAM MODE

Accessing Copy Mode from within an SP Mode

1) Touch the “Copy Mode” key.

A294M003.PCX

2) Select the appropriate copy mode and make trial copies.

3) To return to the SP mode, touch the “SP mode” key.

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4-7

A294M004.PCX

Page 18

SERVICE PROGRAM MODE 18 July, 2001

Selecting the Program Number

Program numbers are composed of two or three levels. There are two ways to select the program number.

Ten-key Pad

Input the required program number.

Touch Panel

1) Touch the 1st level program.

2) Touch the 2nd level program.

NOTE: A “*” mark indicates that there are 3rd level programs.

3) Touch the 3rd level program.

A294M002.PCX

A294M003.PCX

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18 July, 2001 SERVICE PROGRAM MODE

A294M005.PCX

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SERVICE PROGRAM MODE 18 July, 2001

Inputting a Value or Setting for an SP Mode

1. Select the required program mode as explained on the previous page.

2. Enter the required setting using the ten-key pad, then touch the “Start” key or OK key or $ key.

NOTE: 1) If you forget to touch the “Start” key or OK key, the previous value

remains.

2) Change between “+” and “–” using the “•” key before entering the required value.

3. Exit SP mode.

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18 July, 2001 SERVICE PROGRAM MODE

4.2.2 SERVICE PROGRAM MODE TABLES

NOTE: 1) In the Function column, comments are in italics.

2) In the Settings column, the default value is in bold letters.

3) S and B in the right hand side of the mode number column means that this mode is stored in the NVRAM on the SICU (S) or BCU (B). If you do a RAM reset, all these SP modes will be reset to their factory settings.

4) [A294 I], [A295 I], [A294 II] and [A295 II] in the Settings column mean the following product types: [A294 I]: Existing 85 cpm model. [A295 I]: Existing 105 cpm model. [A294 II]: Enhanced 85 cpm model. [A295 II]: Enhanced 105 cpm model.

1-001

1-002

Mode No.

(Class 1, 2 and 3)

Leading Edge Registration

Paper Tray

(Copier and LCT)

2 Duplex Tray

Side-to-Side Registration

1Tray-1

2Tray-2

Function Settings

Adjusts the printing leading edge registration for feeding from the trays using the trimming area pattern (SP2-902-3, No.15).

Use the “ before entering the value. The specification is 3 See "Replacement and Adjust m ent – Copy Image Adjustments" for details.

Adjusts the printing leading edge registration for the duplex feeding using the trimming area pattern (SP2-902-3, No.15).

Use the “ before entering the value.

The specification is 3 See "Replacement and Adjust m ent – Copy Image Adjustments" for details.

Adjusts the printing side-to-side registration from the 1st paper feed station using the trimming area pattern (SP2-902-3, No.15).

Use the “ before entering the value. See “Replacement and Adjustment – Copy Image Adjustments” for details on SP1-002.

Adjusts the printing side-to-side registration from the 2nd paper feed station using the trimming area pattern (SP2-902-3, No.15).

Use the “ before entering the value.

The specification is 0

•

” key to toggle between + and –

2 mm.

•

” key to toggle between + and –

2 mm.

•

” key to toggle between + and –

•

” key to toggle between + and –

2.0 mm.

+9 ~ –9

0.1 mm/step

+3.0 mm

+9 ~ –9

0.1 mm/step

–1.5 mm

+9 ~ –9

0.1 mm/step

–1.5 mm

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SERVICE PROGRAM MODE 18 July, 2001

1-002

1-003

Mode No.

(Class 1, 2 and 3)

Side-to-Side Registration

3Tray-3

4 Tray-4 (LCT)

5 Tray-5 (LCT)

6 Tray-6 (LCT)

7 Duplex Tray

Paper Buckle Adjustment (Registration)

1 Copier Paper

Tray

2LCT Tray 3 Duplex Tray B

Duplex Fence Adjustment1-008

Fusing Idling After Low Power Mode1-103

Adjusts the printing side-to-side registration from the 3rd paper feed station using the trimming area pattern (SP2-902-3, No.15).

Use the “

before entering the value. The specification is 0

Adjusts the printing side-to-side registration from the 4th paper feed station using the trimming area pattern (SP2-902-3, No.15).

Use the “ before entering the value. The specification is 0

Adjusts the printing side-to-side registration from the 5th paper station using the trimming area pattern (SP2-902-3, No.15).

Use the “ before entering the value. The specification is 0

Adjusts the printing side-to-side registration from the 6th paper station using the trimming area pattern (SP2-902-3, No.15).

Use the “ before entering the value. The specification is 0

Adjusts the printing side-to-side registration from the duplex tray using the trimming area pattern (SP2-902-3, No.15).

Use the “ before entering the value. The specification is 0

Adjusts the relay clutch timing at

registration. The relay clutch timing determines the amount of paper buckle at

registration. (A +ve setting leads to more buckling.)

Adjusts the distance between the front and

rear fences.

Selects whether fusing idling is done or not when recovering from the low power mode.

Function Settings

•

” key to toggle between + and –

2.0 mm.

•

” key to toggle between + and –

2.0 mm.

•

” key to toggle between + and –

2.0 mm.

•

” key to toggle between + and –

2.0 mm.

•

” key to toggle between + and –

2.0 mm.

+9 ~ –9

0.1 mm/step

–1.5 mm

+9 ~ –9

0.1 mm/step

–2.5 mm

+9 ~ –9

0.1 mm/step

–2.5 mm

+9 ~ –9

0.1 mm/step

–2.5 mm

+9 ~ –9

0.1 mm/step

–3.0 mm

+9 ~ –9 1 mm/step

+4.0 mm

+4 ~ –4

0.5 mm/step

0.0 mm

0: Not done

1: Done

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18 July, 2001 SERVICE PROGRAM MODE

1-105

Mode No.

(Class 1, 2 and 3)

Fusing Temperature Adjustment

Fusing

Temperature in Waiting Condition

2Fusing

Temperature Lower Limit

3Fusing

Temperature Correction (<A4/LT)

4Fusing

Temperature Correction (A4/LT)

Fusing Temperature Display1-106

Fusing Nip Band Check1-109

Web Motor Control1-902

1Web

Consumption

Adjusts the fusing temperature for standby.

Adjusts the fusing temperature lower limit. When the fusing unit falls below this temperature, the machine stops copying. Copying automatically restarts when the

fusing temperature recovers.

This SP mode is for designer’s use only.

Specifies the amount to raise the fusing temperature from standby mode to print on A4/LT or smaller width paper.

Specifies the amount to raise the fusing temperature from standby mode to print on paper of A4/LT width.

Displays the fusing temperature.

Feeds a sheet from a paper tray and stops the sheet when it is between the hot roller and the pressure roller. Use an OHP sheet. After keeping the sheet there for 30 seconds, the sheet is automatically fed out. For details, see Replacement and Adjustment – Fusing.

Displays the percentage of the web consumption in 1% steps (0% ~ 107%). The value can be manually input using

number keys.

Function Settings

[A294 I & II] 168 ~ 178 1°C/step

173°°°°C

[A295 I & II] 173 ~ 178 1°C/step

178°°°°C

[A294 I & II] 157 ~ 163 1°C/step

163°°°°C

[A295 I & II] 157 ~ 167 1°C/step

167°°°°C

+0 ~ +20 1°C/step [A294 I & II]

+15°°°°C

[A295 I & II]

+20°°°°C

–5 ~ +20 1°C/step [A294 I]

+10°°°°C

[A295 I]

+15°°°°C

[A294 II]

+5°°°°C (US) +10°°°°C (EU)

[A295 II]

+5°°°°C (US) +15°°°°C (EU)

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SERVICE PROGRAM MODE 18 July, 2001

1-902

2-001

Mode No.

(Class 1, 2 and 3)

Web Motor Control

Web Motor

Drive Interval

Web Motor

Drive Time

Web Near End

Setting

Duplex Stop Position – Right1-906

Charge Corona Bias Adjustm ent

1 Image Area

(Auto Process Control OFF)

2 ID Sensor

Pattern (Auto Process Control OFF)

Change the interval of copy operation time after which the web motor is driven

Changes the time that the web motor is driven.

Changes the web consumption ratio at which web near end is displayed.

About 40k A4 copies can be made after the

web consumption reaches 100%.

Changes the paper stop position in the duplex unit after passing duplex transport

sensor 2.

For designer use only.

Adjusts the voltage applied to the grid plate during copying when auto process control is off.

Normally, there is no need to adjust this.

If there is an ID or TD sensor problem, the machine goes into fixed toner supply mode. After replacing the drum or charge corona wire, change this value to the default.

Adjusts the voltage applied to the grid plate when making the ID sensor pattern, when auto process control is switched off.

Normally, there is no need to adjust this. If the user wants high density copies, the

sensor pattern must be lighter, so this voltage must be a higher negative voltage.

Function Settings

[A294/A295 I] 15 ~ 130 1 s/step

[A294 I] 42 s [A295 I] 34 s

[A294/A295 II] 3 ~ 130 1 s/step [A294 II]

11 s (EU) 21 s (US)

[A295 II]

9 s (EU) 17 s (US)

[A294/A295 I]

0.1 ~ 3.0

0.1 s/step

0.8 s

[A294/A295 II]

0.3 ~ 3.5

0.1 s/step

2.8 s

0 ~ 105 1%/step [A294/A295 I]

100%

[A294/A295 II]

86% (EU) 90% (US)

–10 ~ 10 2 mm/step

–8 mm

–600 ~ –1,300 10 V/step

–1,000 V

–600 ~ –1,300 10 V/step

–800 V

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18 July, 2001 SERVICE PROGRAM MODE

2-001

2-101

Mode No.

(Class 1, 2 and 3)

Charge Corona Bias Adjustm ent

Image Area

(Auto Process Control ON)

Adjusts the voltage applied to the grid plate during copying when auto process control is switched on.

This voltage changes every time auto process control starts up (every time the machine is switched on)

4 Grid Voltage for

Transparent Sheet

Adjusts the voltage applied to the grid plate when translucent mode is selected. Use this if there is a copy quality problem

when making copies on translucent paper. Normally there is no need to adjust this. See 2-001-1.

5 Total Corona

Current

Total Corona

Current (Photo mode)

(Auto Process Control)

Adjusts the current applied to the charge corona wire except for Photo mode.

Adjusts the current applied to the charge corona wire for Photo mode.

Adjusts the target V Control Initial Setting.

Printing Erase Margin

Adjusts the leading edge erase margin.1 Leading Edge

See “Replacement and Adjustment – Copy

Image Adjustments” for more on SP2-101.

Function Settings

–600 ~ –1,300 10 V/step [A294/A295 I]

–1,000 V

[A294/A295 II]

–950 V

–600 ~ –1,300 10 V/step [A294/A295 I]

–1,070 V

[A294/A295 II]

–950 V

–1,400 ~ –2,800 100µA/step

–1,400 µµµµA

1,400 ~ –2,800 100µA/step

–1,600 µµµµA

voltage for Process

–800 ~ –1,000 10 V/step [A294/A295 I]

–970 V

[A294/A295 II]

–850 V

0.0 ~ 9.0

0.1 mm/step

2.5 mm

Tables

Service

2-103

4Right

LD Power Adjustment

2 LD2 - 600dpi

Adjusts the trailing edge erase margin.2 Trailing Edge

Adjusts the left side erase margin.3 Left

Adjusts the right side erase margin.

Adjusts the power of LD1.1 LD1 - 600dpi

Do not change the value.

Adjusts the power of LD2.

Do not change the value.

4-15

0.0 ~ 9.0

0.1 mm/step

2.5 mm

0.0 ~ 9.0

0.1 mm/step

2.0 mm

0.0 ~ 9.0

0.1 mm/step

2.0 mm

–127 ~ +127 1/step 1 = 1.1 µW

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SERVICE PROGRAM MODE 18 July, 2001

2-103

2-114

2-201

Mode No.

(Class 1, 2 and 3)

LD Power Adjustment

Adjusts the power of LD3.3 LD3 - 600dpi

Do not change the value.

Adjusts the power of LD4.4 LD4 - 600dpi

Do not change the value.

LD1 Power

Adjustment (Start/End)

LD2 Power

Adjustment (Start/End)

LD3 Power

Adjustment (Start/End)

LD4 Power

Adjustment (Start/End)

LD Power Adjustment (for ID pattern)2-104

Printer Dot Edge Parameter Setti ng

1 Leading Dot

Level Setting (Left Edge)

2 Trailing Dot

Level Setting (Right Edge)

3 Multiple Dot

Level Setting S

4 Independent

Dot Level Setting

Development Bias Adjustment

2 ID Sensor

Pattern

Factory use only. Do not use this SP

mode.

Factory use only. Do not use this SP

mode.

Factory use only. Do not use this SP

mode.

Factory use only. Do not use this SP

mode.

Selects the LD power for making the ID pattern when auto process control is

switched on. Do not use unless advised.

Changes the LD power level for the left

edge pixel in printer mode, if FCI is off. Changes the LD power level for the left

edge pixel in printer mode, if FCI is off. Changes the LD power level for continuous

pixels in printer mode, if FCI is off. Changes the LD power level for

independent dots in printer mode, if FCI is off.

Adjusts the development bias for copying.1 Image Area

This can be adjusted as a temporary measure if faint copies appear due to an

aging drum.

Adjusts the development bias for making the ID sensor pattern for V when the auto process control is set to off.

This should not be used in the field,

because it affects ID sensor pattern density, which affects toner supply.

Function Settings

–127 ~ +127 1/step 1 = 1.1 µW

Start Stop

0 ~ 7 1/step

20 ~ 100% 1% step

50%

20 ~ 100% 1% step

50%

20 ~ 100% 1% step

100%

20 ~ 100% 1% step

50%

–200 ~ –700 10 V/step [A294/A295 I]

–530 V

[A294/A295 II]

–650 V

–200 ~ –700

measurement

10 V/step

–400 V

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18 July, 2001 SERVICE PROGRAM MODE

2-201

2-207

2-208

2-209

2-210

Mode No.

(Class 1, 2 and 3)

Development Bias Adjustment

Transparent

Sheet

4 ID Sensor

Development Potential

Forced Toner Supply

1 Forced Toner

Supply

2 Toner Bank

Toner Setup

Toner Supply Mode

Toner Supply Rate

ID Sensor Pattern Interval

Function Settings

Adjusts the development bias for copying onto translucent sheets.

Adjusts the development potential for making the ID sensor pattern for V

measurement when the auto process control is set on.

Forces toner supply for 7 seconds from the toner bank through the toner hopper to the development unit.

This mode finishes automatically after the toner is supplied 7 times (1 s for each time).

Turns on the main motor, development motor, development bias, toner supply motor and charge corona. Then turns on the toner supply coil clutch to supply toner to the toner hopper, but not to the development unit. It takes about 7 minutes.

This mode should be used to fill the toner transport path with toner after cleaning the toner supply unit, or at installation.

Selects the toner supply mode.

Use image pixel count mode only as a temporary countermeasure if the ID or TD sensor is defective.

Adjusts the toner supply rate from the hopper.

Increasing this value reduces the toner supply roller clutch on time. Use a lower value if the user tends to make lots of copies that have a high proportion of black.

Changes the interval for making the ID sensor pattern (V

SP/VSG

detection).

If the user normally makes copies with a high proportion of black, reduce the interval.

–200 ~ –700 10 V/step [A294/A295 I]

–530 V

[A294/A295 II]

–650 V

180 ~ 380 1 V/step

280 V

Start

Sensor Control

Pixel Count Control

100 ~ 2,000 10 mg/s/step [A294 I & II]

800 mg/s

[A295 I & II]

1000 mg/s

0 ~ 500 1 copy/step

10 copies

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SERVICE PROGRAM MODE 18 July, 2001

2-220

2-301

Mode No.

(Class 1, 2 and 3)

REF

Manual Setting

VT Display2-223

Toner Bank Toner Discharge2-226

Toner Supply Mode Display2-227

Transfer Current Adjustment

11st Copy Side

Function Settings

Adjusts the TD sensor reference voltage

REF

Change this value after replacing the development unit with another one that already contains toner. For example, when using a development unit from another machine for test purposes, do the following:

1. Check the value of SP2-220 in both the machine containing the test unit and the machine that you are going to move it to.

2. Install the test development unit, then input the V

for this unit into SP2-220.

REF

3. After the test, put back the old development unit, and change SP2-220 back to the original value.

Displays the current TD sensor output voltage.

This SP removes toner from the toner bank to the toner hopper. After turning the toner supply motor and the toner bank motor on, the toner supply coil clutch turns on and off at 2 second intervals. The motors and clutch stop when the toner near-end sensor (in the toner bank unit) detects no toner. Even if the sensor continues to detect toner, this operation stops when the clutch has been turned on and off 10 times, so this SP may have to be repeated to clean out the system completely.

Displays the toner supply mode used for the last copy. 1: ID Sensor and TD Sensor (from the 11th

copy, using V

– V

REF

)

2: ID Sensor and TD Sensor (using

SP/VSG

) – before the 10th copy of a job

3: TD Sensor – temporary mode when ID

sensor output is abnormal

4: Image Pixel Count

Adjusts the current applied to the transfer belt during copying on the 1st side of the paper.

