Terminal For The Sensors; Cleaning Of The Printing Head; Fig. 3.11 Sensor Connexion To The Connector; Tab. 3.6 Sensor Terminal Pin Description - ELCOM Euro-500 Handy Series Service Manual

Euro-500TX Handy
Terminal # Signal name
23 STB 3
24 DATA IN
25 VH
26 VH
27 VH
28 VH

3.7.2 Terminal for the sensors

Pin No. Terminal name
1 Photo-transistor collector
2 Led cathode
3 Led anode
4 Photo-transistor emitter
5 Head-up sensor - collector
6 Emitter of sensor + cathode of diode (GND)
7 Anode of diode
1
2
3
4
5
6
7

3.8 Cleaning of the printing head

1. Lift the printing head into top position and remove the paper tapes.
2. Clean the head or the cylinder using the cotton swab dipped in methanol, IPA, etc.
3. After cleaning, insert both paper tapes and lower the head into original position.
Caution:
1. Never clean the printing head using sandpaper, knives or scissors – this can lead to printing head dam-
age.
2. Ensure the alcohol evaporated entirely prior printing.
3. Clean the head only when the ECR is off.
4. Lift the head lightly as the printer mechanism allows. Do not use crude force.
32
Service manual
Function
Activation signal #3
Print data serial input
Power supply of printer power circuits
Power supply of printer power circuits
Power supply of printer power circuits
Power supply of printer power circuits
Tab. 3.5 Thermal head connector pin description (cntd.)

Tab. 3.6 Sensor terminal pin description

Fig. 3.11 Sensor connexion to the connector

Note
Paper sensor
Head-up sensor
Paper presence sensor
Head position sensor
© Elcom, s. r. o.