Sharp MX-M620N

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MX-M700N LSU SECTION i – 3

3) Disconnect the connector, and remove the process cooling fan

unit.

4) Disconnect the connectors to remove the LSU unit.

Main Page

Contents1
Service Manual1
Table of Contents2
Note for Servicing4
Precautions for Servicing4
Installing Site Recommendation4
Warning for Servicing4
- Product Outline6
- Different Points of MX-M550/620/700 Series from AR-M550/620/700 Series6
Main Features6
- Data Security Coexisting with Document Filing7
- 2-Way Security Solution7
- Document Filing8
- Configuration9
- Main Unit and Option Lineup9
- Option Lineup9
- Option Combinations10
- Block Diagram10
Basic Specifications11
- Paper Feed, Paper Transport, and Paper Exit Section12
- Paper Exit Size / Type13
- Resolution/Gradation13
- Duplex13
- Bypass Tray13
- Document Table14
- Automatic Document Feeder14
- First Copy Time14
Functional Specifications14
- Image Send Function15
- Paper Size15
- Copy Functions15
- Send Function16
- Receive Function16
- Multiple Address Specification16
- Address Specification16
- Printer Function17
- Report/List Function17
- Other Functions17
- Support Print Channel17
- Print Function18
- Command Compatibility18
- Environment Setting18
- Windows Driver Function19
- Frequently Used Functions19
- Paper Feed System19
- Paper Exit Method19
- Windows PPD, Macintosh PPD Driver Funciton20
- Print Performance20
- Data Operation by each Function21
- Safety and Environmental Standards21
- Environmental Conditions for Use of the Main21
Environmental Conditions21
Consumable Parts22
Supply System Table22
Maintenance Parts List23
External View and Internal Structure28
Identification of each Section and Functions28
- Internal Operation Parts29
- Operation, Display Parts30
- Job Status Screen31
- Sensor/Detector33
- (Large Capasity Tray) Paper Feed Tray34
- Paper Feed Tray34
- MX-M700N External View and Internal Structure35
- Paper Feed Tray35
- Paper Feed Trays35
- Switch38
- Clutch/Solenoid39
- Drive Motor40
- Lamp42
- Fan Motor43
- PWB (Main Unit Section)44
- FAX Section45
- Fuse/Thermostat45
- Adjustment Volume46
- Gate47
- Heater47
- Lock Position48
- Roller49
- Outline52
Adjustment Item List52
- Adjusting High Voltage Values53
- Adjust the Main Charger Grid Voltage53
Datails of Adjustment53
- Adjust the Developing Bias Voltage54
- Adjust the Transfer Current, Voltage54
- Adjust the Developing Doctor Gap56
- Adjusting the Developing Unit56
- Adjust the Developing Roller Main Pole57
- Adjust Print Image Distortions58
- Adjusting Image Distortions58
- Adjust the Scanner (Reading) Unitparallelism59
- Adjust Scanned Image Distortions in the Main Scanning Direction61
- Adjust Scanned Image Distortions in the Sub-Scanning Direction61
- Adjusting DSPF Parallelism63
- Adjust DSPF Skews64
- Adjust Image Focus in Original Table Mode/Dspf Front-Face Mode (CCD)65
- Adjusting the Image Focus65
- Adjust the Image Focus in DSPF Back-Face Mode (CIS)66
- Adjusting the Image Magnification67
- Adjusting the Image Off-Center72
- Adjusting the Image Position, Image Loss, and Void Area76
- Front/Rear Frame Direction Void Area77
- Leading Edge Image Loss/Void Area Adjustment77
- Trailing Edge Void Area Adjustment77
- Adjust the Copied Image Loss/Void Area in DSPF Mode78
- Adjust the Original Scan Start Position78
- Adjust the Image Loss in Scanner Mode79
- Leading Edge Image Loss Adjustment79
- Trailing Edge Image Loss Adjustment79
- Adjust the Image Loss for Images Sent in Fax Mode80
- Adjusting the Copied Image Quality80
- OC Lead Edge80
- Adjust the Binary Mode Copy Density for All Modes at Once81
- Copied Image Reference Density81
- Adjust the Copy Density in Photo Binary Mode82
- Adjust the Copied Image Gamma in Copy Mode83
- Adjust the Copied Image Sharpness83
- Adjusting the Print Quality in Fax Mode84
- Adjust the Fax Mode Print Density for All Modes at Once84
- Scan Mode Image Density Adjustment/Individual Setup (Super Fine Mode)87
- Adjust the Scan Mode Image Density for All Modes at Once87
- Adjusting the Image Quality in Scan Mode87
- Adjust the Image Gamma in Scanner Mode88
- Common Image Quality Adjustments for All of Copy, Scan, and Fax Modes88