If the user uses thicker paper, the current may have to be increased to ensure sufficient transfer of toner.

0 ~ 5.0

0.01 V/step

2.5 V

Start

10 ~ 200 1 µA/step [A294 I & II]

120 µµµµA

[A295 I & II]

140 µµµµA

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18 July, 2001 SERVICE PROGRAM MODE

2-301

2-506

2-801

Mode No.

(Class 1, 2 and 3)

Transfer Current Adjustment

2 Thick Paper

3 OHP Sheet

4 Transparent

Paper

5 2nd Copy

6 Between Pages

Cleaning Interval – Multiple Copy

1On/Off

2 Interval

TD Sensor Initial Setting

Adjusts the current applied to the transfer belt during copying on thick paper.

See above.

Adjusts the current applied to the transfer belt during copying on OHP sheet.

See above. If the user normally feeds thicker paper from the bypass tray, use a higher setting.

Adjusts the current applied to the transfer belt during copying on translucent paper.

Adjusts the current applied to the transfer belt during copying on the 2nd side of the paper.

Adjusts the current applied to the transfer belt between the pages.

Selects whether multiple copy jobs are stopped at regular intervals for the following purposes.

1. Stop and turn the drum motor in reverse

2. Make an ID sensor pattern to correct the

The interval depends on SP2-506-2. Use if the drum gets dirty or images get too pale or too dark during a long job. Normally keep at ‘No’, because the ‘Yes’ setting causes the machine to stop copying every 15 minutes, which may cause problems for the customer.

Selects the interval at which multi copy jobs are stopped.

Performs the TD sensor initial setting. This SP mode controls the voltage applied to the TD sensor to make the TD sensor output about 2.5 V. After finishing this, the TD

sensor output voltage is disp layed.

Use this mode only after changing the TD sensor or the developer.

Function Settings

to clean the cleaning blade edge toner density control.

10 ~ 200 1 µA/step [A294 I & II]

120 µµµµA

[A295 I & II]

140 µµµµA

10 ~ 200 1 µA/step

140 µµµµA

10 ~ 200 1 µA/step [A294 I & II]

120 µµµµA

[A295 I & II]

140 µµµµA

10 ~ 200 1 µA/step [A294 I & II]

120 µµµµA

[A295 I & II]

140 µµµµA

10 ~ 200 1 µA/step

20 µµµµA

1: No

2: Yes

1 ~ 100 1 minute/step

30 minutes

Start

Tables

Service

4-19

Page 30

SERVICE PROGRAM MODE 18 July, 2001

2-803

2-804

2-813

2-902

2-909

Mode No.

(Class 1, 2 and 3)

Corona Wire Cleaner On

Turns on the corona wire cleaner manually.

When copy density across the paper is uneven at EM, clean the wire with this mode.

Charge Corona Cleaner Setting

1 Corona Wire

Cleaner Operation Setting

2 Operation

Interval B

Printer Gamma Setting

Printing Test Pattern

2IPU Test

Pattern Selection (for Scanner)

3 Printing Test

Pattern

4 Outer I/F Block

Test Pattern

Frequency

Pattern Density

Vcont Manual Setting2-906

Main Scan Magnification

1 Copier

Selects when automatic corona wire cleaning is done. 0: Corona wire cleaning is not done. 1: When process control initial setting is

2: At the period set in SP2-804-2. Selects the interval for automatic corona

wire cleaning.

Select if printer gamma correction is applied or not.

This SP mode is for designer use only.

Prints the test patterns for the IPU chip. See section 4.2.3. for how to print test patterns.

This SP mode is useful for finding whether the SICU or the SBU is defective. If the printout is not OK, the SICU is defective.

Prints the printer test patterns. See section 4.2.3. for how to print test patterns. Example: 15. Trimming Area

This SP mode is useful for finding whether the LDDR or the SICU is defective. If the printout is not OK, the LDDR is defective.

Prints the test patterns for the IPU chip. See section 4.2.3. for how to print test patterns.

This SP mode is useful for finding whether the SICU or the printer application is defective. If the printout is not OK, the SICU is defective.

Designer use only.

B Factory use only.

Adjusts the magnification in the main scan direction for copy mode.

Use the “

See “Replacement and Adjustment – Copy Image Adjustments” for details.

Function Settings

done, if the copy number after the last cleaning operation is over the number set in SP2-804-2.

•

” key to toggle between + and –.

Start

[A294/A295 I] 0: Not done

1: Done

2:Periodically [A294/A295 II] 0: Not done 1: Done

2:Periodically

100 ~ 10,000 100 print/step

5,000

0: Applied

1: Not applied

9.7 V

–2.0 ~ +2.0

0.1%/step

+0.0%

4-20

Page 31

18 July, 2001 SERVICE PROGRAM MODE

2-909

2-910

2-911

2-913

2-920

2-940

Mode No.

(Class 1, 2 and 3)

Main Scan Magnification

2 Printer

Writing Sub Scan Magnification

Transfer Current On/Off Timing

1 La (ON)

2 Lb (On/Off

exchange timing)

3 Lc (OFF)

Drum Reverse Rotation Interval2-912

Test Pattern ID Adjustment

LD Off Check

Transfer Pre-cleaning2-930

Leading Edge Transfer Current Adjustment

1Tray-1 2Tray-2 3Tray-3 4 Tray-4 (LCT) 5 Tray-5 (LCT) 6 Tray-6 (LCT) 7 Duplex Tray

Adjusts the magnification in the main scan direction when printing from a personal computer.

Use the “ See “Replacement and Adjustment – Copy Image Adjustments” for details.

Adjusts the magnification in the sub scan direction.

Use the “ See "Replacement and Adjust m ent – Copy Image Adjustments" for details.

Adjusts the transfer current on timing at the

leading edge. Adjusts the transfer current on/off

exchange timing.

(A294/A295 II models only)

Adjusts the transfer current off timing

(for example: –5 mm is 5 mm after the trailing edge).

This SP mode is for designer use only. Do not change the value.

Adjusts the image density for printing test patterns (with SP2-902). Usually this SP mode is only used by designers.

The value is cleared when the main power switch is turned off and on.

Checks whether the LD turns off or on when the front door is opened. 0: On 1: Off

Factory use only.

Designer use only

Adjusts the leading edge transfer current for each paper feed station. (A294/A295 II models only)

•

” key to toggle between + and –.

•

” key to toggle between + and –.

Function Settings

–2.0 ~ +2.0

0.1%/step

+0.0%

–1.0 ~ +1.0

0.1%/step

+0.0%

–30 ~ +30 1 mm/step

0 mm

[A294/A295 II] 0 ~ +60

1 mm/step

+45 mm

–30 ~ +30 1 mm/step

0 mm

0 ~ 10 1/step

0 ~ 15 1/step

0: ON

1: OFF

10 ~ 200 1 µA/step [A294 II]

120 µµµµA

[A295 II]

140 µµµµA

Tables

Service

4-21

Page 32

SERVICE PROGRAM MODE 18 July, 2001

2-941

2-962

Mode No.

(Class 1, 2 and 3)

Transfer Current for Semi-thick Paper

Determines that the transfer current for semi-thick paper is handled as Plain paper or Thick paper

• Setting this mode to “Thick paper” is effective when image at the leading edge is not good.

• To use this mode, “Recycled paper”

should be selected in the User Tools for semi-thick paper.

• Selecting “Thick paper” in the User Tools is the same effect as this mode. But selecting “Thick paper” in the User Tools does not allow the duplex or punch mode.

Developer Initialization (Factory)2-961

Factory use only.

Auto Process Control

Automatically adjusts the following process control factors.

1. Drum potential sensor

2. ID sensor

3. Charge grid voltage (by changing V

4. LD power (by changing V

Before using this SP, auto process control should be on (SP3-901).

After changing the drum, ID sensor, drum potential sensor, LD unit, charge corona wires, or toner density sensor, this SP should be used.

Periodical Auto Process Control2-966

Selects whether auto process control is done after the first job since 24 hours is finished. This setting is required for a

customer who keeps the main switch on all day.

Function Settings

0: Plain paper

1: Thick paper

Start

)

OFF

2-967

Auto Image Density Adjustment

Selects whether auto image de nsity adjustment is done during machine warm up. This mode is to counter dirty background that occurs when a machine is used in an area that contains ammonia.

If Periodical Auto Process Control (SP2-

966) is used, this adjustment is done also

after the auto process control is finished.

OFF

4-22

Page 33

18 July, 2001 SERVICE PROGRAM MODE

2-971

2-972

2-973

Mode No.

(Class 1, 2 and 3)

Function Settings

Toner Density Correction2-968

To prevent the image density dropping during continuous copying after a long interval (this is caused by a sudden increase of Q/M), V

0.06 V every (100 X (SP2-974 value + 1))

REF

is changed by –

0 ~ 20 k 1 k prints/step

prints. This correction is applied from when the auto process control is done, until “(the number of prints set in this SP mode) X (SP2-974 value +1)” has been made.

ID Sensor Pattern Interval – Multicopy2-969

Twenty ID patterns are made in a 1-minute interval during a continuous copy process just after the process control is completed.

OFF

Image density will be stabilized. However, the printing productivity will be decreased.

Toner Suction System2-970

Displays whether the toner suction system is installed in order to distinguish between A294/A295 I and A294/A295 II.

[A294/A295 I] 0: Not installed [A294/A295 II] 1: Installed

Collected Toner Level Check

Check this mode when “Waste toner full” pop-up message comes up or “Near full” message is displayed.

1 Left Toner

Collection Bottle

2 Toner

Collection Bottle

3 Toner Suction

Motor

Display whether the used toner collection bottle is full or not.

Display whether the sucked toner collection bottle is full or not. (A294/A295 II models only)

Displays whether the toner suction motor needs to be replaced or not. (A294/A295 II models only)

0: Not full 2: Full 0: Not full 1: Near full 2: Full 0: Not needed 1: Needed

soon

2: Needed

Sucked Toner Collection Bottle Operation Time

Displays the total operation time of the

XXX hours toner suction motor to maintain the sucked toner collection bottle replacement.

Near full: 280 hours, Full: 300 hours

Reset the value to 0 (zero) by pressing 0 and # (Enter) keys when the bottle is replaced.

Toner Suction Motor Operation Time

Displays the total operation time of the

XXX hours toner suction motor to maintain the toner suction motor replacement. <Preset Values> Near full: 570 hours, Full: 600 hours

Reset the value to 0 (zero) by pressing 0 and # (Enter) keys when the bottle is replaced.

Tables

Service

4-23

Page 34

SERVICE PROGRAM MODE 18 July, 2001

2-974

3-001

3-103

3-902

Mode No.

(Class 1, 2 and 3)

Toner Supply Interval

ID Sensor Initial Setting

1 ID Sensor PWM

Setting

ID Sensor Initial Setting

2 Initialization

B This SP mode should be performed after:

ID Sensor Output Display

1V 2VSG Initial

(Designer Use)

Initial

(Designer Use)

Auto Process Control Setting3-901

Process Control Data Display3-902

1 Auto Process

Control

(O: OFF, 1: ON)

Process Control Data Display

2V 3 Half Tone V

B Displays the drum potential.

Function Settings

Adjusts the interval of toner supply. (Once every how many prints)

• The operation of SP2-968 has been

changed.

• The V

update interval has been

REF

changed from “every 100 prints” to “every (100 X (SP2-974 value + 1)) prints”.

This SP mode is added to recover the machine when an SC condition occurs because ID Sensor Initial Setting is not done after doing an NVRAM Clear or replacing the NVRAM. Reset this SP to the factory setting in this case.

The PWM data is stored when ID Sensor Initial Setting is done.

Performs the ID sensor initial setting. The ID sensor output for the bare drum (V

) is

adjusted to 4.0 ± 0.2 V.

1. Replacing or cleaning the ID sensor

2. Replacing the NVRAM or doing an

NVRAM clear.

Displays the current VSG and VSP output.

If the ID sensor does not detect the ID pattern, “V

= 5.0 V/VSG = 5.0 V” is

displayed and an SC code is generated. If the ID sensor does not detect the bare area of the drum, “V

SP = 0.0 V/VSG = 0.0 V”

is displayed and an SC code is generated.

Decides whether or not the machine checks and corrects the drum potential (V

) and LD power when the fusing temperature is lower than 100°C at powerup.

Displays whether auto process control is on or off.

Displays the drum potential in areas illuminated by the laser during LD power adjustment (auto process control).

Displays the charge grid voltage which

resulted from the latest V

adjustment.

0: 1/1 (every

print)

1: 1/2 (every 2

prints)

2: 1/3 (every 3

prints)

3: 1/4 (every 4

prints)

0 ~ 255 1/step

Start

OFF

4-24

Page 35

18 July, 2001 SERVICE PROGRAM MODE

3-902

3-903

4-008

4-010

4-011

Mode No.

(Class 1, 2 and 3)

Process Control Data Display

LD Power

(Correction)

Displays the LD power correction value which resulted from the latest V

adjustment.

6VID

7VM200

Displays the latest drum surface voltage measured on the ID sensor pattern.

Displays the drum potential sensor output when 200 V is applied during potential

sensor correction.

8VM700

Displays the drum potential sensor output when 700 V is applied during potential

sensor correction.

Correction

Displays whether the V performed. The target value of the V

correction is “SP2-001-7 value + 50”. (A294/A295 II models only)

VD Correction Counter

Adjusts the starting point for the V Correction. Displays whether the V performed. The target value of the V correction is “SP2-001-7 value + 50”.

(A294/A295 II models only)

The counter to control the V automatically reset to 0 (zero) when SP2-801 is performed.

Scanner Sub Scan Magnif icati on

Adjusts the magnification in the sub scan direction for scanning. If this value is changed, the scanner motor speed is changed.

Use the “ See “Replacement and Adjustment – Copy Image Adjustments” for details.

Scanner Side-to-Side Registration

Adjusts the leading edge registration for scanning.

(–): The image moves in the direction of the

Use the “ See “Replacement and Adjustment – Copy Image Adjustments" for details.

Scanner Side-to-Side Registration

Adjusts the side-to-side registration for scanning.

(–): The image disappears at the left side. (+): The image appears at the left side.

Use the “ See “Replacement and Adjustment – Copy Image Adjustments” for details.

Function Settings

correction is being

•

” key to toggle between + and –.

leading edge

•

” key to toggle between + and –.

•

” key to toggle between + and –.

correction is

0: Not

performed

1: Performed

0 ~ 999 1 k prints/step

100 k prints

–0.9 ~ +0.9

0.1 %/step

+0.0 %

–9.0 ~ +9.0

0.1 mm/step

+0.0 mm

–6.0 ~ +6.0

0.1 mm/step

+0.0 mm

Tables

Service

4-25

Page 36

SERVICE PROGRAM MODE 18 July, 2001

4-012

4-015

4-303

4-428

Mode No.

(Class 1, 2 and 3)

Scanner Erase Margin

1 Leading Edge

Adjusts the leading edge erase margin for scanning.

Do not adjust this unless the user wishes to have a scanner margin that is greater than the printer margin.

2 Trailing Edge

Adjusts the trailing edge erase margin for scanning.

See the comment for SP4-012-1.

3Right

Adjusts the right side erase margin for scanning.

See the comment for SP4-012-1.

4 Left

Adjusts the left side erase margin for scanning.

See the comment for SP4-012-1.

Scanner Free Run4-013

Performs a scanner free run with the exposure lamp on.

Scanner Speed Adjustment

Displays the value of the scanner speed fine adjustment. This setting can be changed using the number keys.

The scanner speed fine adjustment is automatically done when the main switch is turned on, and the current setting is overwritten.

APS Sensor Output Display4-301

Displays the APS sensor output signals when an original is placed on the exposure glass

APS A5/HLT Size Original Detection

Selects whether or not the copier determines that the original is A5/HLT size when the APS sensor does not detect the size.

If “A5 length/5 sizes that cannot be detected by the APS sensors are regarded as A5 lengthwise or

" x 8

1/2

If “Not detected” is selected, “Cannot detect original size” will be displayed.

Scanner Adjustment

1 Flag Display 2 Standard

Displays whether or not the standard white

level adjustment has been done. Corrects the standard white level from the

white plate.

This SP mode is for factory use only. Do not use this SP mode.

Function Settings

1/2" x 81/2"” is selected, paper

1/2

0.0 ~ 0.9

0.1 mm/step

0.5 mm

0.0 ~ 0.9

0.1 mm/step

0.5 mm

0.0 ~ 0.9

0.1 mm/step

0.5 mm

0.0 ~ 0.9

0.1 mm/step

0.5 mm

0: Stop

1: Start

–20 ~ +20 1/step

0: Not

detected

1: A5 length/

1/2

" x 8

1/2

2: Not

detected

3: A5 length/

1/2

" x 8

1/2

(Setting 2 or 3 is required if 267 x 390 and 267 x 195 paper is used.)

Adjusted

Not adjusted

Start

4-26

Page 37

18 July, 2001 SERVICE PROGRAM MODE

4-902

Mode No.

