Casio SF-5500B Manuel d'utilisateur Page 15

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14
7. TROUBLESHOOTING
START
Is the display contrast adjustment OK?
N
Y
N
Y
Y
N
Does the unit sound with each key entry?
Y
N
N
Y
N
N
Y
Y
Are the capacitors C8, C9, C10, C11,
C12, and C13 OK?
1
Replace C8, C9, C10, C11, C12, or
C13.
Adjust the display contrast.
Replace the batteries.
Check another function.
Does the display appear by pressing
the reset button?
Refer to "No/Erratic Display."
Do the batteries make positive contact
with the battery springs?
Adjust the contact and clean the
battery springs.
Is Pin 3 of REG1 5.3 V?
Replace REG1.
No power on
Are the power of batteries strong enough?
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