Accurate, clear and concise text, combined with detailed illustrations and photos, lists of error code, instruction and diagrams, guide you through procedure of repair, remediate, maintenance and adjustments your copier, printer or scanner.
Present field service manual Konica Minolta Bizhub C25 contain clear instructions and procedures on how to fix the problems occurring in your equipment.
The information contained in this repair manual is necessary for the repair, but also prevention, resulting in a longer life of your equipment.
Format of the manual: PDF, makes it easy to navigate, instant download and print. English language.
To see what contain, please read table of contents:
OUTLINE
1. SYSTEM CONFIGURATION
2. PRODUCT SPECIFICATIONS
2.1 Type
2.2 Functions
2.3 Media
2.4 Machine specifications
2.5 Operating environment
2.6 Print functions
2.7 Scan functions
2.8 Fax functions
MAINTENANCE
3. PERIODICAL MAINTENANCE ITEM
3.1 Periodical replacement parts list (CRU)
3.2 Periodical replacement parts list (FRU)
3.2.1 Main body
3.2.2 Option
3.3 Concept of parts life
4. PERIODICAL MAINTENANCE PROCEDURE
4.1 Processing section
4.1.1 Replacing the toner cartridge (C, M, Y, K)
4.1.2 Replacing the imaging unit (C, M, Y, K)
4.2 Transfer section
4.2.1 Replacing the waste toner bottle
4.2.2 Replacing the transfer roller
4.2.3 Replacing the transfer belt unit
4.3 Fusing section
4.3.1 Replacing the fuser unit
4.4 Feed section
4.4.1 Replacing the tray1 feed roller
4.4.2 Replacing the tray2 feed roller
5. SERVICE TOOL
5.1 Service material list
5.2 CE tool list
6. FIRMWARE UPGRADE
6.1 Controller firmware upgrading (for MFPB/1)
6.1.1 Preparations for firmware upgrading
6.1.2 Upgrading procedure
6.2 PS/PCL firmware upgrading (for MFPB/2)
6.2.1 Preparations for firmware upgrading
6.3 Engine firmware upgrading
6.3.1 Preparations for firmware upgrading
6.3.2 Upgrading procedure
7. OTHER MAINTENANCE ITEM
7.1 Items not allowed to be disassembled and adjusted
7.1.1 PH unit
7.1.2 Fusing unit
7.2 Disassembly/reassembly parts list
7.2.1 Cleaning parts list
7.3 Disassembly/reassembly procedure
7.3.1 Rear cover
7.3.2 Left cover
7.3.3 Rear right cover
7.3.4 Exit cover
7.3.5 Front right cover
7.3.6 Tray2
7.3.7 Tray1
7.3.8 Operation panel
7.3.9 Upper cover
7.3.10 FAX board
7.3.11 MFP board /1(MFPB /1)/ MFP board /2(MFPB /2)
7.3.12 Printer control board (PRCB)
7.3.13 DC power supply (DCPU)
7.3.14 High voltage unit (HV1)
7.3.15 PH Unit
7.3.16 Hard disk kit (HD-P03)
7.3.17 CF adapter (MK-725)
7.3.18 Dual In-Line Memory Module (DIMM)
7.3.19 Developing motor (M1)
7.3.20 Main motor (M2)
7.3.21 Color PC drum motor (M4)
7.3.22 DC power supply fan motor (FM10)
7.3.23 Cooling fan motor (FM11)
7.3.24 Tray2 media feed clutch (CL1) / Tray1 media feed clutch (CL2)
7.3.25 Registration clutch (CL3)
7.3.26 Toner supply clutch/Y (CL4) / Toner supply clutch/M (CL5) /
Toner supply clutch/C (CL6) / Toner supply clutch/K (CL7)
7.3.27 Loop detection clutch (CL8)
7.3.28 Switchback roller feed clutch (CL11) / Switchback roller reverse clutch (CL12)
7.3.29 Duplex conveyance roller clutch (CL13)
7.3.30 Installation of the duplex conveyance roller clutch (CL13)
7.3.31 2nd transfer release solenoid (SD2)
