Toshiba RAV-HM301MUT-E Service Manual page 58

[E11 trouble]
Is the
connection for
the UART
communication connector
(Indoor P.C. board CN521
red/Application control
kit CN1 red)
normal?
Is connector
lead wire for the UART
communication
cut?
Does Red
LED (LD1) on
the Application control
kit light up?
Red LED (LD1)
on the Application
control kit repeatedly lights
up and flashes on
and off.
Red LED (LD1)
of the Application
control kit blinks.
Check the operating status.
YES
NO
YES
NO
NO
YES
YES
NO
YES
NO
Option parts : Application control kit (TCB-PCUC2E)
– 58 –
Repair of connector
connection.
Replacement of the
connector's lead wire.
Replace Application control kit.
(TCB-PCUC2E)
Replace Application control kit.
(TCB-PCUC2E)
Replace indoor P.C. board.
(MCC-1643)