Parallel Interface - Epson Stylus Pro 9000 - Print Engine Service Manual

EPSON Stylus Pro 9000

7.2.11.1 Parallel interface


Transmission mode
8-bit parallel, IEEE-1284 compatibility mode

Synchronization
By STROBE pulse

Handshaking
By BUSY and ACKNLG signal

Logic Level
TTL compatible level (IEEE-1284 Level 1 device)

Adaptable connector
57-30360 (Amphenol) or equivalent 36-pin


Use a twisted-pair cable.
NOTE:


The BUSY signal is set HIGH before setting the -
ERROR signal LOW or the PE signal HIGH. The
BUSY signal remains HIGH until all these signals
return to their normal state.
Appendix

BUSY signal
HIGH under the following conditions:
During data entry
If input data buffer is full
If INIT signal is LOW
During hardware initialization
During a printer error
If parallel interface is not selected

ERROR signal
LOW if the following conditions occur:
Printer hardware error (fatal error)
Paper out error
Paper jam error
Ink out error
NOTE: The PE signal is HIGH during a paper out error.
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