Canon NP6621 Service Handbook page 7

B. Feeding Faults............................................5-5
1. Double Feeding ................................... 5-5
2. Wrinkles ............................................... 5-5
C. Paper Deck ................................................ 5-6
1. Pick-up fails (from deck). ..................... 5-6
2. Paper jams when pick-up is from the
paper deck. .......................................... 5-7
CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF
A. Sensors ...................................................... 6-2
B. Clutches, Solenoids,
and Switches ............................................. 6-4
C. Motors, Heaters, and Lamps ..................... 6-6
D. PCBs .......................................................... 6-8
A. Outline ....................................................... 7-1
B. Using Service Mode .................................. 7-1
C. Control Display Mode ('1') ......................... 7-3
D. I/O Mode ('2') ............................................. 7-6
A. Copier Self Diagnosis ................................ 8-1
B. Self Diagnosis on the Cassette Feeding
Unit ............................................................ 8-4
A. GENERAL TIMING CHART ..................... A-1
B. SIGNALS AND ABBREVIATIONS ........... A-2
C. GENERAL CIRCUIT DIAGRAM ............... A-5
THE ELECTRICAL PARTS
CHAPTER 7 SERVICE MODE
CHAPTER 8 SELF DIAGNOSIS
APPENDIX
3. Double feeding (paper deck). .............. 5-8
4. Wrinkling (paper deck). ........................ 5-8
5. The 'ADD PAPER' message fails to
turn off (paper deck). ........................... 5-9
6. The lifter fails to rise (paper deck). .... 5-10
E. Cassette Feeding Module-A2 .................. 6-10
F. Cassette Feeding Unit-K1 ....................... 6-12
G. Paper Deck Pedestal-K1 ......................... 6-14
H. Variable Resistors (VR) and
Check Pins by PCB. ................................ 6-16
E. Adjustment Mode ('3') .............................. 7-10
F. Operation/Inspection Mode ('4') .............. 7-13
G. Machine Settings Mode ('5') .................... 7-14
H. Counter Mode ('6') ................................... 7-16
C. RDF/ADF Self Diagnosis ........................... 8-5
D. Sorter Self Diagnosis ................................. 8-6
D. SPECIFICATIONS .................................... A-7
I. Copier .................................................. A-7
II. Cassette Feeding Module-B2/
Cassette Feeding Module-A2/
Cassette Feeding Unit-K1 ................ A-11
III. Paper Deck Pedestal-K1 .................. A-11
E. SPECIAL TOOLS ................................... A-12
F. SOLVENTS/OILS ................................... A-13
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