7.3.32 Temperature/ humidity sensor (TEM/HUMS)
7.3.33 IDC sensor (IDC)
7.3.34 Scanner motor (M101)
7.3.35 CIS module
7.3.36 Scanner unit
7.3.37 ADF
7.3.38 ADF pick-up roller / ADF feed roller
7.3.39 ADF separation pad
7.4 Cleaning procedure
7.4.1 Tray1 feed roller
7.4.2 Tray2 feed roller
7.4.3 ADF feed roller
7.4.4 Laser irradiation section
ADJUSTMENT/SETTING
8. HOW TO USE THE ADJUSTMENT/SETTING
SECTION109
9. UTILITY
9.1 List of UTILITY mode
9.2 Starting/Exiting
9.2.1 Starting procedure
9.2.2 Exiting procedure
10. REPORT/STATUS
10.1 List of REPORT/STATUS mode
10.2 Starting/Exiting
10.2.1 Starting procedure
10.2.2 Exiting procedure
10.3 CONFIGURATION PAGE
10.3.1 Sample of CONFIGURATION PAGE
11. PS/PCL PRINT
11.1 List of PS/PCL PRINT mode
12. USER SERVICE MODE
12.1 List of USER SERVICE MODE
12.2 Starting/Exiting
13. SERVICE MODE
13.1 LIST OF SERVICE MODE
13.2 STARTING/EXITING
13.2.1 STARTING PROCEDURE
13.3 SERVICE’S CHOICE
13.3.1 TX SPEED
13.3.2 RX SPEED
13.3.3 TX LEVEL
13.3.4 RX LEVEL
13.3.5 DTMF LEVEL
13.3.6 CNG LEVEL
13.3.7 CED LEVEL
13.3.8 ECM MODE
13.3.9 CODING SCHEME
13.3.10 TONER EMPTY REPORT
13.3.11 PROTOCOL REPORT
13.3.12 PC FAX TIMEOUT
13.3.13 TWAIN TIMEOUT
13.3.14 SLEEP OFF
13.3.15 ENABLE WARNING – TONER LOW
13.3.16 ENABLE WARNING – I-UNIT LOW
13.3.17 ENABLE WARNING – WASTE NEAR FULL
13.3.18 DETECT DIAL TONE
13.3.19 COUNT MODE – COUNT MODE
13.3.20 COUNT MODE – LARGE PAPER MODE
13.3.21 MANUAL INPUT DEST
13.4 ADJUST
13.4.1 CIS MAIN ZOOM
13.4.2 CIS SUB ZOOM
13.4.3 CIS MAIN REGIST
13.4.4 CIS SUB REGIST
13.4.5 ADF SUB ZOOM
13.4.6 ADF MAIN REGIST
13.4.7 ADF SUB REGIST
13.4.8 FUSER CONTROL
13.4.9 TOP ADJ (FRONT)
13.4.10 LEFT ADJ. (FRONT)
13.4.11 LEFT ADJ. (BACK)
13.4.12 TRANSFER POWER- SIMPLEX PASS
13.4.13 TRANSFER POWER- DUPLEX PASS
13.4.14 IMAGE ADJ PARAM
13.4.15 TEMPERATURE
13.4.16 MAIN SCAN SCALE – MAIN SCAN PAGE
13.4.17 MAIN SCAN SCALE – SCAN ADJUST VALUE
13.4.18 AIDC MODE
13.4.19 THICK MODE
13.4.20 FINE LINE ADJ
13.4.21 IU YIELD SETTINGS
13.4.22 SUPPLIES REPLACE – TRANSFER BELT
13.4.23 SUPPLIES REPLACE – FUSER UNIT
13.4.24 SUPPLIES REPLACE – TRANSFER ROLLER
13.4.25 BK CLEAR
13.5 COUNTER
13.5.1 TOTAL PRINT
13.5.2 FAX COUNTER
13.5.3 SCAN COUNTER
13.5.4 TRAY COUNTER
13.5.5 PAPER SIZE COUNTER
13.5.6 PAPER TYPE COUNTER
13.5.7 APPLICATION COUNTER
13.5.8 SUPPLIES STATUS
13.5.9 CRU USAGE
13.5.10 JAM COUNTER
13.5.11 TROUBLE COUNTER
13.5.12 TOTAL SCAN
13.6 DISPLAY
13.6.1 MAIN F/W VER
13.6.2 ENGINE F/W VER
13.6.3 MAIN RAM SIZE
13.6.4 SERIAL NO
13.6.5 PP F/W VER
13.6.6 PP BOOT VER
13.6.7 PRINTER RAM SIZE
13.6.8 HARD DISK
13.6.9 CARD
13.6.10 CPLD VER
13.7 FUNCTION
13.7.1 PAPER FEED TEST
13.7.2 PRN TEST PATTERN
13.7.3 ADF FEED TEST
13.7.4 COPY ADF GLASS
13.7.5 FAX RES. COPY TEST
13.7.6 SCAN TEST
13.7.7 PRINTER TEST- SENSOR
13.7.8 PRINTER TEST- ELECTRIC PARTS
13.7.9 PRINTER TEST- PRINT TEST
13.7.10 ADF TEST- SENSOR
13.7.11 ADF TEST- ELECTRIC PARTS
13.8 SOFT SWITCH
13.8.1 CONTROLLER SW
13.8.2 ENGINE SW
13.9 REPORT
13.9.1 SERVICE DATA LIST
13.9.2 ERROR CODE LIST
13.9.3 T.30 PROTOCOL LIST
13.9.4 SERVICE REPORT
13.10 ADMIN REGISTRATION
13.10.1 ADMIN. NO
13.10.2 FULL – FUNC. NO
13.11 FIXED ZOOM CHANGE
13.12 FACTORY TEST
13.13 CLEAR DATA
