KX-FT21LA
- 70 -
When all waveforms are OK.
Reconfirm RESET.
IC malfunction
Other NG examples while the power is ON and the LCD displays the following.
CALL SERVICELCD display
This display occurs when the temperature of the thermistor
on the terminal head is NG.
Faulty connection of the thermal head connector.
ASIC IC1 pins 193 and 207 or the thermistor on the thermal head is NG.
LCD display
OK
OK
NG
Check the LCD.
WDERR
RESET
RESET
Example
ASIC
Chip
3.3V
Open the circuit inside.
Replace the CPU.
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