Service Manual
Page 5
... a procedure or action. ADC: Automatic Density Control BTR: Bias Transfer Roller CRUM: Customer Replaceable Unit Monitor CTD: Toner Density Control DRV: Motor Driver Board ESD: Electrostatic Discharge IDT: Intermediate Transfer Unit MCU: Engine Control Board NCS: Non-Contact Sensor PHD: Imaging...ROS: Laser Scanning Unit RTC: Charge Roller Note A note indicates an operating or maintenance procedure, practice or condition that is neccessary to the FRU Parts List. Service Terms Manual Terms Various terms are used throughout this manual. iv Phaser 6250 Color Printer Common Acronyms...
... a procedure or action. ADC: Automatic Density Control BTR: Bias Transfer Roller CRUM: Customer Replaceable Unit Monitor CTD: Toner Density Control DRV: Motor Driver Board ESD: Electrostatic Discharge IDT: Intermediate Transfer Unit MCU: Engine Control Board NCS: Non-Contact Sensor PHD: Imaging...ROS: Laser Scanning Unit RTC: Charge Roller Note A note indicates an operating or maintenance procedure, practice or condition that is neccessary to the FRU Parts List. Service Terms Manual Terms Various terms are used throughout this manual. iv Phaser 6250 Color Printer Common Acronyms...
Service Manual
Page 14
... Tray Specifications 1-14 2 Theory of Operation Overview of the Phaser 6250 Color Laser Printer Theory of Operation . . 2-2 Summary of the Printer 2-14 Paper Path Route 2-15 Service Manual xiii Paper Pick 2-6 Laser Light Intensity Control 2-6 Process Control 2-6 LED Light Density CTD (ADC) Control of Sensor 2-8 Color Registration Control 2-9 Transfer Roller Assembly Control 2-11 Toner Control 2-12 Fuser Control 2-13...
... Tray Specifications 1-14 2 Theory of Operation Overview of the Phaser 6250 Color Laser Printer Theory of Operation . . 2-2 Summary of the Printer 2-14 Paper Path Route 2-15 Service Manual xiii Paper Pick 2-6 Laser Light Intensity Control 2-6 Process Control 2-6 LED Light Density CTD (ADC) Control of Sensor 2-8 Color Registration Control 2-9 Transfer Roller Assembly Control 2-11 Toner Control 2-12 Fuser Control 2-13...
Service Manual
Page 15
Tray 2 2-20 HCF Drive and Gears - Transmission Route 2-31 Chute Assembly Registration (REGI 2-32 Transfer Roller and Fuser Assembly 2-33 Fuser Drive Assembly - Transmission Route 2-25 500-Sheet Feeder Drive and Gears - Print Engine and Tray 1 2-18 Paper Tray 2 2-19...3-21 Jam at Registration Roller: Jam RR 3-23 Misfeed at Tray 1 (MPT): Jam T1 3-25 Misfeed at Tray 2: Jam T2 3-28 Misfeed at Tray 3: Jam T3 3-31 Misfeed at Tray 4: Jam T4 3-34 Door and Cover Errors 3-36 Close Front Door 3-36 Consumable Errors 3-37 xiv Phaser 6250 Color Printer Transmission Route 2-17 Gear...
Tray 2 2-20 HCF Drive and Gears - Transmission Route 2-31 Chute Assembly Registration (REGI 2-32 Transfer Roller and Fuser Assembly 2-33 Fuser Drive Assembly - Transmission Route 2-25 500-Sheet Feeder Drive and Gears - Print Engine and Tray 1 2-18 Paper Tray 2 2-19...3-21 Jam at Registration Roller: Jam RR 3-23 Misfeed at Tray 1 (MPT): Jam T1 3-25 Misfeed at Tray 2: Jam T2 3-28 Misfeed at Tray 3: Jam T3 3-31 Misfeed at Tray 4: Jam T4 3-34 Door and Cover Errors 3-36 Close Front Door 3-36 Consumable Errors 3-37 xiv Phaser 6250 Color Printer Transmission Route 2-17 Gear...
