Canon NP6251 manuals

NP6251

Brand: Canon | Category: Printer

Table of 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. Table Of Contents
10. Table Of Contents
11. I. FEATURES
12. II. SPECIFICATIONS
13. Performance
14. Others
15. B. Paper Deck-A1
16. III. NAMES OF PARTS
17. B. Cross Section
18. IV. OPERATING THE MACHINE
19. B. Extended Modes
20. C. User Mode
21. V. ROUTINE MAINTENANCE BY THE USER
22. VII. IMAGE FORMATION
23. basic operation
24. Holding Tray Feeding
25. B. Outline of the Electrical Circuitry
26. C. Basic Sequence of Operations
27. Basic Sequence of Operations at Power-On (2/2)
28. Basic Sequence of Operations
29. Basic Sequence of Operations in Page Separation Mode
30. D. Main Motor (M1) Control Circuitry
31. Operation
32. E. Inputs to the DC Controller
33. F. Outputs from the DC Controller
34. G. Inputs to and Outputs from Accessories
35. I. OUTLINE OF OPERATION
36. II. LENS DRIVE SYSTEM
37. Moving the Lens
39. III. SCANNER DRIVE SYSTEM
40. Scanner Sensors and the Signals
42. Movement of the Scanner in Page Separation Mode
43. Cable
44. Removing the Scanner Drive Cable
45. Adjusting the Tension of the Scanner Drive Cable
46. Adjusting the Scanner Home Position
47. Positioning the Scanner Locking Solenoid (SL1)
48. B. Lens Drive Assembly
49. Removing the Lens Stage Temporarily
50. Installing the Light-Blocking Belt Mount
51. Removing the Lens X Direction Drive Motor
52. Attaching the Lens X Direction Drive Belt
53. Replacing the Light Blocking Belt
54. Table Of Contents
55. I. PROCESSES
56. Control Method
57. Potential Measurement Circuit
58. B. Controlling the Intensity of the Scanning Lamp
59. Auto Exposure Control
60. Making Checks
61. C. Controlling the Primary/Transfer Corona Current
62. Controlling the Transfer Corona Current
63. D. Controlling the Separation/Pre Transfer Corona Current
64. Separation/ Pre-Transfer Corona Current
65. of the Separation/Pre-Transfer Corona Current
66. E. Controlling the Blanking Exposure Lamp (LED)
67. f. drum heater circuit
68. cleaning mechanism
69. A. Scanning Lamp Assembly
70. Removing the Thermal Fuse
71. C. Pre-Exposure Lamp Unit
72. D. Blanking Exposure Lamp Assembly
73. E. Photosensitive Drum
74. Replacing the Drum Heater
75. F. Potential Sensor Assembly
76. H. Pre-Transfer Charging Assembly
77. Separation Charging Assembly
78. J. Charging Wire
79. Stringing the Grid Wire of the Primary Charging Assembly
80. Adjusting the Height of the Charging Wire
81. Cleaning the Primary Charging Assembly Anti-Stray Sheet
82. K. Developing Assembly
83. Removing the Blade Unit
84. Cylinder and the Magnetic Seal
85. Cleaning the Developing Assembly Anti-Stray Sheet
86. L. Hopper Assembly
87. M. Drum Cleaner
88. Installing the Cleaning Blade
89. Installing the Side Seal
90. N. Separation Claw/Separation Claw Drive Assembly
91. O. Waste Toner Feeding Assembly
92. Table Of Contents
93. I. PICK-UP/FEEDING SYSTEM
94. II. CASSETTE PICK-UP
95. Outline
96. B. Cassette Lifter Operation
97. C. Identifying the Size of Copy Paper in the Cassette
98. Markings on the Width Guide Rail
99. Paper Size
100. Registering Paper Width Basic Value
101. b. lifter operation
102. d. high-speed pick-up
103. V. CONTROLLING THE REGISTRATION CLUTCH
104. VI. MAKING TWO-SIDED/OVERLAY COPIES
106. Outline of Operation
107. D. Reversal Delivery
108. Sequence of Reversal Delivery Operations
109. Sided/Overlay/Reversal Delivery Copies
