Maintenance & Service Guide
Presario 1660 Model
MSG Index Home Page Notice Preface Product Description Troubleshooting Illustrated Parts Catalog Removal & Replacement Procedures Specifications Pin Assignments Battery Pack Operations
Connector Pin Assignments
This appendix provides connector pin assignment tables for Compaq Presario 1660 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 | Signal Ground | |
* = Active low |
|
| |
Serial Connector
Connector 
Pin
Signal
1Carrier Detect
2Receive Data
3Transmit Data
4Data Terminal
5Ready
6Signal Ground
7Data Set Ready
8Ready to Send
9Clear 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 Analog |
| 2 | Green Analog |
| 3 | Blue Analog |
| 4 | Not |
| 5 | connected |
| 6 | Ground |
| 7 | Ground |
| 8 | Analog |
| 9 | Ground |
| 10 | Analog |
| 11 | Ground |
| 12 | Analog |
| 13 | Not |
| 14 | connected |
| 15 | Ground |
|
| Monitor |
|
| Detect |
|
| DDC2B Data |
|
| Horizontal |
|
| Sync |
|
| Vertical Sync |
|
| DDC2B Clock |
Universal Serial Bus
Connector
Pin
Signal
1+5V
2Data -
3Data +
4Ground
Modem
Connector | Pin Signal |
1Unused
2Unused
3Tip
4Ring
5Unused
6Unused
Port Replicator
Pin | Signal | Pin | Signal | Pin | Signal | Pin | Signal |
1 | N.C. | 21 | Printer Data 0 | 41 | N.C. | 61 | CTS |
2 | N.C. | 22 | Printer Data 1 | 42 | N.C. | 62 | DCD |
3 | Kb Clk 1 | 23 | Printer Data 2 | 43 | Switch A | 63 | DSR |
4 | Joystick Data A | 24 | Printer Data 3 | 44 | Switch B | 64 | TXD |
5 | Kb Data 1 | 25 | Printer Data 4 | 45 | Switch C | 65 | RTS |
6 | Joystick Data B | 26 | Printer Data 5 | 46 | Switch D | 66 | N.C. |
7 | Kb Clk 2 | 27 | Printer Data 6 | 47 | N.C. | 67 | Detect |
8 | Joystick Data C | 28 | Printer Data 7 | 48 | MIDI In | 68 | N.C. |
9 | Kb Data 2 | 29 | USB 0 - | 49 | MIDI Out | 69 | V. Sync |
10 | Joystick Data D | 30 | USB 0 + | 50 | +5V | 70 | Ground |
11 | Lp Select In | 31 | USB 1 - | 51 | +5V | 71 | H. Sync |
12 | Lp Paper End | 32 | USB 1+ | 52 | N.C. | 72 | Ground |
13 | Lp Initialize | 33 | Adapter In | 53 | N.C. | 73 | Blue |
14 | Lp Busy | 34 | Adapter In | 54 | N.C. | 74 | Ground |
15 | Lp Error | 35 | Adapter In | 55 | N.C. | 75 | Green |
16 | Lp Ack | 36 | Adapter In | 56 | Dock ID - | 76 | Ground |
17 | Lp Auto Feed | 37 | Adapter In | 57 | RXD | 77 | Red |
18 | Lp Strobe | 38 | Adapter In | 58 | Lp Select | 78 | Ground |
19 | DDC2BC | 39 | N.C. | 59 | RI | 79 | N.C. |
20 | DDC2BD | 40 | N.C. | 60 | DTR | 80 | N.C |
