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

2 half dots

3 half dots

(columns per line)

(42 / 35)

(40 / 33)

 

2-8

Print direction

Uni-direction

Bi-direction

2 - 7

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