Service Manual
Page 16
...[3] [4] with [size] [type 3-62 Fatal Errors 3-63 Laser Failure 3-63 Density Sensor Failure 3-64 Fuser Failure 3-65 Fuser... NVRAM Error 3-75 Replace [Y] [M] [C] [K] Toner Cartridge 3-76 [Y] [M] [C] [K] Toner Cartridge Failure 3-77 Non-Phaser 6250 Fuser 3-78 Non-Phaser 6250 Imaging Unit 3-79 Environmental Sensor Failure 3-80 Service Manual xv Load Tray [1 (MPT)] [2] [3] [4] with [...Imaging Unit or Imaging Unit is Near End of Life 3-38 Install or Reseat Transfer Roller 3-39 Replace Transfer Roller or Transfer Roller is at End of Life 3-40 Install or Reseat Fuser 3-41 Replace Fuser ...
...[3] [4] with [size] [type 3-62 Fatal Errors 3-63 Laser Failure 3-63 Density Sensor Failure 3-64 Fuser Failure 3-65 Fuser... NVRAM Error 3-75 Replace [Y] [M] [C] [K] Toner Cartridge 3-76 [Y] [M] [C] [K] Toner Cartridge Failure 3-77 Non-Phaser 6250 Fuser 3-78 Non-Phaser 6250 Imaging Unit 3-79 Environmental Sensor Failure 3-80 Service Manual xv Load Tray [1 (MPT)] [2] [3] [4] with [...Imaging Unit or Imaging Unit is Near End of Life 3-38 Install or Reseat Transfer Roller 3-39 Replace Transfer Roller or Transfer Roller is at End of Life 3-40 Install or Reseat Fuser 3-41 Replace Fuser ...
Service Manual
Page 33
Consumables Toner Cartridges High-Capacity Standard Capacity Routine Maintenance Items Imaging Unit Fuser Assembly Transfer Roller and Waste Box Feed Roller Kit* * No life tracking for this item Print Life 8,000 4,000 30,000 100,000 15,000 up to display the near end-of-life ... length. Consumable Life Counter Behavior Internal counters track Consumables and Routine Maintenance Items life usage and store the values in order to 100,000 1-10 Phaser 6250 Color Laser Printer Service Manual The image processor board monitors these counters in NVRAM.
Consumables Toner Cartridges High-Capacity Standard Capacity Routine Maintenance Items Imaging Unit Fuser Assembly Transfer Roller and Waste Box Feed Roller Kit* * No life tracking for this item Print Life 8,000 4,000 30,000 100,000 15,000 up to display the near end-of-life ... length. Consumable Life Counter Behavior Internal counters track Consumables and Routine Maintenance Items life usage and store the values in order to 100,000 1-10 Phaser 6250 Color Laser Printer Service Manual The image processor board monitors these counters in NVRAM.
Service Manual
Page 41
... transfer roller 1). The beams are attracted to the drum. The laser beams are two IDT1's: one for yellow and magenta and one for YMCK. The negatively charged toner image on the drum surface is a 'full-color laser printer', that is kept at a constant negative potential. A summary description of the printing process is required. Overview of the Phaser...
... transfer roller 1). The beams are attracted to the drum. The laser beams are two IDT1's: one for yellow and magenta and one for YMCK. The negatively charged toner image on the drum surface is a 'full-color laser printer', that is kept at a constant negative potential. A summary description of the printing process is required. Overview of the Phaser...
