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position switch at the left is coded S2 for general printer settings.
a.Bi-directional printing offset - S1
Pos. 1
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Pos. 2
Off
Off
On
On
Off
Off
On
On
Off
Off
On
On
Off
Off
On
On
Pos. 3
Off
Off
Off
Off
On
On
On
On
Off
Off
Off
Off
On
On
On
On
Pos. 4
Off
Off
Off
Off
Off
Off
Off
Off
On
On
On
On
On
On
On
On
Value
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
The offset values in above table are in unit of half dot.
The bi-directional printing offset actually is well adjusted
and requires no further action when a new printer is received.
However, after long period of usage some internal mechanical
clearance will vary. This clearance can be observed from the
offset pattern printed in bottom of self test.
Whenever the lower part of the long vertical lines is shifted
horizontally away from the upper part by about one dot width, the
offset value should be adjusted to move it back for decent print if
bi-directional print is engaged. Increasing the offset value by
changing the S1 setting can move the lower part to right and
decreasing the value moves the lower part to left.
b.Printer general setting – S2
Switch
Function ON OFF
2-1 Hand shaking mode
X-ON/X-OFF
DTR/DSR
2-2 Data bit 7-bit data 8-bit data
2-3 Parity check Parity check
No parity check
2-4 Parity selection Even parity
Odd parity
2-5 Baud rate (bps) 4800 9600
2-6 Busy on Buffer full Off line or Buffer full
2-7
Column spacing
(columns per line)
2 half dots
(42 / 35)
3 half dots
(40 / 33)
2-8 Print direction Uni-direction
Bi-direction