2RV/2RW/2RX/2RY/3RA-3
7-73
C0190: Backup memory device error (Engine)
The data is not read from the EEPROM when turning the power on. (3 retries)
C0500: Drive lock detection by the engine firmware
The main motor continuously rotates.
4 Checking the EEPROM The EEPROM is faulty. Check the main and engine
machine serial number in
U004 and if the engine num-
ber is different, reinstall the
EEPROM in the main/engine
PWB. If not repaired, replace
the EEPROM and execute
U004.
Note: Do not execute U004
(selecting [Execute] and
pressing the [Start] key). A
different machine serial num-
ber is overwritten.
5 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 EEPROM is not prop-
erly read.
Turn off the power switch and
unplug the power cord. After
5s passes, reconnect the
power cord and turn on the
power switch.
2 Checking the main/engine
PWB
The connector is not con-
nected properly or the wire
or main/engine PWB is
faulty.
Reconnect the connector of
the main/engine PWB. If the
wire is pinched or scratched,
repair or replace it. If not
repaired, replace the main/
engine PWB.
3 Replacing the EEPROM The data is not properly
read since the EEPROM is
faulty.
Contact the service support
to acquire the new EEPROM,
and install it on the main/
engine PWB.
Step Check description Assumed cause Measures Reference
1 Resetting the main power The main/engine PWB
does not correctly operate.
Turn off the power switch and
unplug the power cord. After
5s passes, reconnect the
power cord and turn on the
power switch.
Step Check description Assumed cause Measures Reference