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You have probably turned the key before you finished. Turn the key back to where it last was (the error will stop). Then finished what you started in that mode before turning the key again.
E191 is not a listed error code so it is probably caused by a fault on the main circuit board. See a dealer for repairE191 is not a listed error code so it is probably caused by a fault on the main circuit board. See a dealer for repair
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jullymarrodr says:
Ol?, como fa?o para remover a letra E que aparece na tela da calculadora quando coloco no modo impress?o, ? uma calculadora casio hr100mt
E001 = Wrong Mode, which means u had did something in another key mode but not yet done.
Solution 1 :
1. Turn the key to another position where the screen do not show E001
2. Press [Subtotal]
3. O.K
Solution 2: Flag Clear the Machine
1. Key turn to OFF
2. Keep Press [FEED]
3. Key turn to PGM
4. Release [FEED]
5. U will see "INIT 0000000000"
6. Press [Subtotal]
7. U will see "FFFFFFFFFF"
8. Wait for 10 seconds, the machine will print
9. OK
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