Service Manual
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... IDT1 [(4) Primary transfer] [(5) Secondary transfer] IDT1 Cleaner [(6) Cleaning (11) Cleaning] Developer(M) [(3) Development] RTC [(1) Changing with electricity] Developer(C) [(3) Development] Drum(C) RTC [(1) Changing with electricity] Developer(K) [(3) Development] Drum(K) Refresher IDT2 Cleaner [(8) Cleaning (11) Cleaning] IDT2 [(5) Secondary transfer] [(7) Tertiary transfer] IDT1 [(4) Primary transfer] [(5) Secondary transfer] Refresher IDT1 Cleaner [(6) Cleaning (11) Cleaning] 6250-026 Printing Process Components 2-4 Phaser 6250 Color Laser Printer Service Manual
... IDT1 [(4) Primary transfer] [(5) Secondary transfer] IDT1 Cleaner [(6) Cleaning (11) Cleaning] Developer(M) [(3) Development] RTC [(1) Changing with electricity] Developer(C) [(3) Development] Drum(C) RTC [(1) Changing with electricity] Developer(K) [(3) Development] Drum(K) Refresher IDT2 Cleaner [(8) Cleaning (11) Cleaning] IDT2 [(5) Secondary transfer] [(7) Tertiary transfer] IDT1 [(4) Primary transfer] [(5) Secondary transfer] Refresher IDT1 Cleaner [(6) Cleaning (11) Cleaning] 6250-026 Printing Process Components 2-4 Phaser 6250 Color Laser Printer Service Manual
Service Manual
Page 47
... density. The reflected light density varies 2-8 Phaser 6250 Color Laser Printer Service Manual Admix Mode If the high area coverage mode can not deal with the reduction of the subsequent 8 prints. If the excess amount cannot be the specified value when no toner is put on the Transfer Roller. If toner density is too great (excess... light from the CTD sensor and the referenced value for the toner density will change. This causes a large discrepancy between the measured values from the transfer roller.
... density. The reflected light density varies 2-8 Phaser 6250 Color Laser Printer Service Manual Admix Mode If the high area coverage mode can not deal with the reduction of the subsequent 8 prints. If the excess amount cannot be the specified value when no toner is put on the Transfer Roller. If toner density is too great (excess... light from the CTD sensor and the referenced value for the toner density will change. This causes a large discrepancy between the measured values from the transfer roller.
Service Manual
Page 49
... is changed to determine the threshold value. 2. The laser write timing is outlined below: 1. Patches for the amount of registration shift. 2-10 Phaser 6250 Color Laser Printer Service Manual The amount of registration shift is calculated from... the threshold value determined in Step 1 and the patch density measured in the amount of patches is led by the CTD (ADC) sensor is larger than the registration patches. 10mm K K C K M K Y 3. With no toner on the Transfer Roller...
... is changed to determine the threshold value. 2. The laser write timing is outlined below: 1. Patches for the amount of registration shift. 2-10 Phaser 6250 Color Laser Printer Service Manual The amount of registration shift is calculated from... the threshold value determined in Step 1 and the patch density measured in the amount of patches is led by the CTD (ADC) sensor is larger than the registration patches. 10mm K K C K M K Y 3. With no toner on the Transfer Roller...
