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depends on VA rating of standby power.
depends on how critical computer is
You may decide to not backup power for printers and scanners as they may be less critical during short power failures.
You may be able to not backup screen monitors power and just the desk top computer if not extremely critical and you just need to protect from short power failures. This loses the computer screen making it unusable but when the power returns the computer is still working. It reduces the power drain on the Standby Power Supply .
Time is also a requirement. The more you plug in the less standby power time you have.
At a guess the computer would drag about 400 Watts of power so if VA of standby power was rated at 400 VA then one 400 Watt unit.
Your standby power may have an over load protection and if overloaded will shut down.
It needs to replace the ink cartridge, you can no longer use it, does the printer continue printing even there has a message saying the black ink is out?? if Yes, it is normal for the cartridge if it is already CISS...
Hello, I've searched online for any similar problems and it seems that there's not a lot on the net for a CL error. Most were printer related. Just by seing things from a logical perspective, this error may be a tray issue, so try opening and closing the cash tray and see if this remedies the problem. If you can unplug the register from the power cord, do so and see if this helps. Try the unplugging with a closed and an opened tray. I'm not a cash register expert so this is just guesswork. Hope it helps.
E3 error message is normally registration not completed.
Put the key in the turn power off,put key in P position put power back on.The system does a half clear.Go to R position and carry on with normal transactions.
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