Screw Cover Seal
- Disengage the two dowels, then remove the ADF Cover Assy (A).
- Disengage the two dowels, then remove the ASF Cover (A).
- Remove the two Screw Cover Seals (A).
- WF-C878R_WF-C878Ra_RevI
- Product Descriptions
- Configuration
- Name of Each Part
- Motor, Sensor, Clutch, and Solenoid Specifications
- Print Head
- Carriage Mechanism
- Ink Supply Mechanism
- Ink System Mechanism
- Paper Loading/Paper Feed Mechanism
- Scanner/ADF Mechanism
- Installation and Settings
- Overview of Introduction and Installation
- Installation Procedure
- Relocation, Removal
- Overview of Introduction and Installation
- Troubleshooting
- Troubleshooting Workflow
- Troubleshooting
- Normal Errors
- Fatal Errors
- ADF/SCN error
- ADF PID excess speed detection (error code: 100001)
- ADF PID reverse detection (error code: 100002)
- ADF PID lock detection (error code: 100003)
- ADF PID excess load (error code: 100005)
- ADF PID excess time (error code: 100006)
- Home Position Detection Failure (Error code: 100016)
- Contact detection distance exceeded (error code: 100017)
- ALD PID excess speed detection (error code: 100033)
- ALD PID reverse detection (error code: 100034)
- ALD PID lock detection (error code: 100035)
- ALD PID excess load (error code:100037)
- ALD PID excess time (error code: 100038)
- MAIN-B connection error (error code: 100048)
- MAIN-B Firmware version mismatch error (error code: 100050)
- Scanner illegal error (error code: 100053)
- Paper jam error (error code: 100054)
- FB PID excess speed detection (error code: 100065)
- FB PID reverse error (error code: 100066)
- FB PID lock error (error code: 100067)
- FB PID excess load error (error code: 100069)
- FB PID excess time (error code: 100070)
- FB BS+ excess speed detection (error code: 100073)
- FB BS+ reverse error (error code: 100074)
- FB BS+ lock error (error code: 100075)
- FB BS+ excess load (error code: 100077)
- FB BS+ excess time (error code: 100078)
- Main-B board μSD recognition error (error code: 100094)
- CR error
- CR PID driving time error (error code: 000020)
- CR PID excess load error (error code: 000021)
- CR PID excess speed error (error code: 000022)
- CR PID reverse error (error code: 000023)
- CR PID lock error (error code: 000024)
- CR PID underspeed error (error code: 000025)
- CR PID excess load2 error (error code: 000027)
- CR load position driving time error (error code: 000030）
- CR load position excess load error (error code: 000031)
- CR load position excess speed error (error code: 000032)
- CR load position reverse error (error code: 000033)
- APG target position not reached error (error code: 034011)
- PW detector failure error (error code: 034016)
- PW sensor detected foreign object error (error code: 034017)
- PF error
- PF PID riving time error (error code: 000040)
- PF PID excess load error (error code: 000041)
- PF PID excess speed error (error code: 000042)
- PF PID reverse error (error code: 000043)
- PF PID lock error (error code: 000044)
- PF load position driving time error (error code: 000050)
- PF load position excess load error (error code: 000051)
- PF load position excess speed error (error code: 000052)
- PF load position reverse error (error code: 000053)
- SMAP phase detection error (error code: 034012)
- 3rd NIP release sensor failure error (error code: 034018)
- Cassette error
- ASF PID driving time error (error code: 000060)
