FECO CASHTILL # 5
 |
FECO: | CASHTILL # 5 |
| MODIFICATION No: | CASH NO 1 | |
| PRODUCT: | RS232 CASHDRAWER | |
| SUB-ASSEMBLY | N/A | |
| ESTIMATED MAN HOURS | ONE | |
| CLASS OF CHANGE: | MANDATORY
BY FIELD SERVICE AT NEXT VISIT
MANDATORY BY PRODUCTION ON COMMISSIONING MANDATORY BY REPAIRS ON FAILURE OR REWORK. |
|
| REASON FOR CHANGE: | TO OVERCOME THE PROBLEM OF SOLENOID BURN OUT. |
1.Reason
Problems have arisen with RS232 cash drawers
where the energising signal has remained high for long
enough to cause the solenoid to burn out.
2.Change
To overcome this problem, the cash drawer is
to be rewired so that the micro switch is in series with the
solenoid. See fig 1 & 2.
3.new operation
3.1.energising signal at pin 2 goes high.
3.2.the diode bridge gives 24 volt output to the solenoid, via the closed contacts of
the micro switch. The
solenoid energises.
3.3.the cash drawer opens, opening the micro switch, removing the power from the solenoid, so protecting it.
3.4.if the cash drawer is closed, whilst the energising signal at pin 2 is still high,
the solenoid will re-energise and
open it again, then de-energise.
(tech serv ref: 23/2/3)
4.circuit diagrams
5.figure 1 shows the existing circuit diagram, figure 2 shows the modified diagram.
The circuits are shown with the cash drawer
closed and the energising signal at pin 2 being low, i.e. not
present.
6.to modify
6.1.ensure the cash drawer is disconnected from the mains and data supply.
6.2.open the cash drawer, remove the cash tray and the frame with the front panel on.
Also remove the top
panel of the cash drawer, by removing the four
nuts from the studs inside the drawer. This gives access.
6.3.inside the cashdrawer at the rear, is the black control unit on the left and the
solenoid mechanism on the
right. See figure 3.
The left side of the solenoid plunger is
connected to the frame latching mechanism, with the microswitch
below it.
6.4.the four way connector block is mounted above the solenoid and is called 1 to 4,
left to right, for indentity
purposes. The top connector is called t and the
bottom b. See figure 4.
Note: the cable colours may not be identical.
6.5.the existing wiring to the connector block should be:
Microswitch connected to 1b & 2b
(wires black & blue)
Solenoid connected to 3b & 4b
(wires both red
Solenoid drive connected to 3t & 4t
(wires red & blue)
Rs232 connector pins 7 & 20 connected to 1t & 2t
(wires black & white)
6.6.disconnect lead from 1t and connect it to 2t. There should now be two leads connected to 2t.
6.7.disconnect lead from 4t and connect it to 1t.
6.8.disconnect lead from 2b and connect it to 4t.
6.9.see figure 5.
6.10replace the frame, but not the cash tray or top of the cash drawer; and test the unit.
7.testing
7.1.ensure the cashdrawer is in the open position, observe the solenoid in it's de-energised state.
7.2.connect the cash drawer to the data and mains supply.
7.3.observe the solenoid. Ensure that it is still de-energised.
7.4.with the cash drawer in the open position, enter:
Protocol n c=0 where n is the process number
And ensure that the solenoid is still de-energised.
7.5.now close the cash drawer and ensure that the frame latching mechanism holds the drawer shut.
7.6.enter protocol n c=1 and ensure cash drawer opens and solenoid de-energises.
7.7.try closing the cashdrawer, it should vibrate and open immediately.
7.8.enter protocol n c=0
7.9.close the cash drawer and ensure that it stays shut.
7.10.replace the cash drawer top panel and cash tray.
8.recording action
Affix a modification label adjacent to the serial number plate. Strike through but do not obliterate 1.