Instruction/ maintenance manual of the product EC-3031 Radio Shack
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Cat. No. 65-75 4 OWNER’S MANUAL Please read before using this equipment. EC-3031 Handheld Printing Calc ulat or 65-754.fm P age 1 Friday, Au gust 27, 1999 1:1 7 PM.
2 FEATURES Your Radi oShack EC-303 1 Handhel d Printing C alculator is a full-featured ca l- culator de signed for ac curacy an d ease of use. The EC-3031 can pe rform man y diff erent ty pes of c alculati ons, in cluding percenta ge add-ons , discounts , and much m ore.
3 P aper Feed K e y — l ets you quick ly ad- vance the print paper wi thout affec ting calcul ations. Non-Add Print K ey — let s you print dates, c ode numbe rs, or other re fer- ence num bers wit hout affecti ng the cal- culat ion s. You c an also print out on ly the cal culation results.
4 THE FCC W ANTS Y OU TO KNOW This equ ipmen t complie s with the limit s for a Cl ass B dig ital devi ce as specifie d in Part 15 of FCC Rules . These limit s provi de r eason abl e prot ect ion ag ain st radio a nd TV inte rference i n reside ntial area s.
5 CONTEN TS Preparation .... ........... ................. ...... 6 Choosin g a P ower Sou rce ............. 6 Install ing Batteries .............. ...... 6 Using A C P o wer ............ ........... . 9 Install ing the P aper Roll .... .......... 1 2 Operation .
6 PREPARATION CHOOSING A P OWER SOURCE You can power yo ur calculato r from: • F our AA b atteries (not supp lied) • Stand ard AC pow er , using an A C adapter (n ot suppl ied) If you pla n to use the print fun ction fre- quently , we sugg est you use an AC adapter.
7 1. Slide the battery comp ar tment cov er in the directio n of the a rrow and r emov e it. 2. Install the batte r i es as ind icated by the pol arity symbo ls (+ and –) marke d insi de the co mpartment. Cautions: • Use onl y fresh b atteries of th e required size and type .
8 3. R epl ac e th e cover . 4. Press AC to tur n pow er on, then press RESET with a str aightene d paper cl ip to cle ar the cal culator . Repl ace the batteri es when the pr inting speed slows or th e dis play d ims.
9 • Ne v er hea t, disas sembl e, or thro w batteries in to a fire . • Ne v er lea v e dead, old , or we ak bat- teries in the c alculator . They ca n leak c hemical s that c orrode or damage elect ronic circ uits . Important: This calcula tor is ca pable of using re chargeab le nicke l-cadmiu m batteries .
10 Cautions: • Y ou m ust use a n A C ad apter that suppli es 6 v o lts and d eliv ers at least 3 00 milli amps . Its cent er tip mus t be set to negat iv e, an d its plug m ust correctly fit the c alcula- tor’ s jac k. The recom mended adapter m ee t s t hes e s pe cif ic atio ns .
11 1. Attach the 5. 5 mm outer diam eter/ 2.1 mm i nner diame ter barrel plu g to the adapte r cord, m atching TIP on the pl ug’ s side wi th –NEG o n the cord . 2. Set the adapte r’ s v oltag e s witch to 6V . 3. Insert the adapter’ s barrel plug into the cal culator’ s jack.
12 INSTALLING THE P APER ROLL Note: If the paper rol l does no t fit inside the pape r roll co mpartment , you ca n use the exte rnal roll holder un til the roll is smal l enough to fit in side th e com- part ment ( abo u t on e-inc h di amete r). 1. Press AC to turn on the ca lculator .
13 3. Cut across the paper to f o r m a str aight end . 4. Insert the paper . • Insert the end of the paper in to the slo t i ns ide the c om partment. • T o use the e xternal roll holder , inser t the end of the p aper into the rear slot from the bot tom of the ca lcula tor .
14 5. Press FEED to adv ance the pap er . 6. Inst all the pa per roll. • Place t he pa per roll i nside th e paper rol l compartment. • T o use the e xternal paper rol l holder , raise t he holder a nd sli p the pape r roll onto it.
15 7. R epl ace th e cover , thre ading the paper thro ugh the s lot. Repla ce the pap er roll w hen you s ee a red strip on one edg e of the paper. Use a stan dard 2 1 / 4 -inch paper roll , such as Cat.
16 OPERATIO N T URNING THE EC-303 1 ON/OFF Press AC to turn on the EC-30 31. Press OFF to turn it off. To sav e powe r, the EC- 3031 auto mati- cally turn s off if you do not use it for about 6 minutes . Press AC to turn it back on . Note: All pr evious e ntries are cleared when t he calculat or turns off .
17 PRINTING The EC- 3031 can print and display all calcul ator entries and resu lts, or sim ply displa y entries and resu lts with out print- ing them . You can also print a d ate, a referenc e or code nu mber, and s o on, withou t affecti ng the c alculati ons in prog ress.
18 To simp ly dis play en trie s and re sults without p rinting the m, press PRT agai n. PRT disa ppears fr om th e displ ay and the cal culator display s your en tries and results , but does not print them. Prin ting a Di splayed V alu e To pri nt a di spl ayed value even when the pr int func tion is turn ed off, pres s P/# .
19 ROUNDING The RND key dete rmines wh ere the decim al ap pears o n the d isp lay. Ea ch time you pres s RND , the di splay c hang- es fro m F to 5/4 to CUT . Select F t o displ ay a f loati ng dec imal point. Th e calcul ator uses the full 1 0- digit dis pl ay to sh ow yo ur calc ula tio n re- sults .
