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I
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SIGNAL
NAME
INPUT PRiME
GDSTB
LD
LF
LFOC
LINE COUNT
PULSE &
RETURN
MOTOR
CONTROL
OSC
J!!
PMSOL
PMSOLD
PRIME
PWR PRM
mu
DESCRIPTION
A level from the input connector
causing the printer electronics
to be printed.
Gated Strobe - Gates strobe with
ACK whi ch prevents CLKTB1 unti 1
the rising edge of ACK and prevent
over-running the buffer.
Light Detect - Status signal to
input connector, indicating the
video circuit is not functioning.
Line Feed - 15 ms signal generates
PMSOL during line feed.
Low frequency oscillator (option),
allows 3-12 second paper movement
time out.
Level from input connector, switched
on and off by i nterva 1 1 i ne count
switch.
Signal to motor control solenoid
which turns on AC motor.
(Option)
Oscillator - 100KHz to 200 KHz
clock provides timing for printer
operati ons.
Paper Empty signal indicating a
paper empty condition.
Paper Movement solenoid - Used to
activate line feed solenoid during
a line feed, form feed or vertical
tab operation.
PMSOL Driver command to power
driver.
Prime signal, 100-400 usec pu1 se
from LSI chi p *l used to reset
printer logic.
Power Prime - Automatic prime gen-
era ted by turni ng on power to the
printer.
Remote Line Feed signal.
Operator
panel, LINE FEED switch option.
SOURCE
DESTINATION
P3-2/38-2
16-10/38-2
25-17/38-2
E8/38-2
16-17 /3B-2
P4-A/3B-1
32-13/38-1
25-30/38-2
C8/38-2
25-37/38-2
LF Count SW
26-8/3B-3
P3-P/3B-2
16-25/38-2
25-4/38-2
20-11/38-1
25-34/38-2
25-7/38-2
2-05/38-1
21-6/38-1
2-11/06-2
16-37/38-2
25~38/38-2
25-5 & 16-321
38-2
P3-2/38-2
25-33/38-2
SIGNAL
NAME
DESCRIPTION
SOURCE
DESTINATION
ROME2
Signal which enables half-step ROM
16-24/38-2
17-9/38-4
character generators.
ROMTB8
Enable signal used to select optional
21-12/38-3
17-13/38-4
character sets by use of TB8.
Rfi5SW
Ready to Print switch, informs LSI
P3-4/38-2
16-28/38-2
chip #2 that carriage is at left
position.
SELECT LAMP Operator panel, SELECT indicator.
SELSW
Opera tor pane 1, SELECT switch.
P3-W/38-2
25-3/38-2
SLCT'
Select
25-40/38-2
22-5/38-1
SLCT
Select status signal to input
22-6/:>8-1
16-40/38-2
connector.
SPEAKER
Speaker opti on
SRCL
Shift Register Clear - Signal from
16-38/38-2
18-2 & 19-2/
LSI chip 2 used to clear shift
38-3
registers.
STROBE
Strobe - A 500 usec pulse used to
23-1/38-1
E37/38-4
generate character address Signals
to the ROM during character printing.
m-m
Shift register outputs 1-7.
ME18, 19/38-3 ME4/38-4
TB8
Shift register output 8.
22-12/38-3
22-11/38-3
1M
Shift register output 8 used to
22-10/38-3
E-33/38-3
select additional ROM or individual
16-34138-2
expanded characters.
E-17/38-2
T88'
Same as TB8
18-4/38-3
TOFSW
TOP OF FORM switch.
Operator
P3-1/38-2
25-32/38-2
panel option.
UJ5SC
Expanded Character Mode - Command
25-15/38-2
E20-38-2
from LSI chip 1 to chip 2 to print
elongated characters.
VIDEO AMP
Video Amplifier Output - 1.4 ms
P3-9/38-1
23-5/38-1
square wave used to trigger STROBE
one shot.
VTH
Vertical Tab Hole - Vertical Format
P3-4/38-2
25-28/38-2
Unit option.
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