Ricoh Aficio MP 2550B User manual

D017/D018/D019/D020
SERVICE MANUAL
003320MIU

D017/D018/D019/D020
SERVICE MANUAL

D017/D018/D019/D020
SERVICE MANUAL
003320MIU

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within this document to maintain a level of confidentiality that is in the best
interest of Ricoh Americas Corporation and its member companies.
NO PART OF THIS DOCUMENT MAY BE REPRODUCED IN ANY
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PERMISSION OF RICOH AMERICAS CORPORATION.
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They are used throughout this book in an informational or editorial fashion
only and for the benefit of such companies. No such use, or the use of
any trade name, or web site is intended to convey endorsement or other
affiliation with Ricoh products.
©2008 RICOH Americas Corporation. All rights reserved.

The Service Manual contains information
regarding service techniques, procedures,
processes and spare parts of office equipment
distributed by Ricoh Americas Corporation.
Users of this manual should be either service
trained or certified by successfully completing a
Ricoh Technical Training Program.
Untrained and uncertified users utilizing
information contained in this service manual to
repair or modify Ricoh equipment risk personal
injury, damage to property or loss of warranty
protection.
Ricoh Americas Corporation
WARNING

LEGEND
COMPANYPRODUCT
CODE GESTETNER LANIER RICOH SAVIN
D017 MP 2550B LD425B Aficio MP2550B 9025B
D018 MP 2550SP LD425SP Aficio MP2550SP 9025SP
D019 MP 3350B LD433B Aficio MP 3350B 9033B
D020 MP 3350SP LD433SP Aficio MP 3350SP 9033bSP
DOCUMENTATION HISTORY
REV. NO. DATE COMMENTS
* 01/2008 Original Printing

SM i D017/D018/D019/D020
D017/D018/D019/D020
TABLE OF CONTENTS
INSTALLATION
1. INSTALLATION............................................................................ 1-1
1.1 INSTALLATION REQUIREMENTS ............................................................1-1
1.1.1 ENVIRONMENT ................................................................................1-1
1.1.2 MACHINE LEVEL..............................................................................1-1
1.1.3 MINIMUM SPACE REQUIREMENTS ...............................................1-1
1.1.4 POWER REQUIREMENTS ...............................................................1-2
1.1.5 SYSTEM CONFIGURATION AND OPTIONS ...................................1-3
1.2 COPIER INSTALLATION ...........................................................................1-6
1.2.1 POWER SOCKETS FOR PERIPHERALS ........................................1-6
1.2.2 INSTALLATION FLOW CHART ........................................................1-7
1.2.3 ACCESSORY CHECK ......................................................................1-8
1.2.4 INSTALLATION PROCEDURE .........................................................1-8
Tapes and Retainers.............................................................................1-8
Developer .............................................................................................1-9
Re-assembly.......................................................................................1-11
Toner Bottle ........................................................................................1-12
Emblem, Decals..................................................................................1-13
Completion..........................................................................................1-13
SP Settings .........................................................................................1-14
1.2.5 TRANSPORTING THE MACHINE ..................................................1-15
1.3 PAPER TRAY UNIT (D331)......................................................................1-16
1.3.1 ACCESSORY CHECK ....................................................................1-16
1.3.2 INSTALLATION PROCEDURE .......................................................1-16
SP Settings .........................................................................................1-18
1.4 LCT (B391) ...............................................................................................1-19
1.4.1 ACCESSORY CHECK ....................................................................1-19
1.4.2 INSTALLATION PROCEDURE .......................................................1-19
SP Setting...........................................................................................1-22
1.5 ARDF (D366)............................................................................................1-23
1.5.1 COMPONENT CHECK....................................................................1-23