110. Jogging Plate and the Trailing Edge Guide Plate
111. Detecting the Presence Absence of Copy Paper
112. F. Re-Pick Up from the Holding Tray
113. G. Skipping Operation
114. Outline of Operations
115. Skipping Operation (odd number of originals)
117. Reversal Delivery
118. VII. DETECTING JAMS
119. Registration Roller Delay Jam
120. Pick-Up Vertical Path Feeding 0/1 Delay Jam
121. Pick-Up Vertical Path Feeding 2 through 4 Delay Jam
122. Fixing Assembly Outlet Delay Jam
123. External Delivery Delay Jam
124. Internal Delivery Delay Jam
125. Holding Tray Inlet Delay Jam
126. Holding Tray Re-Pick Up Delay Jam
127. Holding Tray Registration Stationary Jam
128. VIII. DISASSEMBLY AND ASSEMBLY
129. A. Multifeeder Assembly
130. B. Front Paper Deck Assembly
131. Removing the Pick-Up Roller
132. Removing the Feeding Roller
133. Adjusting the Pressure of the Separation Roller
134. Orientation of the Separation Roller
135. Roller of the Cassette/Deck Pick-Up Assembly
136. Releasing Solenoid of the Cassette
137. Removing the Pick-Up Assembly from the Copier
138. Removing the Separation Roller
139. Roller Assembly of the Left Deck Pick-Up Assembly
140. Assembly
141. Construction
142. Removing the Registration Roller (upper rubber roller)
143. Removing the Fixing/Feeding Unit
144. Removing the Feeding Belt
145. H. Holding Tray Assembly
146. Removing the Holding Tray from the Copier
147. Removing the Holding Tray Registration Paper Sensor
148. Removing the Re-Pick Up Roller
149. Removing the Holding Tray Y Motor
150. Removing the Y Motor Home Position Sensor
151. Roller/Separation Belt Assembly
153. Removing the Separation Belt Assembly
154. Paper Deflecting Plate Drive Solenoid
155. Removing the Holding Tray X Motor
156. Removing the Holding Tray Paper Jogging Solenoid
157. Paper Jogging Guide Plate Assembly
158. the Holding Tray Assembly Paper Jogging Guide Plate
159. I. Holding Tray Feeding Assembly
160. Holding Tray Feeding Assembly
161. C. Controlling the Fixing Temperature
162. D. Reciprocating Mechanism for the Main Thermistor (TH1)
163. the Upper Separation Claw
164. F. SSR Error Detection Circuit for the Fixing Heater
165. G. Locking Operation (fixing/feeding unit)
166. H. Error Detection Circuit
167. Fixing Heater Error Activation Detection Circuit
168. Motor Error Rotation Detection Circuit
169. II. DISASSEMBLY AND ASSEMBLY
170. A. Fixing Assembly
171. Removing the Fixing Cleaning Belt
172. Installing the Fixing Cleaning Belt
173. Removing the Upper Fixing Unit
174. Removing the Fixing Heater
175. Installing the Fixing Heater
176. Installing the Upper Fixing Roller
177. Removing the Thermal Switch
178. Removing the Lower Separation Claw Assembly
179. Removing the Lower Roller
180. Adjusting the Nip (tightening the pressure adjusting nut)
181. Adjusting the Fixing Clutch
182. B. Delivery Assembly
183. Removing the Fixing/Feeding Assembly Locking Assembly
184. Paper Sensor and the Internal Delivery Paper Sensor
185. Removing the Internal Delivery Assembly Roller
186. Table Of Contents
187. I. CONTROL PANEL
188. LCD Processing
189. Automatic Control of LCD Contrast
190. Touch Switch Inputs
191. II. FANS
192. III. POWER SUPPLY
193. B. Power Supply Circuit
194. C. Date/Time Display Power Supply
195. IV. DISASSEMBLY AND ASSEMBLY
196. A. External Covers
197. Removing the Front Door
198. Removing the Inside Upper Cover
