Compaq.com - Compaq Presario Maintenance and Service Guide - 3500 Series
United States December 9, 2002
Maintenance & Service Guide
Presario 3500 Series Personal Computers
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Connector Pin Assignments
This section contains the connector pin assignments for the Presario 3500 series
of personal computers.
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
Universal Serial Bus
Connector
Pin Signal
1
2
3
4
- Data
+Data
Ground
+5 VDC
Keyboard
Connector
Pin Signal
1
2
3
4
5
6
Data
Unused
Ground
+5 VDC
Clock
Unused
Mouse
Connector
Pin Signal
1
2
3
4
5
6
Data
Unused
Ground
+5 VDC
Clock
Unused
VGA Monitor
Connector
Pin
Signal
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Red Analog
Green Analog
Blue Analog
Volume Up
Ground
Ground Analog
Ground Analog
Ground Analog
+5 VDC
Ground
Volume Down
DDC Data
Horizontal Sync
Vertical Sync
DDC Clock
Line In
Connector
Connector
Stereo 1/8" Miniphone
Speaker/Headphone Out
Connector
Connector
Stereo 1/8" Miniphone
Microphone
Connector
Connector
Stereo 1/8" Miniphone
Phone Line to Wall Jack
Connector
Pin Signal
1
2
3
4
Unused
Tip
Ring
Unused
Phone Line to Phone
Connector
Pin Signal
1
2
3
4
Unused
Tip
Ring
Unused
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