Epson DFX-9000 Revision B
Product Description Basic specifications 25
The BUSY signal is active (high) under the following conditions:
When receiving data
When the input buffer is full
When the -INIT signal is active (low)
During hardware initialization
When the -ERROR or PE signal is active (active-low and active-
high, respectively)
In self test mode
In adjustment mode
In default-setting mode
The -ERROR signal is active (low) under the following conditions:
When there is a printer hardware error (fatal error)
When there is a paper-out error
When there is a cover open error
When there is a paper jam error
When there is a ribbon out error
When there is an incomplete paper change error
The PE signal is active (high) when there is a paper-out error
Table 1-20. Connector pin assignment, forward channel
Pin No.
Signal
name
Return
GND Pin
In/Out* Function description
1 -STROBE 19 In This signal is a strobe pulse. Input data is latched at the falling edge of this signal.
2 DATA1 20 In Parallel input data to the printer bit 0: LSB
3 DATA2 21 In bit 1
4 DATA3 22 In bit 2
5 DATA4 23 In bit 3
6 DATA5 24 In bit 4
7 DATA6 25 In bit 5
8 DATA7 26 In bit 6
9 DATA8 27 In bit 7: MSB
10 -ACKNLG 28 Out This signal (negative pulse) indicates that the printer has received data and is
ready to accept more.
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