Service Manual
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Paper Path of the Printer EXIT ROLL : Laser beam : Paper path : Paper sensors MID ROLL FUSER ASSY PAPER PICK ROLLER (T2) PAPER PICK ROLLER (T3) PAPER PICK ROLLER (T4) PAPER FEED ROLLER (T2) PAPER FEED ROLLER (T2) PAPER FEED ROLLER (T4) DUPLEX ROLLER TRANSFER ROLLER METAL ROLL REGISTRATION ROLL FEED ROLL ASSY RETARD ROLLER TURN ROLL TURN CHUTE ASSY (T2) TURN ROLL ASSY (T2) TURN CHUTE ASSY (T3) TURN ROLL ASSY (T3) PAPER FEED TRAY PAPER FEED ROLLER (T3) TURN CHUTE ASSY (T4) TURN ROLL ASSY (T4) PAPER FEED TRAY 6250-054 2-14 Phaser 6250 Color Laser Printer Service Manual
Paper Path of the Printer EXIT ROLL : Laser beam : Paper path : Paper sensors MID ROLL FUSER ASSY PAPER PICK ROLLER (T2) PAPER PICK ROLLER (T3) PAPER PICK ROLLER (T4) PAPER FEED ROLLER (T2) PAPER FEED ROLLER (T2) PAPER FEED ROLLER (T4) DUPLEX ROLLER TRANSFER ROLLER METAL ROLL REGISTRATION ROLL FEED ROLL ASSY RETARD ROLLER TURN ROLL TURN CHUTE ASSY (T2) TURN ROLL ASSY (T2) TURN CHUTE ASSY (T3) TURN ROLL ASSY (T3) PAPER FEED TRAY PAPER FEED ROLLER (T3) TURN CHUTE ASSY (T4) TURN ROLL ASSY (T4) PAPER FEED TRAY 6250-054 2-14 Phaser 6250 Color Laser Printer Service Manual
Service Manual
Page 55
Developer Drive Assembly: Supplies the drive to the following section details all major components of the printer and their relative functions. Main Drive Assembly: Supplies the drive to the Imaging Unit Developer. 2. Frame and Drive Assemblies 1 2 6250-064 1. Major Assemblies and Functions The following parts: ■ Paper Feeder ■ Retard Housing Assembly ■ Chute Assembly, Out (MPT position) ■ Chute Assembly, Registration ■ Imaging Unit (IDT 1, IDT 2, Drum) ■ Transfer Roller 2-16 Phaser 6250 Color Laser Printer Service Manual
Developer Drive Assembly: Supplies the drive to the following section details all major components of the printer and their relative functions. Main Drive Assembly: Supplies the drive to the Imaging Unit Developer. 2. Frame and Drive Assemblies 1 2 6250-064 1. Major Assemblies and Functions The following parts: ■ Paper Feeder ■ Retard Housing Assembly ■ Chute Assembly, Out (MPT position) ■ Chute Assembly, Registration ■ Imaging Unit (IDT 1, IDT 2, Drum) ■ Transfer Roller 2-16 Phaser 6250 Color Laser Printer Service Manual
Service Manual
Page 57
... H1 13. Registration Clutch 5. Transfer Roller 6. Retard Housing 2. Gear Feed 1 12. Print Engine and Tray 1 The drawing below shows the location of the various components specified in the Transmission Route Block Diagram on the preceding page. 6 7 5 4 3 2 1 FRONT 16 15 14 13 8 9 10 11 12 6250-052 1. Turn Clutch 2-18 Phaser 6250 Color Laser Printer Service Manual
... H1 13. Registration Clutch 5. Transfer Roller 6. Retard Housing 2. Gear Feed 1 12. Print Engine and Tray 1 The drawing below shows the location of the various components specified in the Transmission Route Block Diagram on the preceding page. 6 7 5 4 3 2 1 FRONT 16 15 14 13 8 9 10 11 12 6250-052 1. Turn Clutch 2-18 Phaser 6250 Color Laser Printer Service Manual
Service Manual
Page 59
This activates the pick-up assembly. Spring Feed: See Paper Pick Rollers. 2-20 Phaser 6250 Color Laser Printer Service Manual No Paper Sensor: Detects presence or absence of one sheet to the transfer roller and the developing bias). 2. Paper Pick Rollers: When the feed solenoid energizes, the spring feed force engages the gear feed and the gear idler feed...
This activates the pick-up assembly. Spring Feed: See Paper Pick Rollers. 2-20 Phaser 6250 Color Laser Printer Service Manual No Paper Sensor: Detects presence or absence of one sheet to the transfer roller and the developing bias). 2. Paper Pick Rollers: When the feed solenoid energizes, the spring feed force engages the gear feed and the gear idler feed...