(Class 1, 2 and 3)

SBU Setting

Image data Path Setting

E/O

Adjustment First Side

4E/O

Adjustment Last Side

7 Black Level -

First Side

8 Black Level -

Last Side

15 Range

Adjustment First Side

16 Gain Range

Adjustment Last Side

Gain

Adjustment First Side E-ch

Gain

Adjustment First Side O-ch

Gain

Adjustment Last Side E-ch

Function Settings

Changes the image data path in the SBU.1

This SP mode is for factory use only. Do not use this SP mode.

Displays the ASIC ID of the SBU.2 ASIC ID Display

This SP mode is for factory use only.

Checks the difference value of the black level for the first side after adjusting the black level at power-up.

This SP mode is for designer use only. Do not use this SP mode.

Checks the difference value of the black level for the last side after adjusting the black level at power-up.

This SP mode is for designer use only. Do not use this SP mode.

Checks the value of the black level for the first side after adjusting the black level at power-up.

This SP mode is for designer use only. Do not use this SP mode.

Checks the value of the black level for the last side after adjusting the black level at power-up.

This SP mode is for designer use only. Do not use this SP mode.

Checks the AGC gain range of the white level for the first side after adjusting the white level at power-up.

This SP mode is for designer use only. Do not use this SP mode.

Checks the AGC gain value of the white level for the last side after adjusting the white level at power-up.

This SP mode is for designer use only. Do not use this SP mode.

Checks the AGC gain value of the white level for the EVEN channel of the first side after adjusting the white level at power-up.

This SP mode is for designer use only. Do not use this SP mode.

Checks the AGC gain value of the white level for the ODD channel of the first side after adjusting the white level at power-up.

This SP mode is for designer use only. Do not use this SP mode.

Checks the AGC gain value of the white level for the EVEN channel of the last side after adjusting the white level at power-up.

This SP mode is for designer use only.

Do not use this SP mode.

0 ~5 1/step

0 ~ 255 1/step

128

0 ~ 255 1/step

128

0 ~ 255 1/step

170

0 ~ 255 1/step

170

0 ~ 255 1/step

Tables

Service

4-27

Page 38

SERVICE PROGRAM MODE 18 July, 2001

4-902

Mode No.

(Class 1, 2 and 3)

SBU Setting

Gain

Adjustment Last Side O-ch

25 Reference

Voltage Adjustment

E/O

Adjustment First Side (Memory)

32 E/O

Adjustment Last Side (Memory)

35 Black Level -

First Side (Memory)

Black Level -

Last Side (Memory)

43 Range

Adjustment First Side (Memory)

44 Range

Adjustment Last Side (Memory)

Gain

Adjustment F/E ch (Memory)

Gain

Adjustment F/O ch (Memory)

49 Gain

Adjustment L/E ch (Memory)

50 Gain

Adjustment L/O ch (Memory)

Function Settings

Checks the AGC gain value of the white level for the ODD channel of the last side after adjusting the white level at power-up.

This SP mode is for designer use only. Do not use this SP mode.

Checks the value of the standard white level after adjusting the white level.

This SP mode is for factory use only. Do not use this SP mode.

Checks the difference value of the black level for the First side after adjusting the

black level at power-up.

This SP mode is for designer use only.

Checks the difference value of the black level for the last side after adjusting the

black level at power-up.

This SP mode is for designer use only.

Checks the value of the black level for the first side after adjusting the black level at

power-up.

This SP mode is for designer use only.

Checks the value of the black level for the last side after adjusting the black level at

power-up.

This SP mode is for designer use only.

Checks the AGC gain value of the white level for the EVEN channel of the first side

after adjusting the white level at power-up.

This SP mode is for designer use only.

Checks the AGC gain value of the white level for the ODD channel of the first side

after adjusting the white level at power-up.

This SP mode is for designer use only.

Checks the AGC gain value of the white level for the EVEN channel of the last side

after adjusting the white level at power-up.

This SP mode is for designer use only.

Checks the AGC gain value of the white level for the ODD channel of the last side

after adjusting the white level at power-up.

This SP mode is for designer use only.

Checks the AGC gain value of the white level for the EVEN channel of the last side

after adjusting the white level at power-up.

This SP mode is for designer use only.

Checks the AGC gain value of the white level for the ODD channel of the last side after adjusting the white level at power-up.

This SP mode is for designer use only.

0 ~ 255 1/step

117

0 ~255 1/step

128

0 ~255 1/step

128

0 ~ 255 1/step

170

0 ~ 255 1/step

170

0 ~ 255 1/step

4-28

Page 39

18 July, 2001 SERVICE PROGRAM MODE

4-902

Mode No.

(Class 1, 2 and 3)

SBU Setting

Reference

Voltage Adjustment (Memory)

59 Standard White

Level

61 Range F

(Factory Setting)

62 Gain

Adjustment First Side O ch (Factory Setting)

65 Range L

(Factory Setting)

66 Gain F-O ch

(Factory Setting)

67 Gain L/F ch

(Factory Setting)

Gain L-O ch

(Factory Setting)

71 Reference

Voltage (Factory Setting)

75 Overflow Flag

76 Time Out Flag

SBU Reset

Error Flag

79 Error Flag

E/O Adjustment

Error Count

Function Settings

Checks the value of the standard white level after adjusting the white level.

This SP mode is for factory use only.

Checks either the maximum or minimum white shading data.

This SP mode is for designer use only.

Checks the AGC gain value of the white level for the EVEN channel of the first side

after adjusting the white level at power-up.

This SP mode is for designer use only.

Checks the AGC gain value of the white level for the ODD channel of the first side after adjusting the white level at power-up.

This SP mode is for designer use only.

Checks the AGC gain value of the white level for the EVEN channel of the last side

after adjusting the white level at power-up.

This SP mode is for designer use only.

Checks the AGC gain value of the white level for the ODD channel of the last side

after adjusting the white level at power-up.

This SP mode is for designer use only.

Checks the AGC gain value of the white level for the EVEN channel of the last side

after adjusting the white level at power-up.

This SP mode is for designer use only.

Checks the AGC gain value of the white level for the ODD channel of the last side

after adjusting the white level at power-up.

This SP mode is for designer use only.

Checks the value of the standard white level after adjusting the white level.

This SP mode is for factory use only.

Checks the overflow flag data during the automatic scanner adjustment.

This SP mode is for designer use only.

Checks the time out flag data during the automatic scanner adjustment.

This SP mode is for designer use only.

Checks the error flag data during the automatic scanner adjustment.

This SP mode is for designer use only.

Checks the error flag data during the automatic scanner adjustment.

This SP mode is for designer use only.

Counts the errors during the automatic scanner adjustment.

This SP mode is for designer use only.

0 ~ 255 1/step

117

0: Maximum 1: Minimum

0 ~ 255 1/step

117

0 ~ 1023 1/step

0 ~ 15 1/step

0 ~ 255 1/step

Tables

Service

4-29

Page 40

SERVICE PROGRAM MODE 18 July, 2001

4-902

4-903

Mode No.

(Class 1, 2 and 3)

SBU Setting

Black

Adjustment Error Count

82 Gain F/L

Difference Error Count

Black Reading

Error Count

84 White Reading

Error Count

Retry Error

Fault Count

86 Retry Error

Success Count

87 White Reading

Value - F/E ch

88 White Reading

Value - F/O ch

89 White Reading

Value - L/E ch

90 White Reading

Value - L/O ch

91 BIPU IO S This SP mode is for designer use only.

Filter Setting

5 Full Size Mode

Image Shift in

Magnification

9 Filter Type

Selection Photo Mode

Counts the errors during the automatic scanner adjustment.

This SP mode is for designer use only.

Counts the errors during the automatic scanner adjustment.

This SP mode is for designer use only.

Counts the errors during the automatic scanner adjustment.

This SP mode is for designer use only.

Counts the errors during the automatic scanner adjustment.

This SP mode is for designer use only.

Counts the errors during the automatic scanner adjustment.

This SP mode is for designer use only.

Counts the errors during the automatic scanner adjustment.

This SP mode is for designer use only.

Displays the white peak level when the main switch is turned on.

This SP mode is for designer use only.

Displays the white peak level when the main switch is turned on.

This SP mode is for designer use only.

Displays the white peak level when the main switch is turned on.

This SP mode is for designer use only.

Displays the white peak level when the main switch is turned on.

This SP mode is for designer use only.

Selects whether the copy is always in full size mode even if the magnification ratio has been changed.

Set to 1 when checking the magnification in the main scan direction. If the magnification is not 100%, something is wrong with the image processing circuits.

Adjusts the pixel shift amount in the main scan direction in magnification mode.

This SP mode is for designer use only.

Selects the filter type for Photo mode.

Coefficients used: 0: SP4-903-36 1: SP4-903-37 If “0” is selected, the image will be sharper. However, dot screen areas will be faint.

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Function Settings

0 ~ 255 1/step

0: Normal

operation

1: Always full

size mode

0 ~ 8191 1/step

0: MTF

1: Smoothing

4-30

Page 41

18 July, 2001 SERVICE PROGRAM MODE

4-903

Mode No.

(Class 1, 2 and 3)

Filter Setting

Pre-filter Type

(Text mode 25% ~ 49%)

Pre-filter Type

(Text mode 50% ~ 154%)

Pre-filter Type

(Photo mode) Pre-filter Type

(Text/Photo mode 25% ~ 49%)

14 Pre-filter Type

(Text/Photo mode 50% ~ 154%)

15 Pre-filter Type

(Pale mode) S

16 Pre-filter Type

(Generation mode)

Function Settings

Selects the pre-filter type.

0: None 1: Smoothing (Normal)

2: Smoothing (Weak) 3 ~ 5: Special smoothing filters which

reduce moiré but do not weaken the edges of low contrast text. A suitable filter should be selected depending

on the original type. 6: MTF (Weak) 7: MTF (Normal) 8 ~ 10: Special smoothing filters only for

the main scan direction. These filters should be used if the edges of lines that are parallel to the sub scan line are weakened when a filter from 3 ~ 5 is selected. A suitable filter should be selected depending on the original type .

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

0 ~ 10 1/step

Tables

Service

20 Filter Level -

Text (25% ~ 49%) Main Scan Direction

Filter Level -

Text (25% ~ 49%) Sub Scan Direction

22 Filter Strength -

Text (25% ~ 49%) Main Scan Direction

23 Filter Strength -

Text (25% ~ 49%) Sub Scan Direction

Selects the MTF filter coefficient in the main scan direction for 25% ~ 49% reduction for text mode. Settings 0 to 6 are MTF filters, and settings 7 to 13 are moiré

erase filters. 0: Weak 6: Strong 7: Weak 13: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF filter coefficient in the sub scan direction for 25% ~ 49% reduction for text mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF strength in the main scan direction for 25% ~ 49% reduction for text mode.

0: Weak 6:Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF strength in the sub scan direction for 25% ~ 49% magnification for text mode. 0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

0 ~ 13 1/step

0 ~ 6 1/step

4-31

Page 42

SERVICE PROGRAM MODE 18 July, 2001

4-903

Mode No.

(Class 1, 2 and 3)

Filter Setting

Filter Level -

Text (50% ~ 154%) Main Scan Direction

25 Filter Level -

Text (50% ~ 154%) Sub Scan Direction

26 Filter Strength -

Text (50% ~ 154%) Main Scan Direction

27 Filter Strength -

Text (50% ~ 154%) Sub Scan Direction

Function Settings

Selects the MTF filter coefficient in the main scan direction for 50% ~ 154% reduction for text mode. Settings 0 to 6 are MTF filters, and settings 7 to 13 are moiré

erase filters. 0: Weak 6: Strong 7: Weak 13: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF filter coefficient in the sub scan direction for 50% ~ 154% reduction for text mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF strength in the main scan direction for 50% ~ 154% reduction for text mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF strength in the sub scan direction for 50% ~ 154% magnification for text mode. 0: Weak 6: Strong.

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

0 ~ 13 1/step

0 ~ 6 1/step

28 Filter Level -

Text (155% ~ 256%) Main Scan Direction

29 Filter Level -

Text (155% ~ 256%) Sub Scan Direction

30 Filter Strength -

Text (155% ~ 256%) Main Scan Direction

Selects the MTF filter coefficient in the main scan direction for 155% ~ 256% reduction for text mode. Settings 0 to 6 are MTF filters, and settings 7 to 13 are moiré erase filters.

0: Weak 6: Strong 7: Weak 13: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF filter coefficient in the sub scan direction for 155% ~ 256% reduction for text mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF strength in the main scan direction for 155% ~ 256% reduction for text mode. 0: Weak 6: Strong

This SP is ignored unless the user selects

‘Service Mode’ in UP mode.

0 ~ 13 1/step

0 ~ 6 1/step

4-32

Page 43

18 July, 2001 SERVICE PROGRAM MODE

4-903

Mode No.

(Class 1, 2 and 3)

Filter Setting

Filter Strength -

Text (155% ~ 256%) Sub Scan Direction

Filter Level -

Text (257% ~ 400%) Main Scan Direction

33 Filter Level -

Text (257% ~ 400%) Sub Scan Direction

34 Filter Strength -

Text (257% ~ 400%) Main Scan Direction

35 Filter Strength -

Text (257% ~ 400%) Sub Scan Direction

36 MTF Filter in

Photo Mode

Function Settings

Selects the MTF strength in the sub scan direction for 155% ~ 256% magnification for text mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF filter coefficient in the main scan direction for 256% ~ 400% reduction for text mode. Settings 0 to 6 are MTF filters, and settings 7 to 13 are moiré

erase filters. 0: Weak 6: Strong 7: Weak 13: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF filter coefficient in the sub scan direction for 257% ~ 400% reduction for text mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF strength in the main scan direction for 257% ~ 400% reduction for text mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF strength in the sub scan direction for 257% ~ 400% magnification for text mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF filter coefficient for photo mode, if MTF is enabled for this mode with SP4-903-9. Settings 0 to 6 are MTF filters, and settings 7 to 13 are moiré erase filters.

0: Weak 6: Strong 7: Weak 13: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

0 ~ 6 1/step

0 ~ 13 1/step

0 ~ 6 1/step

0 ~ 13 1/step

Tables

Service

37 Smoothing

Filter in Photo mode

38 Filter Strength

in Photo mode

Selects the smoothing filter coefficient for photo mode, if smoothing is enabled for this mode with SP4-903-9.

0: Weak 4: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the smoothing filter coefficient for photo mode, if MTF is enabled for this mode with SP4-903-9. 0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

4-33

0 ~ 4 1/step

0 ~ 6 1/step

Page 44

SERVICE PROGRAM MODE 18 July, 2001

4-903

Mode No.

(Class 1, 2 and 3)

Filter Setting

Filter Level -

Text/Photo (25% ~ 49%) Main Scan Direction

40 Filter Level -

Text/Photo (25% ~ 49%) Sub Scan Direction

41 Filter Strength -

Text/Photo (25% ~ 49%) Main Scan Direction

42 Filter Strength -

Text/Photo (25% ~ 49%) Sub Scan Direction

43 Filter Level -

Text/Photo (50% ~ 154%) Main Scan Direction

44 Filter Level -

Text/Photo (50% ~ 154%) Sub Scan Direction

45 Filter Strength -

Text/Photo (50% ~ 154%) Main Scan Direction

Function Settings

Selects the MTF filter coefficient in the main scan direction for 25% ~ 49% magnification for text areas in text/photo mode. Settings 0 to 6 are MTF filters, and settings

7 to 13 are moiré erase filters. 0: Weak 6: Strong 7: Weak 13: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF filter coefficient in the sub scan direction for 25% ~ 49% magnification for text areas in text/photo mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF strength in the main scan direction for 25% ~ 49% magnification for text areas in text/photo mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF strength in the sub scan direction for 25% ~ 49% magnification for text areas in text/photo mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF filter coefficient in the main scan direction for 50% ~ 154% magnification for text areas in text/photo mode. Settings 0 to 6 are MTF filters, and settings

7 to 13 are moiré erase filters. 0: Weak 6: Strong 7: Weak 13: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF filter coefficient in the sub scan direction for 50% ~ 154% magnification for text areas in text/photo mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF strength in the main scan direction for 50% ~ 154% magnification for text areas in text/photo mode. 0: Weak 6: Strong

This SP is ignored unless the user selects

‘Service Mode’ in UP mode.

0 ~ 13 1/step

0 ~ 6 1/step

0 ~ 13 1/step

0 ~ 6 1/step

4-34

Page 45

18 July, 2001 SERVICE PROGRAM MODE

4-903

Mode No.

