Service Manual
Page 4
... ADC: Automatic Density Control NCS: Non-Contact Sensor BTR: Bias Transfer Roller PHD: Imaging Unit CRUM: Customer Replaceable Unit Monitor PL: FRU Parts List. Be aware of life. CTD: Toner Density Control PTL: Pre-Transfer Lamp DRV: Motor Driver Board RMI: Routine Maintenance Item ESD: ...Electrostatic Discharge RMS: Root-Mean-Square LSU: Laser Scanning Unit RTC: Charge Roller MCU: Engine Control Board Note A note indicates an ...
... ADC: Automatic Density Control NCS: Non-Contact Sensor BTR: Bias Transfer Roller PHD: Imaging Unit CRUM: Customer Replaceable Unit Monitor PL: FRU Parts List. Be aware of life. CTD: Toner Density Control PTL: Pre-Transfer Lamp DRV: Motor Driver Board RMI: Routine Maintenance Item ESD: ...Electrostatic Discharge RMS: Root-Mean-Square LSU: Laser Scanning Unit RTC: Charge Roller MCU: Engine Control Board Note A note indicates an ...
Service Manual
Page 15
Major Assemblies and Functions 2-7 Main Board 2-7 Print Cartridge 2-10 Laser Scan Unit (LSU 2-10 Transfer Roller 2-11 Fuser Assembly 2-11 Paper Feed Drive 2-11 Paper Out Sensor 2-11 Paper Feed Sequence 2-12 Registration Sensor 2-12 Paper Transport 2-12 Fuser Exit Sensor 2-13 Duplex Unit 2-13 3 Error Messages and Codes Introduction 3-2 Servicing Instructions 3-4 .... 4-3 Front Panel Continually Displays "No Paper in Tray [x 4-3 Front Panel Continually Displays "Output Tray Is Full 4-4 Paper Size Switch Assembly 4-4 Power Supply Troubleshooting 4-5 xiv Phaser 3450 Laser Printer
Major Assemblies and Functions 2-7 Main Board 2-7 Print Cartridge 2-10 Laser Scan Unit (LSU 2-10 Transfer Roller 2-11 Fuser Assembly 2-11 Paper Feed Drive 2-11 Paper Out Sensor 2-11 Paper Feed Sequence 2-12 Registration Sensor 2-12 Paper Transport 2-12 Fuser Exit Sensor 2-13 Duplex Unit 2-13 3 Error Messages and Codes Introduction 3-2 Servicing Instructions 3-4 .... 4-3 Front Panel Continually Displays "No Paper in Tray [x 4-3 Front Panel Continually Displays "Output Tray Is Full 4-4 Paper Size Switch Assembly 4-4 Power Supply Troubleshooting 4-5 xiv Phaser 3450 Laser Printer
Service Manual
Page 35
...print media producing a monochrome image. See the illustration on to end (axially) as a reference. 1. Exposure: The laser unit emits laser beams in response to the developer roller in contact with the drum surface to provide a uniform negative charge of an ... standby. Charging: The charge roller is transferred onto the print media using the voltage supplied by a Thermistor. The laser beams are turned on the following procedures are then applied to image data from the drum. 2-2 Phaser 3450 Laser Printer Service Manual The roller surface temperature is ...
...print media producing a monochrome image. See the illustration on to end (axially) as a reference. 1. Exposure: The laser unit emits laser beams in response to the developer roller in contact with the drum surface to provide a uniform negative charge of an ... standby. Charging: The charge roller is transferred onto the print media using the voltage supplied by a Thermistor. The laser beams are turned on the following procedures are then applied to image data from the drum. 2-2 Phaser 3450 Laser Printer Service Manual The roller surface temperature is ...
Service Manual
Page 38
... changes in the Laser Unit as mirrors and lenses), or variations in drum sensitivity are preventing the system from digital signals to the laser diode in the printing environment for each section (i.e. Fuser Control Fuser temperature control During fuser temperature control the printer's target temperature is turned on. In the Phaser 3450 Laser Printer, the process is...
... changes in the Laser Unit as mirrors and lenses), or variations in drum sensitivity are preventing the system from digital signals to the laser diode in the printing environment for each section (i.e. Fuser Control Fuser temperature control During fuser temperature control the printer's target temperature is turned on. In the Phaser 3450 Laser Printer, the process is...
Service Manual
Page 42
... provides all of the principle operating voltages and control signals for the following printer operations: ■ Main Drive Motor ■ Fuser Assembly ■ High Voltage Power Supply (HVPS) ■ Laser Scanner Unit (LSU) ■ Sensors ■ Solenoids ■ Thermistor ■ ...All parts related to the Fuser assembly. It also supplies AC voltage to the xerographic process ■ Optional Paper Tray 3 and Tray 1 The HVPS section generates and supplies the following voltages: ■ Transfer...
