Troubleshooting - Casio DX-500TR Service Manual & Parts List

Note: Perform the operation in numerical order.
User's unit
Operation
1 While pushing down RESET
button, press then re-
lease RESET button.
4 Press KAYIT .
5 After the data transmis-
sion....
It takes a few minutes to
complete the data transfer.
7 Press RESET button.
9 Press AÇIK .
Note: Never press
KAYIT as it
deletes all the data.
A Press AÇIK (OFF).

4. TROUBLESHOOTING

Before doing the following solutions, save data if possible.
SYMPTOM
No power
No display at all or wrong display Defective heat seal
Display
2 While pushing down RESET
T?
(Unit emits a buzz.) button, press
lease RESET button.
3 Press KAYIT .
T?
(Unit emits a buzz.)
OK 6 When the data is transferred
properly......
In case the data transfer
ends incomplete......
8 Press RESET button.
SIFIRLA?
0 Press AÇIK .
AD?
Note: Never press
B Press AÇIK (OFF).
CAUSE
Weak battery
Poor soldering of the power
supply circuit
Defective LCD
— 7 —
Back up unit
Operation
then re-
KAYIT as it
deletes all the data.
SOLUTION
Replace batteries
Resolder
Replace the heat seal
Replace the LCD
Display
R?
(Unit emits a buzz.)
R?
(Unit emits a buzz.)
OK
SIFIRLA?
SIFIRLA?
AD?