13.13.1 SRAM CLEAR
13.13.2 MEMORY CLEAR
13.14 PS/PCL
13.14.1 PRINT MENU – MAINTENANCE INFO
13.14.2 PRINT MENU – EVENT LOG
13.14.3 PRINT MENU – ELEMENT PAGE
13.14.4 PRINT MENU – HALFTONE 64
13.14.5 PRINT MENU – HALFTONE 128
13.14.6 PRINT MENU – HALFTONE 256
13.14.7 PRINT MENU – GRADATION
13.14.8 IMG ADJ THICK
13.14.9 IMG ADJ BLACK
13.14.10 SOFT SWITCH
13.15 CS REMOTE CARE
13.15.1 OUTLINES
13.15.2 SETTING UP THE CS REMOTE CARE
13.15.3 SERVICE ENGR ID
13.15.4 SUBSCRIBE
13.15.5 MAINTENANCE START
13.15.6 MAINTENANCE END
13.15.7 MANUAL TRANS
13.15.8 BASIC SETTINGS – CENTER ID
13.15.9 BASIC SETTINGS – WEB SERVER
13.15.10 BASIC SETTINGS – ENCRYPTION
13.15.11 BASIC SETTINGS – COMM. METHOD
13.15.12 WEBDAV SETTINGS – ENABLE PROXY
13.15.13 WEBDAV SETTINGS – PROXY ADDRESS
13.15.14 WEBDAV SETTINGS – PROXY PORT
13.15.15 WEBDAV SETTINGS – PROXY USER NAME
13.15.16 WEBDAV SETTINGS – PROXY PASSWORD
13.15.17 WEBDAV SETTINGS – ENABLE SSL
13.15.18 WEBDAV SETTINGS – WEBDAV AUTH
13.15.19 WEBDAV SETTINGS – WEBDAV USER NAME
13.15.20 WEBDAV SETTINGS – WEBDAV PASSWORD
13.15.21 CSRC CLOCK
13.15.22 CSRC SETTINGS
13.15.23 HEARTBEAT SETTING
13.15.24 SWITCHES SETTINGS
13.15.25 PERIODIC TRANS
13.15.26 FIXED DATE TRANS
13.15.27 REPORT SETTING
13.15.28 RAM CLEAR
14. SOFT SWITCH SET
14.1 Description
14.2 Default setting
14.2.1 Country for each marketing area
14.2.2 Soft switch list
14.2.3 Default soft switch setting for each market area
14.3 Soft switch definition
14.3.1 SOFT SWITCH: #01
14.3.2 SOFT SWITCH: #02
14.3.3 SOFT SWITCH: #03
14.3.4 SOFT SWITCH: #04
14.3.5 SOFT SWITCH: #05
14.3.6 SOFT SWITCH: #06
14.3.7 SOFT SWITCH: #07
14.3.8 SOFT SWITCH: #08
14.3.9 SOFT SWITCH: #09
14.3.10 SOFT SWITCH: #10
14.3.11 SOFT SWITCH: #11
14.3.12 SOFT SWITCH: #12
14.3.13 SOFT SWITCH: #13
14.3.14 SOFT SWITCH: #14
14.3.15 SOFT SWITCH: #15
14.3.16 SOFT SWITCH: #16
14.3.17 SOFT SWITCH: #17
14.3.18 SOFT SWITCH: #18
14.3.19 SOFT SWITCH: #19
14.3.20 SOFT SWITCH: #20
14.3.21 SOFT SWITCH: #21
14.3.22 SOFT SWITCH: #22
14.3.23 SOFT SWITCH: #23
14.3.24 SOFT SWITCH: #24 (Part 1)
14.3.25 SOFT SWITCH: #24 (Part 2)
14.3.26 SOFT SWITCH: #24 (Part 3)
14.3.27 SOFT SWITCH: #25
14.3.28 SOFT SWITCH: #26
14.3.29 SOFT SWITCH: #27
14.3.30 SOFT SWITCH: #28
14.3.31 SOFT SWITCH: #29
14.3.32 SOFT SWITCH: #30
14.3.33 SOFT SWITCH: #31
14.3.34 SOFT SWITCH: #32
14.3.35 SOFT SWITCH: #33
14.3.36 SOFT SWITCH: #34
14.3.37 SOFT SWITCH: #35
14.3.38 SOFT SWITCH: #36
14.3.39 SOFT SWITCH: #37
14.3.40 SOFT SWITCH: #38
14.3.41 SOFT SWITCH: #39
14.3.42 SOFT SWITCH: #40
14.3.43 SOFT SWITCH: #41
14.3.44 SOFT SWITCH: #42
14.3.45 SOFT SWITCH: #43
14.3.46 SOFT SWITCH: #44
14.3.47 SOFT SWITCH: #45
14.3.48 SOFT SWITCH: #46
14.3.49 SOFT SWITCH: #47
14.3.50 SOFT SWITCH: #48
14.3.51 SOFT SWITCH: #49
14.3.52 SOFT SWITCH: #50
14.3.53 SOFT SWITCH: #51
14.3.54 SOFT SWITCH: #52
14.3.55 SOFT SWITCH: #53
14.3.56 SOFT SWITCH: #54
14.3.57 SOFT SWITCH: #55
14.3.58 SOFT SWITCH: #56
14.3.59 SOFT SWITCH: #57
14.3.60 SOFT SWITCH: #58
14.3.61 SOFT SWITCH: #59 (Part 1)
14.3.62 SOFT SWITCH: #59 (Part 2)
14.3.63 SOFT SWITCH: #59 (Part 3)
14.3.64 SOFT SWITCH: #60
14.3.65 SOFT SWITCH: #61
14.3.66 SOFT SWITCH: #62
14.3.67 SOFT SWITCH: #63
14.3.68 SOFT SWITCH: #64