- Original Table Mode/Spf Mode Image Density Correction (Copy Mode)88
- Set up the Auto Mode Operation for Copy, Scan, and Fax89
- Adjusting the Fusing Paper Guide Position90
- Adjusting the Paper Size Detection90
- Adjust the Paper Width Sensor for the Manual Paper Feed Tray90
- Adjust the Paper Width Sensor for Paper Feed Tray 391
- Adjust the Paper Width Sensor for the DSPF Paper Feed Tray92
- Adjust the Sensitivity of the Original Size Sensor93
- Adjusting the Touch Panel Coordinates93
- Adjusting the Original Size Detection93
- Adjusting the Supply Voltage94
- Adjustment Value/Simulation/Storage Data95
- Simulation Adjustment Value/ Set Value Data95
- Each Storage Data95
- Starting the Simulation96
- General96
- Basic Operation96
List of Simulation Codes98
Details of Simulation102
- Spf(Lead_Edge)114
- Cis(Lead_Edge)134
- Oc(Lead_Edge)147
- Spf(Lead_Edge)147
- Cis(Lead_Edge)147
- Press [START] Key147
- Self Diag Operation and Related Work Flow166
- Self Diag Operation166
- Self Diag Message Kinds166
- Self Diag166
- Breakdown Sequence167
- Breakdown Mode List167
- Process Control Trouble Operation Table167
- Trouble Mode Process168
- Power on Trouble Detection Sequence168
- Writing to the Trouble Memory168
Trouble Code List169
- The Network Card Is Not Installed or Broken171
- Another Communication Error Occurs171
- MC Trouble171
Details of Trouble Code171
- The Specified Mail Server (POP3) Suspends Response172
- CIS Shading Trouble (White Correction)172
- CIS Communication Trouble172
- System Data Trouble172
- Hdd Trouble172
- Decode Error Trouble173
- CCD Shading Trouble173
- CCD Communication Trouble173
- LSU Connection Trouble173
- Incompatibility Check (55Ppm)174
- Incompatibility Check (70Ppm)174
- Controller Connection Trouble174
- Incompatibility Check (62Ppm)174
- Auto Developer Adjustment Trouble175
- Finisher Communication Trouble175
- Finisher Transport Motor Abnormality175
- Finisher Oscillation Motor Trouble175
- Finisher/Pusher Motor Trouble176
- Finisher Tray Lift Motor Trouble176
- Finisher/Alignment Motor Trouble176
- Finisher Saddle Folding Sensor Trouble176
- Finisher/Saddle Alignment Motor Trouble177
- Finisher/Saddle Positioning Plate Motor Trouble177
- Finisher/Saddle Guide Motor Trouble177
- Finisher/Punch Backup ROM Trouble177
- Finisher-Inserter Communication Trouble178
- Inserter/Eeprom Trouble178
- Inserter/Reverse Sensor Trouble178
- Toner Control Sensor Open178
- Process Control Trouble179
- Drum Marking Sensor Gain Adjustment Error179
- Process Thermistor Breakdown179
- Developing Thermistor Breakdown179
- Machine Tray 4 Lift-Up Trouble180
- Machine Tray 3 Lift-Up Trouble180
- Machine Tray 2 Lift-Up Trouble180
- Machine Tray 1 Lift-Up Trouble180
- FAX Modem Operation Abnormality181
- FAX Write Protect Cancel181
- Abnormal Combination of the TEL/LIU PWB and the FAX Soft Switch181
- FAX-BOX Incompatibility Trouble181
- Thermistor Open/Fusing Unit Not Installed (HL3)182
- Fusing Section High Temperature Trouble (HL1)182
- Fusing Section High Temperature Trouble (HL2)182
- Fusing Section High Temperature Trouble (HL3)182
- Scanner Feed Trouble183
- Fusing Section Low Temperature Trouble (HL3)183
- 5-Times Continuous POD Notreached JAM Detection183
- Fusing Section Low Temperature Trouble (HL2)183
- Drum Motor Lock Detection184
- Fusing Motor Lock Detection184
- Developing Motor Lock Detection184
- Transfer Belt Separation Motor Trouble Detection184
- RIC Copy Inhibit Command Receive185
- FAX Battery Abnormality185
- RTC Read Error185
- EEPROM Read/Write Error185
- Memory Check Sum Error (Scanner)186
- HDD Section Individual Data Check Sum Error (MFP Control)186
- EEPROM Read/Write Error (Scanner)186
- SRAM Memory Individual Data Check Sum Error186
- DSPF Tray Lift-Down Trouble187
- LCC Lift Motor Trouble187
- LCC Communication Trouble187
- LCC Transport Motor Trouble187
Maintenance System Table188
Drum Peripheral Section191
Details of Maintenance191
- Transfer Section192
- Developing Section193
- Fusing Unit194
- Scanner Section195
- DSPF Section196
- Paper Feed Section197
- Transport Section/Paper Exit Reverse Section/Duplex Section198
- Drive Section199
- Filters200
- Execution Items before Maintenance and Servicing200
- Mandatory Maintenance and Service Items200