... provides all of the principle operating voltages and control signals for the following printer operations: ■ Main Drive Motor ■ Fuser Assembly ■ High Voltage Power Supply (HVPS) ■ Laser Scanner Unit (LSU) ■ Sensors ■ Solenoids ■ Thermistor ■ ...All parts related to the Fuser assembly. It also supplies AC voltage to the xerographic process ■ Optional Paper Tray 3 and Tray 1 The HVPS section generates and supplies the following voltages: ■ Transfer...
Service Manual
Page 43
... to correctly expose the drum. Image data transfer from the Main Board is controlled by a synchronization signal from the Laser Scan Unit and creates the image via the xerographic process. Print Cartridge The Print Cartridge receives image data in the form of the drum. 2-10 Phaser 3450 Laser Printer Service Manual The Print Cartridge contains the...
... to correctly expose the drum. Image data transfer from the Main Board is controlled by a synchronization signal from the Laser Scan Unit and creates the image via the xerographic process. Print Cartridge The Print Cartridge receives image data in the form of the drum. 2-10 Phaser 3450 Laser Printer Service Manual The Print Cartridge contains the...
Service Manual
Page 45
... Registration Sensor has two purposes. First, it is used to feed paper, it stays at the transfer area, the paper actuates the Registration Sensor. The temperature of a duplex print job, the drive ...it is time to the feed roller and retard roller. The solenoid armature releases the media unit clutch and the pick-up roller is designed with one revolution. Paper Transport The registration ...same time as the leading edge of the developed image on the second side. 2-12 Phaser 3450 Laser Printer Service Manual This shape allows paper to drive the paper into the output tray. When ...
... Registration Sensor has two purposes. First, it is used to feed paper, it stays at the transfer area, the paper actuates the Registration Sensor. The temperature of a duplex print job, the drive ...it is time to the feed roller and retard roller. The solenoid armature releases the media unit clutch and the pick-up roller is designed with one revolution. Paper Transport The registration ...same time as the leading edge of the developed image on the second side. 2-12 Phaser 3450 Laser Printer Service Manual This shape allows paper to drive the paper into the output tray. When ...
Service Manual
Page 59
... HVPS Dev Bias Charge Roll Transfer Roll (+) Transfer Roll (-) Pre-transfer Lamp (PTL) Laser Scanning Unit (LSU) Laser Diode Laser Ready Fuser Fuser Control OPC (Print Cartridge) Cycle Read OPC Cycle Developer Bias (+500V) turns on when OK is pressed and goes off when Cancel is pressed. Total OPC Cycle [XXX] 3-12 Phaser 3450 Laser Printer Service Manual Visual confirmation...
... HVPS Dev Bias Charge Roll Transfer Roll (+) Transfer Roll (-) Pre-transfer Lamp (PTL) Laser Scanning Unit (LSU) Laser Diode Laser Ready Fuser Fuser Control OPC (Print Cartridge) Cycle Read OPC Cycle Developer Bias (+500V) turns on when OK is pressed and goes off when Cancel is pressed. Total OPC Cycle [XXX] 3-12 Phaser 3450 Laser Printer Service Manual Visual confirmation...
Service Manual
Page 148
Service Parts List 9.1 Main Unit No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Name/Description Base Housing ...) Power Supply Board (220 Volts Duplex Guide Plate (with 14-1 ~ 14-3) Bracket Dummy Control Laser Assembly Cross Bar Tray 2 Empty Actuator Fan DC (Main) Stopper Fan Gear, Transfer Roll Gear Regi Z25 Transfer Roller Transfer Roller Bearing, Right (with 24-1 ~ 24-4) Transfer Roller Bearing, Left (with 25-1 ~ 25-3) Cap-M-Gear Gear Assembly Tray 2 Solenoid Tray...
Service Parts List 9.1 Main Unit No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Name/Description Base Housing ...) Power Supply Board (220 Volts Duplex Guide Plate (with 14-1 ~ 14-3) Bracket Dummy Control Laser Assembly Cross Bar Tray 2 Empty Actuator Fan DC (Main) Stopper Fan Gear, Transfer Roll Gear Regi Z25 Transfer Roller Transfer Roller Bearing, Right (with 24-1 ~ 24-4) Transfer Roller Bearing, Left (with 25-1 ~ 25-3) Cap-M-Gear Gear Assembly Tray 2 Solenoid Tray...