15. FAX PROTOCOLS
15.1 G3 ECM (G3 Error Correction Mode)
15.2 Line control
15.2.1 Procedure of G3 mode communication
15.3 Table of reference code
15.4 How to analyze the T30 protocol monitor
TROUBLESHOOTING
16. JAM DISPLAY
16.1 List of JAM display
16.1.1 JAM display resetting procedure
16.2 Sensor layout
16.3 Solution
16.3.1 Initial check items
16.3.2 Misfeed at tray 2 paper feed section
16.3.3 Misfeed at tray 3 paper feed section
16.3.4 Misfeed at fusing/paper exit section
16.3.5 Misfeed at transfer section
16.3.6 Misfeed at tray 3 vertical conveyance section
16.3.7 Misfeed at duplex paper feed section
16.3.8 Misfeed at duplex paper transport section
16.3.9 Misfeed at tray1 paper feed section
16.3.10 Misfeed at ADF section
16.3.11 Controller JAM
17. PROCESS CAUTION INFROMATION
17.1 Display procedure
17.2 List
17.3 Solution
17.3.1 Temperature/ humidity sensor failure
17.3.2 IDC sensor failure
17.3.3 Color regist test pattern failure
17.3.4 Color regist adjust failure
18. MALFUNCTION CODE
18.1 Trouble code (Service Call)
18.2 List
18.3 Trouble resetting procedure
18.4 Solution
18.4.1 0010: Color PC drum motor malfunction
18.4.2 0017: Main motor malfunction
18.4.3 0018: Developing motor malfunction
18.4.4 004A: Cooling fan motor malfunction
18.4.5 004E: DC power supply fan motor malfunction
18.4.6 0062: Tray 3 media feed motor malfunction
18.4.7 0094: 2nd image transfer pressure/retraction failure
18.4.8 0096: 1st image transfer pressure/retraction failure
18.4.9 0300: Polygon motor malfunction
18.4.10 0310: Laser malfunction
18.4.11 0500: Heating roller warm-up failure
18.4.12 0502: Thermistor open-circuit failure
18.4.13 0503: Thermistor resistance failure
18.4.14 0510: Abnormally low heating roller temperature
18.4.15 0520: Abnormally high heating roller temperature
18.4.16 0650: Scanner home sensor abnormalities
18.4.17 0F52: Toner level sensor/Y malfunction
18.4.18 0F53: Toner level sensor/M malfunction
18.4.19 0F54: Toner level sensor/C malfunction
18.4.20 0F55: Toner level sensor/K malfunction
18.4.21 1038: Engine connect error
18.4.22 133C: Modem abnormalities
18.4.23 13DD: Backup data error
18.4.24 13E2: Engine flash ROM write error
18.4.25 13E3: Engine flash ROM device fault
18.4.26 13F0: Engine control failure
18.4.27 14A3: IR lamp malfunction
18.4.28 3FFF: Flash ROM write error
18.4.29 4FFF: Controller connect error
18.4.30 C002: RAM error at startup (standard memory)
18.4.31 C003: RAM error at startup (expanded memory)
18.4.32 C013: MAC address error at startup
18.4.33 C015: BOOT ROM error at startup
18.4.34 C025: Controller ROM error (Configuration information error)
18.4.35 C026: Controller ROM error (Access error)
18.4.36 C027: Controller ROM error (Data error)
18.4.37 C050: HDD access error
18.4.38 C051: HDD full error
18.4.39 C052: Compact flash access error
18.4.40 C053: Compact flash full error
18.4.41 C060: Firmware update error
18.4.42 FFFF: Interface communication error
19. POWER SUPPLY TROUBLE
19.1 Machine is not energized at all (DCPU operation check)
19.2 Control panel indicators do not light
19.3 Fusing heaters do not operate
20. FAX ERROR
20.1 When faxing is not performed correctly
20.1.1 Can not send a fax
