Service Manual
Product Description
1.3 INTERFACE SPECIFICATIONS
has a
parallel interface and an
serial interface, one of
which can be selected in default setting mode. Auto selection is also available.
1.3.1 Parallel Interface
The parallel interface has two modes:
. Compatible mode
●
Reverse mode
1.3.1.1 Compatible Mode
Data format:
8-bit parallel
Synchronization:
By STROBE pulse synchronization
Handshaking:
By BUSY and
signals
Signal level:
level
level 1 device)
Adaptable comector:
36-pin 57-30360
or equivalent
Data transmission timing:
See Figure 1-6.
Note:
Transition time (rise time and fall time) of every input signal must be less than 0.2
BUSY
DATA
S T R O B E
—
.
Figure 1-6. Data Transmission Timing
The BUSY signal is active (HIGH) under the following conditions:
. During data reception (See Figure 1-6.)
●
When the
buffer is
. When the INIT input signal is active
. During a printer error
. During the self-test mode
. During the default setting mode
. When the parallel interface is not selected
The ERROR signal is active (LOW) under the following conditions:
. When a paper-out error occurs
. When a release lever operation error occurs
●
When a fatal error occurs
The PE signal is active (HIGH) under the following conditions:
●
When a
paper-out error occurs
Rev.
1-11
Summary of Contents for LQ-300 - Impact Printer
Page 1: ...EPSON TERMINAL PRINTER LQ 300 SERVICE MANUAL EPSON ...
Page 5: ...REVISION SHEET Revision Issue Date Revision Page Rev A September 28 1994 1st issue f v 1 ...
Page 34: ...c f ...
Page 101: ...Maintenance LQ 300 Service Manual Figure 6 1 LQ 300 Lubrication Points 6 2 Rev A ...
Page 110: ... Figure A 6 C130 PSB PSE Component Layout ...
Page 112: ...Appendix LC MMS vbeMantd Q ix iyii t v Figure A 8 LQ 300 Exploded Diagram 2 A 12 Rev A ...
Page 119: ... f ...
