Service manual

Figure 2-50. Relationship Between the Head Driver Voltage
and the
Print Driving Pulse
Width....................... 2-51
Figure 2-51. A/D Converter Circuit
.............................................. 2-53
Figure 2-52. Host Interface
........................................................... 2-55
Figure 2-53. Ribbon Feed Mechanism
..........................................
2-57
Tables
Table 2-1.
Table 2-2.
Table 2-3.
Table 2-4.
Table 2-5.
Table 2-6.
Table 2-7.
Table 2-8.
Table 2-9.
Table 2-10.
Board Connector Summary
......................................
2-1
Power Supply Applications
.......................................
2-10
Reference Voltages
................................................... 2-35
Current Values for Reference
Voltages ................... 2-37
Phase Excitation
....................................................... 2-38
Drive
Sequence (2-2 Phase Excitation) ....................
2-39
Drive
Sequence (1-2 Phase Excitation)
.................... 2-39
Excitation Sequence (Clockwise for
Forward Paper Feeding)
........................................
2-46
Scan Lines and DIP Switches
................................... 2-54
Ribbon Feed Gear Train
........................................... 2-56
LQ-2OO/AP3000
2-iii