20.1.2 Can not receive a fax
20.1.3 Dialing connection problem
20.2 Communication error
20.2.1 Outline
20.2.2 Error occurring during transmission
20.2.3 Error occurring during reception
20.3 Error code list
20.3.1 Reception
20.3.2 Transmission
20.4 Error codes and corresponding solution
20.4.1 Reception error code (0001-0072)
20.4.2 Transmission error code (0080-00FF)
20.5 FAX can sent but not receive
20.6 FAX line says talking
20.7 Pick up the phone, but the machine does not go into Off-Hook state
20.8 In VoIP system environment, the machine can not fax properly
21. SCAN ERROR
22. IMAGE QUALITY PROBLEM
22.1 How to identify problematic part
22.1.1 Initial check items
22.2 Solution
22.2.1 Scanner system: white lines, white bands, colored lines and colored bands in sub scan direction
22.2.2 Scanner system: white lines, white bands, colored lines and colored bands in main scan direction
22.2.3 Scanner system: color spots
22.2.4 Scanner system: fog
22.2.5 Scanner system: blurred image, blotchy image
22.2.6 Scanner system: incorrect color image registration, sync shift (lines in main scan direction)
22.2.7 Scanner system: moire
22.2.8 Scanner system: skewed image
22.2.9 Scanner system: distorted image
22.2.10 Scanner system: low image density, rough image
22.2.11 Scanner system: blank copy, black copy
22.2.12 Printer monocolor: white lines, white bands, colored lines and colored bands in sub scan direction
22.2.13 Printer monocolor: white lines, white bands, colored lines and colored bands in main scan direction
22.2.14 Printer monocolor: uneven density in sub scan direction
22.2.15 Printer monocolor: uneven density in main scan direction
22.2.16 Printer monocolor: low image density
22.2.17 Printer monocolor: gradation reproduction failure
22.2.18 Printer monocolor: foggy background
22.2.19 Printer monocolor: void areas, white spots
22.2.20 Printer monocolor: colored spots
22.2.21 Printer monocolor: blurred image
22.2.22 Printer monocolor: blank copy, black copy
22.2.23 Printer monocolor: uneven image
22.2.24 Printer 4-color: white lines, white bands, colored lines and colored bands in sub scan direction
22.2.25 Printer 4-color: white lines, white bands, colored lines and colored bands in main scan direction
22.2.26 Printer 4-color: uneven density in sub scan direction
22.2.27 Printer 4-color: uneven density in main scan direction
22.2.28 Printer 4-color: low image density
22.2.29 Printer 4-color: poor color reproduction
22.2.30 Printer 4-color: incorrect color image registration
22.2.31 Printer 4-color: void areas, white spots
22.2.32 Printer 4-color: colored spots
22.2.33 Printer 4-color: poor fusing performance, offset
22.2.34 Printer 4-color: brush effect, blurred image
22.2.35 Printer 4-color: back marking
22.2.36 Printer 4-color: uneven image
23. IC protector
23.1 Outline
23.2 IC protector list
23.2.1 Main body
23.2.2 Lower feeder unit PF-P09
APPENDIX
24. PARTS LAYOUT DRAWING
24.1 Main body
24.2 ADF
24.3 Lower feeder unit (option)
25. CONNECTOR LAYOUT DRAWING
25.1 Printer control board (PRCB)
25.2 MFP board/1 (MFPB/1)
25.3 MFP board/2 (MFPB/2)
25.4 FAX board (FAXB)
26. CONNECTOR LAYOUT DRAWING
27. TIMING CHART
Number of pages: 456.