D017/D018/D019/D020 ii SM
1.5.2 INSTALLATION PROCEDURE .......................................................1-23
1.6 INTERCHANGE UNIT (D371) ..................................................................1-27
1.6.1 COMPONENT CHECK....................................................................1-27
1.6.2 INSTALLATION PROCEDURE .......................................................1-27
1.7 1-BIN TRAY UNIT (D367).........................................................................1-29
1.7.1 COMPONENT CHECK....................................................................1-29
1.7.2 INSTALLATION PROCEDURE .......................................................1-29
1.8 SHIFT TRAY (D385).................................................................................1-33
1.8.1 COMPONENT CHECK....................................................................1-33
1.8.2 INSTALLATION PROCEDURE .......................................................1-33
1.9 BYPASS FEED UNIT (D370) ...................................................................1-36
1.9.1 COMPONENTS CHECK .................................................................1-36
1.9.2 INSTALLATION PROCEDURE .......................................................1-36
1.10 DUPLEX UNIT (D369) ........................................................................1-39
1.10.1 ACCESSORY CHECK...............................................................1-39
1.10.2 INSTALLATION PROCEDURE..................................................1-39
1.11 BRIDGE UNIT (D368).........................................................................1-43
1.11.1 COMPONENT LIST ...................................................................1-43
1.11.2 INSTALLATION PROCEDURE..................................................1-44
1.12 1000-SHEET FINISHER (B408) .........................................................1-45
1.12.1 ACCESSORY CHECK...............................................................1-45
1.12.2 INSTALLATION PROCEDURE..................................................1-46
1.13 1000-SHEET BOOKLET FINISHER (B793) .......................................1-48
1.13.1 ACCESSORY CHECK...............................................................1-48
1.13.2 INSTALLATION PROCEDURE..................................................1-49
1.14 500-SHEET FINISHER (D372) ...........................................................1-53
1.14.1 ACCESSORY CHECK...............................................................1-53
1.14.2 INSTALLATION PROCEDURE..................................................1-53
1.15 PLATEN COVER (B406) ....................................................................1-56
1.16 KEY COUNTER (B452) ......................................................................1-57
1.16.1 INSTALLATION PROCEDURE..................................................1-57
1.17 HEATERS...........................................................................................1-59
1.17.1 ANTI-CONDENSATION HEATER (SCANNER UNIT) ...............1-59
Installation Procedure .........................................................................1-59
1.17.2 TRAY HEATER (COPIER).........................................................1-60
1.17.3 TRAY HEATER (OPTIONAL PAPER TRAY UNIT) ...................1-61
1.17.4 TRAY HEATER (OPTIONAL LCT).............................................1-65

SM iii D017/D018/D019/D020
1.18 COPY DATA SECURITY UNIT (B829) ...............................................1-69
1.18.1 ACCESSORIES .........................................................................1-69
1.18.2 INSTALLATION PROCEDURE..................................................1-69
1.19 HARD DISK (D362, ONLY FOR D017/D019) .....................................1-72
1.19.1 ACCESSORY CHECK...............................................................1-72
1.19.2 INSTALLATION .........................................................................1-72
After Installing the HDD ......................................................................1-72
1.20 HDD ENCRYPTION UNIT ..................................................................1-73
1.20.1 INSTALLATION .........................................................................1-73
Seal Check and Removal ...................................................................1-73
Installation Procedure .........................................................................1-73
1.20.2 RECOVERY FROM A DEVICE PROBLEM ...............................1-75
Restoring the encryption key...............................................................1-75
Clearing the NVRAM...........................................................................1-76
1.20.3 MORE ABOUT HDD ENCRYPTION UNIT (D377) ....................1-76
Overview.............................................................................................1-76
Encrypted Data ...................................................................................1-76
Procedure Flow...................................................................................1-77
Encryption Key....................................................................................1-77
Encryption Key Restoration ................................................................1-78
1.21 DATA OVERWRITE SECURITY UNIT (D362) ...................................1-79
1.21.1 BEFORE YOU BEGIN ...............................................................1-79
1.21.2 SEAL CHECK AND REMOVAL .................................................1-80
1.21.3 DOS INSTALLATION.................................................................1-80
1.22 BROWSER UNIT TYPE D (D377) ......................................................1-83
1.22.1 ACCESSORIES .........................................................................1-83
1.22.2 INSTALLATION .........................................................................1-83
1.23 FILE FORMAT CONVERTER TYPE E (D377) ...................................1-84
1.23.1 ACCESSORY CHECK...............................................................1-84
1.23.2 INSTALLATION .........................................................................1-84
1.24 VM CARD TYPE E (D377)..................................................................1-85
1.24.1 ACCESSORIES .........................................................................1-85
1.24.2 INSTALLATION .........................................................................1-85

