Xerox Phaser 840 Manuals

• 5

  User Safety Summary
• 6

  Service Safety Summary
• 7

  Table of Contents
• 13

  List of Tables
• 15

  List of Figures

17

General Information

• 17

  The Phaser 840/850 Printer Shown with Optional High-Capacity Paper Tray Assembly
  • 17

    High-Capacity Paper Tray
  • 17

    The Phaser 860 Printer Shown with the Optional High-Capacity Paper Tray Assembly
  • 18

    Phaser 840 Printer Overview
  • 20

    Phaser 850 Printer Overview
  • 21

    Phaser 860 Printer Overview
• 22

  Solid Inks
• 23

  Phaser 840/850 RAM and Printer Capabilities
  • 24

    Memory Considerations Phaser 840/850
  • 24

    Installed RAM and Printer Capabilities
  • 26

    Phaser 860 RAM and Printer Capabilities
  • 27

    Memory Considerations Phaser 860
  • 27

    Installed RAM and Printer Capabilities
• 28

  Print Engine Assemblies 840/850/860
  • 29

    Circuit Boards
  • 31

    The Printer's I C Bus
  • 32

    Printhead Maintenance System
  • 32

    Printhead Maintenance System of the Print Engine
  • 33

    Sensor Maps
  • 36

    Combination Sensors and Their Meanings
  • 36

    Media Tray Type Sensing
• 37

  The Main Board
• 37

  Features of the Phaser 840 Printer Main Board
• 38

  Features of the Phaser 860 Main Board
• 38

  Features of the Phaser 850 Printer Main Board
• 39

  Front Panel - Phaser 840/850 Printers
• 40

  Front Panel - Phaser 860
• 41

  Rear Panel Connections
  • 41

    Phaser 840 Printer Rear Panel
  • 42

    Phaser 850 Printer Rear Panel
  • 43

    Phaser 860 Printer Rear Panel
  • 44

    DIP Switches
  • 44

    Rear Panel DIP Switch Settings
  • 44

    Rear Panel Status Leds
• 45

  Phaser 840, 850 and 860 Printer Differences
• 47

  Specifications
  • 51

    Regulatory Specifications

53

Error Codes and Messages

• 53

  Phaser 840/850 Rear Panel PS and PE LED Codes
• 56

  Phaser 860 Power-Up Error Messages and LED Codes
  • 56

    The BIST (Built-In Self Test)
  • 57

    POST (Power On Self Test)
  • 57

    POST (Power On Self Test) Error Messages
• 60

  Fault Codes
• 61

  Front Panel & Fault History Log Error Codes and Messages
• 61

  C Bus
• 63

  Front Panel & Fault History Log Error Codes and Messages
• 69

  Error Code

89

Troubleshooting

• 89

  Electrical Interface RAP Table
• 89

  Media and Paper Path RAP Table
• 90

  Macintosh Printing Problems RAP Table
• 90

  Ghosting
• 90

  Wrinkling
• 91

  Network Event Logs
• 92

  Electronics Troubleshooting
  • 92

    System Power-Up Sequence
  • 96

    Inoperative Printer Problems
  • 96

    Main Board CPU Operation
  • 97

    Verifying Print Engine Operation By Printing a Built in Page
  • 97

    Verifying Power Supply Operation
  • 97

    Measuring Power Supply Voltages
  • 98

    Inspecting the Power Supply Fuses
  • 99

    Testing for Shorted Drivers
  • 100

    Testing for a Shorted Motor
  • 100

    Testing Motor and Solenoid Resistances
• 101

  Paper Path and Media-Based Problems
  • 101

    Media-Based Problems
  • 101

    Paper-Pick Errors
  • 102

    Print Transfer Jams
  • 102

    Checking the Process Motor and Drive Train
  • 103

    Media Skews Passing Through the Paper Path
• 104

  Print Image Quality Problems
  • 104

    Not Printing
  • 105

    Missing Ink or Light Colored Ink Band Running Length of Print
  • 105

