Hitachi RAS-2-HVNP Service Manual page 435

10. Servicing
Removing Diode Module (DM)
1 Disconnect the wirings of terminal + - U V W on the diode module.
2 Remove 2 M5 fixing screws on the diode module.
3 Remove the diode module from the electrical box.
1: 5 Screws (M5)
2: Fixing screw (M5)
Removing Transistor Module (IPM)
1 Disconnect all the wirings connected to the transistor module.
2 Remove the connectors CN2, CN3, CN206, PCN301 and PCN302 from the transistor module.
3 Disconnect the wirings of P N U V W on the transistor module.
4 Remove 4 M4 fixing screws on the transistor module.
5 Remove the transistor module from the electrical box.
1. Screws for transistor module (M4)
2. Screw (M5)
3. PCN301
4. PCN302
5. Screws for PCB (M3)
7. Inverter PCB
10. LED201
6 Reassemble the parts in the reverse order of removing order.
N O T E
• To connect wiring at reassembling, ensure that the terminal numbers and wiring mark band codes are mat-
ched. If connections are wrong, there is the possibility of wrong operation and to cause damage to electrical
parts.
• When attaching the PCB, or when attaching the parts attached to the PCB, pay attention not to clamp any wi-
ring between plates or electrical components.
421
SMGB0079 rev.0 - 01/2013
6. CN3
8. CN206
9. CN2
10