- ASF PID excess load error (error code: 000061)
- ASF PID excess speed error (error code: 000062)
- ASF PID reverse error (error code: 000063)
- ASF PID lock error (error code: 000064)
- ASF load position driving time error (error code: 000070)
- ASF load position excess load error (error code: 000071)
- ASF load position excess speed error (error code: 000072)
- ASF load position reverse error (error code: 000073)
- Additional cassette error
- 2nd ASF PID driving time error (error code: 000080)
- 2nd ASF PID excess load error (error code: 000081)
- 2nd ASF PID excess speed error (error code: 000082)
- 2nd ASF PID reverse error (error code: 000083)
- 2nd ASF PID lock error (error code: 000084)
- 2nd ASF load position driving time error (error code: 000090)
- 2nd ASF load position excess load error (error code: 000091)
- 2nd ASF load position excess speed error (error code: 000092)
- 2nd ASF load position reverse error (error code: 000093)
- LFT1 PID driving time error (error code: 000160)
- LFT1 PID excess load error (error code: 000161)
- LFT PID excess speed error (error code: 000162)
- LFT1 PID lock error (error code: 000164)
- LFT2 PID driving time error (error code: 000180)
- LFT2 PID excess load error (error code: 000181)
- LFT2 PID excess speed error (error code: 000182)
- LFT2 PID lock error (error code: 000184)
- LFT3 PID driving time error (error code: 000200)
- LFT3 PID excess load error (error code: 000201)
- LFT3 PID excess speed error (error code: 000202)
- LFT3 PID lock error (error code: 000204)
- LFT4 PID driving time error (error code: 000220)
- LFT4 PID excess load error (error code: 000221)
- LFT4 PID excess speed error (error code: 000222)
- LFT4 PID lock error (error code: 000224)
- PG PID driving time error (error code: 000480)
- PG PID excess load error (error code: 000481)
- PG PID excess speed error (error code: 000482)
- PG PID reverse error (error code: 000483)
- PG PID lock error (error code: 000484)
- ASF3 PID driving time error (error code: 000540)
- ASF3 PID excess load error (error code: 000541)
- ASF3 PID excess speed error (error code: 000542)
- ASF3 PID reverse error (error code: 000543)
- ASF3 PID lock error (error code: 000544)
- ASF3 load position driving time error (error code: 000550)
- ASF3 load position excess load error (error code: 000551)
- ASF3 load position excess speed error (error code: 000552)
- ASF3 load position reverse error (error code: 000553)
- ASF4 PID driving time error (error code: 000560)
- ASF4 PID excess load error (error code: 000561)
- ASF4 PID excess speed error (error code: 000562)
- ASF4 PID reverse error (error code: 000563)
- ASF4 PID lock error (error code: 000564, 000565, 000566)
- ASF4 load position driving time error (error code: 000570)
- ASF4 load position excess load error (error code: 000571)
- ASF4 load position excess speed error (error code: 000572)
- ASF4 load position reverse error (error code: 000573)
- PE DETECTOR ERROR (ERROR CODE: 030001)
- PW sensor light value adjust error (error code: 030002)
- Emergency stop error caused by cover opening (Error code: 030004)
- Printhead electrical error
- X-Hot detect error (pre printing) (error code: 031001)
- X-Hot detect error (after flushing) (error code: 031002)
- TRANSISTOR TEMPERATURE ERROR (ERROR CODE: 031003)
- Head temperature error (error code: 031004)
- X-Hot detect error (at ink replacement timing) (error code: 031005)