(Class 1, 2 and 3)

Filter Setting

Filter Strength -

Text/Photo (50% ~ 154%) Sub Scan Direction

Filter Level -

Text/Photo (155% ~ 256%) Main Scan Direction

48 Filter Level -

Text/Photo (155% ~ 256%) Sub Scan Direction

Filter Strength -

Text/Photo (155% ~ 256%) Main Scan Direction

Filter Strength -

Text/Photo (155% ~ 256%) Sub Scan Direction

Filter Level -

Text/Photo (257% ~ 400%) Main Scan Direction

52 Filter Level -

Text/Photo (257% ~ 400%) Sub Scan Direction

Function Settings

Selects the MTF strength in the sub scan direction for 50% ~ 154% magnification for text areas in text/photo mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF filter coefficient in the main scan direction for 155% ~ 256% magnification for text areas in text/photo mode. Settings 0 to 6 are MTF filters, and settings

7 to 13 are moiré erase filters. 0: Weak 6: Strong 7: Weak 13: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF filter coefficient in the sub scan direction for 155% ~ 256% magnification for text areas in text/photo mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF strength in the main scan direction for 155% ~ 256% magnification for text areas in text/photo mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF strength in the sub scan direction for 155% ~ 256% magnification for text areas in text/photo mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF filter coefficient in the main scan direction for 257% ~ 400% magnification for text areas in text/photo mode. Settings 0 to 6 are MTF filters, and settings

7 to 13 are moiré erase filters. 0: Weak 6: Strong 7: Weak 13: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF filter coefficient in the sub scan direction for 257% ~ 400% magnification for text areas in text/photo mode. 0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

0 ~ 6 1/step

0 ~ 13 1/step

0 ~ 6 1/step

0 ~ 13 1/step

0 ~ 6 1/step

Tables

Service

4-35

Page 46

SERVICE PROGRAM MODE 18 July, 2001

4-903

Mode No.

(Class 1, 2 and 3)

Filter Setting

Filter Strength -

Text/Photo (257% ~ 400%) Main Scan Direction

Filter Strength -

Text/Photo (257% ~ 400%) Sub Scan Direction

Filter Level in

Pale Mode

56 Filter Strength

in Pale Mode

57 Filter Level in

Generation Mode

58 Filter Strength

in Generation Mode

Function Settings

Selects the MTF strength in the main scan direction for 257% ~ 400% magnification for text areas in text/photo mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the MTF strength in the sub scan direction for 257% ~ 400% magnification for text areas in text/photo mode.

0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the table of the MTF filter coefficient for pale original mode Settings 0 to 6 are MTF filters, and settings 7 to 13 are moiré erase filters.

0: Weak 6: Strong 7: Weak 13: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the table of the MTF filter strength for pale original mode. 0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the table of the MTF filter coefficient for pale original mode. Settings 0 to 6 are MTF filters, and settings 7 to 13 are moiré erase filters.

0: Weak 6: Strong 7: Weak 13: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the table of the MTF filter strength for generation original mode. 0: Weak 6: Strong

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

0 ~ 6 1/step

0 ~ 13 1/step

0 ~ 6 1/step

0 ~ 13 1/step

0 ~ 6 1/step

60 Independent

Dot Erase Text Mode

62 Independent

Dot Erase Text/Photo Mode

Selects the independent dot eras e le vel for text mode.

A larger number erases more dots. 0

means disabled. Refer to “Detailed Section Description – Independent Dot Erase” for details.

Selects the independent dot eras e le vel for text/photo mode.

A larger number erases more dots. 0 means disabled. Refer to “Detailed Sectional Description – Independent Dot

Erase” for details.

4-36

0 ~ 14 1/step

Page 47

18 July, 2001 SERVICE PROGRAM MODE

4-903

Mode No.

(Class 1, 2 and 3)

Filter Setting

Independent

Dot Erase Pale Mode

Independent

Dot Erase Generation Copy Mode

Scanner

Gamma Thresh Level - Text

Scanner

Gamma Thresh Level - Photo

Scanner

Gamma Thresh Level Text/Photo

Scanner

Gamma Thresh Level - Pale

Function Settings

Selects the independent dot eras e le vel for pale mode.

A larger number erases more dots. 0

means disabled. Refer to “Detailed Section Description – Independent Dot Erase” for details.

Selects the independent dot eras e le vel for generation copy mode.

A larger number erases more dots. 0

means disabled. Refer to “Detailed Sectional Description – Independent Dot Erase” for details.

Adjust the threshold level for the background erase function in letter mode.

A larger value reduces dirty background. This SP is ignored unless 1 or 2 is selected with SP4-903-70.

Adjust the threshold level for the background erase function in photo mode.

A larger value reduces dirty background. This SP is ignored unless 1 or 2 is selected with SP4-903-71.

Adjust the threshold level for the background erase function in text/photo mode.

A larger value reduces dirty background. This SP is ignored unless 1 or 2 is selected with SP4-903-72.

Adjust the threshold level for the background erase function in pale mode.

A larger value reduces dirty background.

This SP is ignored unless 1 or 2 is selected with SP4-903-73.

0 ~ 14 1/step

0 ~ 255 1/step

Tables

Service

69 Scanner

Gamma Thresh Level Generation

70 Background

Erase Mode Text

Adjust the threshold level for background erase in generation copy mode.

A larger value reduces dirty background. This SP is ignored unless 1 or 2 is selected with SP4-903-74.

Selects the background erase func tio n setting in text mode. 0: Not done 1: Weak background erase (the MTF filter

is not used if the pixel is below the threshold selected with SP4-9 03- 6 5.)

2: Strong background erase (the pixel is

changed to 0 if it is below the threshold level selected with SP4-90 3-65.)

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

4-37

0 ~ 255 1/step

0 ~ 2 1/step

Page 48

SERVICE PROGRAM MODE 18 July, 2001

4-903

Mode No.

(Class 1, 2 and 3)

Filter Setting

Background

Erase Mode Photo

72 Background

Erase Mode Text/Photo

73 Background

Erase Mode Pale

74 Background

Erase Mode Generation

Function Settings

Selects the background erase func tio n setting in photo mode.

0: Not done 1: Strong background erase (the pixel is

changed to 0 if it is below the threshold level selected with SP4-90 3-66.)

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the background erase func tio n setting in text/photo mode. 0: Not done 1: Weak background erase (the MTF filter

is not used if the pixel is below the threshold selected with SP4-9 03- 6 7.)

2: Strong background erase (the pixel is

changed to 0 if it is below the threshold level selected with SP4-90 3-67.)

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the background erase func tio n setting in pale mode. 0: Not done 1: Weak background erase (the MTF filter

is not used if the pixel is below the threshold selected with SP4-9 03- 6 8.)

2: Strong background erase (the pixel is

changed to 0 if it is below the threshold level selected with SP4-90 3-68.)

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Selects the background erase func tio n setting in generation mode. 0: Not done 1: Weak background erase (the MTF filter

is not used if the pixel is below the threshold selected with SP4-9 03- 6 9.

2: Strong background erase (the pixel is

changed to 0 if it is below the threshold level selected with SP4-90 3-69.

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

0 ~ 1 1/step

0 ~ 2 1/step

4-38

Page 49

18 July, 2001 SERVICE PROGRAM MODE

4-903

Mode No.

(Class 1, 2 and 3)

Filter Setting

Line Thickness

Correction Setting in Generation Mode

Function Settings

Selects the line thickness setting in generation mode.

Main Scan

0: 1: 2: 3: 4: 5: 6: 7: 8:

9: 10: 11: 12: 13: 14: 15:

Line Thickness: Thicker > No Correction > Thinner 1 > Thinner 2

No Correction No Correction No Correction No Correction

Thinner 1 Thinner 1 Thinner 1 Thinner 1 Thinner 2 Thinner 2 Thinner 2 Thinner 2

Thicker Thicker Thicker Thicker

No Correction

Sub Scan

Thinner 1 Thinner 2

Thicker

Thinner 1 Thinner 2

Thicker

Thinner 1 Thinner 2

Thicker

Thinner 1 Thinner 2

Thicker

0 ~ 15 1/step

Tables

Service

76 Line Thickness

Correction Threshold - in Generation Main Scan Direction

Line Thickness

Correction Generation Mode - Sub Scan Direction

Refer ‘Line Width Correction’ in sec tio n 2.

Selects the threshold to determine if line thickness correction is applied for a pixel. If a higher number is selected, the

effectiveness of the line thickness correction selected with SP4-903-75 becomes stronger.

Selects the threshold to determine if line thickness correction is applied for a pixel. If a higher number is selected, the effectiveness of the line thickness correction selected with SP4-903-75 becomes stronger.

0 ~ 5 1/step

4-39

Page 50

SERVICE PROGRAM MODE 18 July, 2001

4-903

Mode No.

(Class 1, 2 and 3)

Filter Setting

Line Thickness

Correction Setting in Text Mode

Function Settings

Selects the line thickness setting in generation mode.

Main Scan

0: 1: 2: 3: 4: 5: 6: 7: 8:

9: 10: 11: 12: 13: 14: 15:

Line Thickness: Thicker > No Correction > Thinner 1 > Thinner 2

No Correction No Correction No Correction No Correction

Thinner 1 Thinner 1 Thinner 1 Thinner 1 Thinner 2 Thinner 2 Thinner 2 Thinner 2

Thicker Thicker Thicker Thicker

No Correction

0 ~ 15 1/step

Sub Scan

Thinner 1 Thinner 2

Thicker

Thinner 1 Thinner 2

Thicker

Thinner 1 Thinner 2

Thicker

Thinner 1 Thinner 2

Thicker

79 Line Thickness

Correction Threshold in Text Mode Main Scan Direction

Line Thickness

Correction Threshold in Text Mode Sub Scan Direction

Refer ‘Line Width Correction’ in sec tio n 2.

Selects the threshold to determine if line thickness correction is applied for a pixel. If a higher number is selected, the

effectiveness of the line thickness correction selected with SP4-903-78 becomes stronger.

0 ~ 5 1/step

4-40

Page 51

18 July, 2001 SERVICE PROGRAM MODE

4-903

Mode No.

(Class 1, 2 and 3)

Filter Setting

Line Thickness

Correction Setting in Text/Photo Mode

Function Settings

Selects the line thickness setting in generation mode.

Main Scan

0: 1: 2: 3: 4: 5: 6: 7: 8:

9: 10: 11: 12: 13: 14: 15:

Line Thickness: Thicker > No Correction > Thinner 1 > Thinner 2

No Correction No Correction No Correction No Correction

Thinner 1 Thinner 1 Thinner 1 Thinner 1 Thinner 2 Thinner 2 Thinner 2 Thinner 2

Thicker Thicker Thicker Thicker

No Correction

Sub Scan

Thinner 1 Thinner 2

Thicker

Thinner 1 Thinner 2

Thicker

Thinner 1 Thinner 2

Thicker

Thinner 1 Thinner 2

Thicker

0 ~ 15 1/step

Tables

Service

Line Thickness

Correction Threshold in Text/Photo Mode - Main Scan Direction

83 Line Thickness

Correction Threshold in Text/Photo Mode - Sub Scan Direction

Scanner

Gamma Setting in Text Mode

85 Scanner

Gamma Selection in Text/Photo Mode

Refer ‘Line Width Correction’ in sec tio n 2.

Selects the threshold to determine if line thickness correction is applied for a pixel. If higher number is selected, the

effectiveness of the line thickness correction selected with SP4-903-81 becomes stronger.

Selects the threshold to determine if line thickness correction is applied for a pixel. If higher number is selected, the

effectiveness of the line thickness correction selected with SP4-903-81 becomes stronger.

Selects the scanner and printer gamma settings used when ‘Service Mode’ for Text mode is selected.

0: Scanner gamma for ‘Soft’ is used. 1: Scanner gamma for ‘Normal’ is used. 2: Scanner gamma for ‘Sharp’ is used. Selects the scanner and printer gamma

settings used when ‘Service Mode’ for Text/Photo mode is selected. 0: Scanner gamma for ‘Photo Priority’ is

Sused.

1: Scanner gamma for ‘Normal’ is used. 2: Scanner gamma for ‘Text Priority’ is

used.

0 ~ 5 1/step

4-41

Page 52

SERVICE PROGRAM MODE 18 July, 2001

4-904

Mode No.

(Class 1, 2 and 3)

IPU Setting-1

Gradation

Processing Selection Photo

3 Gradation

Processing Selection Text/Photo

Forced Binary

Mode

5 Laser Pulse

Positioning in Text/Photo Mode

6 Smoothing

Filter Level in Photo Mode

7 Texture Erase

Filter Level in Text/Photo Mode

Thin Line Mode

in Laser Writing

- Text

22 Thin Line Mode

in Laser Writing

- Text/Photo

Function Settings

Selects the gradation processing procedure.

0: Three-gradation error diffusion 1: Four-gradation error diffusion 2: 8" x 8" dither matrix

3: 6" x 6" dither matrix 4: 4" x 4" dither matrix

A larger dither matrix gives coarser reproduction of halftones. This SP is ignored unless the user selects ‘Serv ice Mode’ in UP mode.

Selects the gradation processing procedure. 0: Three-gradation error diffusion

1: Four-gradation error diffusion This SP is ignored unless the user selects ‘Service Mode’ in UP mode. 1: Binary processing is done for all image

modes.

Selects whether phase control is done in text/photo mode or not.

This mode is available when 0 is selected with SP4-904-003.

Selects the smoothing filter level in photo mode. 0: None

1: Weak 5: Strong Selects the strength of the filter for erasing

texture from the image in text/photo mode. 0: None

1: Weak 2: Strong Selects thin line mode level in laser writing for text mode. 0: None

1: Thin Line Mode - Weak 2: Thin Line Mode - Strong Selects thin line mode level in laser writing for text/photo mode. 0: None

1: Thin Line Mode - Weak 2: Thin Line Mode - Strong

0 ~ 4

0 ~ 1

0: No

1: Yes

0: No

1: Yes

0 ~ 5

0 ~ 2

23 Thin Line Mode

in Laser Writing

- Pale

Selects thin line mode level in laser writing for pale mode. 0: None

1: Thin Line Mode - Weak 2: Thin Line Mode – Strong

4-42

0 ~ 2

Page 53

18 July, 2001 SERVICE PROGRAM MODE

4-905

4-906

Mode No.

(Class 1, 2 and 3)

IPU Setting-14-904

Thin Line Mode

in Laser Writing

- Generation

Image Data Path

Image Data

Path - Filtering/ Magnification

4 Printout Type

selection

Image Processing Priority in Text/Photo Mode

IPU Setting-24-909

Data Compression4-910

3ABS Core

Selects thin line mode level in laser writing for generation mode.

0: None

1: Thin Line Mode - Weak 2: Thin Line Mode – Strong

Selects one of the following video data outputs, which will be used for printing.

0: Magnification → Filtering 1: Filtering → Magnification

2: Pre-filter → Magnification → Filtering 3: Pre-filter → Filtering → Magnification

4: Normal operation

Do not change the value.

Selects one of the following video data outputs, which will be used for the printer controller

0: Normal operation

1: Black/White

2: Not printed out 3: Application through

Do not change the value.

Selects either text priority or photo priority for text/photo mode. Photo priority:Background erase is off

Letter priority:Background erase is on.

This SP is ignored unless the user selects ‘Service Mode’ in UP mode.

Designer use only. Do not change the

value.

Designer use only. Do not change the value.

Function Settings

0 ~ 2

0: Photo

priority

1: Text

priority

Tables

Service

4-43

Page 54

SERVICE PROGRAM MODE 18 July, 2001

4-911

Mode No.

(Class 1, 2 and 3)

HDD 1 Front (Black)

HDD 1 Media

Check

Formatting

HDD 1 Bad

Sector Information Reset

7 HDD 1 Bad

Sector Display

8 HDD 1 Model

Name Display

Function Settings

Checks for bad sectors on hard disk 1 that develop during machine use. This takes 4 minutes.

All the image data on this disk is erased, and the stamp data is erased from both disks.

This SP mode should be done when an abnormal image is printed. There is no need to do this at installation because the

hard disk firmware already contains bad sector information, and damage is not likely during transportation. Bad sectors detected with this SP mode will be stored in the NVRAM with the bad sector data copied across from the firmware. If the machine detects over 50 bad sectors, SC364 will be generated. At this time, use SP4-911-2.

Formats hard disk 1. This takes 4 minutes.2 HDD 1

Do not turn off the main power switch during this process.

Resets the bad sector information which is stored in the NVRAM.

This SP should be used when the hard disk is replaced.

Displays the number of bad sectors there are on hard disk 1.

If the machine detects a total of over 50 bad sectors on the disk, SC364 will be generated. At this time, use SP4-911-2.

Displays the model name of HDD 1.

If the HDD is not installed or the HDD connector is not connected, SC360 wi ll be displayed. However, the user can make single copies.

Start

Total: 0 Copy: 0 Printer: 0 AF (Copy Server): 0

4-44

Page 55

18 July, 2001 SERVICE PROGRAM MODE

4-912

Mode No.

(Class 1, 2 and 3)

HDD 2 Rear (Gray)

HDD 2 Media

Check

Formatting

HDD 2 Bad

Sector Information Reset

7 HDD 2 Bad

Sector Display

8 HDD 2 Model

Name Display

HDD Interface Type Selection4-913

Forced HDD Selection4-914

Function Settings

Checks for bad sectors on hard disk 2 that develop during machine use. This takes 4 minutes.

All the image data on this disk is erased, and the stamp data is erased from both disks.

