Apple ImageWriter II - Manual (Page 36)

3 TxD- Transmit Data - Output
4 SG Signal Ground
5 RxD- Receive Data - Input
6 TxD+ Balanced Transmit + Output
7 NC No Connection
8 RxD+ Balanced Receive + Input
Shield PG Protective Ground
8-Pin Mini-Circular Connector Pinouts
Cable Connections
Mini-Circular Connector (RS 422/423) DB25-P (RS232-C) Symbol
1 6* DSR
1 8* DCD
2 20 DTR
3 3 RXD
4** 7 GND
5 2 TXD
6 — NC
7 — NC
8** — GND
Shield Shield
*Jumpered together at DB25
**Jumpered together at Mini-Circular Connector
Appendix D: Connecting to Other Apple Computers
This appendix shows you how to connect the ImageWriter II to the Macintosh XL, the Lisa Office System,
and the Apple III. Appendix D assumes that you have installed the ribbon and loaded the appropriate
paper into the printer. You should also have successfully self-tested the ImageWriter II. If you have not
completed these activities, see Chapter 2, “Basic ImageWriter II Setup.”
All three computers take the same serial interface cable, the Apple IIe Modem-8 Cable, Apple Part
Number A2C0311. Check to make sure you have the correct cable.
Apple IIe Modem-8 Cable
If your cable does not have the proper connectors at its ends, don’t try to make it fit; see your authorized
Apple dealer before continuing.
Important!
Your Apple computer and its peripheral devices are FCC-certified under test conditions that include use
of shielded cables and connectors between system components. It is important that you use shielded
cables and connectors to reduce the possibility of causing interference to radio, television, and other
electronic devices.
Regardless of which computer you’re connecting to, you can follow a few preliminary steps. Before
beginning, make sure that your computer and printer are turned off.
Make sure you have turned off both the computer and a peripheral device, such as a printer, before
connecting or disconnecting them. Connecting or disconnecting cables when the power is on can
damage your equipment.