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Epson LQ-450

The Epson LQ-450 dot matrix printer was introduced in 1991 to replace the LQ-550. The main changes over the LQ-550 were an increase in the number of standard fonts and code page support. Two sets of DIP (Dual In-line Package) switches are located in a compartment above the main control panel. The switches control certain printer functions and default settings, the details of which are listed below.

Switch No.FunctionOnOff
SW1-1Character SetSee Character Tables
SW1-2Character SetSee Character Tables
SW1-3Character SetSee Character Tables
SW1-4Page LengthSee Page Length Table
SW1-5Page LengthSee Page Length Table
SW1-6TypefaceCondensedNormal
SW1-7Code TableGraphicItalic
SW1-8Cut Sheet FeederValidInvalid
SW2-1Not Used  
SW2-2Tear-off ModeValidInvalid
SW2-31" Skip-over perforationValidInvalid
SW2-4Auto-line feedAuto LFNo LF
SW2-5Select Buffer Capacity8KB1KB
SW2-6Graphics Print DirectionBi-directionalUni-directional
SW2-7Default Character PitchSee Character Pitch Table
SW2-8Default Character PitchSee Character Pitch Table

Character Table

The following table shows the international character sets that can be selected with these DIP switches when DIP switch SW1-7 is off.

Character SetSW1-1SW1-2SW1-3
USAONONON
FranceONONOFF
GermanyONOFFON
UKONOFFOFF
DenmarkOFFONON
SwedenOFFONOFF
ItalyOFFOFFON
SpainOFFOFFOFF

The following table shows the graphics character sets that can be selected with these DIP switches when DIP switch SW1-7 is on.

Character SetSW1-1SW1-2SW1-3
USA (PC437)ONONON
Multi (PC850)ONONOFF
PortugalONOFFON
Can-Fra (PC863)ONOFFOFF
Norway (PC865)OFFONON

Page Length Table

Page LengthSW1-4SW1-5
11"OFFOFF
12"ONOFF
8.5"OFFON
11.7"ONON

Character Pitch Table

Character PitchSW2-7SW2-8
10cpiOFFOFF
12cpiONOFF
15cpiOFFON
ProportionalONON