Oki MICROLINE ML380 Maintenance Manual

Also see for ML380: User guide Handbook Parts Breakdown

40959201TX Rev.1 43 /2) Interface signalsPin No. Signal Code Signal Function1 Protective Ground PG — Frame ground2 Transmitted Data TD From printer Data from printer3 Received Data RD To printer Data to printer4 Request to Send RTS From printer Signal to indicate printer(Note 2) cannot receive data inprinter Busy/Ready protocol6 Data Set Ready DSR To printer Indicates that data can be(Note 3) sent (Printer receives dataafter confirming this signalas a SPACE.)7 Signal Ground SG — Signal ground11 Supervisory Send Data SSD From printer Signal to indicate printer(Note 2) cannot receive data inprinter Busy/Ready protocol20 Data Terminal Ready DTR From printer Signal to indicate printer(Note 2) cannot receive data inprinter Busy/Ready protocol5,8 to 10, — — — Unused12 to 1921 to 25Note: 1) Connector pin arrangement(Viewed from interface cable side)13251142) SSD signal output can be selected among pins 4, 11, 20 by the Menu.3) DSR signal valid invalid can be set by Menu.3) Electrical characteristics(a) Signal levelsRS-232C interface signal levels are as specified below, and meet the EIA StandardRS-232C.–15 to –3 V : LOW = OFF = LOGIC “1”+15 to + 3 : HIGH = ON = LOGIC “0”