20 down. Th e entries and intermedia te results appe ar with fl oating decima l point s. Select CUT to limi t final c alculati on re- sults to two decim al p lac es wi th no roun din g. The en trie s and int erm ediat e results appe ar with fl oating decima l point s.
21 CORRECTING ENTR Y ER RO RS If you enter an in correct val ue, press C once. Th en en ter the corr ect v alu e and proceed with yo ur calcu lation. If you press an inco rrect func tion ke y (+, –, × , ÷ ), simp ly pre ss the c orrect key and con tinue.
22 CORRECTING CALCULATION ERROR S E (error) app ears at the upper left of the displa y when: • A cal cu lat ion res ul t e xce eds 10 dig- its ( this is an ov erflo w error see “Estimat ing Cal culation Results”). • A mem or y ca lcul atio n exceeds 10 digit s (t he memor y conte nt s re ma in unchan ged).
23 3. Add to the right of the n umber as man y zero s as there we re digits to the left of the dec imal poi nt. For e xam ple, th e dis played value E1.01420 6404 is estim ated to equal 10, 142,06 4,040 (one z ero added). 4. Press C to clear the error .
24 Constant Cal culations Pres s the functi on key ( ÷ , × , –, +) twice to make the fo llowing va lue a constant. Note: A K appea rs on the disp lay whe n you us e a co nstant.
25 65-754.fm P age 25 Friday, A ugust 27, 1999 1: 17 PM.
26 Memory Calculations The mem ory cal culation fe atu re lets yo u easily do multi -step c alculati ons. Us e the fo llowing ke ys for memo ry calcul a- tions. To stor e a val ue in m emory, f irst pres s AC then MC to clear the memory. Then enter the number or c alculati on and press M+ .
27 To reca ll the value from m emory, pres s MR . Note: An M app ears on the disp lay when t he memory fu nction is used. 65-754.fm P age 27 Friday, A ugust 27, 1999 1: 17 PM.
28 P er centa ge Calculations 12% of 1 500 What perc entag e of 880 is 660? 65-754.fm P age 28 Friday, A ugust 27, 1999 1: 17 PM.
29 15% add -on to 2 500 25% decrea se of 3500 If you made $80 las t week and $10 0 this week , what is th e perc ent incr eas e? 65-754.fm P age 29 Friday, A ugust 27, 1999 1: 17 PM.
30 Markup Calcula tions What will the se lling price and profit be when t he purchas ing pr ice of an item is $480 an d the gross pro fit margi n is 25%? 65-754.
31 CARE Your Radi oShack EC-303 1 Handhel d Printing Calcul ator is an exampl e of su- perior design and cr aftsmans hip. The follow ing sugges tions will he lp you care for the ca lcula tor so you can enjoy it for years . • K eep the calculat or dry .
32 Modify ing or tamp ering wi th the calcul a- tor’s i nternal compon ents can cause a malfunc tion and mig ht inva lidate its warra nty and voi d you r FCC au thor iza- tion to o per ate it. I f y our cal cu lat or i s not perfo rming as i t shoul d, take it t o your local R adioSha ck st ore for ass istance.
33 2. Raise the paper r oll holder , if nec- essar y . 3. Remo v e the i nk roll er by lifting it where y ou see PULL UP . 4. I nst all th e new ink r olle r car tr idge.
34 6. R epl ac e th e cover . RESETTING THE CALCULATOR If your EC -3031 loc ks up, yo u reset it, as sho wn i n “Ins tal lin g Batt eri es” on Page 6. Note: The rese t procedure c lears all calcul ations a nd memory v alues. If your EC -3031 s till does not work prope rly, repla ce the ba tteries an d press RESET again.
35 SPECIFICATIONS Ambient T emperat ure Range : 32–104°F (0–40°C) Battery Lif e ........... ... About 4,00 0 lines of pr in t ing P ower ........
36 NOTES 65-754.fm P age 36 Friday, A ugust 27, 1999 1: 17 PM.
37 65-754.fm P age 37 Friday, A ugust 27, 1999 1: 17 PM.
38 65-754.fm P age 38 Friday, A ugust 27, 1999 1: 17 PM.
39 Limited One -Y ear W arranty This pr oduct is war ranted by Radio Shack again st manufacturin g defects in materi al and wor kmansh ip under no rma l use for one ( 1) year from the date o f purchase fr om R adio Shack co mpa ny-owned st ore s and autho rized R adioShack franchise es and d eal- ers.
RadioShack A Division of Tandy Corpora tion Fort Worth, Texas 7610 2 6A7 Printed in China ( contin ued ) In the event of a produ ct d efect dur i n g th e warrant y peri od, take the product and the RadioS hack sales receipt as proof of purc hase date to any Ra- dioShack sto re.
An important point after buying a device Radio Shack EC-3031 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Radio Shack EC-3031 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Radio Shack EC-3031 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Radio Shack EC-3031 you will learn all the available features of the product, as well as information on its operation. The information that you get Radio Shack EC-3031 will certainly help you make a decision on the purchase.
If you already are a holder of Radio Shack EC-3031, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Radio Shack EC-3031.
However, one of the most important roles played by the user manual is to help in solving problems with Radio Shack EC-3031. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Radio Shack EC-3031 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
