Compaq.com United States

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

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Connector Pin Assignments

This appendix provides connector pin assignment tables for Compaq Presario 1200 Series Portable Computers. For more information on connectors, refer to the section on Rear Connectors.

NOTE:  The signals in all tables of this appendix are considered active high unless otherwise indicated by an asterisk (*).

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Parallel Connector

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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

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Serial Connector

Connector Pin Signal

 

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1

2

3

4

5

6

7

8

9

Carrier Detect

Receive Data

Transmit Data

Data Terminal Ready

Signal Ground

Data Set Ready

Ready to Send

Clear to Send

Ring Indicator

 

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Keyboard/Mouse

Connector Pin Signal

 

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1

2

3

4

5

6

Data 1

Data 2

Ground

+5 V

Clock 1

Clock 2

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External VGA Monitor

Connector Pin Signal

 

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1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Red Analog

Green Analog

Blue Analog

Not connected

Ground

Ground Analog

Ground Analog

Ground Analog

Not connected

Ground

Monitor Detect

DDC2B Data

Horizontal Sync

Vertical Sync

DDC2B Clock

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Universal Serial Bus

Connector Pin Signal

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1

2

3

4

+5V

Data -

Data +

Ground

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Modem

Connector Pin Signal

Modem Connector

1

2

3

4

5

6

Unused

Unused

Tip

Ring

Unused

Unused

 

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