Service manual

RS-232 Serial Interface

The RS-232C Serial Interface uses a 9 pin D-sub male connector with the following configu-

ration:

Parallel Interface

The Parallel interface uses a 25-pin D-sub female connector with the following configura-

tion:

Pin Description

1 DCD (DATA Carrier Detect)

2 RXD (Received Data)

3 TXD (Transmitted Data)

4 DTR (Data Terminal Ready)

5 GND (Signal Ground)

6 DSR (Data Set Ready)

7 RTS (Request To Send)

8 CTS (Clear To Send)

9 RI (Ring Indicator)

Pin Description Pin Description

1 Strobe# 2 Data 0

3 Data 1 4 Data 2

5 Data 3 6 Data 4

7 Data 5 8 Data 6

9 Data 7 10 ACK#

11 Busy 12 Paper Empty

13 Select 14 Auto Feed#

15 Error# 16 Initialize#

17 Select In 18 Ground

19 Ground 20 Ground

21 Ground 22 Ground

23 Ground 24 Ground

25 Ground

USB Interface

The external USB (Universal Serial Bus) has the following configuration:

Pin Description

1 USB_VCCA

2 USBP0-

3 USBP0+

4 GND

Interface Pin Assignments