Other Related Items200
- Execution Items after Maintenance and Servicing201
- Rom Version-Up202
- Version-Up Target Rom's202
- Precautions203
- Necessary Items for Flash ROM Version-Up203
- Relationship between each ROM and Version-Up203
Flash ROM Version-Up Method203
- Writing Data205
- Receiving Data205
- Turning off the Power During the Version-Up Procedure206
- Version-Up Procedure Flowchart206
- Electrical Section209
- Overall Block Diagram209
- MFP Controller210
- PCU Circuit BLOCK211
- Scan Circuit BLOCK212
- Ac Power Line Diagram213
Power Line Chart213
- Ac Power Line Diagram (200V)214
- DC Power Line Diagram215
- SCN Unit Section216
Actual Wiring Chart216
- DSPF Unit Section217
- Image Process Section218
- Paper Transport Section219
- Transport/Option Section221
- Left Door Transport Section222
- Process Section223
- Power Source Peripheral Section224
- PCU Connector Table225
Signal Name List226
- Others236
- Count Specification236
- Paper Exit System Counter236
System Settings236
- Send System Counter237
- Receive System Counter237
- Total Counter Specifications238
- Department Counter238
- Printer Job Count-Up Specification238
- Blank Paper Count Specification239
- Consumables Counter Specification239
- Reset and Set for Suplly Counters239
- Location and Display of each Counter Data240
- Operating Procedures243
- Entering the Web Setting Mode243
- Font/Form Download243
Web Setting Service Mode243
- Password Setup244
- I-Fax Setup244
- Paper Jam Judgment Conditions245
Paper JAM Code245
- Sensor Cross Section247
- Clutch/Solenoid Cross Section248
- Motor Cross Section248
- Inserter (AR-CF2) Paper Jam Judgment Conditions249
A] External Outfit251
Electrical and Mechanism Relation Diagram252
B] Operation Panel252
- Operational Descriptions253
- Disassembly and Assembly253
C] Dspf Section255
- CIS Section257
- Paper Exit Section258
- Timing Chart259
- Document Tray Lift Operation260
- Document Feed, Transport, Scan, Paper Exit, and Operating Speed260
- The Original Scan260
- External Outfit Section260
- The Paper Feed Tray Section262
- Paper Feed and Paper Transport Section264
- Paper Feed Unit264
- Pickup Roller264
- DSPF Paper Feed/Paper Transport Motor265
- DSPF Cover Switch265
- Separation Roller265
- DSPF Paper Feed Clutch265
- DSPF Resist Roller Brake Clutch266
- DSPF Resist Roller Clutch266
- Torque Limiter266
- DSPF Paper Transport Roller 2 Brake Clutch267
- Transport Roller267
- DSPF Document Paper Pass Detector268
- CIS Control PWB/CIS Unit268
- DSPF Paper Exit Motor269
- DSPF Paper Transport Roller 3 Brake Clutch270
- Paper Exit Roller (Drive)271
- DSPF Open/Close Detector271
- DSPF Fan Motor272
- Dspf Pwb272
- Drive Unit272
D] Scanner Section274
- CCD/Lens Unit275
- CIS Unit275
- Image Signal Flow276
- Carriage (Lamp Unit) Shift (Scan) Speed276
- Scanner Unit277
- White Standard Glass278
- Table Glass278
- Mirror279
- Lens279
- Reflector279
- Scanner Dry Heater279
- Rails280
- Drive Belt280
- Drive Wire280
- Pulley280
- Scanner Motor281
- Scanner Relay PWB281
- CCD PWB Lens Unit281
- Scanner FLASH PWB282
- Scanner Control PWB282
- Scanner Home Position Sensor Detector282
- Document Size Detection Light Emitting PWB283
- Document Size Detection Light Reception PWB283
E] Manual Paper Feed Section285
- Multi Manual Paper Feed Tray Unit287
- Manual Paper Feed Unit Open/Close Switch287
- Manual Feed Empty Detector287
- Paper Feed Roller288
- Paper Feed Clutch289
- Manual Feed Paper Pass Detector289
- Manual Feed Gate Solenoid289
- Paper Pickup Solenoid290
- Manual Paper Width Size Detection PWB290
F] Tray Paper Feed Section293
- Paper Feed Tray 3, 4 Section295
- Paper Feed Operation297
- Paper Size of Paper Feed Trays Detection Method297
- Paper Remaining Detection299
- Disassembly/Assembly300
- Lift Wire302
- Dry Heater303
- Paper Remaining Quantity Detector303
- Paper Feed Tray 1, 2 Detection Sensor303
- Paper Remaining Quantity Sensor PWB303
- Paper Feed Tray Upper Limit Detector306
G] Paper Transport Section310
H] Duplex Section324
J] Photoconductor Section339
K] Toner Supply Section348
Developer Unit352
L] Developing Section352
M] Transfer Section357
Trademark Acknowledgements412

Table of Contents

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