Service manual

Product Description
1-16
EPSON FX-880/FX-1180 Service Manual
The BUSY signal is active (HIGH) under the following conditions:
■
While receiving data.
■
When the input buffer is full.
■
When the INIT signal is active LOW.
■
When the /ERROR or PE signal is active.
■
During hardware initialization.
■
In the self-test mode.
■
In the adjustment mode.
■
In default-setting mode.
The /ERROR signal is active LOW under the following conditions:
■
If there is a release lever error.
■
If there is a paper-out error.
■
If there is a paper-jam error.
The PE signal is active HIGH under the following conditions:
■
If there is a paper-out error
DATA
STROBE
BUSY
ACKNLG
t
setup
t
ready
t
busy
t
stb
t
reply
t
ack
t
nbusy
t
nex t
t
hold
DATA (n)
DATA (n+1)
Figure 1-7. Data Transmission Timing