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COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIMÉ AU JAPON)
viii
C. Pre-Registration Stationary Jam ...5-13
D. Separation Delay Jam ...................5-14
E. Separation Stationary Jam............5-14
F. Delivery Delay Jam........................5-15
G. Delivery Stationary Jam ................5-15
VII. DISASSEMBLY AND ASSEMBLY ......5-16
A. Pick-Up Assembly .........................5-16
1. Detaching the Pick-Up Roller
Unit ...........................................5-16
2. Detaching the Pick-Up Roller...5-19
3. Points to Note When Attaching
the Pick-Up Roller ....................5-20
4. Detaching the Pick-Up Clutch...5-20
5. Detaching the Separation Pad..5-21
6. Adjusting the Left/Right
Registration ..............................5-22
B. Multifeeder Assembly ....................5-23
1. Detaching the Multifeeder
Assembly..................................5-23
2. Detaching the Multifeeder
Pick-Up Roller Unit...................5-24
3. Detaching the Multifeeder
Pick-Up Roller ..........................5-25
4. Points to Keep Note When
Attaching the Multifeeder
Pick-Up Roller ..........................5-26
5. Detaching the Separation Pad..5-26
6. Detaching the Multifeeder
Drive Unit..................................5-27
7. Detaching the Multifeeder
Clutch .......................................5-28
8. Positioning the Multifeeder
Assembly (paper guide plate
cam) .........................................5-29
9. Adjusting the Left/Right
Registration ..............................5-30
10.Points to Note When Attaching
the Multifeeder Assembly Rack
Plate .........................................5-30
C. Registration Roller Assembly ........5-31
1. Detaching the Registration
Clutch .......................................5-31
2. Detaching the Upper
Registration Roller....................5-31
3. Detaching the Lower
Registration Roller....................5-33
D. Feeding Assembly.........................5-34
1. Detaching the Feeding Belt......5-34
E. Cassette Unit.................................5-36
1. Detaching the Copier from
the Cassette Unit......................5-36
2. Detaching/Attaching the
Pick-Up Roller ..........................5-36
3. Detaching the Pick-Up Clutch ..5-36
CHAPTER 6 FIXING SYSTEM
I. BASIC OPERATIONS.........................6-1
A. Outline ...........................................6-1
B. Controlling the Fixing Heater
Temperature ..................................6-3
C. Controlling the Supply Power for
the Fixing Heater...........................6-5
D. Detecting Overheating at the End
of the Fixing Heater.......................6-6
E. Protection Mechanism...................6-6
1. Thermistor (TH1, TH2) .............6-6
2. Thermal Fuse (FU1).................6-6
3. Heater ON Detection Circuit
(230V model only) ....................6-6
F. Correcting Displacement of the
Fixing Film .....................................6-7
1. Outline ......................................6-7
2. Controlling the Fixing Film
Motor ........................................6-10
II. DISASSEMBLY AND ASSEMBLY ......6-11
A. Fixing Assembly ............................6-11
1. Construction1 ...........................6-11
2. Detaching the Upper Fixing
Unit ...........................................6-12
3. Detaching the Fixing Film,
Tension Roller, Drive Roller,
Fixing Cleaning Brush, and
Fixing Heater Unit ....................6-13
4. Points to Note When Attaching
the Fixing Film .........................6-20
5. Points to Note When Attaching
the Heater Connector...............6-20
6. Points to Note When Replacing
the Fixing Upper Unit ...............6-21
7. Adjusting the Fixing Film Drive
Roller Pressure.........................6-21
8. Detaching the Lower Fixing
Unit ...........................................6-23
9. Detaching the Separation
Claw/Lower Fixing Claw and
Fixing Cleaning Roller ..............6-24
10.Adjusting the Lower Fixing
Roller Nip..................................6-25
B. Delivery Assembly.........................6-27