Samsung ML-4550 Service Manual Manual pdf 67 page image
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Samsung ML-4550 Service Manual

Also see for ML ML-4551N: SpecificationsSolution guideQuick install guideUser guideDeclaration of conformity

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Contents
  1. service manual
  2. Table Of Contents
  3. Table Of Contents
  4. Table Of Contents
  5. Table Of Contents
  6. Safety Warning
  7. Caution for safety
  8. Handling Precautions
  9. Disregarding this warning may cause bodily injury
  10. ESD Precautions
  11. Product Overview
  12. Controller & S/W
  13. Paper Handling
  14. Consumables
  15. Options
  16. Model Comparison Table
  17. Printer Components
  18. Rear View
  19. Control Panel
  20. special features
  21. HVPS
  22. Feeding
  23. Transfer
  24. Print Cartridge
  25. Engine H/W Specifications
  26. Panel
  27. SMPS & HVPS board
  28. fuser ac power control
  29. Engine F/W
  30. How to use EDC (Engine Diagnostic Control) Mode
  31. Cover Status
  32. Sensor Status
  33. Motor Test
  34. Clutch / Sol
  35. Fuser Ctrl
  36. Deve Control
  37. Print Test and Option version
  38. Paper Path
  39. Clearing Paper Jams
  40. in the duplex unit area
  41. Sample Pattern
  42. Periodic Defective Image
  43. Error Messages
  44. General Precautions on Disassembly
  45. Transfer Roller
  46. MPF Ass'y
  47. Holder Pad Ass'y
  48. Retard Ass'y
  49. Feed2 Idle Unit
  50. Cover Right
  51. Main PBA
  52. Main Drive Ass'y
  53. DEVE Drive Ass'y
  54. Connector PBA
  55. Solenoid
  56. Rear Cover
  57. Cover Left
  58. Top Cover
  59. Open Cover
  60. Inner Cover
  61. Fuser Ass'y
  62. Duplex Solenoid Ass'y
  63. Exit Roller
  64. Toner sensor
  65. Toner Sensor PBA
  66. REGI Ass'y
  67. MP Pick Up Ass'y
  68. Pick Up & Feed2 Assy
  69. Engine Shield
  70. troubleshooting
  71. The cause and solution of Bad image
  72. horizontal black band
  73. light image
  74. uneven density
  75. stains on the back of page
  76. The cause and solution of the bad discharge
  77. paper rolled on the opc drum
  78. The cause and solution of the malfunction
  79. paper empty
  80. paper empty without indication
  81. defective motor operation
  82. vertical line getting curved
  83. Maintaining the toner cartridge
  84. redistributing toner cartridge
  85. replacing the toner cartridge
  86. The cause and solutions of bad environment of the software
  87. abnormal printing
  88. spool error
  89. vertical white line
  90. wrong print position
  91. fuser error
  92. Main Assembly
  93. Cover Assembly
  94. Frame Assembly
  95. Fuser Unit
  96. REGI Assembly
  97. Main Motor Assembly
  98. Deve Motor Assembly
  99. Cassette Assembly
  100. Duplex Unit
  101. SCF Unit
  102. System Block Diagram
  103. Connection Diagram
  104. reference information
  105. Acronyms and Abbreviations
  106. Select a location for the printer
  107. Sample Tests Patterns
Samsung ML-4550 Service Manual Manual pdf 67 page image
Service ManualDisassembly and Reassembly5-8 Samsung Electronics5.8 Main PBA1. Before you remove the Main PBA, you shouldremove: - Cover Right (Refer to the 5.7)2. Unplug the all Connectors, as shown below.3. The Connectors are located, as shown below.4. Remove two screws and take out the DummyBracket.5. Remove six screws and take out the Main PBA.DuplexSMPS/HVPSPBAPTLCover OpenThermistorLSU TonerSensorDEVEMotorDPX_SOLKey PanelHDD(Optional)NetworkCardMain MotorExit SensorConnectorPBAMemory(Optional)USBPortP1284PortConnectorSCFKey PanelBRACKETNIC HOLEMain PBA
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This manual is suitable for:
ML ML-4551NML-4551NDML-4550 SeriesML-4551NDRML-4551NR
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