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Oki B721 Maintenance Manual

Also see for ES7131: User manualUser manualUser manual

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Contents
  1. maintenance manual
  2. Table Of Contents
  3. Table Of Contents
  4. Table Of Contents
  5. Configuration
  6. System configuration
  7. Printer configuration
  8. Composition of optional items
  9. Specifications
  10. Interface specifications
  11. Network interface specifications
  12. USB host interface specifications
  13. Parallel interface specifications (Parallel installed Model only)
  14. Installation
  15. Cautions, and do's and don'ts
  16. Unpacking procedure
  17. Printer installation instructions
  18. List of components and accessories
  19. Assembly procedure
  20. setting the paper
  21. power supply conditions
  22. Installation and recognition confirmation of options
  23. Printing of the configuration report
  24. Connection methods
  25. configuring manually
  26. Checking of paper used by the user
  27. Component replacement
  28. Precautions on component replacement
  29. maintenance tool
  30. Method of component replacement
  31. Fuser unit
  32. Cover side-L
  33. PU/CU-Board
  34. How to remove Battery(PU/CU-Board)
  35. Power supply unit
  36. Motor FAN (PSU)
  37. HV-Board / Motor-FAN
  38. Plate-Assy-Duct
  39. Frame-Assy-OP-Panel
  40. Cover-Assy-Front
  41. Feeder-Assy-Regist / Clutch
  42. TR-Assy-Front
  43. TR-Assy-Rear
  44. Eject-Assy
  45. DC motor (fuser)
  46. Paper feed rollers
  47. Paper feed rollers (MP tray)
  48. W-LAN Board (for Wireless model only)
  49. Centro Board (for Centro model only)
  50. Portions Lubricated
  51. System maintenance menu (For maintenance personnel)
  52. Maintenance Utility
  53. User maintenance menu functions
  54. Self-diagnostic mode
  55. Normal self-diagnostic mode (Level 1)
  56. Switch scan test
  57. Motor and clutch test
  58. Test print
  59. Consumable counter display
  60. Print counter display
  61. Self-diagnostic function setting
  62. LED head serial number display
  63. BUZZER TEST
  64. Functions of buttons when/after power-on
  65. Setup after part replacement
  66. Manual density adjustment setting
  67. Boot Menu List
  68. Cleaning
  70. LED lens array cleaning
  71. Paper feed roller cleaning
  72. Troubleshooting procedure
  73. Important notes to start the repair work
  74. Troubleshooting methods
  75. Operator alarm
  76. Service call error list
  77. Preparation for troubleshooting
  78. LCD display error
  79. after the power is turned on
  80. Paper feed jam (Error 391: 1st Tray)
  81. Feed jam (Error 380)
  82. Error 390 paper feed jam
  83. Error 381 paper running jam
  84. Paper unloading jam (Error 382)
  85. Paper size error (Errors 400 and 401)
  86. Errors 167-177 fuser unit error
  87. Errors 122/127/128/918 motor fan error
  88. Print speed is slow. (Performance is low.)
  89. LED head cannot be recognized.(Errors 134)
  90. Errors 543 toner cartridge cannot be recognized
  91. Fuse cut error (Errors 155)
  92. Error 123 humidity sensor error
  93. Wiring diagram
  94. Troubleshooting the abnormal images
  95. Stain on white print. (Refer to Figure 6-2 B.)
  96. White print (Refer to Figure 6-2 C.)
  97. Black banding/black streaking in vertical direction
  98. Solid black printing
  99. Image Quality Issues
  100. Network troubleshooting
  101. Print operation is not possible
  102. Cannot create Certificate
  103. Other questions
  104. Restrictions when using Internet Explore 7
  105. Wireless Troubleshooting
  106. Paper cassette switches and paper size correlation table
  107. Connection diagrams
  108. Resistance value check
  109. Parts location
  110. F/W version number
Oki B721 Maintenance Manual Manual pdf 219 page image
45487001TH Rev.1 7-2 /Oki Data CONFIDENTIAL7. Connection diagrams7.1 Resistance value checkUnit Electrical circuit diagram, connection Part outside view Resistance valueID motorIP2Across both ends of IP2: 1Ω or lessFuser unit motorIP2Across both ends of IP2: 1Ω or less
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This manual is suitable for:
ES7131
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