Circuit Board Settings

Several of the circuit boards in the printer have jumpers and/or DIP switches used to control the functionality of the board. These settings are described the following section.

Signal Interface Board Settings

The signal interface board has both jumpers and DIP switches used to control host interface interactions.

In general, the four jumpers on the signal interface board should remain as set at the fac- tory. The jumpers control the following:

Table 6-11. Signal Interface Board Jumper Settings

Jumper

Direction

Description

 

 

 

JP1

b-c

Baud rate crystal oscillator on IGS board 3.6854 MHz

 

a-b

Baud rate crystal oscillator on IGS board 7.3728 MHz

 

 

 

JP2

d-e

Unsolicited status reports enabled after power-on-reset

 

e-f

Unsolicited status reports disabled after power-on-reset

 

 

 

JP3

g-h

ERR (pin 32) error line output enabled

 

No jumper

ERR (pin 32) error line output disabled

 

 

 

JP4

i-j

PE (pin 12) out of paper line enabled

 

j-k

PE (pin 12) out of paper line disabled

 

 

 

The four DIP switches on the signal interface board should be changed based on the host interface being used.

For an RS-232C host interface: the DIP switches may be set in either direction; they have no effect on an RS-232C interface.

For an RS-422 host interface: set all four DIP swiches to ON by pushing them toward the exterior of the printer, as illustrated.

ON

1 2 3 4

Figure 6-8.RS-422 Host Interface DIP Settings

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Wiring Diagrams and Electrical Data