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Radio Shack EC-3031 - page 1
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 ...
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Radio Shack EC-3031 - page 2
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. The p rin t function p roduce s a perman ent record o f each entry and calcula ...
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Radio Shack EC-3031 - page 3
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. T wo -W ay P aper Feed — lets you feed paper fr om an ...
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Radio Shack EC-3031 - page 4
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. Howe ver, your ca lcul ator might cause TV or radio interfe rence eve n when i t is operat ...
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Radio Shack EC-3031 - page 5
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 . ................. ........... .......... 16 T ur ning the EC-30 31 On/Off .... .... 16 ...
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Radio Shack EC-3031 - page 6
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. Inst alli ng B atte ries You can power yo ur calcu lator from four AA bat terie ...
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Radio Shack EC-3031 - page 7
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 . • Ne v er mix fresh and old batter- ies , alka line and nic k el-ca ...
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Radio Shack EC-3031 - page 8
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. Cautions: • If y ou do not plan to use th e calc u- lator f or a mont h or more, or yo u plan to us e only an A C adapter , remo ...
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Radio Shack EC-3031 - page 9
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 . At the end of the ba tteries’ usefu ...
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Radio Shack EC-3031 - page 10
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 . Using an adapte r that doe s not meet t hes e spec ifi catio n ...
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Radio Shack EC-3031 - page 11
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. Note: Batter y power automa tica lly discon nects whe n y ou c ...
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Radio Shack EC-3031 - page 12
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 . 2. Slide o pen the paper r oll com par t- ment co v er a nd l ...
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Radio Shack EC-3031 - page 13
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 . Then ins er t the end of the paper in to the slot inside the co mpar ...
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Radio Shack EC-3031 - page 14
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. 65-754.fm P age 14 Friday, A ugust 27, 1999 1: 17 PM ...
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Radio Shack EC-3031 - page 15
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. No. 6 5-71 0 or 65-7 15. 65-754.fm P age 15 Friday, A ugust 27, 1999 1: 17 PM ...
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Radio Shack EC-3031 - page 16
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 . 65-754.fm P age 16 Friday, A ugust 27, 19 ...
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Radio Shack EC-3031 - page 17
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. Note: The c alculato r’s input buffer holds up to 7 key ope ration s, so ...
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Radio Shack EC-3031 - page 18
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/# . If the d isplay is sh ...
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Radio Shack EC-3031 - page 19
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 . Select 5/4 to r oun d fina l ca lcul a tio n ...
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Radio Shack EC-3031 - page 20
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. 65-754.fm P age 20 Friday, A ugust 27, 1999 1: 17 PM ...
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Radio Shack EC-3031 - page 21
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. 65-754.fm P age 21 Friday, A ugust 27, 1999 1: 17 PM ...
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Radio Shack EC-3031 - page 22
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). • Y ou try to div ide b y 0. If ...
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Radio Shack EC-3031 - page 23
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 . CALCULATION EXAMPLES Basic Calculati ons 65-754.fm P age 23 Friday, A ugust 27, 1999 1: 17 PM ...
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Radio Shack EC-3031 - page 24
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. 65-754.fm P age 24 Friday, A ugust 27, 1999 1: 17 PM ...
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Radio Shack EC-3031 - page 25
25 65-754.fm P age 25 Friday, A ugust 27, 1999 1: 17 PM ...
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Radio Shack EC-3031 - page 26
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+ . To add a v alue to the current memory value, e nter the nu ...
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Radio Shack EC-3031 - page 27
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 ...
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Radio Shack EC-3031 - page 28
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 ...
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Radio Shack EC-3031 - page 29
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 ...
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Radio Shack EC-3031 - page 30
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.fm P age 30 Friday, A ugust 27, 1999 1: 17 PM ...
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Radio Shack EC-3031 - page 31
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 . If it gets wet , wipe i t dry immedia tely . Liq- uids c an contai n miner als that c or- rode ...
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Radio Shack EC-3031 - page 32
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. REPLACING THE INK ROLLER The printe ...
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Radio Shack EC-3031 - page 33
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. 5. Low er the pape r roll holder , if nec- essar y . 65-754.fm P age 33 Friday, A ugust 27, 1999 1: 17 PM ...
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Radio Shack EC-3031 - page 34
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. 65-754.fm P age 34 Frida ...
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Radio Shack EC-3031 - page 35
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 ......... ........ 4 AA batte ries (1.5 V) Option al A C A dapter (Cat. No . 273–166 4) Dime nsions (HWD inclu din g roll hol der) : 1 9 / 16 × 3 7 / 8 × 7 9 / 16 Inches (39 × 98 × 192 mm) W eigh t (in ...
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Radio Shack EC-3031 - page 36
36 NOTES 65-754.fm P age 36 Friday, A ugust 27, 1999 1: 17 PM ...
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Radio Shack EC-3031 - page 37
37 65-754.fm P age 37 Friday, A ugust 27, 1999 1: 17 PM ...
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Radio Shack EC-3031 - page 38
38 65-754.fm P age 38 Friday, A ugust 27, 1999 1: 17 PM ...
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Radio Shack EC-3031 - page 39
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. E XCEPT AS PR O VIDED HEREI N, Ra- dioShac k MA ...
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Radio Shack EC-3031 - page 40
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. RadioSha ck will, at its opti on, un- less otherwise provided by la w: ...
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