Troubleshooting - Pioneer Wyt009Alsi24Rl Service Manual

3.2 Troubleshooting

3.2.1 E0 ---IDU & ODU communication failure
Start
Display E0
IDU wiring
connection correct ?
Check communication
wiring and the connection,
in good condition?
ODU wiring
Connection correct?
Main power supply
from IDU?
Check voltage from IDU
terminal btw L,N. is there
220V?
Is the ODU PCB
LED5 ON?
Flash
Replace ODU PCB
No
Yes
No
Replace/
re-connect
Yes
No
Yes
No
Yes
No
Replace IDU
Yes
Yes
E0 disappear?
Yes
No
ON
constantly
No
Check and
re-connect
E0 disappear?
Check and
re-connect
Check voltage from IDU
terminal btw L,N. is there
220V?
Replace IDU
PCB
PCB
No
Is the ODU PCB
LED5 ON?
No
Replace ODU PCB
End
Yes
E0 disappear?
No
Yes
No
Yes
E0 disappear?
No
No
Check the power
supply connection
Yes
E0 disappear?
Yes
ON
constantly
Replace or
reconnect
No
Yes
Flash
42