- Print head fuse blown error (error code: 031006)
- VBS over-voltage error (error code: 031008)
- HCS error (error code: 031011)
- Additional cassette FW error
- Extension over connection error (error code: 032001)
- Incompatible expansion cassette connection error (error code: 032002)
- Additional setting state error 1 (Error code: 032051)
- Additional setting state error 2 (Error code: 032052)
- Addition recovery mode error (error code: 032101)
- Addition communication error 1 (error code:032151)
- Addition communication error 2 (error code:032152)
- Addition communication error 3 (error code:032153)
- Addition communication error 4 (error code:032154)
- Addition communication error 5 (error code:032155)
- Addition communication error 6 (error code:032156)
- Addition communication error 7 (error code:032157)
- Addition communication error 8 (error code:032158)
- Addition communication error 9 (error code:032159)
- Addition communication error 10 (error code:032160)
- Addition communication error 11 (error code:032161)
- Addition communication error 12 (error code:032162)
- CSIC error
- CRCM FUSE BLOWN ERROR (ERROR CODE:033001)
- ASIC ACCESS ERROR (ERROR CODE: 033002)
- FATAL ERROR WHEN SENDING SC (ERROR CODE: 033004)
- Other ink device error (error code: 033005)
- Read parity error (error code: 033006)
- Write Parity Error (Error code: 033007)
- Home position seek error (error code: 034001)
- Deadlock avoidance impossible (error code: 034002)
- Impossible contact detection error (error code: 034003)
- Motor runaway error (error code: 034010)
- Ink leak error (Error code: 034841)
- INTERNAL μSD MALFUNCTION ERROR (ERROR CODE: 205602)
- Match error between Main ROM and μSD ROM (PDL Program) (error code:205604)_1
- FW error
- Precautions for collecting the main unit log
- ADF/SCN error
- Troubleshooting from Failure Symptom
- Feeding trouble
- Printing/image quality trouble
- ADF/scanner trouble
- Other
- Individual Action Check Function
- Fax related troubleshooting
- Disassembly / Assembly
- Repair work summary
- Disassembly Flowchart
- Housing 1
- Housing 2
- Housing 3
- Ink Supply (1/4)
- Ink Supply (2/4)
- Ink Supply (3/4)
- Ink Supply (4/4)
- ADF/SCN（1/4）
- ADF/SCN（2/4）
- ADF/SCN（3/4）
- ADF/SCN（4/4）
- Electric Circuit Components (1/3)
- Electric Circuit Components (2/3)
- Electric Circuit Components (3/3)
- Ink system mechanism
- Carriage Mechanism (1/4)
- Carriage Mechanism (2/4)
- Carriage Mechanism (3/4)
- Carriage Mechanism (4/4)
- Paper Feed Mechanism (1/6)
- Paper Feed Mechanism (2/6)
- Paper Feed Mechanism (3/6)
- Paper Feed Mechanism (4/6)
- Paper Feed Mechanism (5/6)
- Paper Feed Mechanism (6/6)
- Paper Cassette
- Optional Paper Cassette (1/4)
- Optional Paper Cassette (2/4)
- Optional Paper Cassette (3/4)
- Optional Paper Cassette (4/4)
- Parts/Components Location
- Before / After Replacement Work
- Disassembly & Assembly
- Housing
- Ink Supply
- Paper Jam Clear Cover Holder
- Paper Jam Clear Cover Open Sensor
- Left RIPS Housing Assy
- Ink Pack Cover Lock Lever Assy
- Front RIPS Housing
- Decompression Tube Assy
- Ink End Sensor
- Ink Supply Unit
- Decompression Pump Unit
- Ink Leak Sensor Assy
- CSIC FFC
- Ink Pack Cover Belt
- Ink Pack Cover
- Ink Pack Cover Open Sensor
- Right RIPS Housing Assy
- CSIC Relay Board
- Paper Jam Clear Cover Belt
- Paper Jam Clear Cover
- Rear RIPS Housing
- ADF/SCN
- ADF/SCN Unit
- ADF Hinge
- Top ADF Document Support Assy
