Toshiba RAV-RM301MUT-E Service Manual page 57

[E11 trouble]
Is the
connection for the
UART communication
connector (Internal board
CN521 red/Optional
board CN1 red)
normal?
Is connector
lead wire for the UART
communication
cut?
Red LED (LD1)
of external output board
not illuminated.
Red LED (LD1)
light on the external input/
output board flashes
on and off.
Red LED (LD1)
of external input/output
board blinks.
Check the operating status.
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
– 57 –
Repair of connector
connection.
Replacement of the
connector's lead wire.
Lead wire is cut or failure
of input/output board.
Failure with the external
input/output board
→ Replace
Failure with the internal
board (MCC-1643)
→ Replace