This SP mode should be done when an abnormal image is printed. There is no need to do this at installation because the hard disk firmware already contains bad sector information, and damage is not likely during transportation. Bad sectors detected with this SP mode will be stored in the NVRAM with the bad sector data copied across from the firmware. If the machine detects over 50 bad sectors, SC365 will be generated. At this time, use SP4-912-2.

Formats hard disk 2. This takes 4 minutes.2 HDD 2

Do not turn off the main power switch during this process.

Resets the bad sector information which is stored in the NVRAM.

This SP should be used when the hard disk is replaced.

Displays the number of bad sectors there are on hard disk 2.

If the machine detects a total of over 50 bad sectors on the disk, SC365 will be generated. At this time, use SP4-912-2.

Displays the model name of HDD 2.

If the HDD is not installed or the HDD connector is not connected, SC361 wi ll be displayed. However, the user can make single copies. (See Detailed Section Descriptions – Others for details on the use of the two hard disks.)

Designer use only. Do not change this setting.

Start

Total: 0 Copy: 0 Printer: 0 AF (Copy Server): 0

0: Ultra

DMA/33 I/F

1: Multiword

DMA I/F

0: Default

1: HDD1 2: HDD2

Tables

Service

4-45

Page 56

SERVICE PROGRAM MODE 18 July, 2001

5-019

5-024

5-104

5-112

5-118

Mode No.

(Class 1, 2 and 3)

Tray Paper Size Selection

11st Tray

6 6th Tray

mm/inch Display Selection

Job Memory in Sample Copy5-038

A3/DLT Double Count

ID Level Setting5-106

6ADS Level

Selection S

Non-standard Paper Select ion

Optional Counter Type5-113

Disable Copying

Function Settings

Selects the paper size in the 1st tray.

Selects the paper size in the 6

tray (tray 3

of the optional LCT).

Selects what unit is used.

After selecting the unit, turn the main power switch off and on.

Selects whether Next Job can be set before sample copy is finished. 0: Next Job cannot be set until sample copy

is finished.

1: Next Job can be set before sample copy

is finished.

Specifies whether the counter is doubled for A3/11" x 17" paper.

If “1” is selected, the total counter and the current user code counter count up twice when A3/11" x 17" paper is used.

Selects the image density level that is used in ADS mode.

Selects whether a non-standard paper size can be input for trays 2 and 3 (universal tray) or not.

If “Yes” is selected, the customer will be able to input a non-standard paper size using a UP mode.

This SP is for Japan only. Do not change the value.

Disables copying.

The setting should always be “0”.

1/2

" x 11"

8 A3 B4 A4R 11" x 17" 8

1/2

" x 14"R

1/2

" x 11"R

A4 B5 A5 A5R 8

1/2

" x 11"

1/2

" x 8 " x 8

1/2 1/2

0: mm

1: inch

YES

1 ~ 9 1 notch/step

YES

0 ~ 5 1/step

0: No

1: Yes

" "R

4-46

Page 57

18 July, 2001 SERVICE PROGRAM MODE

5-121

5-131

5-212

5-501

5-504

Mode No.

(Class 1, 2 and 3)

Mode Clear-Opt. Controller Removal5-120

This function is for Japanese machines only.

Counter Up Timing

Determines the key counter count up timing. 0: The key counter counts up at paper feed

timing.

1: The key counter counts up when the

paper exits to the finisher tray.

This setting does not affect the timing of the copier total counter.

APS Mode5-127

Selects the availability of APS mode.

0: APS can be used 1: APS cannot be used

Paper Size Type Selection

Selects the paper size type (for originals and copy paper). (The default setting depends on the settings of DIP SW 1 and 2

on the SICU.)

After changing the value, turn the main power switch off and on.

Paper Print Setting

Page Print

Position Side Side to Side

Page Print

Position Up and Down

PM Alarm Interval

Jam Alarm Interval (RDS Function)

Jam Alarm

Level

Jam Alarm

Long Time

Error Alarm (RDS Function)5-505

Adjusts the page print position for the reverse side when compared to the front

side. –10 (To the right) ~ 10 (To the left) Adjusts the page print position for the

reverse side when compared to the front

side. –10 (Upper) ~ 10 (Lower)

Set the PM alarm interval. A message is displayed on the screen when the PM counter reaches this value x 1,000.

The message can be turned off by the

following procedure: Clear Modes key – 0 – Clear key – 0 – Clear key (hold for more than 3 seconds). However, the PM counter is not cleared. To clear the PM counter, use SP7-804.

Japanese version only. Do not change the setting.

Japanese version only. Do not change

the setting.

Japanese version only. Do not change the setting.

Function Settings

0: Yes

1: Stand-by 2: No

0: Feed

1: Exit

0: Yes

1: No

0: Japan

1: North

America 2: Europe 3: China

–10 ~ 10 mm 1 mm/step

0 ~ 999 (k)

0 (No PM Alarm)

0: Z 1: L 2: M

3: H

0: OFF

1: ON

0 ~ 255 (k)

30 k

Tables

Service

4-47

Page 58

SERVICE PROGRAM MODE 18 July, 2001

5-513

5-514

5-590

5-801

5-802

Mode No.

(Class 1, 2 and 3)

PM Call Interval (RDS Function)

Copy Paper

Standard Original Paper

Standard

PM Call On/Off Setting

1 Copy Paper

Standard

2 Original Paper

Standard

Auto Call Setting (RSS Function)

2 Door Open 3 Paper Supply 4 Staple Supply 5 Toner Supply

Memory All Clear

1ALL 2SICU 3BCU

Printer Free Run

Input Check5-803

Japanese version only. Do not change the setting.

Japanese version only. Do not change

the setting. Japanese version only. Do not change

the setting.

Japanese version only. Do not change

the setting. Japanese version only. Do not change

the setting.

Resets all correction data for process control and all software counters . Als o, returns all modes and adjustments to the default settings. Settings for the SICU and BCU can be cleared separately (marked with an S or a B in the Mode No column of this table). See the “Memory All Clear” section for how to use this SP mode correctly. Touch “Start” for over 3 seconds, then turn the main power switch off and on.

Normally, this SP mode should not be used.

It is used only after replacing the NVRAM, or when the copier malfunctions due to a damaged NVRAM. The LCD coordinates are also cleared, see “Touch Screen Calibration”.

Press “On” on the display, then go to copy mode. Input the required settings, then press the “Start” key to start the free run. The free run stops when the simulation for the set number of copies is finished.

Before starting the free run, disconnect the finisher connector. Otherwise, a paper jam is detected.

Displays the signals received from sensors and switches. See the “Input Check” section for details.

Function Settings

0 ~ 9999 k

300 k

1 k step 0 ~ 9999 k

300 k

1 k step

0: No

1: Yes 0: No

1: Yes

0: OFF

1: ON 0: OFF

1: ON

0: OFF

1: ON

0: OFF

1: ON

Start

4-48

Page 59

18 July, 2001 SERVICE PROGRAM MODE

5-811

5-812

Mode No.

(Class 1, 2 and 3)

Output Check5-804

Turns on the electrical components individually for test purposes. See the “Output Check” section for details.

Machine Serial Number

1 Machine Serial

Number S

3 ID 2 Code

Phone No. Setting for Servicing

1 Phone No. for

Servicing

Fax No. for

SMC Report

CSS Function (RDS Function)5-816

CSS PI Device Code (RDS Function)5-821

Plug and play5-907

Printer Counter Display5-914

Mechanical Counter Detection5-915

GPC Counter5-917

A3/DLT Counter Display5-918

Copy Server Password Check5-954

Displays the machine serial number. The number can be reinput using the number keys.

This function is for Japanese machines

only.

Use this to input the telephone number of the service representative (this is displayed when a service call condition occurs.)

Press the “ Press the “Clear modes” key to delete the telephone number.

Use this to input the telephone number of the service representative. This number is

printed on the SMC print.

Japanese version only. Do not change

the setting.

Japanese version only. Do not change

the setting.

This SP mode is for designer use only.

Selects whether or not the total printer

counter is displayed in the UP mode.

Checks whether the mechanical counter inside the inner cover is connected or not.

Japanese version only. Do not change the setting.

Selects whether the A3/DLT counter is displayed in UP mode or when the “Total

Counter” key is pressed.

If “1” is selected, when a file in the copy server is selected, the password for that file

is displayed.

Function Settings

•

” key to input a pause.

ON OFF

0 ~ 4

Off

0: Not

detected 1: Detected 2: Unknown

0: Normal

1: Display the

password.

Tables

Service

Delete All the Saved Files5-965

Deletes all the copy server files stored in the HDD.

4-49

Page 60

SERVICE PROGRAM MODE 18 July, 2001

5-967

5-990

6-006

6-007

Mode No.

(Class 1, 2 and 3)

Copy Server: Disable Function

If “1” is selected, the copy server function is disabled.

Turn the main switch off and on after changing the setting.

Delete All the Stored Files in CD5-968

Deletes all the copy server files stored in the CD currently in the CD-RW.

SMC Print

1All

2SP

3 User Program

4 Logged Data

DF Registration Adjustment

1 Side-to-Side

Leading Edge (Thin Original) B

Leading Edge

(Duplex-1st)

4 Leading Edge

(Duplex-2nd)

ADF Input Check

1 Group 1 Displays the signals received from sensors

2 Group 2 Displays the signals received from sensors

3 Group 3 Displays the signals received from sensors

ADF Output Check6-008

Prints all the system parameter lists. See the “System Parameter and Data Lists” section for how to print the lists.

Prints the SP mode data list. See the “System Parameter and Data Lists” section for how to print the lists.

Prints the UP mode data list. See the “System Parameter and Data Lists” section for how to print the lists.

Prints the machine status history data list. See the “System Parameter and Data Lists” section for how to print the lists.

Adjusts the printing side-to-side registration in the ADF mode.

•

Use the “

Adjusts the original stop position.2

Use the “

Adjusts the original stop position against the original left scale in one-sided original

mode.

Use the “

Adjusts the original stop position against the original left scale in two-sided original

mode.

Use the “

and switches of the ADF. See the “Input Check” section for details.

Turns on the electrical components of the ADF individually for test purposes. See the “Output Check” section for details.

” key to toggle between + and –.

•

” key to toggle between + and –.

•

” key to toggle between + and –.

•

” key to toggle between + and –.

Function Settings

0: Normal

1: Disable

copy server

Start

–3 ~ +3

0.1 mm/step

+0.0 mm

–10 ~ +10

0.13 mm/step

+0.0 mm

–29 ~ +29

0.13 mm/step

+0.0 mm

–29 ~ +29

0.13 mm/step

+0.0 mm

4-50

Page 61

18 July, 2001 SERVICE PROGRAM MODE

6-009

6-105

6-107

6-113

6-117

Mode No.

(Class 1, 2 and 3)

DF Free Run (Two-sided Original)

Performs an ADF free run in two-sided original mode. Press “1” to start.

This is a general free run controlled from the copier. For more detailed free run modes, see the ‘Test Points/Dip Switches/LEDs’ section.

ADF Motor Speed Adjustm ent6-016

After pressing the Start key, the machine automatically adjusts the speeds of the ADF motors in the following order: Feed-in motor → Transport Belt Motor → Feed-out Motor (High) → Feed-out Motor (Low)

Staple Position Adjustment

Adjusts the stapling position in the main scan direction

Use the “ A larger value causes the stapling position to shift outward.

Finisher Free Run

1 Staple Mode The finisher simulates staple mode

operation. Press [1] to start the free run. To stop the free run, press [0].

2 Shift Mode The finisher simulates staple mode free run

with tray shifting (without stapling). Press [1] to start the free run.

Punch Hole Position Adjustment

Adjusts the punch hole position in the subscan direction for the punch unit.

Use the “ A larger value shifts the punch holes towards the edge of the paper.

Sheet Conversion (Thick Paper)6-116

Multiply the normal limit by this number to determine the staple limit number for thick

paper mode.

Finisher Input Check

1 Group 1 Displays the signals received from sensors

and switches of the finisher. See the “Input Check” section for details.

2 Group 2 Displays the signals received from sensors

and switches of the finisher. See the “Input Check” section for details.

3 Group 3 Displays the signals received from sensors

and switches of the finisher. See the “Input Check” section for details.

•

” key to toggle between + and –.

•

” key to toggle between + and –.

Function Settings

OFF

–1~ +3.5

0.5 mm/step

+0.0 mm

–7.5 ~ +7.5

0.5 mm/step

0 mm

1 ~ 3

Tables

Service

4 Group 4

Displays the signals received from sensors and switches of the finisher. See the “Input Check” section for details.

4-51

Page 62

SERVICE PROGRAM MODE 18 July, 2001

7-002

7-003

7-006

7-009

7-101

Mode No.

(Class 1, 2 and 3)

Finisher Output Check6-118

Turn on the electrical components of the finisher individually for test purposes. See the “Output Check” section for details.

Punch Function Enabled (Thick Paper)6-119

Determines whether punch mode is

enabled or not in thick paper mode.

Communication Test - Tandem Job6-801

This SP mode is for designer use only.

Main Motor (Drum Motor) Operation Time7-001

B Displays the total drum rotation time. Min.

Original Counter

1 Total S Displays the total number of fed originals. 2Copy

3 Copy Server

Copy/Printer Counter

1 Total Count 2Copy 4 Printer

GPC Counter

1 GPC Total S 2 GPC Copy S 3 GPC Printer S

Rental GPC Counter

1 GPC Total S 2 GPC Copy S 3 GPC Printer S

Copy Counter by Paper Size

5 A4 Sideways S

6 A5 Sideways S 14 B5 Sideways S 38 LT Sideways S 44 HLT Sideways S

128 Other Sizes S 132 A3 S 133 A4 Lengthwise S 134 A5 Lengthwise S 141 B4 S 142 B5 Lengthwise S 160 DLT S 164 LG S 166 LT Lengthwise S 172 HLT Lengthwise

Displays the total number of fed originals in

copy mode. Displays the total number of fed originals in

copy server mode.

Displays the total number of prints in all

modes. Displays the total number of prints in copy

mode. Displays the total number of prints in printer

mode.

Japanese version only.

Displays the total number of prints by paper size.

Function Settings

0: No

1: Yes

4-52

Page 63

18 July, 2001 SERVICE PROGRAM MODE

7-202

7-204

7-301

7-304

Mode No.

(Class 1, 2 and 3)

Total Scan Count7-201

Displays the total number of scanned

originals.

Original Counter b y Size

4A3 S

5A4 S

6A5 S 13 B4 S 14 B5 S 32 DLT S 36 LG S 38 LT S 44 HLT S

128 Other Sizes S

Copy Counter by Paper Tray

1 1st Paper Tray S

2 2nd Paper Tray S

3 3rd Paper Tray S

4 4th Paper Tray S

5 5th Paper Tray S

Copy Counter – Paper Tray7-204

6 6th Paper Tray

Total ADF Counter7-205

Staple Counter7-206

Punch Counter7-207

Total Copies By Reproduction Rat io

1 32% ~ 49% S

2 50% ~ 99% S

3 100% S

4 101% ~ 200% S

5 201% ~ 400% S

6 Direct Mag. S

Direct Size

Mag. 8Size Mag. S 9 Fixed Mag. S

Total Copies By Copy Mode

1 Letter S 2 Letter/Photo S 3 Photo S 4 Generation S 5Pale S 6 Punch S 7 Multiple Copy S

Displays the total number of scanned originals by original size.

Displays the total number of sheets fed from each paper feed tray.

Displays the total number of sheets fed

from each paper feed tray.

Displays the total number of originals fed

by the ADF.

S Displays the total number of staples used.

Displays the total number of hole punch

operations.

Displays the total number of prints by reproduction ratio.

Displays the total number of prints by copy mode.

Function Settings

Tables

Service

4-53

Page 64

SERVICE PROGRAM MODE 18 July, 2001

7-304

7-305

7-306

7-321

Mode No.

(Class 1, 2 and 3)

Total Copies By Copy Mode

8Sort S 9Staple S

10 Combine S 11 Erase Copy S 12 Duplex Copy S 13 ADF S 14 Double S 15 2-sided Original S 16 Interrupt S

Combine Mode

- 1 Side

Combine Mode

- 2 Side 19 Mini Book Mode S 20 Magazine Mode S

Batch (SADF)

Mode Mixed Size

Mode

23 Thin Original S

Total Copies in Multiple Copy Mode

1 1 to 1 S 2 1 to 2 ~ 5 S 3 1 to 6 ~ 10 S 4 1 to 11 ~ 20 S 5 1 to 21 ~ 50 S 6 1 to 51 ~ 100 S 7 1 to 100 ~ 300 S 8 1 to 301 ~ S

Copy: Each Mode Job

1Sort S 2Staple S 3 Punch S 4Next Job S 5 Sample Copy S

Copy Server: Scanned Storage7-320

1 Number of Scan

Copy Server: Original Counter by Size

4A3 S 5A4 S

6A5 S 13 B4 S 14 B5 S 32 DLT S 36 LG S 38 LT S 44 HLT S

128 Other Size S

Displays the total number of prints by copy mode.

S S

Displays the total number of prints by multiple copy quantity.

Displays the total number of copy jobs that have been done for various modes.

Displays the total number of stored

originals in the copy server.

Displays the total number of stored originals in the server by size.

