Hitachi SAMURAI Series Service Manual page 121

4 Troubleshooting
Troubleshooting by alarm code
03-03
Alarm code
Alarm stop reason
Transmission is not performed correctly between CPU PCB(PCBc) and I/O PCB (PCBd).
PCB monitoring position
PCBc (CPU PCB) CN1~PCBd (I/O PCB) CN21 (H-LINK transmission)
PCBa (Setting PCB)
set. Either DSW8-1# of
PCBc (CPU PCB) or DSW300-
1# of PCBd (I/O PCB)
Check PCBc (CPU PCB)
113 SMGB0120 rev.0 - 11/2017
CPU—I/O transmission
DSW1-5,6# of
No
are correctly set
Yes
DSW2-1,2# of
No
PCBd (I/O PCB) are
correctly set
Yes
Terminal
resistance correctly
are set ON
Yes
and PCBd (I/O PCB)
Set DSW correctly and
reactivate power supply
Set DSW correctly and
reactivate power supply
No
Set DSW correctly and
reactivate power supply
4