199. Removing the Fixing/Feeding Unit Front Cover
200. Sliding Out the Hopper Assembly
201. b. control panel
202. c. door switch assembly
203. d. fan unit
204. Removing the Cleaner Fan
205. Removing the Feeding Fan
206. F. Main Motor Assembly
207. G. Fixing/Waste Toner Drive Assembly
208. H. Main Drive Assembly (drum developing)
209. I. Vertical Path Drive Assembly
210. J. Pick-Up Drive Assembly
211. Removing
212. K. Duplexing Drive (1) Assembly
214. L. Lifter Drive Assembly
215. M. Cassette Pick-Up Drive Assembly
216. N. Attaching the Drive Belt
217. O. DC Controller PCB
218. P. DC Power Supply Assembly
219. Q. High-Voltage Transformer Assembly
220. R. Power Supply Inlet Assembly
221. paper deck-a
222. I. SIDE PAPER DECK
223. Outputs from the Side Deck Driver (1/1)
224. B. Pick-Up
225. Sequence of Operations (deck pick-up)
226. C. Detection of Paper for the Deck
227. D. Deck Lifter
228. Opening/Closing the Deck
229. Sequence of Operations (deck opening/closing)
230. Positioning the Roll
231. C. Drive System
232. Removing the Deck Main Motor (M101)
233. Removing the Deck Lifter Motor (M102)
234. Routing the Lifter Cable
235. D. Feeding System
236. Removing the Deck Pick-Up Roller
237. Removing the Deck Feeding Roller
238. Removing the Deck Separation Roller
239. Adjusting the Deck Separation Roller Pressure
240. E. Electrical System
241. Table Of Contents
242. I. SELECTING THE SITE
243. II. UNPACKING AND INSTALLING
244. A. Unpacking
245. B. Installing the Scanner
246. C. Installing the Fixing Assembly
247. D. Installing the AP Kit and the Charging Assemblies
248. E. Installing the Copy Tray
249. Replacing the Delivery Roller Leaf Spring
250. F. Checking the Developing Assembly
251. G. Installing the Pick-Up Assembly
252. H. Supplying Toner
253. i. connecting the rdf connector
254. III. RELOCATING THE MACHINE
255. IV. INSTALLING THE CONTROL CARD V
256. V. INSTALLING THE COPY DATA CONTROLLER-A1
257. installation procedure
258. B. Installing to the Copier
259. C. Checking the Operation
260. VI. INSTALLING THE REMOTE DIAGNOSTIC DEVICE II
261. I. PERIODICALLY REPLACED PARTS
262. II. CONSUMABLES AND DURABLES
264. Table Of Contents
265. a. image adjustment
266. b. exposure system
267. routing the scanner drive cable
268. c. image formation system
269. position of the roller electrode
270. d. pick-up/feeding system
271. e. fixing system
272. f. electrical system
273. a. initial checks
274. b. sample image faults
275. c. troubleshooting image faults
276. a. troubleshooting malfunctions
277. ac power is absent
278. dc power supply is absent
279. pick-up fails. (multifeeder)
280. the vertical path roller fails to rotate
281. the lens fails to move
282. pick-up fails. (paper deck-a)
283. a. copy paper jams
284. pick-up assembly
285. fixing/delivery assembly
286. cleaning assembly
287. b. feeding faults
288. a. sensors
289. c. motors and fans
290. d. clutches
291. f. pcbs
292. g. paper deck-a
293. check pins by pcb
294. ac driver pcb
295. control cpu pcb
296. holding tray driver pcb
297. potential measurement pcb
298. hvt1 pcb
299. hvt2 pcb
300. lamp regulator pcb
301. vii. service mode
302. b. using service mode
303. f. adjustment mode
304. h. options mode
305. i. counter mode
306. viii. self diagnosis
307. c. sorter

NP6251

Brand: Canon | Category: Copier

Table of 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

NP6251

Brand: Canon | Category: Copier