Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1255, 1256, 1260, 1262, 1266, 1267, 1272, 1273, 1274, and 1275

Pin

 

Signal

 

Pin

 

Signal

 

 

 

 

 

 

 

1

 

Strobe*

 

10

 

Acknowledge*

 

 

 

 

 

 

 

2

 

Data Bit 0

 

11

 

Busy

 

 

 

 

 

 

 

3

 

Data Bit 1

 

12

 

Paper Out

 

 

 

 

 

 

 

4

 

Data Bit 2

 

13

 

Select

 

 

 

 

 

 

 

5

 

Data Bit 3

 

14

 

Auto Linefeed*

 

 

 

 

 

 

 

6

 

Data Bit 4

 

15

 

Error*

 

 

 

 

 

 

 

7

 

Data Bit 5

 

16

 

Initialize Printer*

 

 

 

 

 

 

 

8

 

Data Bit 6

 

17

 

Select In*

 

 

 

 

 

 

 

9

 

Data Bit 7

 

18-25

 

Signal Ground

 

 

 

 

 

 

 

* = Active low

 

 

Return to the top.

 

 

 

 

 

 

 

 

 

 

Serial Connector

 

 

 

 

 

 

 

 

 

 

Connector

 

 

Pin

 

Signal

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

Carrier Detect

 

 

 

 

 

2

 

Receive Data

 

 

 

 

 

3

 

Transmit Data

 

 

 

 

 

4

 

Data Terminal Ready

 

 

 

 

 

5

 

Signal Ground

 

 

 

 

 

6

 

Data Set Ready

 

 

 

 

 

7

 

Ready to Send

 

 

 

 

 

8

 

Clear to Send

 

 

 

 

 

9

 

Ring Indicator

 

 

 

 

 

 

 

 

 

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