Function Settings

4-54

Page 65

18 July, 2001 SERVICE PROGRAM MODE

7-323

7-324

7-325

7-326

7-327

7-328

Mode No.

(Class 1, 2 and 3)

Copy Server: Each Size of Copies

5 A4 Sideways S

6 A5 Sideways S 14 B5 Sideways S 38 LT Sideways S 44 HLT Sideways S

128 Other Sizes S 132 A3 S 133 A4 Lengthwise S 134 A5 Lengthwise S 141 B4 S 142 B5 Lengthwise S 160 DLT S 164 LG S 166 LT Lengthwise S 172 HLT Lengthwise S

Copy Server: Print Job Counter

1 Duplex Job S

2Sort Job S

3 Staple Print Job S

4 Punch Print Job S

5 Sample Copy S

6 First Page Print S

Copy Server: Print Job Page Distribution

11 S

22 S

33 - 5 S

46 - 10 S

5 11 - S

Copy Server: Print Job File Distribution

11 S

22 - 5 S

36 - 10 S

4 11 - S

Copy Server: Print Job Set Distribution

1 1 to 1 S

2 1 to 2 ~ 5 S

3 1 to 6 ~ 10 S

4 1 to 11 ~ 20 S

5 1 to 21 ~ 50 S

6 1 to 51 ~ 100 S

7 1 to 100 ~ 300 S

8 1 to 301 ~ S

Copy Server: Copy Number of Each Job

1 Duplex Copy

2 Duplex Original

Displays the total number of prints made from the copy server by paper size.

Displays the total number of copy jobs made from the copy server.

Displays the number of jobs by number of pages, made from the copy server.

Displays the number of jobs by the number of consecutive files in the job, made from the copy server.

Displays the total number of prints by multiple copy quantity, using the copy server.

Displays the total number of duplex prints

of one-sided originals from the copy server. Display the total number of prints of two-

sided originals from the copy server.

Function Settings

Tables

Service

4-55

Page 66

SERVICE PROGRAM MODE 18 July, 2001

7-331

7-332

7-333

Mode No.

(Class 1, 2 and 3)

Tandem Job7-330

Tandem: Copy

1 Master: Copy

2 Slave: Copy

Tandem/Master: Copy

Original Mode:

Text

2 Original Mode:

Text/Photo

3 Original Mode:

Photo

4 Original Mode:

Generation

5 Original Mode:

Pale 6 Punch S 7 Repeat S 8Sort S 9Staple S

10 Series S 11 Erase S 12 Duplex Copy S 13 ADF Mode S 14 Double Copy S 15 Duplex Original S 16 Interrupt S 17 Combine 1 Side S 18 Combine 2 Side S 19 Booklet S 20 Magazine S 21 Batch Mode S 22 Mixed Sizes S 23 Thin S

Tandem/Slave: Copy

Original Mode:

Text

Original Mode:

Text/Photo 3 Original Mode:

Photo 4 Original Mode:

Generation 5 Original Mode:

Pale 6 Punch S 7 Repeat S 8Sort S

Function Settings

Displays the number of jobs made as the

master in tandem mode.

Displays the number of copies made in

tandem mode as the master. Displays the number of copies made in

tandem mode as the slave.

Displays the number of copies made in

each master mode.

S S S S

Displays the number of copies made in

each slave mode.

S S S S

4-56

Page 67

18 July, 2001 SERVICE PROGRAM MODE

7-333

7-403

Mode No.

(Class 1, 2 and 3)

Tandem/Slave: Copy

9Staple S

Total SC Counter7-401

SC History

1 Latest S 2 Latest 1st S 3 Latest 2nd S 4 Latest 3rd S 5 Latest 4th S 6 Latest 5th S 7 Latest 6th S 8 Latest 7th S 9 Latest 8th S

10 Latest 9th S

Total Jam Counter7-501

Total Copy Jam Counter7-502

Total Original Jam Counter7-503

Function Settings

Displays the number of copies made in each slave mode.

Displays the total number of service calls

that have occurred.

Displays the latest 10 service call codes.

Displays the total number of copy jams and

original jams.

S Displays the total number of copy jams.

Displays the total number of original jams.

Tables

Service

4-57

Page 68

SERVICE PROGRAM MODE 18 July, 2001

7-504

Mode No.

(Class 1, 2 and 3)

Copy Jam Counter by Jam Location These are jams when the paper does not activate the sensor.

1At Power On

3 1st Paper Tray S (1st Paper Feed Sensor) 4 2nd Paper Tray S (2nd Paper Feed Sensor) 5 3rd Paper Tray S (3rd Paper Feed Sensor) 6 4th Paper Tray S (4th Paper Feed Sensor) 7 5th Paper Tray S (5th Paper Feed Sensor) 8 6th Paper Tray S (6th Paper Feed Sensor)

LCT Relay

Sensor

10 LCT Exit

Sensor

12 Relay Sensor S 13 Registration

Sensor

15 Fusing Exit

Sensor

16 Exit Sensor S 19 Duplex

Entrance

Sensor

20 Duplex

Transport

Sensor 1

21 Duplex

Transport

Sensor 2

22 Duplex

Transport

Sensor 3

23 Inverter Tray

Paper Sensor

25 Entrance

Sensor - Fin.

26 Upper Tray Exit

Sensor - Fin.

27 Shift Tray Exit

Sensor - Fin.

28 Stapler Tray

Entrance

Sensor - Fin.

29 Stapler Tray

Paper Sensor -

Fin.

35 Entrance

Sensor - FIN

Staple Tray

Displays the total number of copy jams by location. The information in brackets shows

the sensors that are used to detect these jams.

S S

S S S S

Function Settings

4-58

4-58a

Page 69

18 July, 2001 SERVICE PROGRAM MODE

7-504

7-505

7-506

Mode No.

(Class 1, 2 and 3)

Copy Jam Counter by Jam Location These are jams when the paper stays at the sensor.

53 1st Paper Tray S (1st Paper Feed Sensor) 54 2nd Paper Tray S (2nd Paper Feed Sensor) 55 3rd Paper Tray S (3rd Paper Feed Sensor) 56 4th Paper Tray S (4th Paper Feed Sensor) 57 5th Paper Tray S (5th Paper Feed Sensor) 58 6th Paper Tray S (6th Paper Feed Sensor) 59 LCT Relay

Sensor

60 LCT Exit

Sensor

62 Relay Sensor S

Registration

Sensor

Fusing Exit

Sensor

66 Exit Sensor S 69 Duplex

Entrance

Sensor

70 Duplex

Transport

Sensor 1

71 Duplex

Transport

Sensor 2

72 Duplex

Transport

Sensor 3

73 Inverter Tray

Paper Sensor

Original Jam Counter by Jam Location

1At Power On S 3ADF Feed-in

Sensor 4 ADF Feed-out

Sensor

Jam Counter by Copy Size

5 A4 Sideways S 6 A5 Sideways S

14 B5 Sideways S 38 LT Sideways S

44 HLT Sideways S 128 Other Size S 132 A3 S 133 A4 Lengthwise S 134 A5 Lengthwise S 141 B4 Lengthwise S 142 B5 Lengthwise S 160 DLT S

S S

Detected by the entrance and registration

sensors Detected by the exit and inverter sensors.

Displays the total number of copy jams by paper size.

Function Settings

Tables

Service

4-59

4-58b

Page 70

SERVICE PROGRAM MODE 18 July, 2001

7-506

7-507

7-617

7-618

Mode No.

(Class 1, 2 and 3)

Jam Counter by Copy Size

164 LG S 166 LT Lengthwise S 172 HLT Lengthwise S

Jam History

1 Copy: Latest S 2 Latest 1st S 3 Latest 2nd S 4 Latest 3rd S 5 Latest 4th S 6 Latest 5tht S 7 Latest 6th S 8 Latest 7th S

9 Latest 8th S 10 Latest 9th S 11 Original: Latest S 12 Latest 1st S 13 Latest 2nd S 14 Latest 3rd S 15 Latest 4th S 16 Latest 5th S 17 Latest 6th S 18 Latest 7th S 19 Latest 8th S 20 Latest 9th S

Parts PM Alarm Counter Display

Copy Paper

Standard

2 Original Paper

Standard

Parts PM Alarm Counter Clear

1 Copy Paper

Standard Original Paper

Standard

ROM Version Display7-801

PM Counter Display7-803

PM Counter Reset7-804

Displays the total number of copy jams by paper size.

Displays the following items for the most recent 10 jams.

1. Last 5 digits of the total counter value

2. Paper size

3. Detected position

4. Stuck or not fed

This counter is used for the Japanese

market only. This counter is used for the Japanese

market only.

Clears the counter of SPS7-617-1.

Clears the counter of SPS7-617-2.

Displays the ROM versions. 001: SICU 002: BCU

003: CSS (P1) – Japan only 004: HDC (Hard disk controller) 005: Scanner 006: ADF 007: Finisher 008: Printer

S Displays the PM counter since the last PM.

Resets the PM counter. Start

Function Settings

4-60

4-58c

Page 71

18 July, 2001 SERVICE PROGRAM MODE

7-816

7-825

7-826

Mode No.

(Class 1, 2 and 3)

SC/Jam Counter Reset7-807

Resets the SC and jam counters. Press “Start” to reset.

Counter Clear7-808

Resets all counters, except for the total counters (SP 7-003): Press “Start” to reset.

Access Code Clear7-810

Resets both the key operator code and the weekly timer code (‘key operator code for off setting’). Press “Start” to reset.

Copy Counter Clear- Paper Tray

1 Paper Tray 1

2 Paper Tray 2

3 Paper Tray 3

4 Paper Tray 4

5 Paper Tray 5

6 Paper Tray 6

Total ADF Counter Reset7-817

Copy Counter Clear - Magnification7-822

Total Counter Clear

Option Counter Error Counter

1 Total S

2Staple S

Option Counter Error Counter Clear7-827

Punch Counter Clear7-828

Rental GPC Counter Clear7-829

SC Details7-902

Copy Counter Clear – Copy Mode7-904

Copy Counter Clear – Multiple Copy Mode7-905

Original Counter Clear – Size7-906

Job Counter Clear7-907

Resets the total copy counter by paper tray. These SP modes can be used after replacing the pick-up, feed, and separation rollers in the paper feed stations.

Resets the ADF Counter (SP7-205). Press “Start” to reset.

Resets all counters of SP7-301. Start

Resets the electrical total counter.

Usually, this SP mode is done at installation. This SP mode works only once when the counter value is negative.

For Japanese version only.

Resets the punch counter (SP7-207)

For Japanese version only.

Displays details about the latest SCs. Not all SCs have these details. For designer use only.

Resets all counters of SP7-304, 7-331, 7-332, and 7-333.

Resets all counters of SP7-305. Start

Resets all counters of SP7-202. Start

Resets all counters of SP7-306, and 7-330. Start

Function Settings

Start

Tables

Service

4-61

4-58d

Page 72

SERVICE PROGRAM MODE 18 July, 2001

Mode No.

(Class 1, 2 and 3)

Copy: Original Counter Clear7-908

Copy Server: Scanned Storage Counter Clear7-920

Copy Server: Original Counter Clear - Size7-921

Copy Server: Print Counter Clear7-923

Copy Server: Print Job Counter Clear7-924

Copy Server Print Job Page Distribution Clear7-925

Copy Server: Print Job File Distribution Clear7-926

Copy Server: Print Job Set Distribution Clear7-927

Copy Server: Copy Counter Clear – Copy Mode7-928

SC990 Information7-990

Function Settings

Resets SP7-002-2. Start

Resets the counter of SP7-320. Start

Resets all counters of SP7-321. Start

Resets all counters of SP7-323. Start

Resets all counters of SP7-324. Start

Resets all counters of SP7-325. Start

Resets all counters of SP7-326. Start

Resets all counters of SP7-327. Start

For Japanese machines only.

S Designer use only.

4-62

4-58e

Page 73

18 July, 2001 PM PARTS

5. PREVENTIVE MAINTENANCE SCHEDULE

5.1 PM PARTS

NOTE: The amount mentioned as the PM interval indicates the number of prints,

unless stated otherwise.

Symbol key:

OPTICS

Exposure Glass i 300 k 1st ~ 3rd Mirrors i 300 k Opt ical cloth APS Sensor i 300 k Dry cloth Scanner Rail i 300 k Dry cloth Scanner Filter Toner Shield Glass LD Filter White Patch i 300 k Dry cloth

DEVELOPMENT UNIT

Side Seal Development Unit i 300 k Blo wer brush or dry cloth Development Roller Entrance Seal Toner Hopper (Outside) i 300 k Blower brush or dry cloth Gears (All Gears) i 300 k Blower brush Toner Filter (Center) r 400 k Toner Filter (Front) r 400 k Developer

Waste Toner Collection Bottle

Sucked Toner Collection Bottle

Development Suction Motor Ass’y

R, r: Replace on a PM part counter basis (refer to Service Tables – PM

Counter) R: The counter counts up every copy, in the same way as the copy

counter

r: The counter only counts up if that part was used for the copy I: Inspect, and clean and/or lubricate i: Inspect, and clean and/or lubricate only if necessary

Description

Activity Type Interval

I I I

I I

r 300 k r 2,400k r 1,200 k r 2,500 k

600 k Blower brush 300 k Optical cloth 300 k Blower brush

300 k Blower brush or dry cloth

300 k Blower brush and dry cloth 300 k Blower brush or dry cloth

Note/Remarks

TD sensor initial setting (SP2-801)

A4 6% Chart A4 6% Chart A4 6% Chart

Preventive

Maintenance

AROUND THE DRUM

Side Seal i 300 k Blo wer brush or dry cloth Ground Plate/Screw

i 300 k

5-1

Electrical connection check Alcohol or water

Page 74

PM PARTS 18 July, 2001

Description

Drum Filter

Activity Type Interval

380 k Blower brush

Note/Remarks

Cleaning Brush Seal i 300 k Blower brush or dry cloth Cleaning Entrance Seal ID Sensor Transfer Unit Entrance

Stay Corona Wire Casing Drum Potential Sensor Quenching Lamp Cleaning Brush Toner Filter Transfer Belt Cleaning

Blade Cleaning Blade

I I

I R R

R R

300 k Blower brush or dry cloth 300 k Blower brush or dry cloth

300 k

Blower brush or dry cloth

300 k Damp cloth 300 k Blower brush 300 k Blower brush or dry cloth 300 k 300 k

450 k

300 k Grid Plate r 300 k Charge Corona Wire r 300 k Wire Cleaner r 300 k Wire Cushion r 300 k Pick-off Pawls Transfer Belt Transfer Belt Bias Brush Rear Casing Guide Exit Bias Plate Belt Drive Roller Belt Roller Cleaning Bias Roller

R R

I I I I I I

300 k

450 k

450 k Blower brush

300 k Dry cloth

300 k Blower brush

450 k Alcohol

450 k Alcohol Ozone Filter r 1,500 k Carrier Catcher i 300 k

FUSING UNIT

Pressure Roller Cleaning Roller Bearings

Pressure Roller Cleaning Roller

Fusing Entrance Guide Oil Supply & Cleaning

Web

i 600 k

600 k

300 k Water or alcohol

300 k (EU) 600 k (US)

Inspect only

Hot Roller r 600 k Hot Roller Stripper

300 k

600 k

Dry cloth

Pressure Roller Stripper 600 k Dry cloth Fusing Exit Roller 600 k Water or alcohol Pressure Roller r 500 k Pressure Roller Cleaning

Roller Cleaner

r 600 k

Hot Roller Ball Bearing i 600 k Inspect only

5-2

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18 July, 2001 PM PARTS

Description

Pressure Roller Ball Bearing

Activity Type Interval

i 700 k

Note/Remarks

Inspect only

Hot Roller Bushing i 600 k Inspect only Pressure Roller Busing i 700 k Inspect only Hot Roller Gear Fusing Exit Guide Plates

I I

300 k Grease (Barrierta)

300 k Water or alcohol Fusing Web Brake Pad r 600 k

PAPER FEED

Relay Roller

300 k Damp cloth Paper Feed Guide Plate i 300 k Damp cloth Registration Rollers Registration Sensor Relay Sensor Paper Dust Remover Paper Feed Sensor

I I I I I

300 k Damp cloth

300 k Blower brush

300 k Damp cloth

300 k Blower brush Paper Feed Rollers r 300 k

DUPLEX

Feed and Transport Rollers

Reverse and Inverter Rollers

Entrance Sensor Entrance Anti-static

Brush Duplex Transport Sensor Duplex Inverter Sensor

I I

300 k

300 k Blower brush

i 300 k

I I

300 k Dry cloth

Damp cloth Damp cloth

Blower brush

Preventive

Maintenance

Description

Activity Type Interval

Note/Remarks

ADF

Transport Belt r 80 k Belt cleaner Feed Belt r 80 k Belt cleaner Separation Roller r 80 k Dry or damp cloth Pick-up Roller r 80 k Dry or damp cloth Sensors i 80 k Blower brush Drive Gears i 80 k Grease G501

5-3

Page 76

PM PARTS 18 July, 2001

Description

LCT

Paper Feed Roller

Pick-up Roller

Separation Roller

Bottom Plate Pad i 300 k Dry or damp cloth

Description

3,000-SHEET FINISHER

Rollers i 300 k Clean with water or alcohol. Brush Roller

Discharge Brush i 300 k Clean with a dry cloth. Sensors i 300 k Blower brush Jogger Fences

Punch Waste Hopper i 300 k Empty the hopper.