D017/D018/D019/D020 iv SM
PREVENTIVE MAINTENANCE
2. PREVENTIVE MAINTENANCE.................................................... 2-1
2.1 PM TABLE..................................................................................................2-1
2.2 MAIN MOTOR DRIVE GEAR .....................................................................2-7
REPLACEMENT AND ADJUSTMENT
3. REPLACEMENT AND ADJUSTMENT ........................................ 3-1
3.1 SPECIAL TOOLS AND LUBRICANTS .......................................................3-1
3.1.1 SPECIAL TOOLS ..............................................................................3-1
3.1.2 LUBRICANTS....................................................................................3-1
3.2 GENERAL CAUTIONS ...............................................................................3-2
3.2.1 PCU (PHOTOCONDUCTOR UNIT) ..................................................3-2
3.2.2 TRANSFER ROLLER UNIT...............................................................3-2
3.2.3 SCANNER UNIT................................................................................3-2
3.2.4 LASER UNIT .....................................................................................3-3
3.2.5 FUSING UNIT....................................................................................3-3
3.2.6 PAPER FEED....................................................................................3-3
3.2.7 OTHERS............................................................................................3-3
3.3 SCANNER UNIT.........................................................................................3-4
3.3.1 EXPOSURE GLASS..........................................................................3-4
3.3.2 ORIGINAL LENGTH/WIDTH SENSORS...........................................3-4
3.3.3 EXPOSURE LAMP............................................................................3-5
Reassembling .......................................................................................3-7
3.3.4 SCANNER MOTOR...........................................................................3-8
3.3.5 SENSOR BOARD UNIT (SBU)..........................................................3-8
Monochrome Scanner Unit ...................................................................3-8
Color Scanner Unit................................................................................3-9
When reassembling ............................................................................3-10
3.3.6 EXPOSURE LAMP STABILIZER ....................................................3-10
3.3.7 FRONT SCANNER WIRE ...............................................................3-11
Reinstalling the Front Scanner Wire ...................................................3-11
3.3.8 REAR SCANNER WIRE..................................................................3-14
Reinstalling the Rear Scanner Wire ....................................................3-14
3.3.9 TOUCH PANEL POSITION ADJUSTMENT....................................3-15

SM v D017/D018/D019/D020
3.4 LASER UNIT ............................................................................................3-16
3.4.1 CAUTION DECAL LOCATIONS......................................................3-16
3.4.2 LASER UNIT ...................................................................................3-16
3.4.3 POLYGON MIRROR MOTOR .........................................................3-19
3.4.4 LD UNIT ..........................................................................................3-19
3.4.5 LASER SYNCHRONIZATION DETECTOR.....................................3-20
3.5 PHOTOCONDUCTOR UNIT (PCU) .........................................................3-21
3.5.1 PCU REMOVAL ..............................................................................3-21
3.5.2 PICK-OFF PAWLS ..........................................................................3-22
3.5.3 OPC DRUM .....................................................................................3-22
3.5.4 CHARGE ROLLER, CLEANING ROLLER ......................................3-23
3.5.5 CLEANING BLADE .........................................................................3-24
3.5.6 DEVELOPER...................................................................................3-24
3.5.7 AFTER REPLACEMENT OF PCU COMPONENTS........................3-29
3.6 TRANSFER UNIT.....................................................................................3-31
3.6.1 TRANSFER ROLLER UNIT.............................................................3-31
3.6.2 IMAGE DENSITY SENSOR ............................................................3-32
3.7 FUSING/EXIT ...........................................................................................3-33
3.7.1 FUSING UNIT..................................................................................3-33
3.7.2 THERMISTORS ..............................................................................3-34
3.7.3 THERMOSTATS .............................................................................3-34
3.7.4 HOT ROLLER AND FUSING LAMPS .............................................3-36
3.7.5 PRESSURE ROLLER/CLEANING ROLLER...................................3-38
3.7.6 PAPER EXIT SENSOR/PAPER OVERFLOW SENSOR.................3-39
3.8 PAPER FEED...........................................................................................3-40
3.8.1 FEED ROLLER: TRAY 1 .................................................................3-40
3.8.2 FEED ROLLER: TRAY 2 .................................................................3-41
3.8.3 FRICTION PAD ...............................................................................3-41
3.8.4 PAPER END SENSOR....................................................................3-42
3.8.5 PAPER TRAY LIFT MOTORS.........................................................3-42
3.8.6 REGISTRATION CLUTCH ..............................................................3-43
3.8.7 PAPER FEED CLUTCHES..............................................................3-44
Lower Paper Feed Clutch ...................................................................3-44
Upper Paper Feed Clutch ...................................................................3-44
3.8.8 RELAY CLUTCHES ........................................................................3-45
3.8.9 UPPER/LOWER PAPER SIZE SENSORS......................................3-46
3.8.10 REGISTRATION SENSOR ........................................................3-46