    Missing or Light Colored Ink Band
  • 106

    Color Is Uneven
  • 107

    Streaks or Lines Down the Print
  • 108

    Scratches Parallel to the Long Axis of Printing, Particularly with Film
  • 108

    Scratches Parallel to the Long Axis of Printing
  • 109

    Printing Too Light or Too Dark
  • 110

    White Portion of Print Is Colored
  • 111

    Fuzzy Text
  • 112

    Poor Primary Color Fills
  • 113

    Ghosting
  • 114

    Poor Small Text Resolution
  • 115

    Vertical Line Appear Wavy
  • 115

    Vertical Line Appears Wavy
  • 116

    Oil Streaks On Print
  • 117

    Incomplete Image Transfer to Paper
  • 118

    Ink Smears On First Side of Duplex Print
  • 118

    Ink Smears On First Side of Duplex Printt
  • 119

    Repeating Print Defects On Print
  • 119

    Repeating Print Defects On the Print
  • 120

    Wrinkling
  • 121

    Image Is Offset or Cut Off
  • 121

    Oil Streaks On Top of Print
  • 121

    Poor Ink Adhesion, Poor Image Durability
• 122

  Evaluating the Printhead and Cap/Wipe/Purge System
  • 123

    Faceplate Showing Blade Wipe with No Drops, Smudges or Streaks
  • 123

    Faceplate Showing Streaks and Smudges From a Poor Wipe
  • 124

    Connecting the Vacuum Gauge to the Printer
  • 127

    Maintenance Tray Showing Good Purge
  • 128

    Troubleshooting Following Cap/Wipe/Purge Installation
  • 129

    Damaged Printhead Data Cable
• 131

  Macintosh Printing Problems
  • 131

    Image Never Prints
  • 131

    Image Is Rotated 90 Degrees
  • 131

    Image Prints in Black-And-White
  • 132

    Printer Isn't in the Chooser
• 133

  Windows Printing Problems
  • 134

    Phaser 840/850/860/8200 Color Printer - Service Manual

135

Diagnostics, Adjustments and NVRAM

• 135

  Front Panel Shortcuts
  • 137

    Hidden Service Menu
• 138

  Built-In Diagnostics (Phaser 860 Only)
• 139

  Diagnostic Menu Map
• 142

  Check Menu Value Keys and Descriptions (Phaser 860 Only)
  • 143

    Check Menu Value Key
  • 151

    Check Value Menu Parameters
• 152

  Adjustments
  • 152

    Printing Service Test Prints
  • 152

    Printing the Configuration Page
  • 153

    Selecting Duplex (2-Sided) Oil Chase
  • 153

    Selecting Envelope Oil Chase
  • 153

    Center Image
  • 154

    Locking the Printhead
  • 155

    Process Belt Tension Adjustment
  • 156

    Exit Roller Drive Belt Tension Adjustment
  • 158

    Y-Axis Belt Tension Adjustment (Phaser 840 Printer)
  • 160

    Y-Axis Belts Tension Adjustment (Phaser 850/860 Printer)
  • 162

    Printhead-To-Drum Spacing Adjustment (Phaser 840 Printer Only)
  • 165

    X-Axis Scale Adjustment
  • 166

    Cap/Wipe/Purge Assembly Belt Adjustments
  • 168

    Drum Position Encoder Gap
  • 170

    Transfix Roller Pressure Spring Adjustment
• 171

  Vacuum Check (Phaser 840/850 Only)
• 171

  Connecting the Vacuum Gauge to the Printer
• 172

  Resetting NVRAM

175

Test Prints

• 175

  Test Print Menu
  • 176

    1: X-Axis Motion
  • 177

    2: Weak/Missing Jet
  • 177

    3: Color Bands, RGBK Dither
  • 178

    4: Reverse Text
  • 178

    5: Big Bands Hand-Fed OHP
  • 179

    6: 66% Gray, Dot Size Uniformity
  • 180

    7: Manuf. Dot Position (Scanner)
  • 180

    8: YMCKRGB Solid Fills
  • 181

    9: Drum Seal
  • 181

    10: Manuf. Paper Path
  • 182