- ADF Document Size Sensors
- ADF Document Size Sensors
- ADF Cover Assy
- ASF Cover
- ADF Pad Assy
- ADF PF Support Guide
- Document Mat Cover Assy
- ADF Pick Up Roller Assy
- Front ADF Base
- Front ADF Cover
- Screw Cover Seal
- Rear ADF Cover
- Rear ADF Base
- Document Stopper
- Right ADF Cover
- Electric Components
- Ink system mechanism
- Carriage mechanism
- APG Drive Assy
- APG Drive Sensor
- PW Drive Shutter
- APG Motor Assy
- APG Encoder
- Print Head
- Print Head (Preparation before reassembly)
- Installing the Print Head
- Confirmation after replace the Print Head
- Preparation before Adjustment
- Adjustment after replacing the Print Head (Inspection& Ink Charge)
- Installing the Leak Check Jig
- Leak Check Judgment
- Adjustment after replacing the Print Head (Adjustment)
- CR Scale
- CR Motor Assy
- CR Unit
- Print Head (Preparation before reassembly)
- Installing the Print Head
- Confirmation after replace the Print Head
- Preparation before Adjustment
- Adjustment after replacing the Print Head (Inspection& Ink Charge)
- Installing the Leak Check Jig
- Leak Check Judgment
- Adjustment after replacing the Print Head (Adjustment)
- PW Sensor
- CR Timing Belt
- Paper Feed Mechanism
- Duplex Print Assy
- Middle Duplex Print Guide
- Feed Sensor
- Paper Size Sensor
- Pick-up Roller
- Feed Lever
- Duplex Print Cover Assy
- Mounting Plate Assy
- Rear Band
- Hopper Up/down Sensor
- Paper Detection Sensor
- PF Belt Tension Stopper
- SMAP Phase Sensor
- PF Encoder Assy
- PF Timing Belt
- Rear ASF Unit
- Link Lever
- Rear ASF Solenoid
- Rear ASF Clutch Gear
- ASF Drive Assy
- ASF Encoder
- PF Drive Assy
- Nip Release Solenoid
- Nip Release Sensor
- Paper Jam Sensor
- Lift Drive Assy
- Paper Guide Upper Right
- Paper Guide Upper Left
- Paper Guide Upper Center Right
- Paper Guide Upper Center Left
- Paper Guide Upper Center Assy
- Star Wheel Assy
- PE Assy
- PAD,LEVER,PE
- RIPS Drive Roller
- RIPS Drive Roller
- Paper Cassette
- Additional cassette unit
- Option Pick-up Roller
- Option Rear Cover
- Option Rear Cover Belt
- Option Feed Lever
- Upper Connector
- Lower Connector
- Option Right Frame
- Option Rear Cover Sensor
- Separate Roller Drive Gear
- Lift Drive Gear
- Spur Gear (with E-ring)
- Vertical Roller
- Cassette Detection Sensor
- Feed Sensor
- Cassette Paper Size Sensor
- Paper Detection Sensor
- Hopper Up/down Sensor
- Option Cassette Paper Size Sensor
- Option Cassette Paper Size Sensor Lever
- Option Cassette Paper Size Sensor Holder
- Service Support Mode
- Adjustment and Additional Operations
- Overview
- List of Tools/Software/Consumables for Adjustments
- Adjustments and Check Items Purpose
- Adjustment and Inspection List
- Adjustments and Check Items Details
- Mechanical adjustments
- Software adjustments and inspections
- Initial Setting Menu
- Mech Adjust MENU
- Printing Adjust MENU
- Simple Adjustment MENU
- Mech Check MENU
- Printing Check MENU
- Maintenance MENU
- Main Parts Adjust: MENU
- BEFORE REPAIR OPERATION [B90] (PRINT HEAD)
- AFTER REPAIR ADJUSTMENT [B80] (PRINT HEAD)
- BEFORE REPAIR OPERATION [B91] (INK SUPPLY UNIT)
- AFTER REPAIR ADJUSTMENT [B81] (INK SUPPLY UNIT)
- BEFORE REPAIR OPERATION [B92] (INK SYSTEM ASSY)
- AFTER REPAIR ADJUSTMENT [B82] (INK SYSTEM ASSY)
- AFTER REPAIR ADJUSTMENT [B83] (REAR ASF UNIT)
- AFTER REPAIR ADJUSTMENT [B84] (MAIN BOARD)
- Periodic Maintenance MENU
- Maintenance and Inspections
- Appendix