2RV/2RW/2RX/2RY/3RA-3
7-91
F010: Program read error
The garbled 2bit data was detected during the program read from the flash memory.
F020: RAM read / write error
The error appears during the reading/writing check of the RAM for the CPU when the main unit starts up.
F040: Communication error between the main unit and CPU (Communication error
between the controller and the print engine)
The communication between the controller and the print engine is faulty.
Step Check description Assumed cause Measures Reference
1 Resetting the main power The program does not start
up properly.
Turn off the power switch and
unplug the power cord. After
5s passes, reconnect the
power cord and turn on the
power switch.
2 Executing U021 The backup RAM data is
faulty.
Execute U021 to initialize the
backup RAM data.
3 Replacing the main/engine
PWB
The main/engine PWB is
faulty.
Replace the main/engine
PWB.
Step Check description Assumed cause Measures Reference
1 Resetting the main power The program does not start
up properly.
Turn off the power switch and
unplug the power cord. After
5s passes, reconnect the
power cord and turn on the
power switch.
2 Executing U021 The backup RAM data is
faulty.
Execute U021 to initialize the
backup RAM data.
3 Replacing the main/engine
PWB
The main/engine PWB is
faulty.
Replace the main/engine
PWB.
Step Check description Assumed cause Measures Reference
1 Resetting the main power The communication
between the controller and
the print engine is faulty.
Turn off the power switch and
unplug the power cord. After
5s passes, reconnect the
power cord and turn on the
power switch.
2 Firmware upgrade The firmware is not the lat-
est version.
Upgrade the main firmware
and the engine firmware to
the latest version.
3 Replacing the main/engine
PWB
The main/engine PWB is
faulty.
Replace the main/engine
PWB.