Service Manual
Page 67
Fuser Drive Assembly: Supplies the drive to the process control. 2. Waste Toner Full Sensor: Detects when the waste toner collect space in the transfer roller assembly is full. 4. Chute Assembly In 1 2 3 4 6250-058 1. CTD (ADC) Sensor: Detects the presence of the Transfer Roller and monitors the density of toner on page 2-33. 3. Fuser Assembly: See "Transfer Roller and Fuser Assembly" on the surface of the transfer roller then feeds it back to the Fuser Assembly. 2-28 Phaser 6250 Color Laser Printer Service Manual
Fuser Drive Assembly: Supplies the drive to the process control. 2. Waste Toner Full Sensor: Detects when the waste toner collect space in the transfer roller assembly is full. 4. Chute Assembly In 1 2 3 4 6250-058 1. CTD (ADC) Sensor: Detects the presence of the Transfer Roller and monitors the density of toner on page 2-33. 3. Fuser Assembly: See "Transfer Roller and Fuser Assembly" on the surface of the transfer roller then feeds it back to the Fuser Assembly. 2-28 Phaser 6250 Color Laser Printer Service Manual
Service Manual
Page 77
...Reader: The Customer Replaceable Unit Monitor (CRUM) detects toner usage and provides a front panel monitor of remaining levels for the 'tertiary transfer' and 'static elimination' part of toner in each contain a toner motor which supplies the drive to the Agitator in the Toner ... Board, EEPROM: Consumable use (Fuser and Imaging Unit NVRAM Data) information is stored and communicated to the Transfer Roller and the Detack Saw for each color. 3. Sub-High Voltage Power Supply Board: Supplies high-voltage to the Engine Control Board. 2-38 Phaser 6250 Color Laser Printer Service Manual
...Reader: The Customer Replaceable Unit Monitor (CRUM) detects toner usage and provides a front panel monitor of remaining levels for the 'tertiary transfer' and 'static elimination' part of toner in each contain a toner motor which supplies the drive to the Agitator in the Toner ... Board, EEPROM: Consumable use (Fuser and Imaging Unit NVRAM Data) information is stored and communicated to the Transfer Roller and the Detack Saw for each color. 3. Sub-High Voltage Power Supply Board: Supplies high-voltage to the Engine Control Board. 2-38 Phaser 6250 Color Laser Printer Service Manual
Service Manual
Page 89
... of motors and fans by Xerox service personnel and authorized service providers only. Status Engine Board ROM Version Printer Configuration Ambient Temp/Humidity Fuser Temperature Fault History Test Prints Prints Test Prints stored in service tests. 3-8 Phaser 6250 Color Laser Printer Service Manual Interlock Switch Registration ... -cont'dTray 1 (MPT) No Paper Sensor Tray 2 No Paper Sensor Tray 3 No Paper Sensor Tray 4 No Paper Sensor Transfer Roller Toner Full Sensor Image Unit Installed/Not Installed Fuser Fan Alarm Sensor Rear Fan Alarm Sensor ADC (CTD) Sensor OHP Sensor Fuser Center...
... of motors and fans by Xerox service personnel and authorized service providers only. Status Engine Board ROM Version Printer Configuration Ambient Temp/Humidity Fuser Temperature Fault History Test Prints Prints Test Prints stored in service tests. 3-8 Phaser 6250 Color Laser Printer Service Manual Interlock Switch Registration ... -cont'dTray 1 (MPT) No Paper Sensor Tray 2 No Paper Sensor Tray 3 No Paper Sensor Tray 4 No Paper Sensor Transfer Roller Toner Full Sensor Image Unit Installed/Not Installed Fuser Fan Alarm Sensor Rear Fan Alarm Sensor ADC (CTD) Sensor OHP Sensor Fuser Center...
Service Manual
Page 97
... at Fuser Jam at Duplex Jam at Registration Roller 3-16 Help Text/Code Jam T1/155 Jam T2/156 Jam T3/157 Jam T4/158 Jam F/152 Jam D/153 Jam RR/154 Jam History Code 1 2 3 4 5 6 7 Phaser 6250 Color Laser Printer Service Manual Exit - Test Front Panel Display ...and Test Definition CRU Life Read Black Toner (K) Life Cyan Toner (C) Life Magenta Toner (M) Life Yellow Toner (Y) Life Transfer Roller Life Read Printer Page Count Imaging Unit Count 1: number of the Image Processor ...