Activity Type Interval

r 300 k

Activity Type Interval

i 300 k

Note/Remarks

Inspect only. Replace if necessary.

NOTE: PM parts should be replaced on a PM counter basis. The PM counter

corresponding to the replaced part should be cleared (refer to Service Tables – PM Counter).

5-4

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18 July, 2001 SERVICE CALL CONDITIONS

7. TROUBLESHOOTING

7.1 SERVICE CALL CONDITIONS

7.1.1 SUMMARY

There are 4 levels of service call conditions.

Level Definition Reset Procedure

To prevent the machine from being

damaged, the SC can only be reset by a service representative (see the note below). The copier cannot be operated at all.

The SC can be reset by turning the main power switch off and on if the SC was caused by incorrect sensor detection.

The copier can be operated as usual except for the unit related to the service call.

The SC history is updated. The machine can be operated as usual.

Enter SP mode, then turn the main power switch off and on.

Turn the operation switch or main power switch off and on. A level B’ SC can only be reset by turning the main power switch off and on.

Turn the operation switch off and on.

The SC will not be displayed. All that happens is that the SC history is updated.

NOTE: 1) If the problem concerns electrical circuit boards, first disconnect then

reconnect the connectors before replacing the PCBs.

2) If the problem concerns a motor lock, first check the mechanical load before replacing motors or sensors.

3) When a Level A or B SC occurs while in an SP mode, the display does not indicate the SC number. If this occurs, check the SC number after leaving the SP mode. This does not apply to Level B’ codes.

Trouble-

shooting

7-1

Page 78

SERVICE CALL CONDITIONS 18 July, 2001

7.1.2 SC CODE DESCRIPTIONS

SC101: Exposure Lamp Error

Definition [B]

The standard white level was not detected properly when scanning the white plate.

Possible Causes

• Exposure lamp defective

• Lamp stabilizer defective

• Exposure lamp connector defective

• Dirty standard white plate

• Dirty scanner mirror or scanner mirror out of position

• SBU board defective

• SBU connector defective

• Lens block out of position

SC120: Scanner Home Position Error 1

Definition [B]

The scanner home position sensor does not detect the on c on diti on dur ing initialization or copying.

Possible Causes

• Scanner home position sensor defective

• Scanner motor defective

• MCU defective

• Scanner home position sensor connector defective

• Scanner drive motor connector defective

SC121: Scanner Home Position Error 2

Definition [B]

The scanner home position sensor does not detect the o f f conditi on dur i ng initialization or copying.

Possible Causes

• Scanner home position sensor defective

• Scanner drive motor defective

• MCU defective

• Scanner home position sensor connector defective

• Scanner drive motor connector defective

• Scanner drive wire, timing belt out of position

7-2

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18 July, 2001 SERVICE CALL CONDITIONS

SC124: Scanner Motor Error 1

Definition [B]

The feedback signal from the scanner motor is not detected within 200 ms after the scanner motor turns on.

Possible Causes

• Scanner motor defective

• Poor connection of the connector for the feedback signal

• Poor connection of the connector for the scanner motor power line

SC125: Scanner Motor Error 2

Definition [B]

1) The scanner motor speed is less than 300 mm/s when the scanner home position sensor turns on.

2) The scanner motor stops before scanner home position when the scanner returns.

Possible Causes

• Scanner motor defective

• Large load on the scanner drive

SC126: Scanner Motor Error 3

Definition [B]

The scanner motor does not stop within 12 mm after the scanner home position sensor turns on when the scanner returns.

Possible Causes

• Scanner motor defective

• MCU defective

SC127: Scanner Motor Error 4

Definition [B]

The scanner motor rotates in the opposite direction from the signal from the MCU.

Possible Causes

• Scanner motor defective

Trouble-

shooting

7-3

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SERVICE CALL CONDITIONS 18 July, 2001

SC128: Scanner Motor Error 5

Definition [B]

The scanner motor speed does not reach the target speed within a certain time after the scanner motor starts.

Possible Causes

• Scanner motor defective

• MCU defective

• Scanner drive mechanism defective

SC129: Scanner Motor Error 6

Definition [B]

The scanner motor speed is not controlled properly.

Possible Causes

• Scanner motor defective

• PSU defective

• Scanner unit defective

SC130: SBU Error

Definition [B]

The SICU does not receive the correct signal from the SBU.

Possible Causes

• SICU defective

• SBU defective

• Poor connection between SICU and SBU

SC300: Charge Corona Output Error 1

Definition [B]

A feedback voltage for the charge corona of more than 4.5 V was detected from the charge/bias/grid power pack 9 times consecutively.

Possible Causes

• Charge/bias/grid power pack defective

• Poor charge corona unit connection

SC301: Charge Corona Output Error 2

Definition [B]

A feedback voltage for the charge corona of less than 1.5 V was detected from the charge/bias/grid power pack 9 times consecutively.

Possible Causes

• Charge/bias/grid power pack defective

• Poor charge corona unit connection

7-4

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18 July, 2001 SERVICE CALL CONDITIONS

SC303: Charge Grid Output Error 1

Definition [B]

A feedback voltage for the grid of more than 4.5 V was detected from the charge/bias/grid power pack 9 times consecutively.

Possible Causes

• Charge/bias/grid power pack defective

• Poor charge corona unit connection

SC304: Charge Grid Output Error 2

Definition [B]

A feedback voltage for the grid of less than 1.0 V was detected from the charge/bias/grid power pack 9 times consecutively.

Possible Causes

• Charge/bias/grid power pack defective

• Poor charge corona unit connection

SC305: Charge Corona Wire Cleaner Error 1

Definition [B]

The charge corona wire cleaner does not return to its home position.

Possible Causes

• Charge corona wire cleaner motor defective

• BCU defective

SC306: Charge Corona Wire Cleaner Error 2

Definition [D]

The charge corona wire cleaner motor connector is not connected.

Possible Causes

• Poor connection or disconnected charge corona wire cleaner motor connector

SC310: Drum Potential Sensor Error 1

Definition [D]

When calibrat i ng the drum poten tial sensor during p rocess control initial setting, the drum potential sensor output voltage is out of specification.

Trouble-

shooting

Possible Causes

• Drum potential sensor defective

• Poor connection between the drum potential sensor and the BCU

• BCU defective

• Charge/bias/grid power pack defective

7-5

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SERVICE CALL CONDITIONS 18 July, 2001

SC311: Drum Potential Sensor Error 2

Definition [D]

When calibrat i ng the drum poten tial sensor during p rocess control initial setting, the rate of change of drum potential sensor output with voltage on the drum is out of specification.

Possible Causes

• Drum potential sensor defective

• Poor connection between the drum potential sensor and the BCU

• BCU defective

• Charge/bias/grid power pack defective

SC312: Drum Potential Sensor Error 3

Definition- [D]

When adjusting VD for the unexposed drum during process control initial setting, –1,000 V is applied to the charge grid, but the drum potential sensor detects that VD is more than –970 V.

Possible Causes

• Drum potential sensor defective

• Poor connection between the drum unit and the BCU

• Charge/bias/grid power pack defective

• Dirty or worn charge corona wire

SC313: Drum Potential Sensor Error 4

Definition [D]

When adjusting the drum pote ntial (VD) during process control initial setting, the drum potential sensor detects that VD is more than VG (grid voltage).

Possible Causes

• Drum potential sensor defective

• Poor connection between the drum potential sensor and the BCU

• BCU defective

• Charge/bias/grid power pack defective

• Dirty or worn charge corona wire

7-6

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18 July, 2001 SERVICE CALL CONDITIONS

SC314: Drum Potential Sensor Error 5

Definition [D]

When adjusting the drum pote ntial (VH) for LD power adjustment during process control initial setting, the first time the V

pattern is made, the drum

potential sensor detects that VH is more than 500 V.

Possible Causes

• Drum potential sensor defective

• Poor connection between the drum potential sensor and the BCU

• BCU defective

• LDB defective

SC315: Drum Potential Sensor Error 6

Definition [D]

When adjusting VD for the unexposed drum during process control initial setting, VD does not reach –900 ± 20 V even if VG has been adjusted 5 times.

Possible Causes

• Drum potential sensor defective

• Poor connection between the drum potential sensor and the BCU

• BCU defective

• Charge/bias/grid power pack defective

SC316: Drum Potential Sensor Error 7

Definition [D]

When adjusting the drum pote ntial (VH) for half tone during process control initial setting, the drum potential sensor detects that VH does not become –265 ± 20 V even though the LD power has been changed twenty times.

Possible Causes

• Drum potential sensor defective

• Poor connection between the drum potential sensor and the IBCU

• BCU defective

• LDB defective

• Poor drum cleaning

SC321: Laser Writing Signal (F-gate) Error

Definition- [B]

The laser writing signal (F-gate) does not go to LOW for more than 15 seconds after the copy paper reaches the registration sensor.

Possible Causes

• SICU board defective

• Poor connection of the printer controller

• Printer controlle r defective

Trouble-

shooting

7-7

Page 84

SERVICE CALL CONDITIONS 18 July, 2001

SC322: Laser Synchronization Error

Definition [B’]

The laser synchronization signal cannot be detected from the synchronization detector even if the laser diodes are activated.

Possible Causes

• Poor connection between the laser synchronization detector and the LDB

• Laser synchronization detector out of position

• Laser synchronization detector defective

• LDB defective

• SICU defective

• Front door safety switches defective

SC323: Excessive LD Drive Current

Definition [B’]

The LDB applies more than 110 mA to the LD.

Possible Causes

• LDB defective (not enough power, due to aging)

• Poor connection between the LDB and the SICU board

• High temperature of LD on LDB

SC335: Polygonal Mirror Motor Error 1

Definition [B]

The polygonal mirror motor does not reach its operating speed within 20 seconds after the polygonal mirror motor turns on, or the polygonal mirror motor speed is changed.

Possible Causes

• Polygonal mirror motor defective

• Poor connection between the polygonal mirror motor drive board and the

SICU board

• Polygonal mirror motor drive board defective

• SICU board defective

SC336: Polygonal Mirror Motor Error 2

Definition [B]

The SICU does not receive the stop signal from the polygonal mirror motor for more than 20 seconds after the polygonal mirror motor turns off.

Possible Causes

• Polygonal mirror motor defective

• Poor connection between the polygonal mirror motor drive board and the

SICU board

• Polygonal mirror motor drive board defective

• SICU board defective

7-8

Page 85

18 July, 2001 SERVICE CALL CONDITIONS

SC337: Polygonal Mirror Motor Error 3

Definition [B]

The polygonal mirror motor status is changed even though no signal is sent from the SICU.

Possible Causes

• Polygonal mirror motor defective

• Electrical noise

• Polygonal mirror motor drive board defective

• SICU board defective

SC338: Polygonal Mirror Motor Error 4

Definition [B]

1) The polygonal mirror motor operating speed does not become stable for 20 seconds after the polygonal mirror motor is turned on, or the polygonal mirror motor speed is changed.

2) The stop signal from the polygonal mirror motor does not become stable for 20 seconds after the polygonal mirror motor is turned off.

Possible Causes

• Polygonal mirror motor defective

• Poor connection between the polygonal mirror motor drive board and the

SICU board

• Polygonal mirror motor drive board defective

• SICU board defective

SC340: TD Sensor Error 1

Definition [B]

The TD sensor output voltage is less than 0.5 V or more than 4.0 V 10 times consecutively during copying.

Possible Causes

• TD sensor defective

• Poor connection between the TD sensor and the BCU

• BCU defective

• Toner supply defective

Trouble-

shooting

7-9

Page 86

SERVICE CALL CONDITIONS 18 July, 2001

SC341: TD Sensor Error 2

Definition [B]

One of the following TD sensor output voltages is detected during TD sensor initial setting.

1) Less than 2.5 V when the maximum PWM (255) is applied to the TD sensor.

2) 2.5 V or more when minimum PWM (0) is applied to the TD sensor.

Possible Causes

• TD sensor defective

• Poor connection between the TD sensor and the BCU

• BCU defective

• Toner supply defective

SC342: TD Sensor Error 3

Definition [B]

The TD sensor output voltage is not adjusted to 2.5 ± 0.1 V within 20 seconds during TD sensor initial setting.

Possible Causes

• TD sensor defective

• Poor connection between the TD sensor and the BCU

• BCU defective

• Toner supply defective

SC345: Development Bias Leak

Definition [B]

Maximum PWM for the development bias signal is applied 10 times consecutively.

Possible Causes

• Poor connection between the development bias terminal and the charge/bias/grid power pack

• Charge/bias/grid power pack

7-10

Page 87

18 July, 2001 SERVICE CALL CONDITIONS

SC350: ID Sensor Error 1

Definition [D]

One of the following ID sensor output voltages was detected when checking the ID sensor pattern.

1) VSP ≥ 2.5 V

2) VSP = 0 V

Possible Causes

• ID sensor defective

• ID sensor connector defective

• Poor ID sensor connector connection

• BCU defective

• Charge/bias/grid power pack defective

• Dirty ID sensor

• Defect on the drum at the ID sensor pattern writing area

SC351: ID Sensor Error 2

Definition [D]

The following two conditions were detected at the same time when checking the ID sensor pattern.

1) VSG ≤ 2.5 V or VSG= 0 V

2) The ID sensor output voltage is 5.0 V and the PWM signal input to the ID sensor is 0

Possible Causes

• ID sensor defective

• ID sensor connector defective

• Poor ID sensor connector connection

• BCU defective

• Charge/bias/grid p ack defective

• Dirty ID sensor

• Defect on the drum at the ID sensor pattern writing area

SC352: ID Sensor Error 3

Definition [D]

The ID sensor pattern edge voltage is not at 2.5 V for 1.5 seconds during the ID sensor pattern check.

Trouble-

shooting

Possible Causes

• ID sensor defective

• ID sensor connector defective

• Poor ID sensor connector connection

• BCU defective

• Charge/bias/grid p ack defective

• Dirty ID sensor

• Defect on the drum at the ID sensor pattern writing area

7-11

Page 88

SERVICE CALL CONDITIONS 18 July, 2001

SC353: ID Sensor Error 4

Definition [D]

One of the following ID sensor output voltages is detected at ID sensor initialization.

1) VSG < 4.0 V when the maximum PWM input (255) is applied to the ID sensor.

2) VSG ≥ 4.0 V when the minimum PWM input (0) is applied to the ID sensor.

Possible Causes

• ID sensor defective

• ID sensor connector defective

• Poor ID sensor connector connection

• BCU defective

• Charge/bias/grid p ack defective

• Dirty ID sensor

• Defect on the drum at the ID sensor pattern writing area

SC354: ID Sensor Error 5

Definition [D]

VSG is not adjusted within the target (4.0 ± 0.2 V) within 20 seconds during VSG checking.

Possible Causes

• ID sensor defective

• ID sensor connector defective

• Poor ID sensor connector connection

• BCU defective

• Charge/bias/grid p ack defective

• Dirty ID sensor

• Defect on the drum at the ID sensor pattern writing area

SC355: ID Sensor Voltage Error

Definition [B]

The ID sensor voltage (VP) exceeds 700 V, 10 times consecutively.

Possible Causes

• Drum potential sensor defective

• IO Board defective

• Poor connection of the drum unit connector

• LD defective

• Poor drum cleaning

• Dirty optics

• Drum wear

7-12

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18 July, 2001 SERVICE CALL CONDITIONS

SC360: Hard Disk Drive Error 1

Definition [B]

The machine does not detect the connection signal from HDD 1 when the main switch is turned on.

Possible Causes

• Poor connection between the HDD and SICU

• The dc power connector to the HDD is disconnected

• HDD defective

• SICU defective

SC361: Hard Disk Drive Error 2

Definition [C]

The machine does not detect the connection signal from HDD 2 when the main switch is turned on.

Possible Causes

• Poor connection between the HDD and SICU

• The dc power connector to the HDD is disconnected

• HDD defective

• SICU defective

SC362: Hard Disk Drive Error 3

Definition [C]

The machine does not detect the connection signal from HDD 1 when the operation switch is turned on.

Possible Causes

• Poor connection between the HDD and SICU

• The dc power connector to the HDD is disconnected

• HDD defective

• SICU defective

SC363: Hard Disk Drive Error 4

Definition [C]

The machine does not detect the connection signal from HDD 2 when the operation switch is turned on.

Possible Causes

• Poor connection between the HDD and SICU

• The dc power connector to the HDD is disconnected

• HDD defective

• SICU defective

Trouble-

shooting

7-13

Page 90

SERVICE CALL CONDITIONS 18 July, 2001

SC364: Hard Disk Drive Error 5

Definition [C]

The image data stored in HDD 1 cannot be output properly.

Possible Causes

• When this SC occurs only on ce, this problem will be solved after turning the main power switch off and on.

