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Just talked to customer service at Sharp because I had same problem with my CD trays getting stuck and would not open even if they had cd's in them. He walked me through resetting the cd system. First have unit plugged in but in standby/off. Then press the open/close button, the stop button and the CD button all at one time(beside holding unit still to keep from sliding) till the display flashes CLEAR ALL and then let go and turn unit on and see if it solves your problem. It solved mine but I did write down instructions to make sure if it happens again I can use it again. Good luck, Helen
They're not showcasing, they are showboating. Who can afford new cars? Not too many of us 99%/ers, I suspect, and the number is dwindling. An income tax refund is money in the hand, who can resist buying something?
Does it open when you print a Z report? The most common problem with these was either the drawer wiring or drawer solenoid failing. ------------------------------------------------------------ If anyone needs more information, the Sharp ER-A410 and ER-A420 manual is here:http://the-checkout-tech.com/manuals/cashregisters/Sharp6.php
You need the PC Link software for your model.
All of these manuals can be downloaded at: http://the-checkout-tech.com/
sharp ER-1017 Service
sharp ER-1072 Service
sharp ER-1073 Service
sharp ER-1074 Service
sharp ER-1075 Service
sharp ER-1076 User Service
sharp ER-1077 Service Programming
sharp ER-1772 Service
sharp ER-1772s Service
sharp ER-1871 Service
sharp ER-1872 Service
sharp ER-1873 User Service
sharp ER-1875 User Service
sharp ER-1910 User Service
sharp ER-1911 User Service Programming
sharp ER-1911s User Programming
sharp ER-1920 User Service
sharp ER-1921 User(R) Service Programming
sharp ER-1921s Programming
sharp ER-1970 User Service Programming
sharp ER-2000U Service
sharp ER-2100 User Service
sharp ER-2370 Service
sharp ER-2371 User(R) Service Programming(R)
sharp ER-2385 Service
sharp ER-2386 Service
sharp ER-2386s User
sharp ER-2395 Service
sharp ER-2396 Service
sharp ER-2720 Service
sharp ER-2722 Service
sharp ER-2722A User Service
sharp ER-2742 Service
sharp ER-2742A Service
sharp ER-2770 Service
sharp ER-2782 Service
sharp ER-2782A Service
sharp ER-2905 Service
sharp ER-2908 Service
sharp ER-2910 Service Programming
sharp ER-2970 User Service
sharp ER-2975 Service
sharp ER-2980 User Service
sharp ER-2980S Service
sharp ER-3100 User Service Programming
sharp ER-3110 User Service Programming
sharp ER-3115 Service Programming
sharp ER-3120 User Service Programming
sharp ER-3550 Service
sharp ER-3600 User Service
sharp ER-3630 User Service
sharp ER-3712 User Service
sharp ER-3721 Service
sharp ER-3731 Service
sharp ER-3732 User Service
sharp ER-4100 User Service Programming(R)
sharp ER-4110 User Service Programming(R)
sharp ER-4100S Service
sharp ER-4110S Service
sharp ER-4550 Service
sharp ER-4630 User Service
sharp ER-4633 Service
sharp ER-4700 User
sharp ER-6740 Service
sharp ER-8700 Not Available, do you want to swap?
sharp ER-A150 User Service Programming
sharp ER-A160 User Service Programming
sharp ER-A170 User(R) Service Programming
sharp ER-A180 User Service Programming
sharp ER-A220 User Service Programming
sharp ER-A227G Programming
sharp ER-A250 User Service Programming
sharp ER-A310 User Service Programming
sharp ER-A320 User Programming
sharp ER-A330 User Service Programming
sharp ER-A410 User Service Programming
sharp ER-A420 User Service Programming
sharp ER-A430 User Service Programming
sharp ER-A440 User Service Programming
sharp ER-A440S Programming
sharp ER-A450 User Programming
sharp ER-A450S User Service Programming
sharp ER-A450T User Service Programming
sharp ER-A460 User Service Programming
sharp ER-A470 User Service Programming
sharp ER-A490 User(R) Service Programming
sharp ER-A510 User Service Programming
sharp ER-A510s Service
sharp ER-A520 User Service Programming
sharp ER-A530 User Service Programming
sharp ER-A550 User Service Programming
sharp ER-A550s User(R) Service
sharp ER-A570 User Service Programming
sharp ER-A610 User Service Programming
sharp ER-A650 User Service Programming
sharp ER-A650S Programming
sharp ER-A670 Not Available, do you want to swap?
sharp ER-A670S Programming
sharp ER-A750 User Service Programming
sharp ER-A770 User Service Programming
sharp ER-A770II User
sharp ER-A770M User Service
sharp ER-A771 User Service Programming
sharp ER-A850 User
sharp ER-A880 Not Available, do you want to swap?
sharp UP-3300 User Service Programming
sharp UP-3300M Service
sharp UP-3301 User Service Programming
sharp UP-600 User Service Programming
sharp UP-700 User Service Programming
sharp UP-800F User
sharp UP-810F User
sharp UP-820N User Service
sharp UP-X300 User
sharp UP-X500 User Service
sharp XE-A101 User Service Programming
sharp XE-A102 User Programming
sharp XE-A106 User
sharp XE-A110 User Service Programming
sharp XE-A120 User Service Programming
sharp XE-A130 User Service Programming
sharp XE-A201 User Service Programming
sharp XE-A202 User Service Programming
sharp XE-A203 User Programming
sharp XE-A206 User
sharp XE-A20S User Programming
sharp XE-A212 User Service Programming
sharp XE-A213 User Programming
sharp XE-A301 User Service Programming
sharp XE-A302 User Programming
sharp XE-A303 ? Programming
sharp XE-A401 User Programming
sharp XE-A402 User
sharp XE-A406 User
sharp XE-A40S User Programming
sharp XE-A505 User Programming
Most Sharp register, including the ER-A420, have a rechargeable battery mounted inside to hold all memory when the power goes out. It should last a few months, but two years is a bit much. This might get it going:
Unplug from AC POWER.
Turn the key to PGM.
Hold down both paper feed keys (at top-left of keyboard).
While holding those two buttons down, plug the power back in.
Turn the key back to REG.
Enter 1 CASH # to sign on as Cashier 1.
Try a sale.
There is a strong chance this won't do the job, because the memory has been randomized by total loss of power when the battery died. Worse yet, the battery may be too far gone to ever take a solid charge again. If so, you probably need the help of a Sharp register dealer to replace the battery, totally clear all memory and reprogram it. It's probably worth the money; the -420 is an excellent little register.
The Sharp ER-A330 and ER-A310 both have a calculator function that turned out to be just trouble for users who don't need it and don't know how to turn it off. At the bottom-left of the keyboard is a button labeled PO. Normally you enter a dollar amount and touch that to Pay Out money from the till. On these models it also activates the calculator mode, allowing you to add and subtract numbers without affecting sales.Touch PO to turn calculator mode back off, and you'll have a cash register again. Let me know if this isn't the fix you need.