Epson FX Series Product Support

EPSON PRINTERS
PIS (PrintTiming Signal) Sensor
Detection System Photo-electric conversion
Output system TTLlevel
Circuit See Fig. 1-23
+5V
IBOaSV. ®
Constant voltage
'—I
V—4 -- "
T "
3 3K
^ 4584
•j^o—o PTS Siflnal
3.3 Kn
m fn
Fig. 1-23. PTSCircuit
470 PF
m
Operation: The sensor detects the light through the slits on the sensor
timing disc under the carriage motor at the right side of
the printer mechanism durino operation of the carriage.
The PTS signal, thus detected, is used asthe reference of
the followmg conditions:
a. It is input to the slave CPU through IC8A and IC7C on
the main board to correct the carriage speed.
b. Itisinput to the main CPU through IC 8Aon the circuit
board to determine the print timmg.
c. It latches the status of the home position.
1-13
PE(Paper End)Sensor
Detection system
Svy/itch rating
Switch mode
PRINCIPLES OF OPERATION
Reed switch
10-50 mA. 5VDC ±5%
See table 1-7
TABLE 1-7. Switch Mode
Paper
Switch Moda
Presence
OPEN
Absence
CLOSE
Operation: In case of the paper out detection isvalid.
The paper end sensor is actuated when no paper remains.
The condition of the interface signals when paper end
sensor is actuated is as follows on table 1-8.
TABLE 1-8. State of Interface Signals
Signal namo
Connector CN1
Pin No.
Condition
ERROR 32 Low
PE (paper end)
12 High
BUSY
11
High
ACKNLG
10
No pulse is output

Epson FX Series Specifications

General

Brand	Epson
Model	FX Series
Category	Printer
Language	English