View Full Version : Printer/scanner setup

14-08-2002, 01:07 PM
Hi, a friend has a Mustek 1200 scanner and a HP810c printer. The scanner is on a sisc card and the printer on the printer port. Why would this be done and can I plug the scanner into the printer port and the printer into the scanner? Are they compatible? I think the sisc driver may be causing problems and theyt don't use the scanner much.

14-08-2002, 01:13 PM
sisc card??

I assume you mead scsi (scussi) interface

No, scsi and parallel port are different things. The speed of transfer is superior in scsi, thats why it would have been used. Mustek did make scsi interface scanners.

14-08-2002, 01:19 PM
sorry I ment scsi. So your saying the scanner has a scsi interface and won't work on the parallel port?

14-08-2002, 01:30 PM
THat is exactly what he is saying!

14-08-2002, 01:52 PM
You will see the vast difference in pin-outs (not to mention protocol and voltages) between SCSI and LPT1

SCSI pin assignment
Pin 1: *REQ
Pin 2: *MSG
Pin 3: *I/O
Pin 4: *RST
Pin 5: *ACK
Pin 6: *BSY
Pin 7: Ground
Pin 8: *Data 0
Pin 9: Ground
Pin 10: *Data 3
Pin 11: *Data 5
Pin 12: *Data 6
Pin 13: *Data 7
Pin 14: Ground
Pin 15: *C/D
Pin 16: Ground
Pin 17: *ATN
Pin 18: Ground
Pin 19: *SEL
Pin 20: *Parity
Pin 21: *Data 1
Pin 22: *Data 2
Pin 23: *Data 4
Pin 24: Ground
Pin 25: Terminator Power

Printer port pin assignment
(o) pin 1 -Strobe
(x) pin 2 +Data bit 0
(x) pin 3 +Data bit 1
(x) pin 4 +Data bit 2
(x) pin 5 +Data bit 3
(x) pin 6 +Data bit 4
(x) pin 7 +Data bit 5
(x) pin 8 +Data bit 6
(x) pin 9 +Data bit 7
(i) pin 10 +Acknowledge
(i) pin 11 -Busy
(i) pin 12 +Paper out
(i) pin 13 +Select
(o) pin 14 -Auto feed
(i) pin 15 +Error
(o) pin 16 +Initialize
(o) pin 17 -Select input
(-) pin 18 Ground
... ... .. ...
(-) pin 25 Ground

Graham L
14-08-2002, 03:41 PM
You get more problems with scanners which use the printer port. :-( SCSI is much better. You can damage both parties if you plug SCSI and parallel units together.

15-08-2002, 01:30 PM
Thanks everyone, I'll stick with the existing setup.