service Manual
Product Description
1.3.2.4 SCSI
Table 1-5. Messages
for SCSI Interface
Message
Code
Direction
Completion of
Command Complete
OOH
In
—
Disconnect
I
04H
I
In
I
I
Bus Device Reset
06H
out
Message Reject
07H
In/out
I
80H-FFH
I
In/out
I
No
I
1.3.2.5 SCSI
Pin Assignments
Table 1-6. Pin Assignments for the SCSI
Pin No.
Signal Name
Description
1-12, 14-25,
35-37,39,40,42
GND
—
Signal
ground
13
NC
—
Not
26-33
DBO-7
Data bus O-7
34
DBP
Data bus
38
TERMPWR
—
Termination power (+5 V)
41
I
Attention
43
BSY
Busy
44
ACK
Acknowledge
45
RST
I
Reset
46
MSG
o
Message
47
SEL
Select
48
CID
o
Control/Data
49
REQ
o
Request
50
o
input/Output
Rev.
A
Summary of Contents for ES-1200C Pro PC
Page 2: ...EPSON IMAGE SCANNER GT 9000 ES 1200C SERVICE MANUAL EPSON ...
Page 6: ...REVISION SHEET Revision Issue Date Revision Page Rev A June 29 1994 let issue o j c1 v ...
Page 66: ...Chapter 4 Adjustments No Adjustment is required in this product ...
Page 80: ... ...
Page 89: ...a g I 1 1 u In o N 7 g m N x In g Figure A 4 B027 PSE Board Circuit Diagram A 10 Rev A ...
