Brother DC-7030 Manual

The Brother DC-7030 is a high-performance desktop calculator designed for office and personal use, featuring a 12-digit display, large ergonomic keys, dual power supply (solar and battery), tax calculation functions, memory functions, item count, and auto power-off. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting to Power 7. Basic Calculations 8. Advanced Functions 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 12-digit LCD display, Large ergonomic keypad, Solar panel, Battery compartment, Paper roll holder (optional), AC adapter port.

Feature	Description
12-digit display	Large, easy-to-read LCD with tax symbols
Dual power supply	Solar cell and battery backup for continuous operation
Tax calculation	TAX+/TAX- keys for quick tax inclusion/exclusion
Memory functions	M+, M-, MR, MC for memory operations
Item count	Automatically counts number of entries
Auto power-off	Conserves power after several minutes of inactivity
Grand total	GT key stores running total of calculations
Paper feed	FEED key advances paper in printer models
Clear functions	C (clear entry) and AC (all clear) keys
Decimal selection	0,2,3,4,F for fixed decimal places

Installation

Unpack and inspect contents. Place on clean, stable surface.

Insert batteries: Open battery compartment, install 2 AA batteries (included).
Connect AC adapter (optional): Plug adapter into DC jack and wall outlet.
Install paper roll (optional): For printing models, load paper into rear compartment.
Position calculator: Ensure adequate light for solar panel operation.

WARNING! Keep away from liquids and extreme temperatures. Do not disassemble.

First-Time Setup

Power on calculator; perform initial configuration.

Set decimal places: Press "0,2,3,4,F" key to select desired decimal mode.
Set tax rate: Enter rate (e.g., 7.5), press and hold TAX+ until "SET" appears.
Test basic functions: Enter 123 + 456 = to verify display shows 579.
Check power: Ensure display is clear and bright under normal lighting.

CAUTION! Use correct battery polarity; do not mix old and new batteries.

Specifications

Display: 12-digit LCD with symbols.
Power Source: Solar cell and 2 x AA batteries (backup).
Battery Life: Approximately 3 years with normal use.
Dimensions: 158mm (W) x 215mm (D) x 50mm (H).
Weight: 300g (without batteries).
Functions: Addition, subtraction, multiplication, division, tax, memory, grand total.
Operating Temp: 0°C to 40°C (32°F to 104°F).
Warranty: 1-year limited warranty.

Controls and Settings

Keypad layout: Number keys (0-9), arithmetic keys (+, -, ×, ÷, =), function keys (TAX+/TAX-, M+, M-, MR, MC, GT, C, AC).

Display Indicators: M (memory in use), TAX (tax rate set), GT (grand total stored), - (negative), E (error).

Settings: Decimal selector (0,2,3,4,F), tax rate setting (hold TAX+), item count mode, auto power-off (approximately 7 minutes).

Connecting to Power

Dual power: Solar panel (primary) and battery backup.

Ensure calculator is in well-lit area for solar operation.
For battery installation: Match + and - polarity markings.
AC adapter (optional): Use only Brother-approved adapter (DC 3V).
Power save: Auto power-off activates after approximately 7 minutes idle.

Tip: If display dims, move to brighter area or replace batteries.

Basic Calculations

Supports standard arithmetic operations.

Addition/subtraction: Enter numbers followed by + or - then =.
Multiplication/division: Use × and ÷ keys.
Percentage: Enter number, press ×, enter percentage, press %.
Clear functions: C clears last entry; AC clears all.
Grand total: GT key recalls sum of all calculations since last AC.
Item count: Automatically displays count of entered items.

WARNING! Do not press keys with excessive force; use gentle touch.

Advanced Functions

Tax calculations: TAX+ adds tax; TAX- removes tax. Memory: M+ adds to memory; M- subtracts; MR recalls; MC clears.

Care & Cleaning

Remove batteries before extended storage. Clean with dry, soft cloth; no liquids or chemicals.

CAUTION! Do not use abrasive cleaners; avoid direct sunlight for extended periods.

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
Display blank/dim	Low power	Move to brighter area; replace batteries.
Keys not responding	Dirt/debris	Clean keypad with dry cloth; ensure no obstructions.
Incorrect calculations	Wrong decimal setting	Press AC to clear, then set correct decimal places.
Tax not calculating	Tax rate not set	Set tax rate: Enter rate, hold TAX+ until "SET" appears.
Error "E" displayed	Overflow/error	Press AC to clear; re-enter calculation.

Reset: Remove batteries for 30 seconds, then reinstall.

Service: 1-877-276-8437; www.brother.com