... at Fuser Jam at Duplex Jam at Registration Roller 3-16 Help Text/Code Jam T1/155 Jam T2/156 Jam T3/157 Jam T4/158 Jam F/152 Jam D/153 Jam RR/154 Jam History Code 1 2 3 4 5 6 7 Phaser 6250 Color Laser Printer Service Manual Exit - Test Front Panel Display ...and Test Definition CRU Life Read Black Toner (K) Life Cyan Toner (C) Life Magenta Toner (M) Life Yellow Toner (Y) Life Transfer Roller Life Read Printer Page Count Imaging Unit Count 1: number of the Image Processor ...
Service Manual
Page 121
...J141-1 on page 10-23. Replace Transfer Roller or Transfer Roller is at End of Life ■ Print the Supplies Usage page to verify the remaining life and Transfer Roller install date. ■ Cycle printer power. ■ If the problem ...Roller Toner Full Sensor Harness for evidence of Life" is a warning. The "Transfer Roller is at End of fault Replace the parts Go to Step 3. 3 Remove the Transfer Roller Assembly. Does the Transfer Roller Toner Full Sensor function correctly? Replace the Toner Full Sensor Harness, page 8-43. 3-40 Phaser 6250 Color Laser Printer...
...J141-1 on page 10-23. Replace Transfer Roller or Transfer Roller is at End of Life ■ Print the Supplies Usage page to verify the remaining life and Transfer Roller install date. ■ Cycle printer power. ■ If the problem ...Roller Toner Full Sensor Harness for evidence of Life" is a warning. The "Transfer Roller is at End of fault Replace the parts Go to Step 3. 3 Remove the Transfer Roller Assembly. Does the Transfer Roller Toner Full Sensor function correctly? Replace the Toner Full Sensor Harness, page 8-43. 3-40 Phaser 6250 Color Laser Printer...
Service Manual
Page 183
... be changed one color are usually attributable to the Imaging Unit. The Phaser 6250 printer uses an Imaging Unit that contains all four colors in only one at a time until the defect has been eliminated. 5-2 Phaser 6250 Color Laser Printer Service Manual Defects occurring in one color and if it ...ream that has been tested and approved for use in the Phaser 6250 printer. To successfully troubleshoot print-quality problems, as many variables as voids and lines, are observed, the Imaging Unit, Transfer Roller and Fuser should be isolated to diagnose. Temperature and humidity ...
... be changed one color are usually attributable to the Imaging Unit. The Phaser 6250 printer uses an Imaging Unit that contains all four colors in only one at a time until the defect has been eliminated. 5-2 Phaser 6250 Color Laser Printer Service Manual Defects occurring in one color and if it ...ream that has been tested and approved for use in the Phaser 6250 printer. To successfully troubleshoot print-quality problems, as many variables as voids and lines, are observed, the Imaging Unit, Transfer Roller and Fuser should be isolated to diagnose. Temperature and humidity ...
Service Manual
Page 191
Does the image quality improve if the Complete Transfer Roller is replaced? Check the Front 1A Harness for continuity. P/J5020 Transfer roller Go to Step 4. Go to Step 5. Replace the Engine Control Board, page 8-107. 5-10 Phaser 6250 Color Laser Printer Service Manual Does the image quality improve if the Complete Laser Unit is replaced? Does the image quality improve...
Does the image quality improve if the Complete Transfer Roller is replaced? Check the Front 1A Harness for continuity. P/J5020 Transfer roller Go to Step 4. Go to Step 5. Replace the Engine Control Board, page 8-107. 5-10 Phaser 6250 Color Laser Printer Service Manual Does the image quality improve if the Complete Laser Unit is replaced? Does the image quality improve...