This article is from the Apple II Csa2 FAQ, by Jeff Hurlburt with numerous contributions by others.
You can do Text printouts from your PC to IW-II by selecting the C-Itoh 8510 as your printer in Windows 3.1 up through at least ME. (Just go to settings: printers: new and select the c-itoh 8510.) The connection from the IW-II must go to a serial port-- e.g. COM-1 or COM-2. The cabling information shown below is from the the Imagewriter II manual. It's the connection to an RS-232C port. Including pin 5 in the jumpered pins on the 25-pin side is an addition. I'm not sure how important it may be. Perhaps it is added to allow diagnostic testing.) If you make your own, you need an 8 pin mini-DIN circular male connector, a DB25 female connector, and 5-conductor shielded cable. Up to 20 meters should be OK. Cable details as follows...8 pin 25 pin DTR 1 --------- *- 5 CTS * 5,6,8 are jumpered *- 6 DSR together at db25 end. - 8 DCD DSR 2 --------- 20 DTR TD- 3 --------- 3 RD SG 4 *------- 7 SG RD+ 8 ** ** 4 and 8 are jumpered together at 8-pin end. RD- 5 --------- 2 TDConnector SHIELD or pin 1 (PG) connected to cable shield on DB25 end. (Only one end of the cable shield needs to be connected to the connector shield.) One alternative is to use a IIe (SSC) to IW-II cable (part #590-0335) plus a standard NULL modem cable plus any gender changer connector (or 25 to 9 changer) necessary to connect to the PC COM port you want. The standard basic NULL modem 'cable' (or 'adapter') is two Dsub 25-pin female sockets, call them "A" and "B", wired back-to-back as follows (arrows indicate signal direction):Socket-A Socket-B TXD 2 -> 3 RXD RXD 3 <- 2 TXD RTS 4 -> 5 CTS CTS 5 <- 4 RTS DSR & DCD 6&8 <- 20 DTR GND 7 -- 7 GND DTR 20 -> 6&8 DSR & DCDThe two cables (plus gender/9-pin adaptors as needed) give you the connection described in the IW-II manual. A CrossWorks cable (plus adaptors as needed) is supposed to work, too. Either the homebrew cable or one of the combinations of existing cables mentioned should allow a hardware handshaking connection at 9600 baud. For the C-Itoh 8510 printer, go to "Properties" (in the Files menu). For Port settings, select the correct COM port. Data bits, parity, stop bits should be the usual 8-N-1. Speed or baud rate should be 9600. Flow control should be Hardware. On your IW-II, DIP switch 2-3 should be Up (open). Yet another alternative is to use a IIgs or Mac high-speed modem cable (e.g. part 950-0109) connected to a NULL modem plus adaptors as needed. This works fine; but, you will lose the hardware control lines and need to switch to Xon/Xoff handshaking. In "Properties", Flow control should be Xon/Xoff. On your IW-II, DIP switch 2-3 should be Down (closed).