D017/D018/D019/D020 vi SM
3.8.11 UPPER, LOWER RELAY SENSORS ........................................3-49
3.8.12 DUST COLLECTION BIN ..........................................................3-50
3.9 PCBS AND OTHER ITEMS......................................................................3-51
3.9.1 CONTROLLER BOARD ..................................................................3-51
Before replacing the controller board in the model without HDD.........3-51
Replacement Procedure .....................................................................3-51
After installing the controller board......................................................3-53
3.9.2 NVRAM ...........................................................................................3-53
3.9.3 BCU BOARD ...................................................................................3-54
3.9.4 POWER PACK ................................................................................3-55
3.9.5 MAIN MOTOR .................................................................................3-55
3.9.6 PSU .................................................................................................3-56
3.9.7 SIO ..................................................................................................3-57
Monochrome Scanner Unit (D017/D019)............................................3-57
Color Scanner Unit (D018/D020) ........................................................3-57
3.9.8 SIU ..................................................................................................3-58
3.9.9 IPU ..................................................................................................3-58
3.9.10 HDD ...........................................................................................3-59
3.10 COPY ADJUSTMENTS: PRINTING/SCANNING ...............................3-61
3.10.1 PRINTING..................................................................................3-61
Registration - Leading Edge/Side-to-Side...........................................3-61
Blank Margin.......................................................................................3-62
Main Scan Magnification.....................................................................3-63
Parallelogram Image Adjustment ........................................................3-64
3.10.2 SCANNING ................................................................................3-65
Registration: Platen Mode...................................................................3-65
Magnification.......................................................................................3-65
3.10.3 ADF IMAGE ADJUSTMENT ......................................................3-66
Registration.........................................................................................3-66
Sub Scan Magnification ......................................................................3-67
3.10.4 TOUCH SCREEN CALIBRATION .............................................3-67
TROUBLESHOOTING
4. TROUBLESHOOTING ................................................................. 4-1
4.1 SERVICE CALL CONDITIONS ..................................................................4-1
4.1.1 SUMMARY ........................................................................................4-1