• When this SC occurs while perf orming SP4-911-1 (HDD 1 media check), it can be cured by doing SP4-911-2 (HDD 1 formatting).

• HDD 1 defective

SC365: Hard Disk Drive Error 6

Definition [C]

The image data stored in HDD 2 cannot be output properly.

Possible Causes

• When this SC occurs only on ce, this problem will be solved after turning the main power switch off and on.

• When this SC occurs while perf orming SP4-912-1 (HDD 2 media check), it can be cured by doing SP4-912-2 (HDD 2 formatting).

• HDD 2 defective

SC366: Hard Disk Drive Error 7

Definition [C]

The number of bad sectors in HDD 1 exceeds the maximum value.

Possible Causes

• NVRAM defective

• HDD 1 defective

SC367: Hard Disk Drive Error 8

Definition [C]

The number of bad sectors in HDD 2 exceeds the maximum value.

Possible Causes

• NVRAM defective

• HDD 2 defective

SC370, 371, 372, 373, 374, 375: IMAC (Image Compression IC) Error 1

Definition [B]

An error occurs during image processing in the IMAC, which handles image compression and image data trans fer between the machine’s components.

Possible Causes

• SICU defective

7-14

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18 July, 2001 SERVICE CALL CONDITIONS

SC376, 377: IMAC (Image Compression IC) Error 2

Definition [B]

While image data is transferred in tandem mode, an error occurs during image processing in the IMAC, which handles image compression and image data transfer between the machine’s c o mpo nents.

Possible Causes

• SICU defective

SC380, 381, 382, 383: Image Data Transfer Timeout

Definition [B]

The image data could not be transferred to the memory within 20 seconds.

Possible Causes

• SICU defective

• Printer controlle r defective

• SBU defective

SC384, 385: Image Data Transfer Timeout in Tandem Mode

Definition [B]

The image data could not be transferred to the memory within 20 seconds in tandem mode.

Possible Causes

• SICU defective

• Printer controlle r defective

• SBU defective

• Interface board defective

SC386, 387: Image Data Transfer Timeout (HDD)

Definition [B]

The image data could not be transferred to the HDD within 15 seconds.

Possible Causes

• SICU defective

• Printer controlle r defective

• SBU defective

• Interface board defective

Trouble-

shooting

7-15

Page 92

SERVICE CALL CONDITIONS 18 July, 2001

SC390: Tandem Image Data Transfer Error

Definition [B]

The image data sent from the master does not match the data received by slave.

Possible Causes

• SICU defective

• Interface board defective

• Electrical noise

SC391, 392: Image Storage Address Error

Definition [B]

The SICU receives an image data output request signal for data that is not stored in memory.

Possible Causes

• SICU defective

SC395: CD-R/RW Control CPU Error

Definition [C] (All copier functions can be used except for “Document Editor”).

The CD-R/RW control CPU on the interface board generates an abnormal signal.

Possible Causes:

• Interface board defective

SC397: CD Access Error

Definition [C] (All copier functions can be used except for “Document Editor”).

The CD-R/RW generates an abnormal signal during data transmittion between the copier HDD and the CD-R/RW.

Possible Causes:

• CD-R/RW defective

• CD-R/RW media defective

SC397: CD-R/RW Data Transmission Error

Definition [C] (All copier functions can be used except for “Document Editor”).

Data transmission between the copier HDD and the CD-R/RW is not completed within 105 seconds.

Possible Causes:

• CD-R/RW defective

• CD-R/RW media defective

7-16

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18 July, 2001 SERVICE CALL CONDITIONS

SC400: Transfer Bias Roller Leak

Definition [B]

Abnormal feedback data from the transfer power pack is detected 6 times consecutively.

Possible Causes

• Transfer power pack defective

• Poor connection between the transfer current terminal and the transfer power

pack.

SC401: Transfer roller open error

Definition [B]

The following conditions are detected at the same time 6 times consecutively.

1) The transfer bias roller feedback data is less than the minimum target.

2) Maximum PWM for the transfer bias roller is applied.

Possible Causes

• Transfer power pack defective

• Poor connection between the transfer current terminal and the transfer power

pack.

SC430: Quenching Lamp Error

Definition [D]

When finishing the process control initial sett ing, the drum pote ntial which is detected by the drum potential sensor is out of the normal range.

Possible Causes

• Quenching lamp defective

• Poor connection between quenching lamp and charge/bias/grid power pack

SC440: Drum Motor Lock

Definition [B]

The drum motor lock signal is longer than 2 seconds while the drum motor is on.

Possible Causes

• Too much load on the drive mechanism

• Drum motor defective

• Poor drum motor connector connection

• BCU defective

Trouble-

shooting

7-17

Page 94

SERVICE CALL CONDITIONS 18 July, 2001

SC441: Development Motor Lock

Definition [B]

The development motor lock signal is longer than 2 seconds while the development motor is on.

Possible Causes

• Too much load on the drive mechanism

• Development motor defective

• Poor development motor connector connection

• BCU defective

SC491: Polygonal Mirror Motor Cooling Fan Motor Lock

Definition [B]

The polygonal mirror motor cooling fan motor lock signal is longer than 5 seconds while the polygonal mirror motor cooling fan motor is on.

Possible Causes

• Too much load on the drive mechanism

• Polygonal mirror motor cooling fan motor defective

SC495: Toner Bottle Unit Error

Definition [B]

The toner hopper sensor cannot detect toner even if the toner supply coil clutch turns on for 2 seconds x 10 times during toner supply during copying.

Possible Causes

• Toner supply motor defective

• Toner supply coil clutch defective

• Toner supply motor connector connection

• Toner supply coil clutch connector connection

• Toner near-end sensor (in the toner bank) defective

• Toner hopper sensor defective

• Toner clogged in the supply system

SC496: Toner Collection Bottle Error

Definition [B]

The used toner collection bottle or sucked toner collection bottle sensor remains off for 3 seconds.

Possible Causes

• Used toner collection bottle or sucked toner collection bottle is incorrectly set

• Used toner collection bottle or sucked toner collection bottle connector is

loose or sensor defective

7-18

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18 July, 2001 SERVICE CALL CONDITIONS

SC501: 1st Tray Lift Malfunction

Definition [C]

One of the following conditions is detected in the 1st tray.

1) The 1st lift sensor is not activated for 10 seconds after the tray lift motor turned on.

2) The 1st lift sensor is already activated when the 1st tray is placed in the machine.

Possible Causes

• 1st lift sensor defective

• 1st tray lift motor defective

• Poor 1st pick-up solenoid connection

• Poor 1st tray lift motor connection

SC502: 2nd Tray Lift Malfunction

Definition [C]

One of the following conditions is detected in the 2nd tray.

1) The 2nd lift sensor is not activated for 10 seconds after the tray lift motor turned on.

2) The 2nd lift sensor is already activated when the 2nd tray is placed in the machine.

Possible Causes

• 2nd lift sensor defective

• 2nd tray lift motor defective

• Poor 2nd pick-up solenoid connection

• Poor 2nd tray lift motor connection

SC503: 3rd Tray Lift Malfunction

Definition [C]

One of the following conditions is detected in the 3rd tray.

1) The 3rd lift sensor is not activated for 10 seconds after the tray lift motor turned on.

2) The 3rd lift sensor is already activated when the 3rd tray is placed in the machine.

Possible Causes

• 3rd lift sensor defective

• 3rd tray lift motor defective

• Poor 3rd pick-up solenoid connection

• Poor 3rd tray lift motor connection

Trouble-

shooting

7-19

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SERVICE CALL CONDITIONS 18 July, 2001

SC504: LCT 1st Tray Lift Malfunction

Definition [C]

One of the following conditions is detected in the LCT 1st tray.

1) The LCT 1st lift sensor is not activated for 10 seconds after the tray lift motor turned on.

2) The LCT 1st lift sensor is already activated when the LCT 1st tray is placed in the machine.

Possible Causes

• LCT 1st lift sensor defective

• LCT 1st tray lift motor defective

• Poor LCT 1st pick-up solenoid connection

• Poor LCT 1st tray lift motor connection

SC505: LCT 2nd Tray Lift Malfunction

Definition [C]

One of the following conditions is detected in the LCT 2nd tray.

1) The LCT 2nd lift sensor is not activated for 10 seconds after the tray lift motor turned on.

2) The LCT 2nd lift sensor is already activated when the LCT 2nd tray is placed in the machine.

Possible Causes

• LCT 2nd lift sensor defective

• LCT 2nd tray lift motor defective

• Poor LCT 2nd pick-up solenoid connection

• Poor LCT 2nd tray lift motor connection

SC506: LCT 3rd Tray Lift Malfunction

Definition [C]

One of the following conditions is detected in the LCT 3rd tray.

1) The LCT 3rd lift sensor is not activated for 10 seconds after the tray lift motor turned on.

2) The LCT 3rd lift sensor is already activated when the LCT 3rd tray is placed in the machine.

Possible Causes

• LCT 3rd lift sensor defective

• LCT 3rd tray lift motor defective

• Poor LCT 3rd pick-up solenoid connection

• Poor LCT 3rd tray lift motor connection

7-20

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18 July, 2001 SERVICE CALL CONDITIONS

SC510: Paper Feed Motor Lock

Definition [B]

A paper feed motor lock signal is detected for more than 50 ms during rotation.

Possible Causes

• Paper feed motor defective

• Too much load on the drive mechanism

• Poor paper feed motor connector connection

SC511: LCT Motor Lock (Optional LCT)

Definition [B]

An LCT motor lock signal is detected for more than 50 ms during rotation.

Possible Causes

• LCT motor defective

• Too much load on the drive mechanism

• Poor LCT motor connector connection

SC515: Tandem Rear Fence Drive Motor Error

Definition [C]

One of the following conditions is detected in the tandem tray.

1) The rear fence return sensor and the rear fence HP sensor are on at the same time.

2) It takes 10 seconds or more for the rear fence return sensor to detect the on condition after the rear fence drive motor starts.

3) It takes 10 seconds or more for the rear fence HP sensor to detect the on condition after this fence starts moving to the home position.

Possible Causes

• Rear fence drive motor defective

• Too much load on the drive mechanism

• Poor motor connector connection

SC520: Jogger Motor Error 1

Definition [C]

When the jogger fence moves to the home position, the jogger HP sensor does not turn on even if the jogger fence motor has moved the jogger fence 153.5 mm.

Trouble-

shooting

Possible Causes

• Jogger fence motor defective

• Too much load on the drive mechanism

• Poor motor connector connection

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SERVICE CALL CONDITIONS 18 July, 2001

SC521: Duplex Jogger Motor Error 2

Definition [C]

When the jogger fence moves from the home position, the jogger fence HP sensor does not turn off even if the jogger motor has moved the jogger fence

153.5 mm.

Possible Causes

• Jogger fence motor defective

• Too much load on the drive mechanism

• Poor motor connector connection

SC531: Fusing/Duplex Motor Lock

Definition [B]

A fusing/duplex motor lock signal is detected for more than 2 seconds during rotation.

Possible Causes

• Fusing/duplex motor defective

• Too much load on the drive mechanism

• Poor fusing/duplex motor connector connection

• BCU defective

• Front door safety switches defective

SC532: Relay Motor Lock

Definition [C]

A relay motor lock signal is detected for more than 2 seconds during rotation.

Possible Causes

• Relay moto r defective

• Too much load on the drive mechanism

• Poor relay motor connector connection

• BCU defective

SC541: Fusing Thermistor Open

Definition [A]

The fusing temperature detected by the thermistor was below 7°C for 15 seconds.

Possible Causes

• Fusing thermistor defective or out of position

• Poor thermistor terminal connection

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18 July, 2001 SERVICE CALL CONDITIONS

SC542: Fusing Temperature Warming-up Error

Definition [A]

The fusing temperature does not reach the fusing standby temperature within 6 minutes after the main power switch is turned on, or after the front doors are closed.

Possible Causes

• Fusing thermistor defective or out of position

• Fusing lamp open

• Fusing thermofuse open

• BCU defective

• AC drive board defective

• Poor fusing unit connection

SC543: Fusing Overheat Error 1

Definition [A]

A fusing temperature of over 220°C is detected for 5 seconds by the fusing thermistor.

Possible Causes

• Fusing thermistor defective

• BCU defective

SC544: Fusing Overheat Error 2

Definition [A]

The fusing temperature monitor i ng circ uit defects ab nor m al fusing tem per at ur e.

Possible Causes

• Fusing thermistor defective

• BCU defective

SC545: Fusing Overheat Error 3

Definition [A]

The fusing lamp stays on at full power for 45 seconds while in the stand-by condition after warming-up is completed.

Possible Causes

• Fusing thermistor out of position

Trouble-

shooting

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SERVICE CALL CONDITIONS 18 July, 2001

SC546: Fusing Ready Temperature Malfunction

Definition [A]

The fusing temperature twice consecutively is detected 20°C lower or 20°C higher than the temperature 1 second earlier.

Possible Causes

• Poor thermistor connector connection

• Poor fusing unit connection

SC547: Zero Cross Signal Malfunction

Definition [A]

When one of the following conditions is detected 10 times consecutively.

1) More than 66 or fewer than 45 zero-cross signals in 500 ms.

2) An interval between zero-cross signals shorter than 7.5 ms is detected 3 times in 500 ms.

Possible Causes

• Noise on the ac power line

SC550: Oil Supply/Cleaning Web End

Definition [A]

The oil supply/cleaning web end sensor stays on for 500 ms after the oil supply/web end motor starts.

Possible Causes

• Oil supply/cleaning web end

• Oil supply/cleaning web motor defective

SC591: Toner Supply Motor Lock

Definition [B]

The used toner supply motor sensor status or development suction motor sensor does not change for 1 second while the toner supply motor is energized.

Possible Causes

• Used toner supply motor or development suction motor defective

• Used toner supply motor sensor or development suction motor sensor

defective

• BCU defective

7-24

Ricoh af 850 Service Manual s af1085

TABLE OF CONTENTS

OPTION

3,000-SHEET FINISHER (B302)

LCT (B303)

A3/DLT TRAY KIT (B331)

4. SERVICE TABLES

4.1 GENERAL CAUTIONS

4.1.1 DRUM

4.1.2 DRUM UNIT

4.1.3 TRANSFER BELT UNIT

4.1.4 SCANNER UNIT

4.1.5 LASER UNIT

4.1.6 CHARGE CORONA

4.1.7 DEVELOPMENT

4.1.8 CLEANING

4.1.9 FUSING UNIT

4.1.10 PAPER FEED

4.1.11 USED TONER

4.2 SERVICE PROGRAM MODE

4.2.1 SERVICE PROGRAM MODE OPERATION

Service Program Access Procedure

Accessing Copy Mode from within an SP Mode

Selecting the Program Number

Inputting a Value or Setting for an SP Mode

4.2.2 SERVICE PROGRAM MODE TABLES

5. PREVENTIVE MAINTENANCE SCHEDULE

5.1 PM PARTS

7. TROUBLESHOOTING

7.1 SERVICE CALL CONDITIONS

7.1.1 SUMMARY

7.1.2 SC CODE DESCRIPTIONS

SC101: Exposure Lamp Error

SC120: Scanner Home Position Error 1

SC121: Scanner Home Position Error 2

SC124: Scanner Motor Error 1

SC125: Scanner Motor Error 2

SC126: Scanner Motor Error 3

SC127: Scanner Motor Error 4

SC128: Scanner Motor Error 5

SC129: Scanner Motor Error 6

SC130: SBU Error

SC300: Charge Corona Output Error 1

SC301: Charge Corona Output Error 2

SC303: Charge Grid Output Error 1

SC304: Charge Grid Output Error 2

SC305: Charge Corona Wire Cleaner Error 1

SC306: Charge Corona Wire Cleaner Error 2

SC310: Drum Potential Sensor Error 1

SC311: Drum Potential Sensor Error 2

SC312: Drum Potential Sensor Error 3

SC313: Drum Potential Sensor Error 4

SC314: Drum Potential Sensor Error 5

SC315: Drum Potential Sensor Error 6

SC316: Drum Potential Sensor Error 7

SC321: Laser Writing Signal (F-gate) Error

SC322: Laser Synchronization Error

SC323: Excessive LD Drive Current

SC335: Polygonal Mirror Motor Error 1

SC336: Polygonal Mirror Motor Error 2

SC337: Polygonal Mirror Motor Error 3

SC338: Polygonal Mirror Motor Error 4

SC340: TD Sensor Error 1

SC341: TD Sensor Error 2

SC342: TD Sensor Error 3

SC345: Development Bias Leak

SC350: ID Sensor Error 1

SC351: ID Sensor Error 2

SC352: ID Sensor Error 3

SC353: ID Sensor Error 4

SC354: ID Sensor Error 5

SC355: ID Sensor Voltage Error

SC360: Hard Disk Drive Error 1

SC361: Hard Disk Drive Error 2

SC362: Hard Disk Drive Error 3

SC363: Hard Disk Drive Error 4

SC364: Hard Disk Drive Error 5

SC365: Hard Disk Drive Error 6

SC366: Hard Disk Drive Error 7

SC367: Hard Disk Drive Error 8