Panasonic Workio DP-3510, Service Manual

Page: 580 / 858

580
JAN 2006 Ver. 5.2
DP-3510/3520/3530/4510/4520/4530/6010/6020/6030
11.1.4. Punch Unit (Option) Operation
11.1.4.1. Basic Operation
This chapter discusses the purpose and role of each of the Punch Unit's functions, and the principles of
operation used for the Punch Unit mechanical and electrical systems. It also explains the timing at which
these systems are operated.
The symbol in drawings indicates transmission of mechanical drive, and signals marked by
together with the signal name indicates the flow of electrical signals.
In descriptions of digital circuits on the Punch Unit, "1" indicates a high signal voltage level, while "0"
indicates a low signal voltage level. Voltage values differ according to the circuits.
Descriptions in this chapter also assume that PCBs will not be repaired at user sites. For this reason,
descriptions of circuits on PCBs is limited to block diagrams. Two types of block diagrams are provided for
separate functions: diagrams indicating details from sensors up to input sections of major PCBs, and
diagrams indicating details from the output sections of major PCBs up the components.
11.1.4.1.1. Outline
The Punch Unit (option) is attached on the feed path between the Copier and the Finisher.
The Punch Unit does not have a paper feed mechanism. Paper from the Copier is fed by feed drive from the
Finisher via the Punch Unit. When the trailing edge of the paper from the Copier reaches the Punch Unit,
the paper stops temporarily, and the Punch Shaft is rotated to punch the trailing edge of the paper. This
operation is controlled by the Finisher Controller PCB, and each of the parts on the Finisher is driven by the
Punch Driver PCB.
Fig. 4-001
Finisher unit control system
Punch Dr
iv
er PCB
Horizontal
registration
drive
system
Punch
drive
system