SM vii D017/D018/D019/D020
4.1.2 SC CODE DESCRIPTIONS ..............................................................4-2
4.2 SELF-DIAGNOSTIC MODE .....................................................................4-35
4.2.1 SELF-DIAGNOSTIC MODE AT POWER ON..................................4-35
Self-Diagnostic Test Flow Chart..........................................................4-36
4.2.2 DETAILED SELF-DIAGNOSTIC MODE..........................................4-37
Purpose ..............................................................................................4-37
Executing Detailed Self-Diagnosis ......................................................4-37
4.3 PAPER FEED TROUBLESHOOTING ......................................................4-39
4.4 SKEWED IMAGE......................................................................................4-40
4.5 IMAGE PROBLEMS .................................................................................4-41
4.5.1 SKEWED, TRAPEZOID AND PARALLELOGRAM IMAGES...........4-41
Skewed Images ..................................................................................4-41
Trapezoid Images ...............................................................................4-42
Parallelogram Images .........................................................................4-43
4.5.2 CHECKING IMAGES WITH THE TRIMMING PATTERN................4-44
4.5.3 CORRECTING THE IMAGES .........................................................4-45
Correcting Skewed Images.................................................................4-45
Correcting Trapezoid Images..............................................................4-49
Correcting Parallelogram Images........................................................4-50
4.6 ELECTRICAL COMPONENT DEFECTS..................................................4-51
4.6.1 SENSORS .......................................................................................4-51
4.6.2 SWITCHES......................................................................................4-58
4.7 BLOWN FUSE CONDITIONS ..................................................................4-59
SERVICE TABLES
5. SERVICE TABLES....................................................................... 5-1
5.1 SERVICE PROGRAM MODE.....................................................................5-1
5.1.1 SERVICE MODE LOCK/UNLOCK ....................................................5-1
5.1.2 SERVICE PROGRAM MODE OPERATION......................................5-1
Overview...............................................................................................5-1
Entering and Exiting SP mode ..............................................................5-2
SP Mode Button Summary ...................................................................5-2
Switching Between SP Mode and Copy Mode for Test Printing............5-3
Selecting the Program Number.............................................................5-3
5.1.3 COMMONLY USED SP CODES AND FEATURES ..........................5-4
Test Pattern Printing (SP2902) .............................................................5-5

D017/D018/D019/D020 viii SM
SMC Data Lists (SP5990).....................................................................5-6
Memory All Clear (SP5801) ..................................................................5-7
APS Output Display (SP4301) ..............................................................5-9
Nip Band Width Measurement (SP1109) ............................................5-10
Software Reset ...................................................................................5-10
System Setting Reset .........................................................................5-11
Copier Setting Reset...........................................................................5-11
5.1.4 SERVICE PROGRAM MODE TABLES...........................................5-12
Service Table Key...............................................................................5-12
5.2 SP1XXX: FEED ........................................................................................5-13
5.3 SP2XXX: DRUM.......................................................................................5-21
5.4 SP3XXX....................................................................................................5-40
5.5 SP4XXX: SCANNER ................................................................................5-41
5.6 SP5XXX: MODE.......................................................................................5-70
5.7 SP6XXX: PERIPHERALS.......................................................................5-139
5.8 SP7XXX: DATA LOG..............................................................................5-157
5.9 SP8XXX: DATA LOG 2...........................................................................5-169
5.10 FIRMWARE UPDATE.......................................................................5-213
5.11 USER TOOLS...................................................................................5-214
5.11.1 UP MODE INITIAL SCREEN: USER TOOLS/COUNTER DISPLAY
.................................................................................................5-214
5.11.2 SYSTEM SETTINGS ...............................................................5-214
5.11.3 COPIER/DOCUMENT SERVER FEATURES..........................5-214
5.11.4 PRINTER, FACSIMILE, SCANNER SETTINGS ......................5-215
5.11.5 INQUIRY..................................................................................5-215
5.11.6 COUNTER ...............................................................................5-215
5.12 LED AND DIP SWITCHES ...............................................................5-216
5.12.1 LEDS .......................................................................................5-216
Controller ..........................................................................................5-216
SBCU................................................................................................5-216
5.12.2 DIP SWITCHES .......................................................................5-216
Controller ..........................................................................................5-216
SBCU................................................................................................5-217
5.13 USING THE DEBUG LOG ................................................................5-218
5.13.1 SWITCHING ON AND SETTING UP ‘SAVE DEBUG LOG’.....5-218
5.13.2 RETRIEVING THE DEBUG LOG FROM THE HDD ................5-222
5.13.3 RECORDING ERRORS MANUALLY ......................................5-222