Canon LBP-1260, Руководство по обслуживанию

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CHAPTER 2
.
AND TIMING
.
This chapter describes the printer functions, the relationships between mechanisms and
circuits, and the timing of operations. Mechanical linkages are indicated by black and
white lines
of control signals by solid arrows and the flow of
groups of signals by outline arrows
active-high signal is indicated by or by a signal name without a slash in front of it,
such as An active-low signal is indicated by or by a signal name with a slash in
front of. such as
A signal that is or has a name without a slash is active at the supply voltage level
(indicating that the signal is being output), and inactive at ground level that the
signal is not being output).
A signal that is or has a slash in front of its name is active at ground level, and
inactive at the supply voltage level.
There is a microcomputer in this printer. But as the internal operatlon of the
microcomputer cannot be checked, an explanation of the operation of the microcomputer
has been left out.
As it is assumed that no repair will be made to customer circuit boards, the explanation
of board circuits is limited to an outline using block diagrams. So there are two types of
circuit explanation: everything from the sensor to the input sections of the major circuit
boards, everything from the output sections of the major boards to the loads.
These are explained with block diagrams according to the function.
BASIC!
OPERATION . . . . . . . . . . . . . . . .
II.
SYSTEM..... 2-7
III. SYSTEM.
IV. PICR-UP/FEED SYSTEM . . . . . . . .
SYSTEM
VI.
VII. FEEDER . . . . . . . . . . .
VIII, PAPER FEEDER