Casio HR-8TM Plus Handheld Printing Calculator
- Be sure to keep all user documentation handy for future reference.
NOTICE
Handling the Calculator
- Never try to take the calculator apart.
- When using paper, be sure you install it correctly.
- Paper jams are indicated by ‘‘P’’. Correct the problem as soon as possible.
Battery Operation
Any of the following indicates low battery power. Switch power off and replace batteries for normal operation.
- Dim display
- Printing problems
Important
- Note the following to avoid battery leakage and damage to the unit.
- Never mix batteries of different types.
- Never mix old batteries and new ones.
- Never leave dead batteries in the battery compartment.
- Remove batteries if you do not plan to use the calculator for a long time.
- Do not expose batteries to heat, let them become shorted, or try to take them apart.
- Should batteries leak, clean out the battery compartment immediately. Avoid letting the battery fl uid come into direct contact with your skin.
AC Operation
Important!
- The adaptor normally becomes warm when it is being used.
- Unplug the adaptor from the AC outlet when you are not using the calculator.
- Make sure calculator power is switched off when connecting or disconnecting the adaptor.
- Using another adaptor besides AD-A60024 can damage your calculator.
About the Input Buffer
The input buffer of this calculator holds up to 15 key operations so you can continue key input even while another operation is being processed.
- Pressing the RESET button deletes independent memory contents, conversion rate settings, tax rate settings, etc. Be sure to keep separate records of all important settings and numeric data to protect against accidental loss.
- Press the RESET button on the back of the calculator to restore normal operation whenever the calculator does not operate correctly. If pressing the RESET button does not restore normal operation, contact your original retailer or nearby dealer.
Errors
The following cause the error symbol ‘‘E’’ to appear on the display. Clear the error as indicated and continue.
- Integer of a result is longer than 12 digits. Shift the decimal place of the displayed value 12 places to the right for approximate result. Press AC to clear the calculation.
- Integer of total in memory is longer than 12 digits. Press AC to clear the calculation.
Memory protection:
The contents of the memory are protected against errors and that is recalled by the MRC key after the overfl ow check is released by the AC key.
Auto Power Off
The calculator is switched off after about 6 minutes from the last operation. Press ON AC to re-start. Memory contents and the decimal mode setting are retained. k Specifi cations
- Ambient temperature range: 0°C to 40°C (32°F to 104°F)
- Power supply:
- AC: AC adaptor (AD-A60024)
- DC: Four AA-size manganese batteries provide approximately 390 hours of continuous display (540 hours with type R6P (SUM-3)); or printing of approximately 3,100 consecutive lines of ‘‘555555M+’’ with display (8,500 lines with type R6P (SUM-3)).
- Dimensions: 41.1mmH ×99mmW ×196mmD (15/8″H ×37/8″W ×711/16″D) excluding roll holder.
- Weight: 340 g (12.0 oz) including batteries.
To Load Batteries
Be sure that + and – poles of each battery are facing in the prober direction.
Important!
Replacing batteries causes independent memory contents to be cleared, and also returns the tax rate and conversion rates to their initial defaults.
AC Operation
Replacing the Ink Roller (IR-40)
Loading the Paper Roll
- External Roll
- Internal Roll
Switching between Printing and Non-Printing 
Printing Results Only
Example: 
Date and Reference Number Printing
Decimal Mode
- F: Floating decimal
- 0-5/4: Round off results to 0 or 2 decimal places, applying
- 2-5/4 floating decimal for input and intermediate results.
“F” indicator does not appear on the display.
7894÷6=1315.666666… 
Calculations
(-45) 89+12=-3993
3+1.2=4.2
6+1.2=7.2
2.3 12=27.6
4.5 12=54
2.52=6.25
2.53=15.625
2.54=39.0625 
53+6= 59
23-8= 15
56 2=112
99÷4= 24.75
210.75
7+7-7+(2 3)+(2 3)=19 
| Purchase Price |
$480 |
| Profit/Gewinn | 25%
? ($160) |
| Selling Price |
? ($640) |
| Amount 1 |
80 |
| Amount 2 |
100 |
| Increase |
? (25%) |
100-80÷ 80 × 100=25%
Cost, selling price, and margin calculations 
GUIDELINES LAID DOWN BY FCC RULES FOR USE OF THE UNIT IN THE U.S.A. (not applicable to other areas).
NOTICE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installa-tion. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harm-ful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the in-terference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is con-nected.
- Consult the dealer or an experienced radio/TV tech-nician for help.
Caution: Changes or modification to the product not expressly approved by CASIO could void the user’s authority to operate the product. 
Manufacturer (Headquarters in Japan):
- Company Name: CASIO COMPUTER CO., LTD.
- Address: 6-2, Hon-machi 1-chome, Shibuya-ku, Tokyo 151-8543, Japan
Responsible Entity within the European Union:
- Company Name: CASIO EUROPE GmbH
- Address: Casio-Platz 1, 22848 Norderstedt, Germany
Frequently Asked Questions
How do I handle paper jams in the calculator?
Paper jams are indicated by 'P' on the display. To correct the problem, ensure that the paper is installed correctly and remove any jams as soon as possible.
What should I do when the calculator displays 'E' for an error?
The 'E' error symbol appears when the integer of a result is longer than 12 digits. Shift the decimal place 12 places to the right for an approximate result. Press AC to clear the calculation.
How do I replace the ink roller (IR-40) in the calculator?
To replace the ink roller, follow the provided instructions for loading the paper roll and switching between printing and non-printing modes.
What is the Auto Power Off feature?
The calculator is designed to switch off automatically after about 6 minutes of inactivity. Press ON AC to restart it. Memory contents and decimal mode settings are retained.
Can I use an AC adaptor with the calculator?
Yes, you can use an AC adaptor (AD-A60024) with the calculator. However, make sure the calculator power is switched off when connecting or disconnecting the adaptor.
How many key operations can the input buffer hold?
The input buffer of this calculator can hold up to 15 key operations, allowing you to continue input even while another operation is being processed.
What should I do if I need to reset the calculator to its normal operation?
You can press the RESET button on the back of the calculator to restore normal operation. Be sure to keep separate records of important settings and data.
What are the specifications of the Casio HR-8TM Plus calculator?
The calculator has an ambient temperature range of 0°C to 40°C, supports both AC and DC power sources, and its dimensions are 41.1mmH × 99mmW × 196mmD.
What are the precautions for battery operation?
To avoid battery leakage and damage, never mix different types of batteries, mix old and new batteries, leave dead batteries in the compartment, expose batteries to heat, short them, or attempt to take them apart.
What is the purpose of the 'RESET' button on the calculator?
The 'RESET' button is used to delete independent memory contents, conversion rate settings, tax rate settings, etc. It can restore normal operation if the calculator is not functioning correctly.
Can I switch between printing and non-printing modes on the calculator?
Yes, you can switch between printing and non-printing modes. Refer to the user manual for specific instructions on how to do this.
What is the purpose of the Decimal Mode on the calculator?
The Decimal Mode allows you to specify how many decimal places you want results to be rounded to, or you can choose floating decimal mode for unrounded results. Refer to the user manual for details on how to set the Decimal Mode.
Download This PDF Link: Casio HR-8TM Plus Handheld Printing Calculator User’s Guide
