CITIZEN CT-500J User Manual

POWER SUPPLY

−

CITIZEN model CT-500 is a dual-powered (high power solar + back-up battery) calculator operative under any lighting conditions.

-Auto power-off function-

The calculator switches the power off automatically if there has been no key entry for about 7 minutes.

-Battery change-

Remove the screw and the battery cover. Install a new battery with the + symbol facing upward, and then use a pointed object to short the RESET hole at the bottom-right corner of the battery compartment. When you finish, put back the battery cover and secure the screw.

KEY INDEX

[ON/C] : Power on / Clear key [CE] : Clear entry key

[+/–] : Sign change key [

[MU] : Price mark-up / down key [ % ] : Percentage key

] : Memory plus key [M

[MRC] : Memory recall key / Memory clear key

CORRECT

[

] : Correction key in Replay mode / Right-shift key in normal Edit mode

00→0

AUTO

] : Automatic replay key

[

REPLAY

ERROR

[

] : Error recall key

RECALL

CHECK

[

PRE/NOW

] :

Step-by-step check key in normal Edit mode (a

①

Previous-input / now-input display shift key in Error Recall mode

CHECK

[

]: Step-by-step check key in normal Edit mode (a

] : Square root key

] : Memory minus key

←b←c=d)

→b→c=d); ②

- E1 -

THE SIGNS OF THE DISPLAY MEAN THE FOLLOWING:

: Item counter (Max : 120) CRT : Correction mode

REP : Replay mode M : Memory loaded

E : Overflow / Logic error

PRE: Previous input NOW: now input

RECALL: Error recall mode MU : Mark up / down calculation

% : Percent = : Equal sign

ANS : Answer (to indicate the calculation result in Replay mode

＋－×÷

: Addition, subtraction, multiplication, division sign

ERR / NO ERR: Comparison error / no comparison error in ERROR RECALL mode

Minus ( or negative) value

– :

)

- E2 -