© Elcom s. r. o.
Service manual
Euro 2500
TX
37
4.6 Reinstalling the main PCB
4.6 Reinstalling the main PCB
Note: It is possible to reinstall the main PCB only when the ECR is turned off and the external power adapter is disconnected.
Keep the precautions for protection of electronic devices from the static electricity while reinstalling the main PCB.
1) Make sure, that the ECR is turned off and the external power adapter is disconnected.
2) Disconnect the main PCB case (chapter 4.2)
3) Release the screws holding the bottom row of connectors on the back connector panel.
4) Unplug all the main PCB connectors (EXTDISP2CON, EXTDISP1CON, DRW2CON, DRW1CON, and PC422CON).
5) Release the screw holding the connectors PCB.
6) Unplug the power switch connector (POWERCON).
7) Release the screws holding the main PCB.
8) Replace the main PCB.
9) Reassemble using the reverse steps.
10) Perform the ECR tests.
Caution: If any test reports an error, make sure first whether all the connectors are correctly plugged into correct places. Con-
nector interchange or their improper plugging are the most common cause of ECR or ECR parts malfunction.
4.7 EPROM reinstallation
4.7 EPROM reinstallation
1) Make sure, that the ECR is turned off and the external power adapter is disconnected.
2) Pull out the main PCB (chapter 4.6)
3) Carefully pull out the EPROM chip from its socket.
4) Place the JP1 jumper nearer to GND (RAM memory will be erased)
5) Place the JP1 jumper back to its original position.
6) Carefully socket the new EPROM chip into the correct position. Pay attention; do not damage the chip mechani-
cally or by static. Ensure that all the pins are touching the socket contacts.
7) Mount the main PCB back into the main ECR unit (chapter 4.2)
8) Enter the time and date into ECR.
Fig. 4.13: Outside view on the connector rows placed on the real connector panel
Power switch
PC-RS-422
connector
DRW1 and DRW2
connector PCB
DISP1 and DISP2
connectors
Fig. 4.14: Connector rows
Fig. 4.14: Connector rows
viewed from the inner side of
viewed from the inner side of
main PCB case
