Basic Operation - Sharp AR-F15 Service Manual

PUNCHER UNIT (OPTION)

BASIC OPERATION

1. This chapter discusses the purpose and role of each of the puncher unit's functions, and the
principles of operation used for the puncher 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.
2. In descriptions of digital circuits on the puncher unit, "1" indicates a high signal voltage level,
while "0" indicates a low signal voltage level. Voltage values differ according to circuit.
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 dia-
grams 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 loads.
I. BASIC OPERATION .................... 4-1
A. Outline ....................................... 4-1
B. Inputs to and Outputs from
Punch Driver PCB ...................... 4-2
II. PUNCH OPERATION .................. 4-5
CHAPTER 4
III. POWER SUPPLY SYSTEM....... 4-14
A. Outline ....................................... 4-5
B. PUNCH OPERATION ................ 4-7
C. Horizontal Registration
Operation ................................. 4-11