Compaq Presario 300 Presario 305 Series Maintenance and Service Guide - Page 70

Connector Pin Assignments

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Before You Begin Removal Sequence Product Description Presario 305 Model Specifications Troubleshooting Pin Assignments Parts Catalog Battery Operations Index Connector Pin Assignments This appendix provides connector pin assignment tables for Compaq Presario 305 Model 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 1 Strobe* 2 Data Bit 0 3 Data Bit 1 4 Data Bit 2 5 Data Bit 3 6 Data Bit 4 7 Data Bit 5 8 Data Bit 6 9 Data Bit 7 * = Active low Pin 10 11 12 13 14 15 16 17 18-25 Signal Acknowledge* Busy Paper Out Select Auto Linefeed* Error* Initialize Printer* Select In* Signal Ground Serial Connector Connector Pin Signal 1 Carrier 2 Detect 3 Receive 4 Data 5 Transmit 6 Data 7 Data 8 Terminal 9 Ready Signal Ground Data Set Ready Ready to Send Clear to Send Ring Indicator Keyboard/Mouse Connector Pin Signal 1 Data 1 2 Clock 2 3 Ground 4 +5 V 5 Clock 1 6 Data 2 External VGA Monitor Connector Pin Signal 1 Red 2 Analog 3 Green 4 Analog 5 Blue 6 Analog 7 Not 8 connected 9 Ground 10 Ground 11 Analog 12 Ground 13 Analog 14 Ground 15 Analog Not connected Ground Monitor Detect DDC2B Data Horizontal Sync Vertical Sync DDC2B Clock Connector Modem Connector Universal Serial Bus Pin Signal 1 +5V 2 Data 3 Data + 4 Ground Pin Signal 1 Unused 2 Unused 3 Tip 4 Ring 5 Unused 6 Unused

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Presario 305 Model
Before You Begin
Specifications
Parts Catalog
Removal Sequence
Troubleshooting
Battery Operations
Product Description
Pin Assignments
Index
Connector Pin Assignments
This appendix provides connector pin assignment tables for Compaq Presario 305 Model 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
Pin Signal
1
2
3
4
5
6
Data 1
Clock 2
Ground
+5 V
Clock 1
Data 2
External 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
Not
connected
Ground
Ground
Analog
Ground
Analog
Ground
Analog
Not
connected
Ground
Monitor
Detect
DDC2B
Data
Horizontal
Sync
Vertical
Sync
DDC2B
Clock
Modem
Connector
Pin Signal
1
2
3
4
5
6
Unused
Unused
Tip
Ring
Unused
Unused
Universal Serial Bus
Connector
Pin Signal
1
2
3
4
+5V
Data -
Data +
Ground