Canon FINISHER - D1 Service Manual page 25

1. In outline diagrams,
and indicates electrical signal paths.
2. Signals in digital circuits are identified as '1' for High and '0' for Low. The
voltage of signals, however, depends on the circuit.
Nearly all operations of the machine are contorolled by microprocessors; the
internal workings of these processors are not relevant to the service person's work
and, therefore, are left out of the discussions. By the same token, no repairs are
prescribed for the PCBs at the user's premises; for this reason, PCBs are
discussed by means of block diagrams rather than circuit diagarams.
For the purpose of explanation, discussions are divided into the following: from
sensors to finisher controller PCB input ports; from finisher controller output ports to
loads; and minor control circuits and functions.
I. BASIC OPERATIONS ................ 2-1
A. Specifications ........................ 2-1
B. Outline of Electrial Circuitry ... 2-2
C. Inputs to and Outputs from the
Finisher Controller PCB......... 2-3
II. FEEDING/DRIVE SYSTEM...... 2-14
A. Outline .................................. 2-14
B. Feeding/Delivery ................. 2-19
C. Job Offset ............................. 2-22
D. Releasing the Knurled Belt
............................................ 2-29
COPYRIGHT © 1999 CANON INC.
CHAPTER 2
OPERATIONS
represents mechanical drive paths,
CANON FINISHER - D1 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
E. Buffer Path ........................... 2-34
III. CONTROLLING THE PADDLE
.................................................. 2-39
IV. CONTROLLING THE TRAY
AUXILIARY PLATE .................. 2-40
V. STAPLING ................................ 2-42
VI. TRAY MOVEMENT .................. 2-50
VII. FANS ........................................ 2-54
VIII. POWER SUPPLY ..................... 2-56
IX. DETECTING JAMS .................. 2-59