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KX-PX1CX
(Main board) Initial programming of the mechanical CPU
The mechanical CPU ((IC8) has a Flash ROM built in. When the mechanical CPU is implemented on the board, the program is
not written. The program is written during the manufacturing process. When the mechanical CPU is replaced at the time of ser-
vice, programming is needed. Since the set contains a simple programming method, follow the steps written below.
not written. The program is written during the manufacturing process. When the mechanical CPU is replaced at the time of ser-
vice, programming is needed. Since the set contains a simple programming method, follow the steps written below.
1. Remove the AC adaptor (in order not to power on the board improperly).
2. Short-circuit the FR_RST (check land) on the main board to GND with a wire (to reset the main CPU correctly).
3. Connect the AC adaptor.
4. Cut the wire. (The main CPU starts operating.)
5. When the programming starts, the access LED goes on.
2. Short-circuit the FR_RST (check land) on the main board to GND with a wire (to reset the main CPU correctly).
3. Connect the AC adaptor.
4. Cut the wire. (The main CPU starts operating.)
5. When the programming starts, the access LED goes on.
* If FR_RST contacts GND while the access LED is on, there is a possibility to cause a writing failure that could disable rewrit-
ing. So, care should be taken in this regard.
ing. So, care should be taken in this regard.
6. When the programming is finished, the access LED goes off. (The estimated time for programming is about 20 seconds.)
7. When the programming is finished normally, the power of the set goes off.
8. If the programming fails, the access LED does not go off. (When the access LED stays on for 1 minute or longer, the program-
7. When the programming is finished normally, the power of the set goes off.
8. If the programming fails, the access LED does not go off. (When the access LED stays on for 1 minute or longer, the program-
ming fails.) In this case, check the soldering of the mechanical CPU and then perform the programming again.)
(Main board) Processing of the mechanical CPU
IC8 (mechanical CPU) controls the power, monitors the sensors, and drives the motor. While IC3 (CPU) processes the high-
level information, the mechanical CPU is assigned to control the operations of the set that should be processed in real time.
1) Monitor the power (on and off of the power, output of the reset signal)
2) Detect the rotation at the time of driving the motor
3) Measure the thermal head temperature
4) Control the drive of the motor
level information, the mechanical CPU is assigned to control the operations of the set that should be processed in real time.
1) Monitor the power (on and off of the power, output of the reset signal)
2) Detect the rotation at the time of driving the motor
3) Measure the thermal head temperature
4) Control the drive of the motor
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