    11: Head-To-Drum Gap
  • 182

    Manuf X-Axis (Scanner)
  • 183

    13: Black Solid Fill
  • 183

    14: Red Solid Fill
  • 184

    15: Green Solid Fill
  • 184

    16: Blue Solid Fill
  • 185

    17: Cyan Solid Fill
  • 185

    18: Magenta Solid Fill
  • 186

    19: Yellow Solid Fill
  • 186

    20: OHP Color Bands
  • 187

    21: Primary Solid Fills 10X
  • 187

    22: Manuf. Skew Margins
  • 187

    23: Manuf. Banding

189

Cleaning and Maintenance

• 190

  Cleaning
  • 191

    Pick Roller Cleaning Method
  • 191

    Cleaning Page (Phaser 840 Printer Only)
  • 191

    Vacuum
  • 191

    Drum Temperature Sensor
• 192

  Maintenance
  • 192

    Maintenance Roller
  • 192

    Waste Tray
  • 192

    Maintenance Kit Life
• 193

  Lubrication
• 194

  Inspection

195

Key FRU Removal and Replacement

• 196

  Main Board and Its Components
• 196

  Removing the Phaser 840 Printer Main Board
• 197

  Removing the Phaser 850 Printer Main Board
• 199

  Power Supply
• 199

  Removing the Power Supply
• 200

  Power Control Board
• 200

  Removing the Power Control Board
• 201

  Upper Feed Roller Assembly
• 201

  Remove the Upper Feed Roller Assembly (Left Side)
• 203

  Paper/Drum Heater
• 204

  Drum/Transfix Assembly
• 205

  Removing the Drum Transfix Assembly (Left Side)
• 206

  Removing the Drum/Transfix Assembly (Right Side)
• 208

  Drum Position Sensor Assembly (Phaser 840 Printer)
• 209

  Removing the Drum Position Sensor Assembly (Phaser 840 Printer)
• 210

  Drum Position Sensor Assembly (Phaser 850/860)
• 212

  Printhead
• 215

  X-Axis Motor and Drive Assembly
• 216

  Y-Axis Belt Drive Assembly (Phaser 840 Printer)
• 216

  Removing the Y-Axis Belt Drive Assembly (Phaser 840 Printer)
• 217

  Y-Axis Belt Drive Assembly (Phaser 850/860 Printer)
• 218

  Wiring Diagrams
• 218

  Cap/Wipe/Purge Assembly (Phaser 840 Printer)
• 220

  Cap/Wipe/Purge Assembly (Phaser 850/860 Printer)
• 220

  Removing the Lower Cap/Wipe/Purge Retainer Clip
• 221

  Removing the Lower Cap/Wipe/Purge Retainer Clip

223

FRU Parts List

• 224

  Cabinet Fru's
• 224

  Cabinet Frus
• 225

  Cabinet Frus
• 226

  Imaging Fru's
• 226

  Imaging Frus
• 228

  Paper Path Fru's
• 228

  Paper Path Frus
• 229

  Paper Path Frus
• 230

  Motor and Fan Frus
• 231

  Motor and Fan Frus
• 232

  Circuit Board Frus
• 234

  Solenoid and Clutch Frus
• 235

  Solenoid and Clutch Frus
• 236

  Gear and Belt Frus
• 237

  Gear and Belt Frus
• 238

  Sensor and Flag Frus
• 239

  Sensor and Flag Frus
• 240

  High-Capacity Paper Tray Assembly
• 241

  High-Capacity Paper Tray Frus
• 242

  Service Tools
• 243

  Supplies and Accessories
• 246

  Parallel Cable

250

Phaser 840/850/860/8200 Color Printer - Service Manual

251

Wiring Diagrams

257

Phaser 8200 Color Printer Addendum

• 257

  Phaser 8200 Printer Configurations
• 257

  Hardware Updates
• 257

  Internal Pages and Menu Items
• 258

  Inks
• 258

  Memory
  • 258

    New Ink Sticks

259

Appendix

• 260

  On-Site Printhead Troubleshooting Checklist
• 260

  Initial Checklist
• 266

  On-Site Electronics Troubleshooting Checklist Phaser 840/850
• 269

  Z840/Z850 Electronics Troubleshooting Guide
• 277

  On-Site Printhead Troubleshooting Checklist
• 277

  Phaser 860/8200
• 282

  On-Site Electronics Troubleshooting Checklist Phaser 860