Canon NP7160 Service Manual Manual pdf 305 page image
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Canon NP7160 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. Table Of Contents
  7. Table Of Contents
  8. Table Of Contents
  9. general description
  10. I. FEATURES
  11. II. SPECIFICATIONS
  12. Performance
  13. Others
  14. III. NAMES OF PARTS
  15. B. Cross Section
  16. IV. OPERATING THE MACHINE
  17. B. User Mode
  18. VII. IMAGE FORMATION
  19. basic operation
  20. I. BASIC MECHANISMS
  21. B. Outline of the Electrical Circuitry
  22. C. Basic Sequence of Operations
  23. Basic Sequence of Operations at Copy Start
  24. D. Main Motor (M1) Control Circuitry
  25. E. Inputs to the DC Controller
  26. f. outputs from the dc controller
  27. I. OUTLINE OF OPERATION
  28. II. LENS DRIVE SYSTEM
  29. Motor Control Circuit
  30. Moving the Lens
  31. III. SCANNER DRIVE SYSTEM
  32. B. Scanner Motor Control Circuit
  33. E. Scanner Movement in Page Separation Mode
  34. IV. OTHERS
  35. V. DISASSEMBLY/ASSEMBLY
  36. A. Scanner Drive Assembly
  37. Removing the Scanner Drive Cable
  38. Routing the Scanner Drive Cable
  39. Adjusting the Position of the Mirror
  40. Adjusting the Tension of the Scanner Drive Cable
  41. B. Lens Drive Assembly
  42. Removing the Mirror Motor
  43. image formation system
  44. I. OUTLINE OF THE PROCESSES
  45. C. Controlling the Intensity of the Scanning Lamp
  46. Operation
  47. Protection Mechanisms
  48. D. Controlling the Primary/Transfer Bias
  49. E. Controlling the Developing/Separation Static Eliminator Bias
  50. Turning On/Off the Developing DC Bias
  51. AC Bias/Separation Eliminator Bias
  52. DC Bias to a Specific Voltage to Suit Copy Density
  53. F. Controlling the Blank Exposure Lamp
  54. Turning On the Blank Exposure Lamp in Reduce Mode
  55. d. monitoring the waste toner box
  56. e. control by the cleaner thermistor
  57. f. auto density adjustment (ae)
  58. a. scanning lamp assembly
  59. b. exposure assembly
  60. Removing the Drum Unit
  61. Cleaning the Photosensitive Drum
  62. D. Primary Charging Assembly
  63. E. Transfer Charging Assembly
  64. F. Charging Wire
  65. Adjusting the Height of the Charging Wires
  66. G. Developing Assembly
  67. Removing the Developing Cylinder
  68. Table Of Contents
  70. II. PICK-UP FROM THE CASSETTE
  71. C. Operation of the Cassette Lifter
  72. D. Detecting the Size of the Cassette
  73. Detecting the Cassette Size
  74. III. PICK-UP FROM THE MULTIFEEDER
  75. B. Detecting the Size of Paper in the Multifeeder
  76. IV. CONTROLLING THE REGISTRATION CLUTCH
  77. V. DETECTING JAMS
  78. Registration Delay Jam
  79. Delivery Delay Jam
  80. VI. DISASSEMBLY/ASSEMBLY
  81. A. Pick-Up Assembly
  82. b. multifeeder assembly
  83. d. cassette assembly
  84. fixing system
  85. A. Outline
  86. B. Controlling the Fixing Temperature
  87. C. Error Detection Circuit
  88. Surface Temperature of the Fixing Upper Roller
  89. II. DISASSEMBLY/ASSEMBLY
  90. A. Fixing Assembly
  91. Removing the Fixing Heater
  92. Removing the Thermal Switch Assembly
  93. Removing the Main Thermistor
  94. Removing the Fixing Upper Roller
  95. Removing the Fixing Lower Roller
  96. Adjusting the Nip
  97. B. Delivery Assembly
  98. Removing the Delivery Roller
  99. Table Of Contents
  100. II. POWER SUPPLY
  101. B. Power Supply Circuitry
  102. Drum Heater, and Accessory Cassette Heater
  103. C. Protection Mechanisms of the Power Supply Circuitry
  104. III. DISASSEMBLY/ASSEMBLY
  105. A. External Covers
  106. Removing the Right Door
  107. Removing the Upper Left Cover
  108. Removing the Lower Inside Cover
  109. B. Control Panel
  110. C. Copyboard Glass
  111. d. fans
