EPSON Stylus Color 400 Service Manual
Rev. A
1-17
Following lists “Notes” when using Parallel Interface.
Note1) “
Return GND pin” in the table means twist pair return and is used for all control signals
except for Logic H,+5V, Chassis, GND and NC. In this twist pair return, returning side
is connected to GND (16,33, 19-30 pin) for twist pair return. Also, these cables are shielded
wires and it is effective to connect to each chassis GND in the PC and printer for electrostatic
noise.
Note2)
Conditions for Interface are based on TTL level. Rise and fall time should be within 0.2
µ
s.
Note3)
Refer to the figure 1-8 for transmission timing of each signals.
Note4)
Do not perform data transmission ignoring /ACK or BUSY signal. (Perform the data transmission
after confirming that /ACK and BUSY signals are Low.)
Note5)
It is possible to perform the printing test including interface circuit without using equipment
from outside when 8-bit data signal(20-27 pin) is set to appropriate word code and connect
them forcefully to /ACK and /STRB.
[Data Transmission Timing for Forward Channel]
Parameter
Minimum
Maximum
tsetup
500ns
---
thold
500ns
---
tstb
500ns
---
tready
0
---
tbusy
---
500ns
tt-out*
---
120ns
tt-in**
---
200ns
treply
0
---
tack
500ns
10us
tnbusy
0
---
tnext
0
---
* Rise and fall time of every output signals.
** Rise and fall time of every input signals.
Typical time of tack is shown below.
Parallel I/F mode
Typical time of tack
High speed
2us
Normal speed
4us
Byte Data n
Byte Data n+1
Thold
Tsetup
Tstrb
Tnext
Tready
Tbusy
Treply
Tack
Tnbusy
Data
/STROBE
BUSY
/ACKNLG
Figure 1-8. Parallel Interface Timing Chart(Forward Channel)
Table 1-12. Maximum and Minimum Timing for Data Transmission
Table 1-13. Typical Time of Tack
Summary of Contents for Stylus Color 400
Page 5: ...REVISION SHEET Revision Issued Data Contents Rev A February18 1997 First issue ...
Page 126: ...Chapter 6 Maintenance Rev A 6 5 No 1 No 2 10mm 2mm 2mm No 3 No 11 GEAR 34 ...
Page 138: ...EPSON Stylus Color400 Service Manual Rev A A 9 Figure A 3 C206 PSB Board Component Layout ...
Page 139: ...Appendix Rev A A 10 Figure A 4 C206 PSE Board Component Layout ...
Page 140: ...EPSON Stylus Color400 Service Manual Rev A A 11 Figure A 5 C206 PNL Component Layout ...
Page 141: ...Appendix Rev A A 12 A 5 Exploded Diagrams Figure A 6 Stylus Color 400 Exploded Diagram 1 ...
Page 143: ...Appendix Rev A A 14 Figure A 8 Stylus Color 400 Exploded Diagram 3 ...
Page 145: ...EPSON SEIKO EPSON CORPORATION ...
