Canon NP6251 Service Manual Manual pdf 94 page image
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Canon NP6251 Service Manual

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Contents
  1. system configuration
  2. Table Of Contents
  3. Table Of Contents
  4. Table Of Contents
  5. Table Of Contents
  6. I. FEATURES
  7. II. SPECIFICATIONS
  8. Performance
  9. Others
  10. B. Paper Deck-A1
  11. III. NAMES OF PARTS
  12. B. Cross Section
  13. IV. OPERATING THE MACHINE
  14. B. Extended Modes
  15. C. User Mode
  16. V. ROUTINE MAINTENANCE BY THE USER
  17. VII. IMAGE FORMATION
  18. basic operation
  19. I. BASIC MECHANISMS
  20. B. Outline of the Electrical Circuitry
  21. C. Basic Sequence of Operations
  22. Basic Sequence of Operations at Power-On (2/2)
  23. Basic Sequence of Operations
  24. Basic Sequence of Operations in Page Separation Mode
  25. D. Main Motor (M1) Control Circuitry
  26. Operation
  27. E. Inputs to the DC Controller
  28. F. Outputs from the DC Controller
  29. G. Inputs to and Outputs from Accessories
  30. I. OUTLINE OF OPERATION
  31. II. LENS DRIVE SYSTEM
  32. Moving the Lens
  34. III. SCANNER DRIVE SYSTEM
  35. Scanner Sensors and the Signals
  37. Movement of the Scanner in Page Separation Mode
  38. Cable
  39. Removing the Scanner Drive Cable
  40. Adjusting the Tension of the Scanner Drive Cable
  41. Adjusting the Scanner Home Position
  42. Positioning the Scanner Locking Solenoid (SL1)
  43. B. Lens Drive Assembly
  44. Removing the Lens Stage Temporarily
  45. Installing the Light-Blocking Belt Mount
  46. Removing the Lens X Direction Drive Motor
  47. Attaching the Lens X Direction Drive Belt
  48. Replacing the Light Blocking Belt
  49. Table Of Contents
  50. I. PROCESSES
  51. Control Method
  52. Potential Measurement Circuit
  53. B. Controlling the Intensity of the Scanning Lamp
  55. Making Checks
  56. C. Controlling the Primary/Transfer Corona Current
  57. Controlling the Transfer Corona Current
  58. D. Controlling the Separation/Pre Transfer Corona Current
  59. of the Separation/Pre-Transfer Corona Current
  60. E. Controlling the Blanking Exposure Lamp (LED)
  61. f. drum heater circuit
  62. cleaning mechanism
  63. a. scanning lamp assembly
  64. b. standard white plate
  65. c. pre-exposure lamp unit
  66. e. photosensitive drum
  67. f. potential sensor assembly
  68. h. pre-transfer charging assembly
  69. Outline
  70. k. developing assembly
  71. l. hopper assembly
  72. m. drum cleaner
  73. o. waste toner feeding assembly
  74. Table Of Contents
  75. b. cassette lifter operation
  76. b. lifter operation
  77. d. high-speed pick-up
  78. d. reversal delivery
  79. g. skipping operation
  80. vii. detecting jams
  81. registration roller delay jam
  82. viii. disassembly and assembly
  83. a. multifeeder assembly
  84. b. front paper deck assembly
  85. fixing system
  86. motor error rotation detection circuit
  87. Table Of Contents
  88. b. operation
  89. a. outline of power supply
  90. b. power supply circuit
  91. c. date/time display power supply
  92. b. control panel
  93. d. fan unit
  94. e. removing the counter assembly
  95. f. main motor assembly
  96. n. attaching the drive belt
  97. o. dc controller pcb
  98. r. power supply inlet assembly
  99. Table Of Contents
  100. b. pick-up
  101. c. detection of paper for the deck
  102. d. deck lifter
  103. f. controlling the deck motor
  104. b. paper deck
  105. c. drive system
  106. e. electrical system
  107. Table Of Contents
  108. a. image adjustment
  109. b. exposure system
  110. c. image formation system
  111. d. pick-up/feeding system
  112. e. fixing system
  113. f. electrical system
  114. a. initial checks
  115. b. sample image faults
  116. c. troubleshooting image faults
  117. a. troubleshooting malfunctions
  118. a. copy paper jams
  119. b. feeding faults
  120. f. pcbs
  121. check pins by pcb
  122. vii. service mode
  123. b. using service mode
  124. f. adjustment mode
  125. i. counter mode
  126. viii. self diagnosis
  127. c. sorter
Canon NP6251 Service Manual Manual pdf 94 page image
Figure 3-309Copy Start key ONScanner forward signalScanner motor drivesignalScanner speed controlsignalScanner stop signalINTR SCFW SCRVScanner home positionsensorScanner original leadingedge 1 sensorLSTR*2*1*1 Brakes to slow down.*2 Brakes to stop.COPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 3 EXPOSURE SYSTEM3-19Download service manual and resetter printer at http://printer1.blogspot.com
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This manual is suitable for:
NP6251NP6350
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