  112. e. counter assembly
  113. g. dc controller pcb
  114. supply pcb
  115. j. lamp regulator pcb
  116. I. SELECTING THE SITE
  117. II. UNPACKING AND INSTALLATION
  118. B. Removing the Metal Fixings
  119. C. Mounting the Drum Unit
  120. D. Cleaning the Parts and Making Checks
  121. E. Checking the Images/Operations and User Mode
  122. F. Supplying Toner
  123. III. RELOCATING THE MACHINE
  124. IV. INSTALLING THE CONTROL CARD IV N
  125. V. INSTALLING THE REMOTE DIAGNOSTIC DEVICE II
  126. VI. INSTALLING THE ACCESSORY COUNTER
  127. VII. INSTALLING THE ACCESSORY HEATER
  128. B. Mounting the Cassette/Drum Heater
  129. C. Installing the Mirror Heater
  130. I. PERIODICALLY REPLACED PARTS
  131. II. CONSUMABLES AND DURABLES
  132. III. SCHEDULED SERVICING CHART
  133. IV. SCHEDULED SERVICING TABLE
  134. Table Of Contents
  135. I. GUIDE TO TROUBLESHOOTING TABLES
  136. A. Image Adjustment Basic Procedure
  137. B. Points to Note for Scheduled Servicing
  138. II. STANDARDS AND ADJUSTMENTS
  139. B. Exposure System
  142. C. Image Formation System
  144. D. Pick-Up/Feeding System
  145. e. fixing system
  146. f. electrical system
  147. iii. image faults
  148. B. Image Fault Samples
  149. C. Troubleshooting Image Faults
  150. The copy is foggy. (overall)
  151. The copy is foggy. (vertical)
  152. The back of the copy is soiled
  153. The copy has faulty fixing
  154. The copy has a displaced leading edge
  155. The copy has a blurred image
  156. The copy has poor sharpness
  157. The copy is blank
  158. IV. TROUBLESHOOTING MALFUNCTIONS
  159. E800
  160. AC power is absent
  161. DC power supply is absent
  162. The scanner fails to move
  163. The lens fails to move
  164. The scanning lamp fails to turn on
  165. The pre-exposure lamp fails to turn on
  166. Pick-up fails. (cassette)
  167. The registration roller fails to rotate
  168. The fixing heater fails to turn on
  169. The Add Toner indicator fails to turn off
  170. The Waste Toner Box Full indicator fails to turn off
  171. The Add Paper indicator fails to turn off
  172. The Jam indicator fails to turn off
  173. The Set Control Card indicator fails to turn off
  174. a. copy jams
  175. Pick-Up/Feeding Assembly
  176. Fixing/Delivery Assembly
  177. Double Feeding
  178. a. sensors and switches
  179. and Solenoids
  180. c. heaters, lamps, and others
  181. d. pcbs
  182. Diodes, and Check Pins by PCB
  183. Power Supply PCB
  184. High-Voltage Power Supply PCB
  185. VII. SERVICE MODE
  186. C. Using Adjust Mode and Function Mode
  187. D. Display Mode [1]
  188. E. I/O Display Mode [2]
  189. F. Adjust Mode [3]
  190. G. Function Mode [4]
  191. H. Option Mode [5]
  192. I. Counter Mode [6]
  193. J. Application Mode [7]
  194. VIII. SELF DIAGNOSIS
  195. b. adf
  196. C. Sorter
  197. A. GENERAL TIMING CHART
  198. B. SIGNALS AND ABBREVIATIONS
  199. C. GENERAL CIRCUIT DIAGRAM
Canon NP7160 Service Manual Manual pdf 305 page image
COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 10–75CHAPTER 10 TROUBLESHOOTINGSymbol Name Notation DescriptionH1H2H3LA1LA2LA3CNT1CNT2RL1FU1TSW1TH1TH2TH3VZ1Fixing heaterCassette/drum heater (accessory)Mirror heater (accessory)Scanning lampPre-exposure lampBlank exposure lampTotal copy counterAccessory counterFixing heater power supply controlScanning lap overheating detectionFixing assembly overheating detectionFixing roller surface temperature detection 1Fixing roller surface temperature detection 2Ambient temperature detectionVaristorHeaterLampLEDCounterRelayThermal fuseThermal switchThermistorCleaner thermistorVaristorLEDCNTTable 10-603
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NP7160NP7161
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