Epson LQ-510 - Page 42

PRINCIPLES OF OPERATION REV.-A
Figure 2-63.
Figure 2-64.
Figure 2-65.
Figure 2-66.
Figure 2-67.
Figure 2-68.
Figure 2-69.
Figure 2-70.
Figure 2-71.
Table 2-1.
Table 2-2.
Table 2-3.
Table 2-4.
Table 2-5.
Table 2-8.
Table 2-7.
Table 2-8.
Table 2-9.
Table 2-10.
Printhead Drive Circuit Block Diagram .............................. 2-66
Printhead Drive Circuit ..................................................... 2-57
Printhead Drive Waveforms
.............................................. 2-58
Print Timing
....................................................................
2-59
Relationship Between Head Driving Voltage and Print
Driving Pulse Width
.........................................................
2-59
A/D Converter Circuit
...................................................... 2-61
Host Interface .................................................................
2-63
EEPROM Circuit
..............................................................
2-64
Ribbon-Feed Mechanism
..................................................
2-65
LIST OF TABLES
Board Connector Summary ..............................................
2-1
Power Supply Applications ...............................................
2-10
Reference Voltages
..........................................................
2-43
Phase-Excitation Method ..................................................
2-47
Drive Sequence (2-2 Excitation)
........................................
2-47
Drive Sequence (1-2 Excitation)
........................................
2-47
Excitation Sequence
........................................................
2-54
E05A02 Gate Array Functions
...........................................
2-57
Scan Lines and DIP Switches
...........................................
2-62
Ribbon-Feed Gear Train
...................................................
2-66
2-iv
LQ-510