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Maintenance & Service Guide
Presario 1900 Series
Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925

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Connector Pin Assignments

This appendix provides connector pin assignment tables for Compaq Presario 1900 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 (*).

 

Parallel Connector

 

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

 

Serial Connector

Connector Pin Signal
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

Keyboard/Mouse Connector

Connector Pin Signal
1

2

3

4

5

6

Data

Not defined

Ground

+5 VDC

Clock

Not defined

 

External VGA Monitor Connector

Connector Pin Signal
  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

 

Universal Serial Bus Connector

Connector Pin Signal
usb.gif (900 bytes) 1 Ground

2 D+

3 D-

4 Power

 

 

Modem Connector

Connector Pin Signal
ext15.gif (1696 bytes) 1

2

3

4

5

6

Unused

Unused

Tip

Ring

Unused

Unused

 

This information was not available at time of publication.

Port Replicator Connector

ct.gif (3293 bytes)

Pin Signal Pin Signal Pin Signal Pin Signal

 

This information was not available at time of publication.

LAN Connector

 

 

 

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