Ativa AT-CK1 Main key Operations, Decimal Function Keys, Functions Description, Storage & Care

(3) Main key Operations

DEP & PMT

CHK & CHG

BAL

$

(4) Decimal Function Keys

Pressing it will reset the calculation register (Total clear) without affecting the independent memory accounts where your account balances are stored.

(5) Functions Description

KEY OPERATION	DISPLAY
ON/AC	0.00
1 ÷ 3 =	0.00
		KEY OPERATION	DISPLAY
1 + 3 =	0.04
A/F 1 ÷ 3=	0.3333333	3574 x 12%	428.88
		654 ÷ 852%	76.760563
		125 + 20%	150.
		150 -20%	120.

3. CHECKBOOK

The checkbook function provides the back-up capability of keeping the status of your checking or saving accounts, personal budget, or special income and expenses records stored in three independent memories, i.e., AC1, AC2 and AC3. Information can be stored in three memories continuously, whether the unit is on or off as long as the batteries are live. These three-memory capabilities are available to you in addition to the standard calculations. This calculator also has a LOCK key (see (2) Getting Started), which allows you to lock the checkbook by pressing a password. This prevents anyone from using the memory function without authorization.

AC1 is designed as a checking account memory while AC2 and AC3 are used for charge account memories. The charge memories will allow you to keep the current status of your credit account. The debt (minus) side of the account is represented by the “charge” input, and the credit (plus) side of the charge account is represented by the “payment” input. Moreover, you can check the grand total of all these account memories by pressing $ under checkbook function. Before you start the checkbook function, you can operate as below to clear the account balances.

EXAMPLE:

BAL-1(Note: Display current BAL-1 value, not Fixed value)

Similarly for AC2 and AC3, Instead of pressing [CHK], you should press [CHG-2] and [CHG-3] respectively.

Example: Set the account balance as follows:

Bal. of AC1 = 950.34;	Bal. of AC2 = -240.66;
Bal. of AC3 = -480.45.

Example: Basing on the balance listed above. Now enter the following transactions in the checking and charge accounts.

Wrote two checks for $ 70.55 and $ 35.49

Charged account AC2 for $ 12.55 and $ 50.67

Made payment on AC2 for $ 250.21

Made payment on AC3 for $ 250.45

LOCK MODE

To protect the private account data from unauthorized reading, you can set your own password. The password can only be set before the user operates the Checkbook key buttons, such as: [DEP-1], [CHK-1], [PMT-2], [PMT-3], [CHG-2], [CHG-3] and all balance key buttons. To set a password you need to input a four-digit number, and then

press . The key symbol on the LCD will be lighted to indicate that the unit is under lock. To unlock the calculator enter your

password followed by pressing .

(6) Automatic Shut-Off

This feature automatically shuts your system off if no entry has been made within a 3-6 minutes time period. The auto shut-off function extends battery life of the Ativa Checkbook Calculator™, while protecting the pre-stored data in the Independent memory accounts.

(7) Changing the Batteries

Although Ativa Checkbook Calculator™ is solar powered, they utilize small Lithium cell batteries to maintain their permanent memory files. The average life span of the batteries is approximately seventeen months. High levels of usage will result in a lower life span. Either you or a qualified service technician can easily replace batteries.

Ativa Checkbook Calculator™

Use: (one) Lithium LR1130 replacement battery (battery included) Battery Contains Mercury. Do not Put in Trash. Recycle or Manages as Hazardous Waste. Do not dispose of batteries in fire, batteries may explode or leak.

LR1130

TO REPLACE BATTERIES

1.Write down your existing balance, as it may be erased when you remove the batteries.

2.Slide the Battery door open.

3.Remove existing batteries.

4.Insert new batteries with the positive (+) side facing up.

5.Slide down to Close battery door

6.Perform RESET function.

(8) Cleaning Your Ativa Checkbook Calculator™

When cleaning your calculator do not use any chemical or organic solvent as they may damage the finish. Simply use a clean soft and dry piece of cloth.

(9) Storage & Care

Be sure to keep your Ativa Checkbook Calculator™ in a clean and dry place away from extreme temperature, dampness or strong electromagnetic fields.

Be careful not to drop your calculator, as it could damage or delete memory connections.

Do not submit your calculator to excessive pressure or force. Doing so could damage components such as the solar panel and glass LCD.

(10) Troubleshooting

What happens if I forget my password?

-If you haven’t written it down anywhere else, the only option is to remove the battery and wait for about thirty minutes. Your stored balances will be lost but can be re-entered manually.

Why can’t I program my user password?

-When setting your password, you must enter your password data immediately after pressing [ON/AC] key. The calculator will not accept a password if other function key (+,-,= etc.) are pressed after the reset and before the password key. This is to protect users who do not want a password, from setting one by mistake.

Why can’t I access my independent memory accounts file?

-Make sure that your files are accessible (not locked). Files are not accessible if there is a KEY symbol in the LCD display screen. To unlock

files, enter your pass code followed by the pressing . This should open your files.

What if I press the BAL key and no balance shows?

-First, place a piece of opaque card over the solar panel (the glass rectangular strip with bars, located in the top right corner of your calculator). This action blocks the light source and forces the unit to rely on battery power. Now power ON your calculator. If the numeric screen remains blank, dead batteries have caused the memory loss. Replace the batteries.

Why do I get a peculiar or incorrect result when I press the = key?

-This might occur due to the calculator’s Constant Function. Please see Constant Function section.

What should I do if I enter an incorrect deposit or check amount?

-Perform the reverse of the transaction. For example: If you enter an incorrect CHECK in the amount, enter the same amount as the deposit. If you cannot recall the mistaken amount, clear the account balance, press BAL key first then press [CHK] [CHG] key.

What do I do if the decimal point is in the wrong place?

-The decimal point’s location is controlled by the decimal Function Keys. Please see Decimal Function Keys section.

What does it mean when an “E” shows on the LCD display screen?

-The “E” shows when the result of your calculation is too large for the calculator to show on the LCD display screen. Press the [AC] key to clear the “E” message.